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

Return flights

14 Aug - 21 Aug	Icelandair	direct
07 Aug - 12 Aug	Icelandair	direct
24 Aug - 31 Aug	Icelandair	direct
24 Aug - 28 Aug	Icelandair	direct
07 Aug - 14 Aug	Icelandair	direct
06 Aug - 13 Aug	Air Canada
10 Aug - 15 Aug	Icelandair	direct
14 Aug - 19 Aug	Icelandair	direct
09 Aug - 16 Aug	Air Canada

Also check the deals for one-way flights from Pittsburgh 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 Pittsburgh to Keflavik in August from $312

Return flights