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Cheap flights from London, ON to Chicago O'Hare Intl Airport from C$ 344

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 20/3. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
5 Mar — 12 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to O'Hare Intl

Enter your travel dates to find the best prices.

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 3 February 2026.

Wed 27/56:15 a.m.
YXU
-
ORD
1 stop11h 25m
WestJet
Thu 28/55:30 p.m.
ORD
-
YXU
3 stops19h 15m
WestJet
Deal found 1/2C$ 638
Mon 23/25:10 a.m.
YXU
-
ORD
1 stop5h 03m
Air Canada
Thu 26/210:00 a.m.
ORD
-
YXU
1 stop6h 05m
Air Canada
Deal found 2/2C$ 688
Mon 23/25:10 a.m.
YXU
-
ORD
1 stop5h 03m
Air Canada
Mon 2/310:00 a.m.
ORD
-
YXU
1 stop6h 05m
Air Canada
Deal found 2/2C$ 690
Mon 23/25:10 a.m.
YXU
-
ORD
1 stop5h 03m
Air Canada
Tue 3/37:15 a.m.
ORD
-
YXU
2 stops8h 50m
Air Canada
Deal found 2/2C$ 695
Sun 8/35:10 a.m.
YXU
-
ORD
1 stop5h 40m
Air Canada
Fri 13/31:55 p.m.
ORD
-
YXU
1 stop6h 26m
Air Canada
Deal found 2/2C$ 698
Thu 19/38:10 p.m.
YXU
-
ORD
1 stop18h 25m
Multiple Airlines
Thu 26/35:01 a.m.
ORD
-
YXU
2 stops24h 34m
Multiple Airlines
Deal found 2/2C$ 713
Thu 12/39:40 a.m.
YXU
-
ORD
1 stop4h 21m
Air Canada
Sun 15/310:00 a.m.
ORD
-
YXU
1 stop6h 05m
Air Canada
Deal found 1/2C$ 743
Thu 19/35:10 a.m.
YXU
-
ORD
1 stop5h 03m
Air Canada
Thu 26/31:55 p.m.
ORD
-
YXU
1 stop6h 26m
Air Canada
Deal found 2/2C$ 755

Find flight deals from London to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 February 2026.

Round-trip from

C$ 638

One-way from

C$ 344
WestJet
  • WestJet
  • 27/5-28/5
  • 4 total stops
  • 30h 40m total
  • London to Chicago
Search Deals
Air Canada
  • Air Canada
  • 20/3
  • 1 total stop
  • 5h 03m total
  • London to Chicago
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 3 February 2026.
Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

Fly from

London

Fly to

O'Hare Intl

Route

Depart

Return

Price

LondonChicago

YXU - ORD

YXUORD

London

Mon 23/2

5:10 a.m.-9:13 a.m.

1 stop5h 03m

Chicago O'Hare Intl

Thu 26/2

10:00 a.m.-5:05 p.m.

1 stop6h 05m

C$ 688

LondonChicago

YXU - ORD

YXUORD

London

Mon 23/2

5:10 a.m.-9:13 a.m.

1 stop5h 03m

Chicago O'Hare Intl

Mon 2/3

10:00 a.m.-5:05 p.m.

1 stop6h 05m

C$ 690

LondonChicago

YXU - ORD

YXUORD

London

Mon 23/2

5:10 a.m.-9:13 a.m.

1 stop5h 03m

Chicago O'Hare Intl

Sun 1/3

1:55 p.m.-9:21 p.m.

1 stop6h 26m

C$ 690

LondonChicago

YXU - ORD

YXUORD

London

Mon 23/2

5:10 a.m.-9:13 a.m.

1 stop5h 03m

Chicago O'Hare Intl

Tue 3/3

7:15 a.m.-5:05 p.m.

2 stops8h 50m

C$ 695

LondonChicago

YXU - ORD

YXUORD

London

Sun 8/3

5:10 a.m.-9:50 a.m.

1 stop5h 40m

Chicago O'Hare Intl

Fri 13/3

1:55 p.m.-9:21 p.m.

1 stop6h 26m

C$ 698

LondonChicago

YXU - ORD

YXUORD

London

Thu 19/3

8:10 p.m.-1:35 p.m.

1 stop18h 25m

Chicago O'Hare Intl

Thu 26/3

5:01 a.m.-6:35 a.m.

2 stops24h 34m

C$ 713

LondonChicago

YXU - ORD

YXUORD

London

Wed 27/5

9:30 a.m.-1:25 p.m.

1 stop4h 55m

Chicago O'Hare Intl

Thu 28/5

2:15 p.m.-9:38 p.m.

1 stop6h 23m

C$ 743

LondonChicago

YXU - ORD

YXUORD

London

Thu 19/3

5:10 a.m.-9:13 a.m.

1 stop5h 03m

Chicago O'Hare Intl

Thu 26/3

1:55 p.m.-9:21 p.m.

1 stop6h 26m

C$ 755

LondonChicago

YXU - ORD

YXUORD

London

Fri 20/3

5:10 a.m.-9:13 a.m.

1 stop5h 03m

C$ 344

LondonChicago

YXU - ORD

YXUORD

London

Thu 21/5

6:00 a.m.-9:05 a.m.

1 stop4h 05m

C$ 408

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 14 results
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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.
Estimated round-trip 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

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

Currently, April is the cheapest month in which you can book a flight from London, Ontario to Chicago O'Hare Intl Airport (average of C$ 112). Flying from London, Ontario to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 264). 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.

Related info for your journey

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

  • What airport do you fly from for flights from London to Chicago O'Hare Intl?

    London (YXU) is the airport you will fly out of if you book a flight from London to Chicago O'Hare Intl. You should not have trouble finding flights to Chicago O'Hare Intl from London; the airport handles an average of 0 outbound flights to Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the London airport to Chicago O'Hare Intl. It is only a 8.6 km journey to London (YXU) from London’s city centre.

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

    For as low as C$ 688, Air Canada can have you in Chicago O'Hare Intl Airport from London, Ontario in 5h 03m. There are 565 km between London, Ontario and Chicago O'Hare Intl Airport.

  • 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 vacation 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, Ontario to Chicago O'Hare Intl Airport?

    Currently, April is the cheapest month in which you can book a flight from London, Ontario to Chicago O'Hare Intl Airport (average of C$ 112). Flying from London, Ontario to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 264). 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

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

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Evanston
Des Plaines
Skokie
Elk Grove Village
Downers Grove
Racine
Naperville
Bolingbrook
Romeoville

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

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

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