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

Return flights

12 Dec - 14 Dec	Frontier Airlines
05 Dec - 07 Dec	Frontier Airlines
04 Dec - 09 Dec	Frontier Airlines
06 Dec - 13 Dec	Turkish Airlines
18 Dec - 29 Dec	Frontier Airlines
23 Dec - 31 Dec	Sun Country Airlines
05 Dec - 19 Dec	Air Canada
29 Dec - 13 Jan	Air Canada
29 Dec - 10 Jan	Air Canada
29 Dec - 12 Jan	Air Canada
22 Dec - 29 Dec	Air Canada
23 Dec - 30 Dec	Sun Country Airlines
16 Dec - 23 Dec	Iberia
21 Dec - 03 Jan	Air Canada
19 Dec - 02 Jan	Air Canada
13 Dec - 14 Jan	Turkish Airlines
19 Dec - 07 Jan	Air Canada
20 Dec - 01 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 $711

Return flights