AirHint found the following cheapest return flights from San Antonio (SAT) to London (LHR) in August 2025 (see full year).

Return flights

24 Aug - 09 Sep	British Airways
22 Aug - 19 Sep	British Airways
21 Aug - 19 Sep	British Airways
21 Aug - 17 Sep	British Airways
22 Aug - 27 Aug	British Airways
21 Aug - 20 Sep	British Airways
30 Aug - 11 Sep	Virgin Atlantic
19 Aug - 26 Aug	Virgin Atlantic
20 Aug - 10 Sep	KLM
19 Aug - 19 Sep	Air France
20 Aug - 19 Sep	KLM
18 Aug - 02 Sep	Delta
24 Aug - 28 Aug	KLM
23 Aug - 28 Aug	Delta
23 Aug - 27 Aug	Delta

Also check the deals for one-way flights from San Antonio to London in August.

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 San Antonio to London in August from 452€

Return flights