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Cheap Flights from St. Louis to London $788.49

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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 : Should you take that vacation to London in the next 30 days?
Answer : As of December 5th, the cheapest day to fly from Saint Louis to London is December 18th. Tickets have been sold for 18% below the average price for this route.

Question : How long do most people stay in London when they fly in from Saint Louis?
Answer : The average time spent in London by travelers flying from STL is eight days.

Question : If your plans are flexible, have you considered changing your departure day?
Answer : In December, Tuesday is your cheapest day to fly. Flexibility is paramount when booking travel plans in order to keep costs down.

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 are fluctuating a lot more for this route than most. Prices tend to be lower the further out you book.