AirHint found the following cheapest return flights from Denver (DEN) to San Jose (SJO) in April 2026 (see full year).
Return flights
| 07 Apr - 16 Apr | United | ||
| 07 Apr - 15 Apr | Southwest Airlines | ||
| 22 Apr - 27 Apr | American Airlines | ||
| 16 Apr - 17 Apr | Avianca | ||
| 17 Apr - 18 Apr | Avianca |
Also check the deals for one-way flights from Denver to San Jose in April.
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