AirHint found the following cheapest return flights from Washington (DCA) to Keflavik (KEF) in July 2026 (see full year).
Return flights
| 06 Jul - 12 Jul | jetBlue | ||
| 14 Jul - 18 Jul | jetBlue | ||
| 02 Jul - 07 Jul | United | ||
| 10 Jul - 19 Jul | Icelandair | ||
| 31 Jul - 08 Aug | Frontier Airlines | ||
| 12 Jul - 18 Jul | British Airways |
Also check the deals for one-way flights from Washington to Keflavik in July.
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