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

For as low as £396, Icelandair can have you in London from Chicago O'Hare Intl Airport in 10h 20m. Chicago O'Hare Intl Airport and London are separated by a distance of 3939 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

According to our current data, Lufthansa (£361), American Airlines (£389), and Finnair (£417) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that Lufthansa is 36% cheaper than the other options available to this destination.

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

The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £181. However, be on the lookout for offers from WestJet and JetBlue, as they are both options that can get you from Chicago O'Hare Intl Airport to London for a low price.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

The most popular flight routes from Chicago O'Hare Intl Airport to London are Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick and Chicago O'Hare Intl - London City.

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

Looking for the cheapest flight from Chicago O'Hare Intl Airport to London? While on average our users pay £403, our data indicates the cheapest price to be £277. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £317.

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

No one likes to see their flight delayed. When booking a flight from Chicago O'Hare Intl Airport to London consider choosing Royal Jordanian (76%), Aer Lingus (73%) or American Airlines (71%) as they are the most reliable in getting you off to your destination on time.

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

When booking a flight from Chicago O'Hare Intl Airport to London, you may want to consider flying on British Airways, Iberia or Finnair as they are the most popular for this route.

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

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

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

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

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

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

£177+ Flights from Chicago O'Hare Intl Airport to London

Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in April or February, booked 41 days in advance, depart on a Thursday or Sunday and return on a Wednesday

Cheap flight deals from O'Hare Intl to London

Round-trip from	£393
One-way from	£177
Popular in	June
Cheapest in	April
Average price	£497
Good round-trip deal	£395 or less
Good one-way deal	£287 or less

Scandinavian Airlines
1/2-7/2
3 total stops
44h 15m total
Chicago to London

Search Deals

9/11
2 total stops
20h 55m total
Chicago to London

Search Deals

Highest demand for flights based on searches. 21% potential increase in price (£118 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

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

Search Deals

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

Search Deals

Find flight deals from O'Hare Intl to London

Enter your travel dates to find the best prices.

Cheapest flights from O'Hare Intl to London
Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2025.

Tue 4/1118:50ORD - LHR

1 stop15h 30mSWISS

Mon 10/1120:05LHR - ORD

1 stop26h 15mSWISS

Deal found 10/10£393

Mon 17/1118:30ORD - LGW

1 stop10h 25mIcelandair

Mon 24/1111:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 9/10£393

Tue 18/1110:35ORD - LHR

2 stops25h 05mScandinavian Airlines

Sun 23/1106:40LHR - ORD

2 stops16h 05mScandinavian Airlines

Deal found 9/10£393

Thu 6/1114:31ORD - LGW

2 stops24h 09mMultiple Airlines

Thu 20/1114:00LGW - ORD

1 stop15h 06mMultiple Airlines

Deal found 8/10£393

Wed 3/1218:30ORD - LHR

1 stop10h 20mIcelandair

Thu 11/1212:15LHR - ORD

1 stop11h 05mIcelandair

Deal found 10/10£395

Thu 4/1218:30ORD - LHR

1 stop19h 00mIcelandair

Tue 9/1212:15LHR - ORD

1 stop11h 05mIcelandair

Deal found 8/10£396

Sun 23/1119:20ORD - LHR

2 stops39h 40mScandinavian Airlines

Wed 26/1115:35LHR - ORD

2 stops31h 10mScandinavian Airlines

Deal found 9/10£396

Sun 9/1120:25ORD - LGW

2 stops20h 55mMultiple Airlines

Thu 13/1114:00LGW - ORD

1 stop15h 06mMultiple Airlines

Deal found 8/10£396

Sun 9/1118:30ORD - LHR

1 stop19h 00mIcelandair

Thu 20/1120:35LHR - ORD

1 stop26h 45mIcelandair

Deal found 9/10£397

Wed 3/1219:20ORD - LHR

2 stops15h 40mScandinavian Airlines

Wed 10/1207:05LHR - ORD

2 stops15h 40mScandinavian Airlines

Deal found 9/10£399

Mon 1/1219:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Tue 9/1219:50LHR - ORD

2 stops26h 55mScandinavian Airlines

Deal found 8/10£400

Thu 4/1219:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Thu 11/1219:50LHR - ORD

2 stops26h 55mScandinavian Airlines

Deal found 7/10£401

Best flights from O'Hare Intl to London
Discover carefully curated flight deals from O'Hare Intl to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2025.

Sat 8/1118:30ORD - LHR

1 stop10h 20mIcelandair

Tue 18/1112:15LHR - ORD

1 stop11h 05mIcelandair

Deal found 9/10£396

Tue 11/1107:10ORD - LHR

2 stops20h 10mScandinavian Airlines

Tue 25/1119:50LHR - ORD

2 stops26h 55mScandinavian Airlines

Deal found 8/10£411

Wed 5/1121:50ORD - STN

2 stops17h 15mMultiple Airlines

Tue 11/1118:45STN - ORD

2 stops24h 25mMultiple Airlines

Deal found 7/10£413

Sun 26/1021:25ORD - LGW

1 stop31h 25mTAP AIR PORTUGAL

Tue 4/1116:35LGW - ORD

1 stop28h 25mTAP AIR PORTUGAL

Deal found 10/10£455

Tue 11/1115:45ORD - LHR

Nonstop8h 10mUnited Airlines

Tue 25/1106:35LHR - ORD

1 stop13h 35mUnited Airlines

Deal found 9/10£460

Wed 22/1016:40ORD - LCY

1 stop10h 50mKLM

Wed 29/1009:20LCY - ORD

1 stop11h 00mKLM

Deal found 8/10£488

Mon 1/1216:25ORD - LCY

1 stop9h 45mDelta

Thu 11/1210:00LCY - ORD

2 stops14h 27mDelta

Deal found 8/10£496

Sun 26/1017:25ORD - LCY

1 stop9h 45mVirgin Atlantic

Tue 4/1110:00LCY - ORD

2 stops19h 58mVirgin Atlantic

Deal found 8/10£496

Fri 14/1118:30ORD - LHR

1 stop10h 20mIcelandair

Wed 19/1112:15LHR - ORD

1 stop11h 05mIcelandair

Deal found 9/10£396

Sat 6/1219:20ORD - LTN

2 stops21h 35mMultiple Airlines

Tue 16/1220:50LTN - ORD

2 stops25h 55mMultiple Airlines

Deal found 8/10£415

Fri 13/218:30ORD - LHR

1 stop19h 00mIcelandair

Tue 17/220:35LHR - ORD

1 stop26h 45mIcelandair

Deal found 10/10£396

Mon 23/320:20ORD - LHR

1 stop20h 20mScandinavian Airlines

Mon 6/421:05LHR - ORD

2 stops49h 05mScandinavian Airlines

Deal found 8/10£443

Sat 6/1219:20ORD - STN

2 stops21h 35mMultiple Airlines

Sat 13/1206:00STN - ORD

2 stops16h 45mMultiple Airlines

Deal found 8/10£417

Wed 3/1215:45ORD - LHR

Nonstop8h 10mUnited Airlines

Wed 10/1211:10LHR - ORD

1 stop13h 15mUnited Airlines

Deal found 9/10£460

Thu 13/1118:30ORD - LHR

1 stop19h 00mIcelandair

Mon 17/1120:35LHR - ORD

1 stop26h 45mIcelandair

Deal found 9/10£397

Wed 28/119:10ORD - LGW

1 stop13h 55mTAP AIR PORTUGAL

Fri 6/221:25LGW - ORD

2 stops47h 20mTAP AIR PORTUGAL

Deal found 10/10£482

Mon 24/1116:25ORD - LCY

1 stop11h 05mVirgin Atlantic

Wed 3/1208:40LCY - ORD

2 stops19h 00mVirgin Atlantic

Deal found 8/10£496

Fri 12/1207:10ORD - STN

2 stops26h 05mMultiple Airlines

Mon 15/1207:35STN - ORD

1 stop15h 10mMultiple Airlines

Deal found 8/10£417

Mon 6/416:20ORD - LCY

1 stop9h 50mKLM

Tue 21/409:20LCY - ORD

1 stop11h 00mKLM

Deal found 9/10£505

Wed 19/1115:45ORD - LHR

Nonstop8h 10mUnited Airlines

Wed 26/1106:35LHR - ORD

1 stop13h 35mUnited Airlines

Deal found 9/10£460

Fri 14/1118:30ORD - LHR

1 stop19h 00mIcelandair

Thu 20/1120:35LHR - ORD

1 stop26h 45mIcelandair

Deal found 9/10£397

Wed 3/1210:36ORD - LCY

2 stops14h 39mVirgin Atlantic

Tue 9/1209:20LCY - ORD

2 stops17h 15mVirgin Atlantic

Deal found 9/10£499

Wed 8/416:20ORD - LCY

1 stop9h 50mKLM

Wed 22/409:20LCY - ORD

1 stop11h 00mKLM

Deal found 9/10£505

Wed 3/1218:30ORD - LTN

1 stop12h 25mMultiple Airlines

Tue 9/1207:00LTN - ORD

1 stop16h 20mMultiple Airlines

Deal found 9/10£418

Mon 20/1016:40ORD - LCY

1 stop10h 50mVirgin Atlantic

Tue 28/1018:55LCY - ORD

1 stop25h 25mVirgin Atlantic

Deal found 8/10£505

Mon 10/1119:20ORD - STN

2 stops21h 20mMultiple Airlines

Fri 14/1118:55STN - ORD

2 stops27h 50mMultiple Airlines

Deal found 7/10£418

Mon 24/1115:50ORD - STN

2 stops22h 10mMultiple Airlines

Wed 3/1205:55STN - ORD

2 stops18h 00mMultiple Airlines

Deal found 8/10£421

Tue 7/416:20ORD - LCY

1 stop10h 30mVirgin Atlantic

Wed 22/410:00LCY - ORD

2 stops14h 41mVirgin Atlantic

Deal found 9/10£514

Sun 1/318:30ORD - LGW

1 stop10h 25mIcelandair

Fri 6/311:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 8/10£468

Thu 22/110:40ORD - STN

2 stops25h 25mMultiple Airlines

Wed 28/106:00STN - ORD

1 stop16h 45mMultiple Airlines

Deal found 10/10£427

Direct flights from O'Hare Intl to London
Explore direct flight options from O'Hare Intl to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 October 2025.

Sun 1/220:45ORD - LHR

Nonstop7h 40mAlaska Airlines

Sun 15/215:45LHR - ORD

Nonstop9h 00mAlaska Airlines

Deal found 10/10£393

Sun 22/319:45ORD - LHR

Nonstop7h 50mAlaska Airlines

Sun 5/411:05LHR - ORD

Nonstop8h 45mAlaska Airlines

Deal found 10/10£405

Fri 20/321:45ORD - LHR

Nonstop7h 40mAlaska Airlines

Tue 31/312:15LHR - ORD

Nonstop8h 25mAlaska Airlines

Deal found 10/10£412

Sat 31/120:45ORD - LHR

Nonstop7h 40mAlaska Airlines

Sat 14/212:35LHR - ORD

Nonstop8h 50mAlaska Airlines

Deal found 10/10£430

Sun 26/1021:45ORD - LHR

Nonstop7h 40mBritish Airways

Tue 4/1111:00LHR - ORD

Nonstop8h 50mBritish Airways

Deal found 10/10£438

Sun 26/1021:45ORD - LHR

Nonstop7h 40mAmerican Airlines

Tue 4/1111:00LHR - ORD

Nonstop8h 50mAmerican Airlines

Deal found 10/10£439

Thu 26/321:45ORD - LHR

Nonstop7h 40mAlaska Airlines

Mon 6/413:10LHR - ORD

Nonstop8h 45mAlaska Airlines

Deal found 10/10£442

Sun 26/1021:45ORD - LHR

Nonstop7h 40mMultiple Airlines

Tue 4/1111:00LHR - ORD

Nonstop8h 50mMultiple Airlines

Deal found 10/10£450

Sat 21/319:45ORD - LHR

Nonstop7h 50mAlaska Airlines

Sun 5/411:05LHR - ORD

Nonstop8h 45mAlaska Airlines

Deal found 10/10£462

Wed 3/1220:35ORD - LHR

Nonstop7h 50mIberia

Mon 8/1214:10LHR - ORD

Nonstop8h 50mIberia

Deal found 10/10£472

Sun 26/1021:45ORD - LHR

Nonstop7h 40mIberia

Tue 4/1114:10LHR - ORD

Nonstop8h 50mIberia

Deal found 9/10£474

Last-minute flights from O'Hare Intl to London
Discover last-minute flight deals from O'Hare Intl to London. Data last updated 10 October 2025 and is based on user searches.

Sat 18/1011:12ORD - LGW

1 stop13h 08mMultiple Airlines

Fri 31/1014:00LGW - ORD

1 stop30h 08mMultiple Airlines

Deal found 10/10£403

Wed 22/1006:40ORD - LGW

1 stop17h 40mMultiple Airlines

Fri 31/1014:00LGW - ORD

2 stops25h 50mMultiple Airlines

Deal found 8/10£401

Thu 23/1006:00ORD - LGW

2 stops22h 00mMultiple Airlines

Fri 31/1014:00LGW - ORD

1 stop30h 08mMultiple Airlines

Deal found 9/10£404

Tue 4/1118:50ORD - LHR

1 stop15h 30mSWISS

Mon 10/1120:05LHR - ORD

1 stop26h 15mSWISS

Deal found 10/10£393

Thu 6/1114:31ORD - LGW

2 stops24h 09mMultiple Airlines

Thu 20/1114:00LGW - ORD

1 stop15h 06mMultiple Airlines

Deal found 8/10£393

Fri 7/1118:30ORD - LHR

1 stop10h 20mIcelandair

Wed 12/1112:15LHR - ORD

1 stop11h 05mIcelandair

Deal found 10/10£395

Sun 9/1120:25ORD - LGW

2 stops20h 55mMultiple Airlines

Thu 13/1114:00LGW - ORD

1 stop15h 06mMultiple Airlines

Deal found 8/10£396

Sun 9/1118:30ORD - LHR

1 stop19h 00mIcelandair

Thu 20/1120:35LHR - ORD

1 stop26h 45mIcelandair

Deal found 9/10£397

Sun 16/1118:30ORD - LHR

1 stop10h 20mIcelandair

Thu 4/1212:15LHR - ORD

1 stop11h 05mIcelandair

Deal found 8/10£396

Mon 17/1118:30ORD - LGW

1 stop10h 25mIcelandair

Mon 24/1111:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 9/10£393

Tue 18/1110:35ORD - LHR

2 stops25h 05mScandinavian Airlines

Sun 23/1106:40LHR - ORD

2 stops16h 05mScandinavian Airlines

Deal found 9/10£393

Sun 23/1119:20ORD - LHR

2 stops39h 40mScandinavian Airlines

Wed 26/1115:35LHR - ORD

2 stops31h 10mScandinavian Airlines

Deal found 9/10£396

One-way flights from O'Hare Intl to London
Search for one-way flight options from O'Hare Intl to London. Find affordable one-way fares based on user searches. Data last updated 10 October 2025.

Sun 9/1120:25ORD - LGW

2 stops20h 55mMultiple Airlines

Deal found 10/10£177

Fri 14/1120:15ORD - STN

2 stops21h 55mMultiple Airlines

Deal found 10/10£177

Sat 18/1018:15ORD - LHR

1 stop34h 05mTAP AIR PORTUGAL

Deal found 9/10£178

Wed 15/1018:58ORD - LGW

1 stop33h 02mMultiple Airlines

Deal found 10/10£178

Sat 8/1106:40ORD - STN

2 stops47h 15mMultiple Airlines

Deal found 8/10£178

Mon 8/1214:20ORD - LHR

1 stop16h 30mWestJet

Deal found 8/10£179

Wed 22/1005:05ORD - LGW

3 stops33h 25mMultiple Airlines

Deal found 8/10£179

Sun 9/1120:25ORD - LTN

2 stops30h 05mMultiple Airlines

Deal found 10/10£179

Fri 24/1008:40ORD - LHR

2 stops21h 25mMultiple Airlines

Deal found 10/10£179

Thu 23/1018:00ORD - LGW

1 stop33h 45mTAP AIR PORTUGAL

Deal found 8/10£179

Wed 5/1119:10ORD - LTN

2 stops21h 10mMultiple Airlines

Deal found 8/10£180

Wed 19/1114:31ORD - LHR

2 stops22h 24mMultiple Airlines

Deal found 9/10£180

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sat 8/11

18:30-10:50

1 stop10h 20m

London Heathrow

Tue 18/11

12:15-17:20

1 stop11h 05m

£396

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 14/11

18:30-10:50

1 stop10h 20m

London Heathrow

Wed 19/11

12:15-17:20

1 stop11h 05m

£396

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 13/2

18:30-19:30

1 stop19h 00m

London Heathrow

Tue 17/2

20:35-17:20

1 stop26h 45m

£396

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Thu 13/11

18:30-19:30

1 stop19h 00m

London Heathrow

Mon 17/11

20:35-17:20

1 stop26h 45m

£397

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 14/11

18:30-19:30

1 stop19h 00m

London Heathrow

Thu 20/11

20:35-17:20

1 stop26h 45m

£397

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 11/11

07:10-09:20

2 stops20h 10m

London Heathrow

Tue 25/11

19:50-16:45

2 stops26h 55m

£411

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 5/11

21:50-21:05

2 stops17h 15m

London Stansted

Tue 11/11

18:45-13:10

2 stops24h 25m

£413

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sat 6/12

19:20-22:55

2 stops21h 35m

London Luton

Tue 16/12

20:50-16:45

2 stops25h 55m

£415

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sat 6/12

19:20-22:55

2 stops21h 35m

London Stansted

Sat 13/12

06:00-16:45

2 stops16h 45m

£417

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Fri 12/12

07:10-15:15

2 stops26h 05m

London Stansted

Mon 15/12

07:35-16:45

1 stop15h 10m

£417

Flights are sorted by cheapest return flights first.

Deals found on 9/10

Showing 1-10 of 60 results

...

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

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

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 Chicago O'Hare Intl Airport to London

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

The price you pay for your flight from Chicago O'Hare Intl Airport to London may vary depending on when you book. For the best chance of a lower fare, look to book 41 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of £294). Flying from Chicago O'Hare Intl Airport to London in July is currently the most expensive (average of £460). 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 ORD to LON?

It’s typically best to fly out from Chicago O'Hare Intl Airport to London in the afternoon. Doing so could potentially save you 28% on the flight price compared to flying at midday, which is usually more expensive.

Weekly flight availability from Chicago O'Hare Intl Airport to London

The most flights from ORD to LON are scheduled on a Monday (57 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (52 on average).

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

Reykjavik (KEF) – chosen by Cheapflights users on 36% of one-stop itineraries from Chicago O'Hare Intl Airport to London on Cheapflights.

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

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £337.

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 9h 50m.

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

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

Reviews of airlines servicing London

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

United Airlines

7.4

Good

8,973 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

United Airlines

7.4

Good

8,973 reviews

United Airlines

7.4

Good

8,973 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tim,Sept 2025

IAD - GSP

Icelandair

7.0

Good

553 reviews

United Airlines

7.4

Good

8,973 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tim,Sept 2025

IAD - GSP

Iberia

7.0

Good

2,982 reviews

United Airlines

7.4

Good

8,973 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tim,Sept 2025

IAD - GSP

Lufthansa

6.8

Okay

7,467 reviews

United Airlines

7.4

Good

8,973 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tim,Sept 2025

IAD - GSP

British Airways

6.7

Okay

7,449 reviews

United Airlines

7.4

Good

8,973 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tim,Sept 2025

IAD - GSP

Related info for your journey

How long is the flight from Chicago O'Hare Intl Airport to London?
For as low as £396, Icelandair can have you in London from Chicago O'Hare Intl Airport in 10h 20m. Chicago O'Hare Intl Airport and London are separated by a distance of 3939 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London round-trip?
According to our current data, Lufthansa (£361), American Airlines (£389), and Finnair (£417) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that Lufthansa is 36% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to London one-way?
The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £181. However, be on the lookout for offers from WestJet and JetBlue, as they are both options that can get you from Chicago O'Hare Intl Airport to London for a low price.
What are the most popular routes from Chicago O'Hare Intl Airport to London?
The most popular flight routes from Chicago O'Hare Intl Airport to London are Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick and Chicago O'Hare Intl - London City.
What are the most reliable airlines from Chicago O'Hare Intl Airport to London?
No one likes to see their flight delayed. When booking a flight from Chicago O'Hare Intl Airport to London consider choosing Royal Jordanian (76%), Aer Lingus (73%) or American Airlines (71%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Chicago O'Hare Intl Airport to London?
Looking for the cheapest flight from Chicago O'Hare Intl Airport to London? While on average our users pay £403, our data indicates the cheapest price to be £277. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £317.
Can I find deals for flights from O'Hare Intl to London that include hotel bookings?
Yes. In addition to deals on O'Hare Intl to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from O'Hare Intl to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to London.
Can I find deals for business class flights from O'Hare Intl to London?
Yes. Cheapflights offers flight deals from O'Hare Intl to London 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 Chicago O'Hare Intl Airport to London?
Currently, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of £294). Flying from Chicago O'Hare Intl Airport to London in July is currently the most expensive (average of £460). 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.

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Top 7 airlines flying from O'Hare Intl to London

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£361	Average£538	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
American Airlines	Cheapest£389	Average£634	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Finnair	Cheapest£417	Average£679	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£450	Average£539	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Aer Lingus	Cheapest£453	Average£584	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
British Airways	Cheapest£454	Average£569	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£466	Average£701	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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When you search for this flight from O'Hare Intl to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Need flexible booking options for your flight to London from O'Hare Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Cheap flights from Chicago O'Hare Intl Airport to London from £177

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in April or February, booked 41 days in advance, depart on a Thursday or Sunday and return on a Wednesday

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Cheapest flights from O'Hare Intl to LondonExplore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2025.

Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2025.

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

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

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

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

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to London. Price data was last updated on 3 October 2025.

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

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

Find hourly flight availability from O'Hare Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 October 2025.

Weekly flight availability from Chicago O'Hare Intl Airport to London

Explore weekly flight availability from O'Hare Intl to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 10 October 2025.

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

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

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

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

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

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

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

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

Reviews of airlines servicing London

Get a feel of what it's like to fly with United Airlines, Icelandair, andIberia from Chicago O'Hare Intl Airport to London 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

Find useful and relevant information for your journey from O'Hare Intl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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

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

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

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

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

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Alternative routes for O'Hare Intl to London

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Top 7 airlines flying from O'Hare Intl to London

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

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

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

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Cheapest flights from O'Hare Intl to London
Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2025.