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

Return flights

01 Dec - 08 Dec	Finnair
03 Dec - 08 Dec	Finnair
01 Dec - 13 Jan	Finnair
02 Dec - 13 Jan	Finnair
09 Dec - 16 Dec	Air Canada
10 Dec - 17 Dec	Air Canada
09 Dec - 17 Dec	Iberia	direct
09 Dec - 16 Dec	American Airlines	direct
01 Dec - 13 Jan	American Airlines	direct
02 Dec - 13 Jan	American Airlines	direct
31 Dec - 09 Jan	American Airlines
04 Dec - 08 Dec	Finnair
10 Dec - 17 Dec	Iberia	direct
29 Dec - 24 Jan	Finnair
08 Dec - 08 Jan	Air Canada
31 Dec - 09 Jan	British Airways	direct
01 Dec - 08 Dec	British Airways	direct
03 Dec - 08 Dec	British Airways	direct
24 Dec - 13 Jan	Finnair
29 Dec - 06 Jan	Finnair

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 $484

Return flights