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

Return flights

09 Aug - 09 Sep	Spirit Airlines
26 Aug - 29 Aug	Spirit Airlines
20 Aug - 27 Aug	United
22 Aug - 29 Aug	United
16 Aug - 23 Aug	United
18 Aug - 25 Aug	United
12 Aug - 20 Aug	Delta
05 Aug - 12 Aug	Spirit Airlines
11 Aug - 15 Aug	Frontier Airlines
24 Aug - 31 Aug	United
10 Aug - 14 Aug	Spirit Airlines
26 Aug - 02 Sep	United
30 Aug - 06 Sep	United
28 Aug - 01 Sep	Lufthansa
28 Aug - 04 Sep	United

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

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 August from 689CAD

Return flights