Cheapest return flights from Seattle to Keflavik in July from 407€

AirHint found the following cheapest return flights from Seattle (SEA) to Keflavik (KEF) in July 2025 (see full year).

Return flights

07 Jul - 24 Jul Icelandair direct
08 Jul - 15 Jul Icelandair direct
10 Jul - 17 Jul Icelandair direct
12 Jul - 19 Jul Icelandair direct
14 Jul - 21 Jul Icelandair direct
15 Jul - 22 Jul Icelandair direct
16 Jul - 23 Jul Icelandair direct
17 Jul - 24 Jul Icelandair direct
18 Jul - 25 Jul Icelandair direct
24 Jul - 31 Jul Icelandair direct
24 Jul - 17 Aug Icelandair direct
28 Jul - 11 Aug Icelandair direct
25 Jul - 01 Aug Icelandair direct

Also check the deals for one-way flights from Seattle 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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