Cheapest return flights from Washington to Keflavik in October from $516

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

Return flights

22 Oct - 15 Nov Scandinavian Airlines
24 Oct - 15 Nov Scandinavian Airlines
21 Oct - 15 Nov Scandinavian Airlines
15 Oct - 08 Nov Scandinavian Airlines
18 Oct - 20 Oct Scandinavian Airlines
13 Oct - 08 Nov Scandinavian Airlines
02 Oct - 06 Oct Air France
02 Oct - 07 Oct Delta
18 Oct - 08 Nov Scandinavian Airlines
03 Oct - 05 Oct Scandinavian Airlines
30 Oct - 03 Nov jetBlue
31 Oct - 22 Nov jetBlue
22 Oct - 26 Oct Scandinavian Airlines
14 Oct - 21 Oct jetBlue
12 Oct - 01 Nov jetBlue
15 Oct - 22 Oct jetBlue
19 Oct - 22 Oct Scandinavian Airlines
10 Oct - 14 Oct Scandinavian Airlines
31 Oct - 09 Nov jetBlue
13 Oct - 22 Oct Scandinavian Airlines

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

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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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