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Cheapest return flights from St. Louis (STL) to London (LHR), July

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Dates, airline, and price
Dates	Airline	Price
27 Jul 10 Aug	Southern Airways Express
28 Jul 11 Aug	Frontier Airlines
30 Jul 03 Aug	Southern Airways Express
28 Jul 07 Aug	Finnair
28 Jul 07 Aug	American Airlines Direct Flight
28 Jul 11 Aug	British Airways Direct Flight
22 Jul 26 Jul	Delta
22 Jul 26 Jul	American Airlines Direct Flight

deals for one-way flights from St. Louis to London in July.

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Updated Jul 21, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest return flights from St. Louis (STL) to London (LHR), July

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