Cheapest return DCA–KEF flights, August

AirHint found the following cheapest return flights from Washington (DCA) to Keflavik (KEF) in August 2026 (see full year).

Return flights

24 Aug - 31 Aug jetBlue
25 Aug - 01 Sep jetBlue
26 Aug - 31 Aug Air Canada
30 Aug - 13 Sep Icelandair
21 Aug - 31 Aug Air Canada
27 Aug - 30 Aug Air Canada
03 Aug - 10 Aug Air Canada
02 Aug - 09 Aug Air Canada
01 Aug - 08 Aug United
04 Aug - 11 Aug Air Canada
21 Aug - 22 Aug Air Canada
07 Aug - 16 Aug Frontier Airlines

Also check the deals for one-way flights from Washington to Keflavik in August.

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