Cheapest return flights from Washington to Keflavik in March from $579

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

Return flights

11 Mar - 18 Mar jetBlue
11 Mar - 16 Mar Scandinavian Airlines
19 Mar - 23 Mar Scandinavian Airlines
09 Mar - 16 Mar Scandinavian Airlines
09 Mar - 17 Mar Scandinavian Airlines
17 Mar - 22 Mar Scandinavian Airlines
18 Mar - 22 Mar Scandinavian Airlines
19 Mar - 24 Mar Scandinavian Airlines
03 Mar - 10 Mar Scandinavian Airlines
01 Mar - 12 Mar jetBlue
31 Mar - 05 Apr jetBlue
31 Mar - 07 Apr Air France
29 Mar - 03 Apr jetBlue
28 Mar - 01 Apr jetBlue
27 Mar - 04 Apr jetBlue
25 Mar - 02 Apr Air Canada
28 Mar - 03 Apr jetBlue
28 Mar - 04 Apr jetBlue
31 Mar - 04 Apr jetBlue
30 Mar - 03 Apr Icelandair

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

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