Cheap flights from St. Louis to London

Flights starting at $388. Choose between United Airlines, Ryanair, or American Airlines to find the best price.

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Travelers usually depart from St. Louis Lambert International, or St. Louis Union Station when they travel from St. Louis to London. Book your trip to arrive at Heathrow, London Stansted, Gatwick, Luton, or London City. The most popular airlines for this route are United Airlines, Ryanair, American Airlines, Delta Air Lines, and Frontier Airlines. St. Louis and London have 401 direct flights per week. When you arrive at London, consider visiting Isle of Wight, British Museum, Tower of London, Stonehenge, St. David's Cathedral, Cardiff, Tintern Abbey, United Kingdom, St Fagans: National History Museum, Tate Modern, Natural History Museum, Roman Baths, Bath, Canterbury Cathedral, Avebury, St. Paul's Cathedral, and Portsea Island.

Check-in for a flight from St. Louis to London

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
United AirlinesUALUAYesNo
RyanairRYRFRNoOpens 24 days before flight
Closes 2 hours before flight
American AirlinesAALAAYesNo
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Learn more about COVID-19 restrictions in United Kingdom in our dedicated Stories article.

Frequently asked questions

What are the most popular routes to and from St. Louis?
Travelers frequently search for route combinations, such as St. Louis and Las Vegas, Los Angeles, Denver, Orlando, Atlanta, Minneapolis, San Diego, San Francisco, Phoenix, Seattle, Houston, Sacramento, New York, Cancún, Washington, D.C., Fort Lauderdale, Oakland, Tampa, Paris, Dallas.
What are the most popular routes to and from London?
Travelers frequently search for route combinations, such as London and New York, Los Angeles, Boston, Atlanta, Tel Aviv, San Francisco, Chicago, Dallas, Raleigh, Denver, Miami, Washington, D.C., Orlando, Paris, Houston, Minneapolis, Dublin, Seattle, Athens, Austin.
What airports are near St. Louis?
The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, General Wayne A. Downing Peoria International, Central Illinois Regional, MidAmerica St. Louis, Evansville Regional, Williamson County Regional, Abraham Lincoln Capital, Columbia Regional, Quincy Regional, Decatur.
What airports are near London?
The main airport in London is Heathrow. It is also served by Birmingham, Bristol, East Midlands, Southampton, Cardiff, Doncaster Sheffield, Bournemouth, Exeter, Humberside, Norwich.
What buses and trains depart from St. Louis?
A number of bus and train companies depart from St. Louis, including Burlington Trailways, Greyhound.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between St. Louis and London?
Yes, it's possible to combine different modes of transport between St. Louis and London thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between St. Louis and London can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.
What is Virtual Interlining and how do I use it?
Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.
Which airlines fly between St. Louis and London?
Currently, you can fly between St. Louis and London with United Airlines, Ryanair, American Airlines, Delta Air Lines, Frontier Airlines.
When's the best time to travel between St. Louis and London?
If you don’t have specific dates for your trip between St. Louis and London, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.
What flights operate between St. Louis and London?
How many airports are there near St. Louis?
How many airports are there near London?
Is it possible to reach St. Louis by bus or train?
What time do nonstop (direct) flights between St. Louis and London depart?
What time do nonstop (direct) flights between St. Louis and London arrive?
What time do flights between St. Louis and London depart?
What time do flights between St. Louis and London arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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