$449 Cheap flight deals from St. Louis (STL) to London (YXU)

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Airfares from $449 One Way, $950 Round Trip from St. Louis to London

Prices starting at $950 for return flights and $449 for one-way flights to London were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 6 - Sat, Nov 7
STL
St. Louis
YKF
Kitchener
$950 Roundtrip, found 6 days ago
$950
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Nov 6 from St. Louis to Kitchener, returning Sat, Nov 7, priced at $950 found 6 days ago
Fri, Nov 6 - Sat, Nov 7
STL
St. Louis
YHM
Hamilton
$951 Roundtrip, found 6 days ago
$951
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Nov 6 from St. Louis to Hamilton, returning Sat, Nov 7, priced at $951 found 6 days ago
Sat, Jan 30 - Wed, Feb 3
STL
St. Louis
YKF
Kitchener
$1,057 Roundtrip, found 6 days ago
$1,057
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sat, Jan 30 from St. Louis to Kitchener, returning Wed, Feb 3, priced at $1,057 found 6 days ago
Fri, Nov 6 - Tue, Nov 10
STL
St. Louis
YKF
Kitchener
$1,068 Roundtrip, found 3 hours ago
$1,068
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Nov 6 from St. Louis to Kitchener, returning Tue, Nov 10, priced at $1,068 found 3 hours ago
Fri, Nov 6 - Sat, Nov 7
STL
St. Louis
YKF
Kitchener
$1,078 Roundtrip, found 6 days ago
$1,078
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Nov 6 from St. Louis to Kitchener, returning Sat, Nov 7, priced at $1,078 found 6 days ago

More About Flying To London from St. Louis

Route Information for Flights from St. Louis to London

Origin Airport IATA Code
STL
Destination Airport IATA Code
YXU
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

St. Louis to London

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Easy Flight Cancellation

In most cases, you can cancel flights from St. Louis to London online with the same ease as you booked them.

Frequently asked questions

What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.