Cheapest return flights from St. Louis to London in May from $879

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 Iberia
22 May - 26 May Air Canada
02 May - 09 May Turkish Airlines
22 May - 13 Jun Air Canada
03 May - 10 May Turkish Airlines
13 May - 27 May Turkish Airlines
27 May - 11 Jun WestJet
31 May - 30 Jun Turkish Airlines
22 May - 29 May Turkish Airlines
21 May - 13 Jun Turkish Airlines

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

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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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