Cheapest return STL–LGW flights, May

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

Return flights

26 May - 30 May Frontier Airlines
24 May - 29 May Frontier Airlines
22 May - 30 May Frontier Airlines
19 May - 27 May Frontier Airlines
27 May - 31 May Frontier Airlines
12 May - 20 May Air Canada
20 May - 31 May Frontier Airlines
18 May - 26 May Frontier Airlines
19 May - 24 May Frontier Airlines
11 May - 25 May Frontier Airlines

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

Powered by

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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.