AirHint found the following cheapest return flights from Washington (DCA) to Keflavik (KEF) in August 2026 (see full year).
Return flights
| 04 Aug - 13 Aug | United | ||
| 11 Aug - 13 Aug | United | ||
| 14 Aug - 17 Aug | British Airways | ||
| 03 Aug - 12 Aug | British Airways | ||
| 07 Aug - 15 Aug | United |
Also check the deals for one-way flights from Washington to Keflavik in August.
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