Cheapest return flights from Sao Paulo to Keflavik in September from $944

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

Return flights

10 Sep - 16 Sep United
05 Sep - 14 Sep United
08 Sep - 14 Sep United
20 Sep - 05 Oct Air Canada
04 Sep - 09 Sep United
21 Sep - 06 Oct Air Canada
09 Sep - 18 Sep Lufthansa
07 Sep - 27 Oct SWISS
18 Sep - 21 Sep United
20 Sep - 30 Sep Lufthansa
18 Sep - 03 Oct TAP
16 Sep - 26 Sep KLM
06 Sep - 27 Oct KLM
15 Sep - 25 Sep Delta

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.

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