Cheapest return flights from Athens to San Jose in September from $665

AirHint found the following cheapest return flights from Athens (ATH) to San Jose (SJO) in September 2025 (see full year).

Return flights

25 Sep - 06 Oct Air Canada
25 Sep - 05 Oct Air Canada
12 Sep - 23 Sep United
26 Sep - 06 Oct Air Canada
26 Sep - 05 Oct Air Canada
13 Sep - 20 Sep Air Canada
25 Sep - 04 Oct KLM
01 Sep - 07 Sep KLM
01 Sep - 12 Sep KLM
22 Sep - 26 Sep Iberia

Also check the deals for one-way flights from Athens to San Jose 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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