AirHint found the following cheapest return flights from San Diego (SAN) to Denver (DEN) in June 2026 (see full year).
Return flights
| 11 Jun - 14 Jun | United | direct | |
| 08 Jun - 11 Jun | United | direct | |
| 29 Jun - 05 Jul | United | direct | |
| 24 Jun - 28 Jun | Alaska Airlines | direct | |
| 05 Jun - 10 Jun | Alaska Airlines | direct | |
| 23 Jun - 30 Jun | United | direct |
Also check the deals for one-way flights from San Diego to Denver in June.
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