Cheapest return flights from Sao Paulo to Keflavik in September from $946

Best time to book flights for Sao Paulo (GRU) to Keflavik (KEF) flights at AirHint

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

Return flights

08 Sep - 15 Sep United
07 Sep - 19 Sep Air Canada
21 Sep - 01 Oct Air Canada
08 Sep - 14 Sep United
07 Sep - 14 Sep Air Canada
15 Sep - 04 Oct Air Canada
03 Sep - 14 Sep United
01 Sep - 08 Sep Air Canada
17 Sep - 27 Sep Air Canada
12 Sep - 27 Sep SWISS
20 Sep - 02 Oct KLM

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

Skyscanner

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