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

Return flights

02 Dec - 19 Dec	Frontier Airlines
08 Dec - 14 Dec	United
03 Dec - 19 Dec	Frontier Airlines
17 Dec - 24 Dec	Frontier Airlines
03 Dec - 10 Dec	American Airlines
11 Dec - 23 Dec	Southwest Airlines
03 Dec - 08 Dec	American Airlines
03 Dec - 07 Dec	American Airlines
17 Dec - 27 Dec	Frontier Airlines
12 Dec - 22 Dec	American Airlines
25 Dec - 11 Jan	Frontier Airlines
16 Dec - 02 Jan	Frontier Airlines
24 Dec - 04 Jan	Frontier Airlines

Also check the deals for one-way flights from Raleigh-durham to San Jose in December.

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 Raleigh-durham to San Jose in December from $284

Return flights