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Cheap Flights from St. Louis to London $526.39

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Cheapest Flights from St. Louis to London (STL to LHR)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from St. Louis to London (STL to LHR)

Question : Looking for the cheapest flight over the next 30 days?
Answer : As of January 23rd, the cheapest day to fly from Saint Louis to London is February 15th. Tickets have been sold for 25% below the average price for this route.

Question : How long are most people's visits to London when they fly in from Saint Louis?
Answer : Over the next two months, passengers from STL to LHR are planning on staying for eight days on average.

Question : If your plans are flexible, have you considered changing your departure day?
Answer : Wednesday is your lowest-cost day to fly in February. Having flexibility in your travel plans means you can save, so be sure to plan ahead when possible.

Question : How often is the price changing when booking a trip from Lambert-St. Louis International Airport (STL) to London Heathrow Airport (LHR)?
Answer : Prices for this trip tend to fluctuate a lot more than others. The further out you book a route, the more likely you are to save.