Cheapest return flights from St. Louis to London in June from $725

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 June 2025 (see full year).

Return flights

09 Jun - 12 Jun Frontier Airlines
12 Jun - 15 Jun Spirit Airlines
01 Jun - 17 Jun Frontier Airlines
15 Jun - 04 Jul Frontier Airlines
05 Jun - 17 Jun Frontier Airlines
13 Jun - 01 Jul Frontier Airlines
19 Jun - 26 Jun Frontier Airlines
12 Jun - 01 Jul Frontier Airlines

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

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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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