Cheapest return flights from St. Louis to London in December from $1530

Best time to book flights for St. Louis (STL) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from St. Louis (STL) to London (LGW) in December 2025 (see full year).

Return flights

20 Dec - 30 Dec Southern Airways Express
24 Dec - 31 Dec Iberia

Also check the deals for one-way flights from St. Louis to London in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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