Flights from Saint Louis to London available from USD 999*

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Our best rates from Saint Louis to London

From

May 2027

USD 999*

Fare: Round trip/Economy

Jun 2027

USD 1,664*

Fare: Round trip/Economy

MAY

Fly in the next 3 months: flights from Saint Louis to London (LON)

Icelandair airfare from Saint Louis to London

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*Fares displayed have been collected within the last 72 hours and may no longer be available at the time of booking. We display fares for Economy Light as standard, but it is possible to change your class of service during the booking process. You can also add baggage meals and extra legroom to your trip during booking.

Flights from Saint Louis (STL) to London (LON) in the next 365 days

Book ahead and find our best prices in 2026 and beyond

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Flights from Saint Louis (STL) to London (LON) in the next 365 days
From	To	Fare type	Dates	Price
Saint Louis (STL)	London (LGW)	Round trip / Economy	May 16 2027 - Jun 02 2027	From USD 999 Viewed 12 hrs ago
Saint Louis (STL)	London (LGW)	Round trip / Economy	May 17 2027 - Jun 04 2027	From USD 1,099 Viewed 12 hrs ago
Saint Louis (STL)	London (LHR)	Round trip / Economy	Jun 02 2027 - Jun 30 2027	From USD 1,664 Viewed 10 hrs ago
Saint Louis (STL)	London (LHR)	Round trip / Economy	Jun 18 2027 - Jun 30 2027	From USD 1,807 Viewed 56 minutes ago

*Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking. We display fares for Economy Light as standard but it is possible to change your class of service during the booking process. You can also add baggage, meals and extra legroom to your trip during booking.