Cheapest one-way flights from St. Louis to London in May from $356

AirHint found the following cheapest one-way flights from St. Louis (STL) to London (LHR) in May 2026 (see full year).

One-Way flights

13 May Aer Lingus
03 May Lufthansa
03 May British Airways direct
19 May Aer Lingus
13 May British Airways direct
02 May United
19 May British Airways direct

Also check the deals for return 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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