AirHint found the following cheapest one-way flights from Washington (DCA) to Keflavik (KEF) in May 2026 (see full year).
One-Way flights
| 11 May | Finnair | ||
| 18 May | Air France | ||
| 21 May | Air France | ||
| 27 May | WestJet | ||
| 23 May | Icelandair | ||
| 24 May | Icelandair | ||
| 25 May | Icelandair | ||
| 26 May | Icelandair | ||
| 22 May | Icelandair |
Also check the deals for return flights from Washington to Keflavik in May.
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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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