Cheapest return RDU–SJO flights, May

AirHint found the following cheapest return flights from Raleigh-durham (RDU) to San Jose (SJO) in May 2026 (see full year).

Return flights

11 May - 01 Jun Copa
17 May - 22 May Copa
06 May - 10 May Copa
06 May - 12 May United
31 May - 04 Jun Copa
25 May - 28 May Frontier Airlines
22 May - 29 May Frontier Airlines
15 May - 19 May Copa
08 May - 13 May Copa
07 May - 10 May Copa
16 May - 17 May Frontier Airlines

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

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