Cheapest return flights from Newburgh to Keflavik in September from $289

Best time to book flights for Newburgh (SWF) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Newburgh (SWF) to Keflavik (KEF) in September 2025 (see full year).

Return flights

16 Sep - 23 Sep Fly Play direct
15 Sep - 29 Sep Fly Play direct
19 Sep - 23 Sep Fly Play direct
06 Sep - 12 Sep Fly Play direct
02 Sep - 09 Sep Fly Play direct
01 Sep - 12 Sep Fly Play direct
26 Sep - 04 Oct Fly Play direct
29 Sep - 06 Oct Fly Play direct
15 Sep - 20 Sep Fly Play direct
22 Sep - 27 Sep Fly Play direct
22 Sep - 28 Sep Fly Play direct
01 Sep - 08 Sep Fly Play direct
24 Sep - 01 Oct Fly Play direct

Also check the deals for one-way flights from Newburgh to Keflavik in September.

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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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