AirHint found the following cheapest return flights from Washington (DCA) to Keflavik (KEF) in July 2026 (see full year).
Return flights
| 15 Jul - 20 Jul | Air Canada | ||
| 21 Jul - 27 Jul | Air Canada | ||
| 05 Jul - 18 Jul | Air Canada | ||
| 07 Jul - 28 Jul | United | ||
| 09 Jul - 16 Jul | British Airways | ||
| 04 Jul - 08 Jul | British Airways |
Also check the deals for one-way flights from Washington to Keflavik in July.
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