AirHint found the following cheapest return flights from Raleigh-durham (RDU) to San Jose (SJO) in August 2025 (see full year).

Return flights

12 Aug - 26 Aug	Frontier Airlines
29 Aug - 02 Sep	American Airlines
05 Aug - 12 Aug	Frontier Airlines
10 Aug - 15 Aug	Spirit Airlines
09 Aug - 15 Aug	Spirit Airlines
05 Aug - 11 Aug	Frontier Airlines
01 Aug - 05 Aug	Frontier Airlines
10 Aug - 16 Aug	United

Also check the deals for one-way flights from Raleigh-durham 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.

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Cheapest return flights from Raleigh-durham to San Jose in August from 257€

Return flights