Cheapest return flights from Boston to Keflavik in July from $271

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

Return flights

05 Jul - 15 Jul Fly Play direct
08 Jul - 15 Jul Fly Play direct
12 Jul - 15 Jul Fly Play direct
10 Jul - 15 Jul Fly Play direct
10 Jul - 16 Jul Fly Play direct
17 Jul - 19 Jul Fly Play direct
12 Jul - 19 Jul Fly Play direct
30 Jul - 03 Aug Fly Play direct
14 Jul - 19 Jul Fly Play direct
21 Jul - 28 Jul Fly Play direct
07 Jul - 16 Jul Fly Play direct
30 Jul - 10 Aug Fly Play direct
29 Jul - 06 Aug SWISS
30 Jul - 06 Aug United
31 Jul - 06 Aug Air Canada
25 Jul - 02 Aug Air Canada
13 Jul - 13 Aug Air Canada
28 Jul - 04 Aug United
20 Jul - 03 Aug Air Canada
05 Jul - 06 Aug SWISS

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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