Cheapest return flights from Boston to Keflavik in July from $344

Best time to book flights for Boston (BOS) to Keflavik (KEF) flights at AirHint

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

Return flights

22 Jul - 29 Jul Fly Play direct
31 Jul - 04 Aug Fly Play direct
28 Jul - 04 Aug Fly Play direct
20 Jul - 24 Jul Fly Play direct
10 Jul - 17 Jul Fly Play direct
31 Jul - 07 Aug Fly Play direct
29 Jul - 08 Aug Fly Play direct
04 Jul - 07 Jul Fly Play direct
14 Jul - 22 Jul Fly Play direct
08 Jul - 14 Jul Fly Play direct
04 Jul - 08 Jul Fly Play direct
09 Jul - 16 Jul Fly Play direct
11 Jul - 18 Jul Fly Play direct
20 Jul - 25 Jul Fly Play direct
30 Jul - 06 Aug Fly Play direct
25 Jul - 01 Aug Fly Play direct
27 Jul - 03 Aug Icelandair direct

Also check the deals for one-way flights from Boston 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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