Cheapest return DCA–KEF flights, July

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

Return flights

29 Jul - 05 Aug jetBlue
30 Jul - 06 Aug jetBlue
27 Jul - 03 Aug jetBlue
28 Jul - 04 Aug Air Canada
31 Jul - 07 Aug Air Canada
06 Jul - 16 Jul Air Canada
20 Jul - 28 Jul Air Canada
05 Jul - 14 Jul Air Canada
23 Jul - 02 Aug jetBlue
04 Jul - 14 Jul Air Canada
04 Jul - 16 Jul Air Canada
04 Jul - 09 Jul Icelandair
17 Jul - 22 Jul Air Canada
14 Jul - 27 Jul Air France
19 Jul - 27 Jul Air Canada
18 Jul - 26 Jul Delta
30 Jul - 03 Aug British Airways

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

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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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