AirHint found the following cheapest return flights from Washington (DCA) to Keflavik (KEF) in October 2026 (see full year).
Return flights
| 03 Oct - 10 Oct | jetBlue | ||
| 04 Oct - 11 Oct | jetBlue | ||
| 12 Oct - 17 Oct | Delta | ||
| 03 Oct - 07 Nov | Icelandair | ||
| 27 Oct - 10 Nov | British Airways | ||
| 17 Oct - 31 Oct | British Airways | ||
| 21 Oct - 08 Nov | British Airways |
Also check the deals for one-way flights from Washington to Keflavik in October.
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