Cheapest return flights from Denver to San Jose in May from 357€

AirHint found the following cheapest return flights from Denver (DEN) to San Jose (SJO) in May 2026 (see full year).

Return flights

01 May - 03 May Copa
11 May - 17 May Frontier Airlines
16 May - 19 May United
15 May - 19 May United
27 May - 03 Jun United
30 May - 06 Jun Frontier Airlines
11 May - 02 Jun Frontier Airlines
22 May - 27 Jun Frontier Airlines
04 May - 29 May Frontier Airlines
18 May - 26 May Frontier Airlines
04 May - 26 May Frontier Airlines
29 May - 31 May United
31 May - 06 Jun Frontier Airlines
22 May - 27 May Frontier Airlines
22 May - 25 May Frontier Airlines
31 May - 07 Jun Southwest Airlines

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

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