AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to London (LGW) in March 2026 (see full year).

Return flights

09 Mar - 16 Mar	Air Canada
02 Mar - 12 Mar	Spirit Airlines
01 Mar - 12 Mar	Finnair
03 Mar - 11 Mar	Finnair
04 Mar - 11 Mar	Spirit Airlines
31 Mar - 10 Apr	Spirit Airlines
01 Mar - 08 Mar	Spirit Airlines
29 Mar - 27 Apr	Spirit Airlines
17 Mar - 24 Mar	Air Canada
05 Mar - 12 Mar	Spirit Airlines
03 Mar - 10 Mar	Spirit Airlines
02 Mar - 10 Mar	Spirit Airlines
29 Mar - 13 Apr	Spirit Airlines
30 Mar - 11 Apr	Frontier Airlines
27 Mar - 03 Apr	Spirit Airlines
28 Mar - 03 Apr	Spirit Airlines
10 Mar - 14 Apr	Lufthansa
04 Mar - 03 Apr	Spirit Airlines
29 Mar - 04 Apr	Spirit Airlines
17 Mar - 04 Apr	Frontier Airlines

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

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 March from $536

Return flights