AirHint found the following cheapest return flights from San Francisco (SFO) to Denver (DEN) in August 2026 (see full year).
Return flights
| 13 Aug - 16 Aug | Sun Country Airlines | ||
| 23 Aug - 30 Aug | Alaska Airlines | ||
| 13 Aug - 16 Aug | United | direct | |
| 23 Aug - 30 Aug | United | direct | |
| 06 Aug - 09 Aug | Alaska Airlines |
Also check the deals for one-way flights from San Francisco to Denver in August.
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