Cheap flights from Chicago to London, Ontario from $216
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to London, Ontario departing on 5/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Chicago to London
Cheap round-trip flights
United Airlines flights from Chicago to London, Ontario
Our best United Airlines deals on Chicago to London, Ontario flight tickets
Air Canada flights from Chicago to London, Ontario
Our best Air Canada deals on Chicago to London, Ontario flight tickets
See travel insights to London from
How to get the cheapest flight ticket from Chicago to London, Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to London, Ontario?
According to our data, Thursday is the cheapest day to fly to London, Ontario from Chicago. The lowest ticket price found for a Thursday departure recently was $316. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to London, Ontario on Tuesday is $780.
What is the cheapest time of day to depart on your flight to London, Ontario?
In the morning is the cheapest time of day to fly from Chicago to London, Ontario when you can find flight prices for as low as $587. Flying to London, Ontario in the morning is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to London, Ontario, so prices are often more expensive at around $764 per ticket.
What is the cheapest airline that flies from Chicago to London?
Air Canada is the most popular carrier operating from Chicago to London
What airlines fly to London, Ontario?
Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to London, Ontario from Chicago according to our data. Air Canada is the first choice among our users, with 44% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 4 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.
When to book flights from Chicago to London, Ontario
Cheap Chicago to London, Ontario (CHI to YXU) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to London, Ontario
How far is Chicago to London by plane?
Chicago and London are 334.6 mi apart from one another. In terms of flight time, this usually takes a little over 4h 28m.
When did momondo last update prices for flights from Chicago to London Airport?
Prices for flights from Chicago to London Airport refresh daily.
How many operators does momondo search for flights from Chicago to London Airport?
As of April 2025, there is 1 operator available to choose from for flights from Chicago to London Airport.
How old do you have to be to fly from Chicago to London Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to London Airport.
What documentation or ID do you need to fly to London Airport?
The travel and health documents required for your trip to London Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Chicago to London, Ontario
Compare and see reviews for airlines that fly from Chicago to London, Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $565 | Free Cancellation | Rating 7.0 9,127 reviews |
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Chicago to London?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to London for you.
Can I find flights from Chicago to London with flexible booking policies on momondo?
Flights from Chicago to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Chicago to London?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to London.
I’m not ready to book a flight from Chicago to London right now. Can momondo alert me if prices change?
Price alerts on flights to London from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.