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

Return flights

17 Aug - 24 Aug	United
13 Aug - 26 Aug	Air Canada
15 Aug - 22 Aug	United
28 Aug - 01 Sep	Frontier Airlines
21 Aug - 05 Sep	Air Canada
12 Aug - 20 Aug	Delta
13 Aug - 20 Aug	United
27 Aug - 03 Sep	United
21 Aug - 28 Aug	United
07 Aug - 14 Aug	United
22 Aug - 07 Sep	Air Canada
25 Aug - 01 Sep	United
23 Aug - 30 Aug	United
11 Aug - 18 Aug	United
03 Aug - 10 Aug	United
30 Aug - 06 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 516€

Return flights