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

Return flights

20 Mar - 27 Mar	Spirit Airlines
25 Mar - 01 Apr	Spirit Airlines
22 Mar - 29 Mar	Spirit Airlines
19 Mar - 26 Mar	jetBlue
26 Mar - 02 Apr	jetBlue
21 Mar - 28 Mar	Spirit Airlines
12 Mar - 21 Mar	Frontier Airlines

Also check the deals for one-way flights from Dallas-Fort Worth to Keflavik 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 Keflavik in March from 532€

Return flights