£73+ Cheap flights from Chicago O'Hare Intl Airport

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/10. 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.
ORD — LHR
2 Sep — 9 Sep1
1 adult

What to know about flights from O'Hare Intl

Discover essential information about flights departing from O'Hare Intl, including flight schedules, destinations, airlines operating at the O'Hare Intl 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 28 August 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 O'Hare Intl (avg. price of £120).
Price to beat on a round-trip flight from Chicago O'Hare Intl.
Price to beat on a one-way flight from Chicago O'Hare Intl.

Find flights from O'Hare Intl

Cheapest flights from O'Hare Intl
Explore the most affordable flight options available from O'Hare Intl. Find the lowest fares based on data from user searches, with prices last updated on 28 August 2025.

Wed 8/1022:15ORD - GLA
1 stop9h 10mIcelandair
Wed 15/1014:20GLA - ORD
1 stop33h 55mIcelandair
Deal found 27/8£357
Thu 30/1019:30ORD - GLA
1 stop9h 25mIcelandair
Fri 7/1112:35GLA - ORD
1 stop10h 45mIcelandair
Deal found 27/8£367
Fri 7/1119:20ORD - LHR
2 stops32h 15mScandinavian Airlines
Sat 15/1106:40LHR - ORD
2 stops40h 05mScandinavian Airlines
Deal found 26/8£373
Fri 19/922:15ORD - LGW
1 stop10h 25mIcelandair
Tue 30/915:40LGW - ORD
1 stop32h 35mIcelandair
Deal found 26/8£373
Fri 7/1119:20ORD - LHR
2 stops15h 05mScandinavian Airlines
Thu 13/1107:05LHR - ORD
2 stops15h 40mScandinavian Airlines
Deal found 27/8£374
Thu 11/922:15ORD - LGW
1 stop10h 25mIcelandair
Tue 14/1015:40LGW - ORD
1 stop32h 35mIcelandair
Deal found 27/8£374
Mon 22/919:25ORD - LHR
1 stop10h 30mIcelandair
Tue 30/921:25LHR - ORD
1 stop26h 50mIcelandair
Deal found 27/8£375
Fri 10/1022:15ORD - LGW
1 stop10h 25mIcelandair
Sun 12/1015:40LGW - ORD
1 stop32h 35mIcelandair
Deal found 25/8£375
Mon 22/919:25ORD - LHR
1 stop10h 30mIcelandair
Sun 5/1021:25LHR - ORD
1 stop26h 50mIcelandair
Deal found 26/8£376
Sat 6/916:35ORD - LGW
1 stop31h 45mMultiple Airlines
Wed 10/914:00LGW - ORD
1 stop32h 12mMultiple Airlines
Deal found 26/8£376
Sat 6/1219:20ORD - LHR
1 stop14h 40mScandinavian Airlines
Mon 29/1206:40LHR - ORD
1 stop16h 05mScandinavian Airlines
Deal found 26/8£376
Wed 10/919:25ORD - LGW
1 stop13h 15mIcelandair
Wed 17/915:35LGW - ORD
1 stop11h 40mIcelandair
Deal found 26/8£376

Find flights from O'Hare Intl within your budget

 
Find flights departing from O'Hare Intl 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 28 August 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Wed 8/10

22:15-13:25

1 stop9h 10m

Glasgow Intl

Wed 15/10

14:20-18:15

1 stop33h 55m

£357

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Thu 30/10

19:30-09:55

1 stop9h 25m

Glasgow Intl

Fri 7/11

12:35-17:20

1 stop10h 45m

£367

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Thu 4/12

18:30-10:55

1 stop10h 25m

London Gatwick

Thu 11/12

11:55-17:20

1 stop11h 25m

£376

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 1/12

18:30-14:00

1 stop13h 30m

London Luton

Sun 14/12

06:00-17:20

1 stop17h 20m

£377

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Mon 20/10

19:25-16:05

2 stops14h 40m

London Stansted

Sun 2/11

15:00-17:20

2 stops32h 20m

£380

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 15/12

18:30-14:00

1 stop13h 30m

London Luton

Wed 24/12

07:30-17:20

1 stop15h 50m

£382

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Thu 30/10

20:50-23:50

2 stops22h 00m

London Stansted

Thu 13/11

16:40-16:45

3 stops30h 05m

£383

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Fri 7/11

18:30-10:55

1 stop10h 25m

London Gatwick

Sun 16/11

11:55-17:20

1 stop11h 25m

£384

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Thu 6/11

18:30-10:55

1 stop10h 25m

London Gatwick

Sun 16/11

11:55-17:20

1 stop11h 25m

£384

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Thu 6/11

18:30-10:55

1 stop10h 25m

London Gatwick

Tue 11/11

11:55-17:20

1 stop11h 25m

£384

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from O'Hare Intl

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

Travel insights for flights from O'Hare Intl

Get recent, data-driven insights about flights from O'Hare Intl including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to Heathrow. Price data was last updated on 22 August 2025.

Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago O'Hare Intl Airport. 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 O'Hare Intl Airport?

Currently, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport (average of £291). Flying from Chicago O'Hare Intl Airport in June will prove the most costly (average of £667). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Airline reviews for flights from O'Hare Intl

Get insights into the airlines that provide service from O'Hare Intl. 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 O'Hare Intl. In the last 7 days, Cheapflights users made a total of 858,174 searches.
Read reviews from past customers who have flown Finnair, United Airlines, andIberia from Chicago O'Hare Intl Airport. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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.

Alternate flight departure points to O'Hare Intl

Consider leaving from one of these other departure points that are located a short distance from O'Hare Intl. Flight origins were last updated on 28 August 2025.

Related info for your journey

Access useful and relevant information related to your journey from O'Hare Intl. 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 28 August 2025.
  • What are the most popular destinations to fly to from Chicago O'Hare Intl Airport?

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

  • What is the cheapest flight from Chicago O'Hare Intl Airport to anywhere?

    Users have flown out of Chicago O'Hare Intl Airport for as low as £21 to West Palm Beach (prices may vary depending on the airline and departure time). On average, users have booked flights for £537 to fly from Chicago O'Hare Intl Airport.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to anywhere?

    Over the past few days, we've found that Frontier, Spirit Airlines, and American Airlines have the cheapest prices from Chicago O'Hare Intl Airport. Frontier flights from Chicago O'Hare Intl Airport to Atlanta Hartsfield-Jackson (£21), Spirit Airlines flights from Chicago O'Hare Intl Airport to Las Vegas Harry Reid Intl (£33), and American Airlines flights from Chicago O'Hare Intl Airport to Dallas/Fort Worth (£68).

  • What is the cheapest premium economy flight from Chicago O'Hare Intl Airport?

    Here are some of the cheapest offers we have found for the cheapest premium economy flights from Chicago O'Hare Intl Airport.
    Chicago O'Hare Intl to Minneapolis from £226
    Chicago O'Hare Intl to South Bend from £251
    Chicago O'Hare Intl to Columbus Airport from £260
    Chicago O'Hare Intl to Newark Airport from £285

  • What is the cheapest first class flight from Chicago O'Hare Intl Airport?

    If you’re looking for a cheap first-class flight from Chicago O'Hare Intl Airport, consider Detroit. Prices start at £318 so you can fly first-class even on a budget.

  • What is the cheapest month to fly from Chicago O'Hare Intl Airport?

    At the present moment the cheapest month to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport?

    Check out the cheapest flights from Chicago O'Hare Intl Airport to embark to:
    Travel from Chicago to London from £297 round trip
    Travel from Chicago to Edinburgh from £351 round trip
    Travel from Chicago to Glasgow from £385 round trip
    Travel from Chicago to Almaty from £942 round trip

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

    Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from O'Hare Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

    Cheapflights simply makes it quick and affordable to book flights from O'Hare Intl by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

    Certainly. Search results for flights from O'Hare Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

    Of course! You can now track prices for flights from O'Hare Intl and get an alert from Cheapflights when they change. Click the bell icon next to the flight deals above and provide your email address to set up price alerts.

See more FAQs

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 O'Hare Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from O'Hare Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights simply makes it quick and affordable to book flights from O'Hare Intl by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights from O'Hare Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Of course! You can now track prices for flights from O'Hare Intl and get an alert from Cheapflights when they change. Click the bell icon next to the flight deals above and provide your email address to set up price 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.