Cheapest return flights from St. Louis to London in June from $1306

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

Return flights

26 Jun - 30 Jun Air Canada
19 Jun - 03 Jul Air Canada
16 Jun - 30 Jun Air Canada
16 Jun - 30 Jun American Airlines direct
26 Jun - 30 Jun American Airlines direct

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

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