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£86+ Cheap flights from Chicago

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
CHI — LHR
12 Oct — 19 Oct1
1 adult
1 adult, Economy

What to know about flights from Chicago

Discover essential information about flights departing from Chicago, including flight schedules, destinations, airlines operating at the Chicago airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 12 September 2025.

Cheapest airline

Frontier

Good round-trip deal

£43 or less

Good one-way deal

£41 or less
On average, Frontier currently has the cheapest one-way flight from Chicago (avg. price of £119).
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Price to beat on a round-trip flight from Chicago.
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Price to beat on a one-way flight from Chicago.
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Find flights from Chicago

Cheapest flights from Chicago
Explore the most affordable flight options available from Chicago. Find the lowest fares based on data from user searches, with prices last updated on 12 September 2025.

Fri 28/1118:30ORD - GLA
1 stop9h 25mIcelandair
Thu 4/1212:35GLA - ORD
1 stop10h 45mIcelandair
Deal found 10/9£362
Sun 2/1118:30ORD - GLA
1 stop9h 25mIcelandair
Wed 12/1112:35GLA - ORD
1 stop10h 45mIcelandair
Deal found 11/9£362
Mon 6/1019:25ORD - GLA
1 stop12h 00mIcelandair
Fri 17/1014:20GLA - ORD
1 stop12h 55mIcelandair
Deal found 11/9£363
Sun 16/1118:30ORD - GLA
1 stop9h 25mIcelandair
Wed 3/1212:35GLA - ORD
1 stop10h 45mIcelandair
Deal found 11/9£365
Sun 19/1010:40ORD - LHR
1 stop13h 50mMultiple Airlines
Tue 4/1109:00LHR - ORD
2 stops15h 39mMultiple Airlines
Deal found 10/9£373
Mon 27/1019:50ORD - LGW
1 stop17h 00mSWISS
Mon 3/1118:40LGW - ORD
1 stop27h 40mSWISS
Deal found 11/9£373
Mon 10/1118:30ORD - LTN
1 stop13h 30mMultiple Airlines
Sun 23/1106:00LTN - ORD
1 stop17h 20mMultiple Airlines
Deal found 10/9£374
Wed 24/921:50ORD - LHR
Nonstop7h 55mUnited Airlines
Tue 14/1006:50LHR - ORD
1 stop11h 15mUnited Airlines
Deal found 10/9£374
Tue 30/921:25ORD - LHR
Nonstop8h 20mUnited Airlines
Tue 7/1006:50LHR - ORD
1 stop11h 15mUnited Airlines
Deal found 11/9£374
Sun 9/1118:30ORD - GLA
1 stop9h 25mIcelandair
Sat 15/1112:35GLA - ORD
1 stop10h 45mIcelandair
Deal found 10/9£374
Tue 14/1015:50ORD - LHR
1 stop10h 45mMultiple Airlines
Mon 20/1019:30LHR - ORD
1 stop23h 50mMultiple Airlines
Deal found 10/9£375
Wed 3/1206:40ORD - LGW
1 stop17h 20mMultiple Airlines
Tue 9/1213:00LGW - ORD
1 stop29h 45mMultiple Airlines
Deal found 10/9£375

Find flights from Chicago within your budget

 
Find flights departing from Chicago that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 12 September 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 1/12

21:05-11:15

Nonstop8h 10m

London Heathrow

Tue 9/12

06:50-12:10

1 stop11h 20m

£374

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 12/11

17:50-07:55

Nonstop8h 05m

London Heathrow

Wed 19/11

06:50-12:10

1 stop11h 20m

£374

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 28/9

16:00-06:20

Nonstop8h 20m

London Heathrow

Tue 7/10

06:50-12:05

1 stop11h 15m

£374

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 29/9

16:00-06:20

Nonstop8h 20m

London Heathrow

Tue 7/10

06:50-12:05

1 stop11h 15m

£374

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 3/12

18:30-12:55

1 stop12h 25m

London Luton

Thu 11/12

06:00-17:20

1 stop17h 20m

£376

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 30/9

19:10-09:05

Nonstop7h 55m

London Heathrow

Fri 14/11

15:45-18:45

Nonstop9h 00m

£382

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 2/12

21:45-11:35

Nonstop7h 50m

London Heathrow

Wed 10/12

11:00-13:50

Nonstop8h 50m

£382

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 8/2

18:30-10:55

1 stop10h 25m

London Gatwick

Fri 20/2

11:55-17:20

1 stop11h 25m

£382

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Tue 10/2

18:30-10:55

1 stop10h 25m

London Gatwick

Tue 17/2

11:55-17:20

1 stop11h 25m

£382

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Tue 10/2

18:30-10:55

1 stop10h 25m

London Gatwick

Sat 21/2

11:55-17:20

1 stop11h 25m

£382

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 60 results
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Best time to book a flight from Chicago

Have a flexible travel schedule? Discover the best time to fly from Chicago 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.

Travel insights for flights from Chicago

Get recent, data-driven insights about flights from Chicago including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Chicago?

Use this chart to determine the optimal time to book a return flight from Chicago to Heathrow. Price data was last updated on 29 August 2025.

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Chicago?

Currently, May is the cheapest month in which you can book a flight from Chicago (average of £292). Flying from Chicago in June will prove the most costly (average of £664). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Chicago?

Many airlines operate round-trip flights from Chicago: British Airways, Iberia, Finnair, Lufthansa, United Airlines. These airlines fly to the following popular destinations: London.

British Airways
British Airways
From £440
American Airlines
American Airlines
From £91
Iberia
Iberia
From £564
Aer Lingus
Aer Lingus
From £480

What are popular destinations to fly to from Chicago?

If you’re flying from Chicago, these routes are more frequently taken by airlines New York (1,546 flights per day), Detroit (1,150 flights per day) and Los Angeles (733 flights per day).

London
London
From £348
New York
New York
From £49
Dublin
Dublin
From £395
Toronto
Toronto
From £50

What is the cheapest place to fly to from Chicago?

The cheapest city to fly to from Chicago is Palm Beach Intl, with prices starting at £21. Explore other affordable destinations below.

Palm Beach Intl
Palm Beach Intl
From £29
New York
New York
From £49
Toronto
Toronto
From £50
Vancouver Intl
Vancouver Intl
From £63

Airline reviews for flights from Chicago

Get insights into the airlines that provide service from Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Chicago. In the last 7 days, Cheapflights users made a total of 858,174 searches.
Check out reviews from past customers who have flown Iberia and British Airways from Chicago to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Iberia
7.0
Good
2,929 reviews
Check prices

Crew

7.6

Boarding

7.1

Entertainment

6.6

Overall

7.0

Food

6.3

Comfort

6.7

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight
Iberia
7.0
Good
2,929 reviews
Iberia
7.0
Good
2,929 reviews
Check prices

Crew

7.6

Boarding

7.1

Entertainment

6.6

Overall

7.0

Food

6.3

Comfort

6.7

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight
British Airways
6.7
Okay
7,361 reviews
Iberia
7.0
Good
2,929 reviews
Check prices

Crew

7.6

Boarding

7.1

Entertainment

6.6

Overall

7.0

Food

6.3

Comfort

6.7

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight

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Related info for your journey

Access useful and relevant information related to your journey from Chicago. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 12 September 2025.

  • What are the most popular destinations to fly to from Chicago?

    This month, the top selected destinations from Chicago are Athens, Boston, Atlanta. Throughout the year, Atlanta, Boston, Mumbai are some of the top choices made by users flying from Chicago.

  • What is the cheapest airport to fly out of Chicago?

    Chicago O'Hare Intl airport offers the cheapest routes to Almaty, from £309; whereas Chicago Midway airport is typically cheaper if you're flying to London, from £387. It's best to make sure you are flexible on dates to find the cheapest possible flight options for your journey.

  • What are the cheapest airlines flying from Chicago to anywhere?

    Over the past few days, we've found that Frontier, Spirit Airlines, and Air Canada have the cheapest prices from Chicago. Frontier flights from Chicago to Atlanta Hartsfield-Jackson (£39), Spirit Airlines flights from Chicago to Los Angeles (£49), and Air Canada flights from Chicago to Toronto (£109).

  • What is the cheapest month to fly from Chicago?

    At the present moment the cheapest month to fly from Chicago is currently May; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Chicago?

    Check out the cheapest flights from Chicago to embark to:
    Travel from Chicago to London from £309 round trip
    Travel from Chicago to Glasgow from £362 round trip
    Travel from Chicago to Edinburgh from £365 round trip
    Travel from Chicago to Almaty from £937 round trip

  • How does Cheapflights help users find flights from Chicago?

    900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight from Chicago today with Cheapflights!

  • Why should you use Cheapflights to find cheap flight tickets from Chicago?

    Millions of users choose and trust Cheapflights to book the best flight deals from Chicago for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

  • Can Cheapflights find flights from Chicago with no change fees?

    Yes, we can. To see specific flights from Chicago with no change fees, users can toggle flexible booking options after using the search form above to find flights.

  • Can Cheapflights notify me if prices for flights from Chicago become cheaper?

    Yes! Start tracking prices for flights from Chicago 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 the alerts.

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Chicago?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight from Chicago today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Chicago?

Millions of users choose and trust Cheapflights to book the best flight deals from Chicago for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Chicago with no change fees?

Yes, we can. To see specific flights from Chicago with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Chicago become cheaper?

Yes! Start tracking prices for flights from Chicago 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 the alerts.

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