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

Return flights

24 Aug - 04 Sep	Virgin Atlantic
20 Aug - 27 Aug	Virgin Atlantic
26 Aug - 05 Sep	Virgin Atlantic
23 Aug - 05 Sep	Virgin Atlantic
20 Aug - 04 Sep	Delta
19 Aug - 05 Sep	Air France
18 Aug - 27 Aug	Air France
26 Aug - 04 Sep	Air France
30 Aug - 09 Sep	Virgin Atlantic
21 Aug - 28 Aug	Air France
19 Aug - 25 Aug	Delta
18 Aug - 25 Aug	Delta
22 Aug - 26 Aug	Delta
30 Aug - 16 Sep	Delta
22 Aug - 04 Sep	Delta
17 Aug - 24 Aug	Air France
19 Aug - 24 Aug	Air France
19 Aug - 30 Aug	Air France
26 Aug - 01 Sep	Air France
21 Aug - 26 Aug	Air France

Also check the deals for one-way flights from Dallas 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 Dallas to London in August from 727€

Return flights