HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$185+ Cheap flights from Chicago (CHI) to London, ON (YXU)

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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YXU
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Chicago to London

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 November 10, 2025.

This Air Canada deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:00 pmORD - YXU
1 stop6h 21mAir Canada
Tue 12/309:25 amYXU - ORD
1 stop4h 36mAir Canada
Deal found 11/8$621
This Air Canada deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/810:00 amORD - YXU
1 stop6h 05mAir Canada
Mon 12/159:25 amYXU - ORD
1 stop4h 36mAir Canada
Deal found 11/10$640
This Air Canada deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/310:00 amORD - YXU
1 stop6h 05mAir Canada
Wed 12/109:25 amYXU - ORD
1 stop4h 36mAir Canada
Deal found 11/9$650
This Air Canada deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:55 pmORD - YXU
1 stop4h 26mAir Canada
Fri 12/269:25 amYXU - ORD
1 stop4h 36mAir Canada
Deal found 11/8$688
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:24 pmORD - YXU
2 stops6h 57mUnited Airlines
Thu 1/19:25 amYXU - ORD
1 stop4h 36mUnited Airlines
Deal found 11/10$706
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:00 pmORD - YXU
1 stop6h 21mUnited Airlines
Tue 12/309:25 amYXU - ORD
2 stops15h 19mUnited Airlines
Deal found 11/8$712
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:15 pmORD - YXU
2 stops18h 50mUnited Airlines
Wed 12/319:25 amYXU - ORD
1 stop6h 45mUnited Airlines
Deal found 11/9$729
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/810:00 amORD - YXU
2 stops10h 21mUnited Airlines
Mon 12/159:25 amYXU - ORD
1 stop6h 45mUnited Airlines
Deal found 11/10$735

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 November 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$621
(Air Canada)

One-way from

$185
(Kiwi.com)
Provider with most accurate pricing for Chicago (CHI)-London flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-London flights.
Search Deals
From Chicago (CHI) to London
Search Deals
One-way flight from Chicago (CHI) 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 2,558,603 searches. Data last updated November 10, 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

Fri 4/24

2:00 pm-9:18 pm

1 stop6h 18m

London

Sun 4/26

9:25 am-1:00 pm

1 stop4h 35m

$621

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 12/25

2:00 pm-9:21 pm

1 stop6h 21m

London

Thu 1/1

9:25 am-1:01 pm

1 stop4h 36m

$621

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 12/23

2:00 pm-9:21 pm

1 stop6h 21m

London

Tue 12/30

9:25 am-1:01 pm

1 stop4h 36m

$621

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 12/8

10:00 am-5:05 pm

1 stop6h 05m

London

Mon 12/15

9:25 am-1:01 pm

1 stop4h 36m

$640

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 12/8

6:00 am-7:12 pm

3 stops36h 12m

$244

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 12/8

2:20 pm-7:12 pm

1 stop27h 52m

$253

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 12/25

10:00 am-5:05 pm

1 stop6h 05m

$286

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 12/25

8:00 am-6:34 am

2 stops21h 34m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Compare providers for flights from Chicago to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to London in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-London, Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago-London, Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago-London, Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-London, Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-London, Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, October is the cheapest month in which you can book a flight from Chicago to London, Ontario (average of $85). Flying from Chicago to London, Ontario in July is currently the most expensive (average of $187). 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?

    Located just 5.3 mi from the city center, London is the airport most travelers will use when flying to London from Chicago. Booking flights from Chicago to London (YXU) should be relatively easy as there are 0 daily inbound flights from Chicago from 0 different airlines.

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

    For as low as $621, Air Canada can have you in London, Ontario from Chicago in 6h 18m. There are 351 mi 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, October is the cheapest month in which you can book a flight from Chicago to London, Ontario (average of $85). Flying from Chicago to London, Ontario in July is currently the most expensive (average of $187). 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

Traveling to a place near London?

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

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.

Alternative routes for Chicago to London

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Pearson Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Midway to Toronto Island flights
O'Hare Intl to Toronto Island flights
Midway to Pearson Intl flights
Midway to Pierre Elliott Trudeau Intl flights
St. Louis to Pearson Intl flights
O'Hare Intl to Ottawa flights
St. Louis to Pierre Elliott Trudeau Intl flights
Midway to Ottawa flights
O'Hare Intl to Thunder Bay flights
Midway to Thunder Bay flights
O'Hare Intl to Hamilton flights
O'Hare Intl to London flights
St. Louis to Ottawa flights
Peoria to Pierre Elliott Trudeau Intl flights
Evansville to Pierre Elliott Trudeau Intl flights
Moline to Pearson Intl flights
Springfield to Pearson Intl flights
Bloomington to Pierre Elliott Trudeau Intl flights
Evansville to Pearson Intl flights
Bloomington to Ottawa flights
O'Hare Intl to Kingston flights
Dubuque to Pearson Intl flights
Champaign to Pearson Intl flights

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.