$419 Cheap Flights from St. Louis (STL) to London (LGW)

View $419 flight on Sun, Jan 25, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Gatwick Airport (LGW)

Cheap Flights from St. Louis to London (STL-LGW)

Prices were available within the past 7 days and start at $419 for one-way flights and $624 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Oct 14 - Tue, Oct 21
STL
St. Louis
LGW
London
$624 Roundtrip, found 2 days ago
$624
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Oct 14 from St. Louis to London, returning Tue, Oct 21, priced at $624 found 2 days ago
American Airlines
Tue, Oct 14 - Tue, Oct 21
STL
St. Louis
LGW
London
$625 Roundtrip, found 2 days ago
$625
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Oct 14 from St. Louis to London, returning Tue, Oct 21, priced at $625 found 2 days ago
American Airlines
Tue, Oct 14 - Tue, Oct 21
STL
St. Louis
LGW
London
$626 Roundtrip, found 2 days ago
$626
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Oct 14 from St. Louis to London, returning Tue, Oct 21, priced at $626 found 2 days ago
American Airlines
Wed, Jan 7 - Wed, Jan 28
STL
St. Louis
LGW
London
$630 Roundtrip, found 4 days ago
$630
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Jan 7 from St. Louis to London, returning Wed, Jan 28, priced at $630 found 4 days ago
American Airlines
Wed, Jan 7 - Wed, Jan 28
STL
St. Louis
LGW
London
$631 Roundtrip, found 4 days ago
$631
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Jan 7 from St. Louis to London, returning Wed, Jan 28, priced at $631 found 4 days ago
American Airlines
Wed, Jan 7 - Wed, Jan 28
STL
St. Louis
LGW
London
$632 Roundtrip, found 4 days ago
$632
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Jan 7 from St. Louis to London, returning Wed, Jan 28, priced at $632 found 4 days ago
American Airlines
Wed, Jan 7 - Wed, Jan 28
STL
St. Louis
LGW
London
$642 Roundtrip, found 4 days ago
$642
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Jan 7 from St. Louis to London, returning Wed, Jan 28, priced at $642 found 4 days ago
Air Canada
Sat, Nov 15 - Sat, Nov 22
STL
St. Louis
LGW
London
$674 Roundtrip, found 4 days ago
$674
Roundtrip
found 4 days ago
Select Air Canada flight, departing Sat, Nov 15 from St. Louis to London, returning Sat, Nov 22, priced at $674 found 4 days ago
Iberia
Tue, Mar 3 - Mon, Mar 9
STL
St. Louis
LGW
London
$684 Roundtrip, found 4 days ago
$684
Roundtrip
found 4 days ago
Select Iberia flight, departing Tue, Mar 3 from St. Louis to London, returning Mon, Mar 9, priced at $684 found 4 days ago
British Airways
Sun, Jan 25 - Sat, Jan 31
STL
St. Louis
LGW
London
$715 Roundtrip, found 12 hours ago
$715
Roundtrip
found 12 hours ago
Select British Airways flight, departing Sun, Jan 25 from St. Louis to London, returning Sat, Jan 31, priced at $715 found 12 hours ago

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city center is 28 minutes. Flights from $633
LHR
Heathrow
Cheapest
Average driving time to city center28 min
Flights from $633
Select flight to London City LCY. Closest option available. Average driving time to city center is 21 minutes. Flights from $1,301
LCY
London City
Closest
Average driving time to city center21 min
Flights from $1,301

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW) cost?
Grab a cheap one-way flight from $419 or cheap return flight from $624 from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW)?
Planning your getaway for October may help you find better deals, as it's the cheapest month for flights between STL and LGW. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from STL to LGW. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to LGW?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW) last-minute?
Last-minute bookings from STL to LGW are usually more expensive. To secure the lowest prices, start searching for flights early. That said, if you're flexible with your travel dates, it's possible to score a cheap ticket right before your journey.
Is it cheaper to book a STL to LGW flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to LGW flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place will take the hassle out of travel planning. Simply secure your flights and choose from our extensive range of stays, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Gatwick Airport (LGW)?
If you booked your STL to LGW flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Gatwick
Airlines serving
American Airlines, British Airways, Iberia, Turkish Airlines
Roundtrip price
$623
Distance
4210 mi

Book with confidence

Book with confidence

St. Louis to London Flights

The cheapest times to fly from St. Louis to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to London are during the month of October. You can find some of the cheapest flights from St. Louis to London with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to London

Sunday is one of the best days to book for cheap flights from St. Louis to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to London in 2025. You can also book with separate airlines for your outbound and return journeys, from $419 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to London Flights

Explore a world of travel with Expedia

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*Available to One Key members.