AirHint found the following cheapest return flights from St. Louis (STL) to London (LGW) in May 2026 (see full year).
Return flights
| 16 May - 31 May | WestJet | ||
| 15 May - 31 May | Alaska Airlines | ||
| 27 May - 11 Jun | WestJet | ||
| 17 May - 31 May | WestJet | ||
| 22 May - 29 May | WestJet | ||
| 19 May - 05 Jun | WestJet |
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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