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

Return flights

25 Aug - 25 Sep	Scandinavian Airlines
25 Aug - 20 Sep	Scandinavian Airlines
31 Aug - 02 Sep	Scandinavian Airlines
31 Aug - 13 Sep	Air France
30 Aug - 12 Sep	Delta
29 Aug - 03 Sep	Scandinavian Airlines
30 Aug - 13 Sep	KLM
29 Aug - 20 Sep	Air France
30 Aug - 20 Sep	KLM
28 Aug - 07 Sep	Delta
29 Aug - 31 Aug	Air France
28 Aug - 31 Aug	Delta
24 Aug - 30 Aug	Scandinavian Airlines
26 Aug - 29 Aug	Air France
30 Aug - 31 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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Dallas to London in August from $919

Return flights