Cheapest return flights from Dallas-Fort Worth to Keflavik in May from $518

Best time to book flights for Dallas-Fort Worth (DFW) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Keflavik (KEF) in May 2025 (see full year).

Return flights

09 May - 22 May Spirit Airlines
06 May - 13 May Spirit Airlines
11 May - 15 May Frontier Airlines
15 May - 18 May Spirit Airlines
09 May - 11 May Spirit Airlines
27 May - 06 Jun Frontier Airlines
22 May - 28 May Spirit Airlines
26 May - 29 May Spirit Airlines
27 May - 03 Jun United
25 May - 01 Jun United
29 May - 05 Jun United
31 May - 07 Jun United
23 May - 30 May United
21 May - 28 May United
19 May - 26 May United

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

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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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