AirHint found the following cheapest return flights from Denver (DEN) to San Jose (SJO) in March 2026 (see full year).
Return flights
| 08 Mar - 14 Mar | Copa | ||
| 08 Mar - 14 Mar | Southwest Airlines | direct | |
| 04 Mar - 08 Mar | Delta | ||
| 22 Mar - 28 Mar | United | ||
| 14 Mar - 21 Mar | Frontier Airlines |
Also check the deals for one-way flights from Denver to San Jose in March.
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