Cheapest return flights from Washington to Keflavik in August from $539

Best time to book flights for Washington (DCA) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Washington (DCA) to Keflavik (KEF) in August 2025 (see full year).

Return flights

18 Aug - 31 Aug Air Canada
07 Aug - 17 Aug Air Canada
29 Aug - 05 Sep Air Canada
28 Aug - 02 Sep Air Canada
28 Aug - 01 Sep Air Canada
01 Aug - 07 Aug Air Canada
19 Aug - 22 Aug Air Canada
09 Aug - 15 Aug Air Canada
10 Aug - 16 Aug Air Canada
13 Aug - 27 Aug Icelandair
06 Aug - 10 Aug Icelandair
12 Aug - 25 Aug British Airways
14 Aug - 27 Aug British Airways

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

Skyscanner

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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