$203+ Cheap flights from Illinois 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Illinois 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.Cheap flight deals from Illinois to London
Keep the following information in mind while searching for Illinois to London flight deals. Data was last updated June 12, 2025.
Round-trip from | $420 (Flightnetwork) |
|---|---|
One-way from | $214 (Mytrip) |
Find flight deals from Illinois to London
Cheapest flights from Illinois to LondonExplore the most affordable flight options available from Illinois to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Illinois to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This Flightnetwork deal was found by Cheapflights users on 6/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KAYAK deal was found by Cheapflights users on 6/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois 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 June 12, 2025.
Use the filters below to find and compare flights from Illinois to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoLondon
ORD - YXU
ORDYXU
Chicago O'Hare Intl
Fri 7/25
3:50 pm-9:27 pm
1 stop4h 37m
London
Fri 8/1
6:15 am-9:09 am
1 stop3h 54m
ChicagoLondon
ORD - YXU
ORDYXU
Chicago O'Hare Intl
Tue 7/8
10:43 am-9:00 pm
2 stops33h 17m
London
Tue 7/15
6:15 am-9:09 am
1 stop3h 54m
ChicagoLondon
ORD - YXU
ORDYXU
Chicago O'Hare Intl
Sun 7/27
7:00 am-3:02 pm
2 stops7h 02m
London
Sun 8/3
9:55 am-1:13 pm
1 stop4h 18m
ChicagoLondon
ORD - YXU
ORDYXU
Chicago O'Hare Intl
Mon 6/30
11:50 am-5:14 am
2 stops16h 24m
ChicagoLondon
ORD - YXU
ORDYXU
Chicago O'Hare Intl
Fri 7/25
8:40 am-9:27 pm
2 stops11h 47m
Best time to book a flight from Illinois to London
Have a flexible travel schedule? Discover the best time to fly to London from Illinois with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Illinois to London
What is the cheapest time of day to fly from IL to YXU?
Find hourly flight availability from Illinois to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to London, Ontario as you normally would.
Rainfall in London by month
Plan your trip to London by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London, Ontario ranges from 2.8 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. March is typically the driest time to visit London, Ontario when rainfall is around 2.8 in.
Temperature in London by month
Plan your trip to London by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London, Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated June 12, 2025.
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Thomas,Mar 2025
SFO - TPE
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Thomas,Mar 2025
SFO - TPE
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Thomas,Mar 2025
SFO - TPE