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

Return flights

26 Aug - 28 Aug	American Airlines
28 Aug - 30 Aug	American Airlines
26 Aug - 30 Aug	American Airlines
22 Aug - 30 Aug	American Airlines
30 Aug - 06 Sep	Southwest Airlines
22 Aug - 29 Aug	Lufthansa
21 Aug - 25 Aug	American Airlines
24 Aug - 30 Aug	American Airlines
19 Aug - 22 Aug	American Airlines
22 Aug - 25 Aug	American Airlines
27 Aug - 02 Sep	American Airlines
24 Aug - 25 Aug	American Airlines
28 Aug - 02 Sep	American Airlines
28 Aug - 01 Sep	jetBlue
29 Aug - 01 Sep	jetBlue
24 Aug - 01 Sep	American Airlines

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

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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from Washington to San Jose in August from $261

Return flights