How long is the flight from London to Chicago O'Hare Intl Airport?

Scandinavian Airlines, TAP AIR PORTUGAL, and Virgin Atlantic can get you from London to Chicago O'Hare Intl Airport in just under 12h 15m. Your travel time can differ by up to 35h 40m. There are 3960 mi between London and Chicago O'Hare Intl Airport. This flight may include one or multiple stops.

What are the cheapest airlines flying from London to Chicago O'Hare Intl Airport round-trip?

Flying on Virgin Atlantic is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £213. Additional return tickets that might be worth considering are offered by Icelandair and TAP AIR PORTUGAL, with the lowest prices starting at £357 and £390, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 67% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?

For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as £317. Users have also found prices from £327 and £353 on Icelandair and JetBlue, respectively.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What are the most popular routes from London to Chicago O'Hare Intl Airport?

When deciding which route to take from London to Chicago O'Hare Intl Airport consider London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl or London Stansted - Chicago O'Hare Intl as they are the most popular.

What are the cheapest flights from London to Chicago O'Hare Intl Airport?

The cheapest flight price from London to Chicago O'Hare Intl Airport is £411. On average you can expect to pay £1,679. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £448.

What are the most reliable airlines from London to Chicago O'Hare Intl Airport?

Consider Air Canada (88%), Austrian Airlines (88%) or United Airlines (88%) when booking your flight. These represent the most reliable airlines when flying from London to Chicago O'Hare Intl Airport.

What are the most popular airlines that fly from London to Chicago O'Hare Intl Airport?

Before booking your flight from London to Chicago O'Hare Intl Airport check out the most popular airlines for this route: British Airways, Icelandair or Lufthansa.

Can I find deals for flights from London to O'Hare Intl that include hotel bookings?

Yes. In addition to deals on London to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to O'Hare Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to O'Hare Intl.

Can I find deals for business class flights from London to O'Hare Intl?

Yes. Cheapflights offers flight deals from London to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£407+ Cheap Flights from London to Chicago O'Hare Intl Airport

Cheapflights Tip: The best prices from London to Chicago O'Hare Intl are usually found in February or January, booked 79 days in advance, depart on a Wednesday or Friday and return on a Monday

Cheap flight deals from London to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from London to O'Hare Intl
Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Thu 19/1111:00 -

Nonstop8h 45m

Mon 30/1121:50 -

Nonstop7h 45m

Deal found 25/10£518

Thu 12/1119:50 -

2 stops25h 40m

Sun 15/1120:10 -

1 stop21h 40m

Deal found 25/10£518

Mon 23/1119:30 -

2 stops27h 50m

Mon 7/1218:30 -

2 stops21h 15m

Deal found 25/10£519

Thu 3/1206:40 -

1 stop16h 05m

Sat 16/119:10 -

1 stop32h 10m

Deal found 26/10£519

Thu 5/1116:00 -

1 stop29h 30m

Fri 4/1220:10 -

2 stops30h 10m

Deal found 27/10£520

Mon 23/1111:00 -

Nonstop8h 45m

Fri 27/1117:10 -

Nonstop7h 45m

Deal found 25/10£520

Thu 19/1106:40 -

1 stop16h 05m

Thu 3/1219:10 -

1 stop14h 50m

Deal found 25/10£521

Fri 4/1207:00 -

2 stops16h 20m

Sun 6/1218:30 -

2 stops21h 30m

Deal found 28/10£521

Mon 9/1122:35 -

2 stops24h 45m

Tue 17/1118:30 -

2 stops13h 35m

Deal found 28/10£521

Tue 17/1110:20 -

1 stop12h 25m

Thu 3/1219:10 -

1 stop14h 50m

Deal found 25/10£522

Tue 24/1107:45 -

2 stops15h 35m

Mon 30/1118:30 -

2 stops17h 30m

Deal found 25/10£522

Wed 25/1109:50 -

2 stops19h 28m

Wed 2/1219:00 -

1 stop14h 05m

Deal found 28/10£522

Best flights from London to O'Hare Intl
Discover carefully curated flight deals from London to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Sat 21/1107:35 -

2 stops15h 45m

Sat 28/1118:30 -

2 stops22h 10m

Deal found 25/10£532

Fri 20/1106:40 -

1 stop16h 05m

Fri 11/1219:10 -

1 stop14h 50m

Deal found 26/10£582

Fri 20/1121:35 -

2 stops47h 55m

Fri 11/1220:10 -

1 stop31h 40m

Deal found 26/10£617

Mon 23/1116:30 -

Nonstop8h 55m

Mon 7/1220:30 -

Nonstop7h 55m

Deal found 26/10£666

Mon 7/1213:35 -

Nonstop9h 20m

Wed 23/1221:50 -

Nonstop8h 10m

Deal found 29/10£669

Mon 7/1208:40 -

2 stops16h 05m

Tue 22/1207:45 -

1 stop16h 35m

Deal found 28/10£675

Mon 23/1110:00 -

1 stop12h 15m

Mon 30/1114:44 -

2 stops19h 01m

Deal found 26/10£689

Mon 23/1110:55 -

1 stop37h 25m

Mon 7/1220:15 -

1 stop31h 40m

Deal found 26/10£708

Wed 18/1109:15 -

2 stops15h 00m

Sun 22/1116:10 -

1 stop14h 40m

Deal found 25/10£783

Sat 28/1108:40 -

1 stop11h 45m

Sun 6/1216:25 -

1 stop9h 45m

Deal found 29/10£1,055

Thu 18/207:00 -

2 stops16h 20m

Tue 23/218:30 -

2 stops21h 30m

Deal found 26/10£539

Sat 21/1115:35 -

2 stops31h 10m

Sat 28/1119:10 -

2 stops15h 50m

Deal found 25/10£591

Tue 12/107:00 -

2 stops16h 20m

Fri 15/118:30 -

2 stops19h 55m

Deal found 26/10£546

Sun 22/1106:40 -

1 stop16h 05m

Sat 28/1119:10 -

2 stops20h 10m

Deal found 29/10£595

Sat 21/1107:20 -

2 stops16h 00m

Mon 30/1118:30 -

2 stops13h 40m

Deal found 29/10£563

Mon 23/1107:45 -

2 stops16h 59m

Mon 7/1209:59 -

2 stops16h 11m

Deal found 26/10£706

Thu 10/1206:30 -

2 stops15h 47m

Thu 17/1209:59 -

1 stop15h 06m

Deal found 26/10£708

Wed 2/1210:55 -

1 stop37h 25m

Tue 8/1211:45 -

1 stop16h 10m

Deal found 29/10£709

Wed 2/1219:30 -

1 stop27h 15m

Tue 8/1210:38 -

2 stops25h 52m

Deal found 27/10£597

Wed 18/1107:30 -

1 stop16h 50m

Sun 22/1115:55 -

1 stop17h 15m

Deal found 25/10£570

Sat 28/1111:05 -

1 stop31h 05m

Sat 5/1218:15 -

1 stop10h 35m

Deal found 29/10£774

Mon 16/1110:55 -

1 stop29h 05m

Tue 24/1111:45 -

1 stop16h 10m

Deal found 28/10£711

Thu 5/1110:10 -

2 stops35h 20m

Sat 21/1117:30 -

2 stops21h 10m

Deal found 25/10£801

Sun 29/1117:20 -

1 stop28h 30m

Sat 5/1217:47 -

1 stop32h 03m

Deal found 25/10£810

Mon 9/1110:00 -

1 stop12h 15m

Mon 30/1114:44 -

2 stops19h 01m

Deal found 25/10£753

Thu 10/1219:05 -

2 stops23h 05m

Sun 13/1215:40 -

2 stops15h 10m

Deal found 28/10£854

Wed 25/1107:30 -

1 stop12h 40m

Mon 30/1115:55 -

1 stop12h 50m

Deal found 28/10£585

Thu 18/210:55 -

1 stop37h 25m

Tue 23/220:15 -

1 stop38h 05m

Deal found 26/10£713

Tue 23/217:20 -

1 stop22h 40m

Tue 2/320:15 -

1 stop38h 05m

Deal found 26/10£713

Sat 5/1208:40 -

2 stops19h 16m

Mon 28/1216:25 -

1 stop10h 25m

Deal found 27/10£786

Find flight deals from London to O'Hare Intl

Round-trip from	£518
One-way from	£407
Popular in	August
Cheapest in	February
Average price	£644
Good round-trip deal	£607 or less
Good one-way deal	£507 or less

British Airways
19/11-30/11
Nonstop
16h 30m total
London to Chicago

Search Deals

20/11-31/12
2 total stops
15h 10m total
London to Chicago

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£72 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from London (LON) to Chicago O'Hare Intl.

Search Deals

Price to beat on a one-way flight from London (LON) to Chicago O'Hare Intl.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Fri 25/12

06:00-15:30

1 stop15h 30m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£413

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Sun 27/12

19:35-14:10

1 stop24h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£415

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Fri 6/11

20:25-15:30

2 stops49h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£417

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Sat 17/4

20:00-14:00

1 stop24h 00m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£417

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Wed 6/1

09:45-01:02

1 stop21h 17m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£420

LondonChicago

LCY London City - ORD Chicago O'Hare Intl

LCYORD

London City

Tue 20/4

19:15-12:45

1 stop23h 30m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£422

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Fri 18/12

08:30-18:20

1 stop15h 50m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£422

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Sat 23/1

10:10-15:30

2 stops35h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£423

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Wed 23/12

07:30-14:10

1 stop12h 40m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£429

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Thu 15/4

21:30-14:25

1 stop22h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£432

Flights are sorted by cheapest return flights first.

Deals found on 25/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from London with our price prediction graph.

LON-ORD

LHR-ORD

LTN-ORD

LCY-ORD

STN-ORD

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Chicago O'Hare Intl Airport

LON-ORD

LHR-ORD

LTN-ORD

LCY-ORD

STN-ORD

What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?

Currently, February is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £508). Flying from London to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £822). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to ORD?

When flying from London to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from London to Chicago O'Hare Intl Airport?

Airfare is typical for this route at the moment.

London to Chicago O'Hare Intl Airport flights typically cost between £518 and £672 in November.
The cheapest return price found within the last 5 days was £518 on British Airways (19 Nov–30 Nov).

What’s the top stopover airport for flights from London to Chicago O'Hare Intl Airport?

Reykjavik (KEF) – chosen by Cheapflights users on 44% of one-stop itineraries from London to Chicago O'Hare Intl Airport on Cheapflights.

What’s the cheapest stopover airport for flights from London to Chicago O'Hare Intl Airport?

Amsterdam (AMS) is the most affordable one-stop option, with an average return flight price of £371.

What’s the fastest stopover option from London to Chicago O'Hare Intl Airport?

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 11h 00m.

Which airport typically offers the quickest stopover for flights from London to Chicago O'Hare Intl Airport?

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average stopover time of 1h 03m.

How often are flights from London to Chicago delayed?

About 8% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 179 minutes.

What is the most punctual flight time for London to Chicago flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Chicago flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 5% of flights being delayed.

How far ahead should I book a flight from London to Chicago O'Hare Intl Airport?

The best time to book flights from London to Chicago O'Hare Intl Airport is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing O'Hare Intl

Get a feel of what it's like to fly with Aer Lingus,United Airlines, andIcelandair from London to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Aer Lingus

7.3

Good

1,868 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Aer Lingus

7.3

Good

1,868 reviews

Aer Lingus

7.3

Good

1,868 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

United Airlines

7.3

Good

10,451 reviews

Aer Lingus

7.3

Good

1,868 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Icelandair

6.9

Okay

764 reviews

Aer Lingus

7.3

Good

1,868 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Lufthansa

6.8

Okay

8,298 reviews

Aer Lingus

7.3

Good

1,868 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

British Airways

6.7

Okay

8,275 reviews

Aer Lingus

7.3

Good

1,868 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Related info for your journey

How long is the flight from London to Chicago O'Hare Intl Airport?
Scandinavian Airlines, TAP AIR PORTUGAL, and Virgin Atlantic can get you from London to Chicago O'Hare Intl Airport in just under 12h 15m. Your travel time can differ by up to 35h 40m. There are 3960 mi between London and Chicago O'Hare Intl Airport. This flight may include one or multiple stops.
What are the cheapest airlines flying from London to Chicago O'Hare Intl Airport round-trip?
Flying on Virgin Atlantic is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £213. Additional return tickets that might be worth considering are offered by Icelandair and TAP AIR PORTUGAL, with the lowest prices starting at £357 and £390, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 67% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?
For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as £317. Users have also found prices from £327 and £353 on Icelandair and JetBlue, respectively.
What are the most popular routes from London to Chicago O'Hare Intl Airport?
When deciding which route to take from London to Chicago O'Hare Intl Airport consider London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl or London Stansted - Chicago O'Hare Intl as they are the most popular.
What are the most reliable airlines from London to Chicago O'Hare Intl Airport?
Consider Air Canada (88%), Austrian Airlines (88%) or United Airlines (88%) when booking your flight. These represent the most reliable airlines when flying from London to Chicago O'Hare Intl Airport.
What are the cheapest flights from London to Chicago O'Hare Intl Airport?
The cheapest flight price from London to Chicago O'Hare Intl Airport is £411. On average you can expect to pay £1,679. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £448.
Can I find deals for flights from London to O'Hare Intl that include hotel bookings?
Yes. In addition to deals on London to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to O'Hare Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to O'Hare Intl.
Can I find deals for business class flights from London to O'Hare Intl?
Yes. Cheapflights offers flight deals from London to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?
Currently, February is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £508). Flying from London to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £822). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Elk Grove Village

Browse thousands of different options on Cheapflights for your next trip

Airlines

Alternative routes

Complete your trip

Direct flights to Illinois

Flights by cabin class

O'Hare Intl flight routes

Other flight options

Other flights from London

Popular flights

Fly from London to O'Hare Intl on these airlines

British Airways flights from London to Chicago O'Hare Intl

Lufthansa flights from London to Chicago O'Hare Intl

Finnair flights from London to Chicago O'Hare Intl

Top 10 airlines flying from London to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£213	Average£557	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£357	Average£513	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
TAP AIR PORTUGAL	Cheapest£390	Average£589	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	Cheapest£394	Average£564	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Brussels Airlines	Cheapest£408	Average£856	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
British Airways	Cheapest£425	Average£695	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£431	Average£732	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
American Airlines	Cheapest£436	Average£774	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
JetBlue	Cheapest£446	Average£687	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Austrian Airlines	Cheapest£450	Average£696	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to O'Hare Intl?

Cheapflights helps you search for flights from London to O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to O'Hare Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to O'Hare Intl for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to O'Hare Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to O'Hare Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to O'Hare Intl become cheaper?

Yes! Start tracking prices for London to O'Hare Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London to Chicago O'Hare Intl Airport from £407

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to O'Hare Intl

Cheapest flights from London to O'Hare IntlExplore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from London to O'Hare IntlDiscover carefully curated flight deals from London to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from London to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from London to O'Hare IntlExplore direct flight options from London to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Explore direct flight options from London to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from London to O'Hare IntlDiscover last-minute flight deals from London to O'Hare Intl. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from London to O'Hare Intl. Data last updated 30 October 2026 and is based on user searches.

One-way flights from London to O'Hare IntlSearch for one-way flight options from London to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Search for one-way flight options from London to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Find flight deals from London to O'Hare Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

Best time to book a flight from London to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from London with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?

What is the cheapest time of day to fly from LON to ORD?

Find hourly flight availability from London to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2026.

When flying from London to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from London to Chicago O'Hare Intl Airport?

Airfare is typical for this route at the moment.

London to Chicago O'Hare Intl Airport flights typically cost between £518 and £672 in November.The cheapest return price found within the last 5 days was £518 on British Airways (19 Nov–30 Nov).

What’s the top stopover airport for flights from London to Chicago O'Hare Intl Airport?

Share of one-stop return flights from London to Chicago O'Hare Intl Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 44% of one-stop itineraries from London to Chicago O'Hare Intl Airport on Cheapflights.

What’s the cheapest stopover airport for flights from London to Chicago O'Hare Intl Airport?

Average return fare for one-stop flights from London to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Amsterdam (AMS) is the most affordable one-stop option, with an average return flight price of £371.

What’s the fastest stopover option from London to Chicago O'Hare Intl Airport?

Shortest average travel time for one-stop one-way flights from London to Chicago O'Hare Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 11h 00m.

Which airport typically offers the quickest stopover for flights from London to Chicago O'Hare Intl Airport?

Average stopover duration for one-stop one-way flights from London to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average stopover time of 1h 03m.

How often are flights from London to Chicago delayed?

About 8% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 179 minutes.

What is the most punctual flight time for London to Chicago flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Chicago flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 5% of flights being delayed.

How far ahead should I book a flight from London to Chicago O'Hare Intl Airport?

The best time to book flights from London to Chicago O'Hare Intl Airport is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing O'Hare Intl

Get a feel of what it's like to fly with Aer Lingus,United Airlines, andIcelandair from London to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London to Chicago O'Hare Intl Airport?

What are the cheapest airlines flying from London to Chicago O'Hare Intl Airport round-trip?

What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?

What are the most popular routes from London to Chicago O'Hare Intl Airport?

What are the most reliable airlines from London to Chicago O'Hare Intl Airport?

What are the cheapest flights from London to Chicago O'Hare Intl Airport?

Can I find deals for flights from London to O'Hare Intl that include hotel bookings?

How can I find direct flights from London to O'Hare Intl?

Can I find deals for business class flights from London to O'Hare Intl?

What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?

Travelling to a place near Chicago O'Hare Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from London to O'Hare Intl on these airlines

Choose from the following airlines for your flight from London to O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.

Alternative routes for London to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to O'Hare Intl by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Illinois

Book a non-stop flight to one of these other cities located in Illinois.

Search flights from London to O'Hare Intl by cabin class

Cheapest flights from London to O'Hare Intl
Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from London to O'Hare Intl
Discover carefully curated flight deals from London to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from London to O'Hare Intl
Explore direct flight options from London to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from London to O'Hare Intl
Discover last-minute flight deals from London to O'Hare Intl. Data last updated 30 October 2026 and is based on user searches.

One-way flights from London to O'Hare Intl
Search for one-way flight options from London to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

London to Chicago O'Hare Intl Airport flights typically cost between £518 and £672 in November.
The cheapest return price found within the last 5 days was £518 on British Airways (19 Nov–30 Nov).