San Diego to Denver nonstop
Yes: Southwest, United, Alaska, Frontier and SkyWest fly direct from San Diego (SAN) to Denver (DEN) about 17 times a day, year-round.
Hotel bookings pay us a small commission; the flight search doesn't.
San Diego to Denver in numbers
Measured from US DOT filings, not estimated from distance.
- Distance and flight time
- 853 miles nonstop, about 2 hr 15 min gate to gate. Flight time is an estimate from the great-circle distance; the filings carry distance, not scheduled elapsed time.
- Seasonality
- Flew every month of the last year: busiest in June 2026 (122 flights a week), quietest in September 2025 (95 flights a week).
- Sep 2025: 95 flights a week
- Oct 2025: 119 flights a week
- Nov 2025: 120 flights a week
- Dec 2025: 120 flights a week
- Jan 2026: 112 flights a week
- Feb 2026: 115 flights a week
- Mar 2026: 120 flights a week
- Apr 2026: 118 flights a week
- May 2026: 116 flights a week
- Jun 2026: 122 flights a week
- Jul 2026: 122 flights a week
- Aug 2026: 119 flights a week
Flights a week by month, Sep 2025 to Aug 2026, from US DOT on-time filings. - Who operates the flights
- Southwest 39%, United 34%, Alaska 11%, Frontier 11%, SkyWest 5% (regional operator) of departures, counted across the August 2026 and February 2026 US DOT on-time filings.
- Fares
- Half of the 8,681 tickets in the US DOT fare survey for Q2 2025 sold between $100 and $225 one way, median $150. The survey runs a couple of quarters behind, so read it as the shape of the route's pricing rather than today's quote.
- Jul to Sep (Q3 2024): median $150 one way, middle half $100 to $225, 10,470 tickets
- Oct to Dec (Q4 2024): median $150 one way, middle half $100 to $225, 9,126 tickets
- Jan to Mar (Q1 2025): median $150 one way, middle half $100 to $225, 7,848 tickets
- Apr to Jun (Q2 2025): median $150 one way, middle half $100 to $225, 8,681 tickets
Fares held steady through the year: a median of $150 one way in every quarter of the DOT ticket survey (Q3 2024 to Q2 2025). Bars show the middle half of one-way fares; the mark is the median.
Flying the other way? Denver to San Diego nonstop.
Other airports near San Diego with nonstops to Denver
Within about 100 miles of San Diego International Airport
Also nonstop from San Diego (SAN)
Busiest other routes out of the same airport
- San Francisco (SFO) about 22 times a day
- Phoenix (PHX) about 17 times a day
- Seattle (SEA) about 15 times a day
- San Jose (SJC) about 15 times a day
- Sacramento (SMF) about 14 times a day
- Chicago (ORD) about 13 times a day
- Las Vegas (LAS) about 12 times a day
- Oakland (OAK) about 12 times a day
Staying in Denver?
Sort out where you'll sleep and what you'll do once you land.
Exploring Denver on foot? Take the free GPS audio walking tour
Nonstop Scout earns a commission on bookings made through these links, at no extra cost to you. It does not change which routes or fares we show.
Ready to compare fares?
Nonstop Scout earns a commission on hotel and activity bookings made through the links above. The flight search link pays us nothing; it's here because it's the best one.
Take every nonstop with you. Get the free Nonstop Scout app for iPhone.
