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

Return flights

26 Aug - 28 Aug	Fly Play	direct
19 Aug - 21 Aug	Fly Play	direct
18 Aug - 21 Aug	Fly Play	direct
20 Aug - 26 Aug	Fly Play	direct
20 Aug - 28 Aug	Fly Play	direct
21 Aug - 28 Aug	Fly Play	direct
19 Aug - 23 Aug	Fly Play	direct
18 Aug - 23 Aug	Fly Play	direct
28 Aug - 06 Sep	Fly Play
21 Aug - 25 Aug	Fly Play	direct
20 Aug - 25 Aug	Fly Play	direct
28 Aug - 01 Sep	Fly Play	direct
30 Aug - 01 Sep	Fly Play	direct
22 Aug - 01 Sep	Allegiant Air
29 Aug - 01 Sep	Allegiant Air

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

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Newburgh to Keflavik in August from 329€

Return flights