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Cheap flights from Chicago to London, ON from C$ 328

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 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YXU
22 Nov — 29 Nov1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Chicago to London

Enter your travel dates to find the best prices.

Cheapest flights from Chicago to London
Explore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 October 2025.

Thu 4/1211:44 a.m.ORD - YXU
2 stops30h 28mMultiple Airlines
Thu 11/128:10 p.m.YXU - ORD
1 stop18h 25mMultiple Airlines
Deal found 21/10C$ 650
Thu 4/1210:00 a.m.ORD - YXU
1 stop6h 05mAir Canada
Thu 11/129:25 a.m.YXU - ORD
1 stop6h 45mAir Canada
Deal found 22/10C$ 869
Sun 7/123:55 p.m.ORD - YXU
1 stop4h 26mAir Canada
Sun 14/125:15 a.m.YXU - ORD
2 stops7h 03mAir Canada
Deal found 23/10C$ 878
Thu 30/102:20 p.m.ORD - YXU
1 stop27h 52mMultiple Airlines
Wed 12/118:10 p.m.YXU - ORD
2 stops28h 34mMultiple Airlines
Deal found 22/10C$ 969
Sun 7/122:00 p.m.ORD - YXU
1 stop6h 21mUnited Airlines
Sun 14/129:25 a.m.YXU - ORD
1 stop6h 45mUnited Airlines
Deal found 23/10C$ 976
Wed 3/1211:51 a.m.ORD - YXU
2 stops8h 30mUnited Airlines
Wed 10/129:25 a.m.YXU - ORD
1 stop4h 36mUnited Airlines
Deal found 21/10C$ 988
Thu 4/1211:00 a.m.ORD - YXU
2 stops9h 21mUnited Airlines
Thu 11/125:15 a.m.YXU - ORD
2 stops10h 25mUnited Airlines
Deal found 22/10C$ 1,011
Wed 19/113:55 p.m.ORD - YXU
1 stop4h 26mUnited Airlines
Wed 26/115:15 a.m.YXU - ORD
1 stop5h 50mUnited Airlines
Deal found 22/10C$ 1,016

Cheap flight deals from Chicago to London

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to London (YXU). 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 23 October 2025.

Round-trip from

C$ 650

One-way from

C$ 328
WestJet
  • WestJet
  • 4/12-11/12
  • 3 total stops
  • 48h 53m total
  • Chicago to London
Search Deals
7/12
  • 7/12
  • 2 total stops
  • 31h 48m total
  • Chicago to London
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to London 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 23 October 2025.
Use the filters below to find and compare flights from Chicago to London that are best for you.

Fly from

Chicago

Fly to

London

Route

Depart

Return

Price

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 4/12

11:44 a.m.-7:12 p.m.

2 stops30h 28m

London

Thu 11/12

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

1 stop18h 25m

C$ 650

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 4/12

3:55 p.m.-9:21 p.m.

1 stop4h 26m

London

Thu 11/12

5:15 a.m.-9:13 a.m.

1 stop4h 58m

C$ 869

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 7/12

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

1 stop6h 05m

London

Sun 14/12

9:25 a.m.-1:01 p.m.

1 stop4h 36m

C$ 869

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 3/12

3:55 p.m.-9:21 p.m.

1 stop4h 26m

London

Wed 10/12

9:25 a.m.-1:01 p.m.

1 stop4h 36m

C$ 869

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 5/12

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

1 stop6h 05m

London

Fri 12/12

5:15 a.m.-9:13 a.m.

1 stop4h 58m

C$ 869

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 7/12

2:00 p.m.-9:21 p.m.

1 stop6h 21m

London

Sun 14/12

9:25 a.m.-3:10 p.m.

1 stop6h 45m

C$ 976

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 5/12

8:45 a.m.-5:05 p.m.

2 stops7h 20m

London

Fri 12/12

9:25 a.m.-3:10 p.m.

1 stop6h 45m

C$ 988

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 7/12

10:24 a.m.-7:12 p.m.

2 stops31h 48m

C$ 328

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 7/12

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

1 stop6h 05m

C$ 400

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 15/4

4:15 p.m.-9:18 p.m.

1 stop4h 03m

C$ 407

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/10

Showing 1-10 of 15 results
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Best time to book a flight from Chicago to London

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

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

Currently, March is the cheapest month in which you can book a flight from Chicago to London, Ontario (average of C$ 148). Flying from Chicago to London, Ontario in July is currently the most expensive (average of C$ 262). 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 Chicago to London. 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 into for flights to London from Chicago?

    Most people fly into London (YXU) if they book a flight to London from Chicago. On average, London has 0 inbound flights from Chicago per day from 0 airlines. London is conveniently located just 8.6 km from London’s city centre.

  • How long is the flight from Chicago to London, Ontario?

    Air Canada can get you from Chicago to London, Ontario in just under 4h 26m. Your travel time can differ by up to . There are 565 km between Chicago and London, Ontario.

  • Can I find deals for flights from Chicago to London that include hotel bookings?

    Yes. In addition to deals on Chicago to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to London?

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

  • Can I find deals for business class flights from Chicago to London?

    Yes. Cheapflights offers flight deals from Chicago 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 to London, Ontario?

    Currently, March is the cheapest month in which you can book a flight from Chicago to London, Ontario (average of C$ 148). Flying from Chicago to London, Ontario in July is currently the most expensive (average of C$ 262). 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 London?

Book flights to London if you plan to visit one of these locations
Port Stanley
Grand Bend

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Deals for Chicago to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Chicago.

Can Cheapflights find flights from Chicago to London with no change fees?

Certainly. Search results for flights to London from Chicago 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 Chicago to London become cheaper?

Yes! Start tracking prices for Chicago to London 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.

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