AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to London (LHR) in December 2025 (see full year).

Return flights

03 Dec - 09 Dec	Air Canada
10 Dec - 17 Dec	Air Canada
01 Dec - 08 Dec	United
11 Dec - 18 Dec	United
11 Dec - 28 Dec	Air Canada
06 Dec - 13 Dec	Scandinavian Airlines
29 Dec - 13 Jan	Air Canada
29 Dec - 07 Jan	British Airways
31 Dec - 07 Jan	British Airways
03 Dec - 09 Dec	American Airlines	direct
29 Dec - 10 Jan	Finnair
13 Dec - 14 Jan	Air Canada
23 Dec - 30 Dec	Air Canada
16 Dec - 30 Dec	Air Canada
29 Dec - 13 Jan	Iberia	direct
11 Dec - 18 Dec	British Airways	direct
29 Dec - 10 Jan	Iberia	direct
13 Dec - 14 Jan	British Airways	direct
19 Dec - 07 Jan	American Airlines
20 Dec - 01 Jan	British Airways	direct

Also check the deals for one-way flights from Dallas-Fort Worth to London in December.

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-Fort Worth to London in December from $602

Return flights