AirHint found the following cheapest return flights from Warsaw (WAW) to San Jose (SJO) in September 2026 (see full year).
Return flights
| 24 Sep - 09 Oct | Lufthansa | ||
| 14 Sep - 25 Sep | KLM | ||
| 13 Sep - 27 Sep | Air France | ||
| 13 Sep - 28 Sep | Air France | ||
| 14 Sep - 28 Sep | KLM | ||
| 01 Sep - 15 Sep | Air France | ||
| 15 Sep - 28 Sep | KLM |
Also check the deals for one-way flights from Warsaw to San Jose in September.
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