We spotted nonstop flights from Denver (DEN) to San Diego on United for just $56 USD round-trip.
If San Diego has been on your list, this is one of the better deals we've seen on this route.
Deal details
- Route: Denver (DEN) → San Diego
- Price: $56 USD round-trip
- Airline: United
- Stops: Nonstop
Prices are accurate as of March 18, 2026. Fares can change quickly — book soon if this looks good.
