AirHint found the following cheapest return flights from Washington (DCA) to Keflavik (KEF) in June 2026 (see full year).

Return flights

02 Jun - 09 Jun	Air Canada
10 Jun - 18 Jun	Air Canada
05 Jun - 08 Jun	Air Canada
05 Jun - 07 Jun	Air Canada
24 Jun - 05 Jul	Air Canada
19 Jun - 28 Jun	Air Canada
30 Jun - 06 Jul	Air Canada
17 Jun - 23 Jun	Air Canada
21 Jun - 27 Jun	United
15 Jun - 17 Jun	Air Canada
19 Jun - 30 Jun	British Airways
19 Jun - 23 Jun	British Airways

Also check the deals for one-way flights from Washington to Keflavik in June.

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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Cheapest return flights from Washington to Keflavik in June from 596€

Return flights