AirHint found the following cheapest return flights from Washington (DCA) to San Jose (SJO) in October 2025 (see full year).

Return flights

26 Oct - 30 Oct	United
24 Oct - 27 Oct	American Airlines
23 Oct - 27 Oct	Southwest Airlines
20 Oct - 27 Oct	Southwest Airlines
03 Oct - 05 Oct	jetBlue
02 Oct - 05 Oct	jetBlue
05 Oct - 08 Oct	jetBlue
23 Oct - 26 Oct	jetBlue
21 Oct - 11 Nov	jetBlue
07 Oct - 21 Oct	jetBlue
14 Oct - 28 Oct	jetBlue
14 Oct - 04 Nov	jetBlue
15 Oct - 05 Nov	jetBlue
15 Oct - 04 Nov	jetBlue
22 Oct - 12 Nov	jetBlue

Also check the deals for one-way flights from Washington to San Jose in October.

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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Cheapest return flights from Washington to San Jose in October from $235

Return flights