Cheapest return flights from St. Louis to London in May from 810€

AirHint found the following cheapest return flights from St. Louis (STL) to London (LGW) in May 2026 (see full year).

Return flights

01 May - 08 May Alaska Airlines
11 May - 21 May Alaska Airlines
17 May - 31 May Lufthansa
05 May - 12 May Alaska Airlines
16 May - 30 May Alaska Airlines
21 May - 31 May Alaska Airlines
27 May - 11 Jun Aer Lingus
12 May - 22 May Alaska Airlines
19 May - 29 May Alaska Airlines
31 May - 30 Jun Aer Lingus

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

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