Cheapest return WMI–SJO flights, September

AirHint found the following cheapest return flights from Warsaw (WMI) to San Jose (SJO) in September 2026 (see full year).

Return flights

15 Sep - 28 Sep Ryanair
14 Sep - 28 Sep Ryanair
07 Sep - 13 Sep Ryanair
17 Sep - 28 Sep Ryanair
16 Sep - 27 Sep Ryanair
07 Sep - 12 Sep Ryanair
26 Sep - 01 Oct Ryanair
06 Sep - 18 Sep Ryanair
23 Sep - 30 Sep Ryanair

Also check the deals for one-way flights from Warsaw to San Jose in September.

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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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