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

Return flights

08 Feb - 16 Feb	KLM
16 Feb - 25 Feb	KLM
16 Feb - 26 Feb	KLM
16 Feb - 27 Feb	KLM
09 Feb - 16 Feb	KLM
11 Feb - 18 Feb	Virgin Atlantic
23 Feb - 04 Mar	United
08 Feb - 20 Feb	Delta
19 Feb - 26 Feb	KLM
19 Feb - 27 Feb	KLM
27 Feb - 10 Mar	Delta
27 Feb - 12 Mar	Delta
21 Feb - 28 Feb	Delta

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

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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Cheapest return flights from St. Louis to London in February from 515€

Return flights