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

Return flights

13 Oct - 23 Oct	Air France
19 Oct - 28 Oct	KLM
27 Oct - 04 Nov	Air France
01 Oct - 07 Oct	Delta
28 Oct - 04 Nov	Air France
28 Oct - 07 Nov	Air France
14 Oct - 21 Oct	Delta
15 Oct - 23 Oct	KLM
03 Oct - 07 Oct	Delta
16 Oct - 22 Oct	Delta
16 Oct - 21 Oct	Delta
17 Oct - 21 Oct	Delta
21 Oct - 28 Oct	Scandinavian Airlines
11 Oct - 01 Nov	Scandinavian Airlines
31 Oct - 02 Nov	Delta
27 Oct - 03 Nov	Scandinavian Airlines

Also check the deals for one-way flights from Dallas to London in October.

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 October from $641

Return flights