Cheap flights from Denver to San Diego (DEN–SAN)
DENDenver International Airport
United States
United States
SANSan Diego International Airport
United States
United States
Alaska Airlines, Frontier Airlines, Southwest Airlines and United Airlines fly Denver to San Diego (DEN–SAN) nonstop and back, a great-circle distance of 1,370 km (852 mi).
- From
- DEN
- Denver
- To
- SAN
- San Diego
- Nonstop
- Yes · 4 airlines
- Airlines
- AS · F9 · WN · UA
- Cheapest fare found
- $106 one-way
- Distance
- 1,370 km (852 mi)
- Time difference
- San Diego 1 hour behind
- Most flights
- Southwest Airlines
- Time in the air
- 1h 56m · 1h 48m back
- On time (Touchdown Index)
- 75.2%
- Flights a week
- AS ~14 · F9 ~13 · WN ~41 · UA ~34
- Aircraft seen
- Airbus A321neo · Boeing 737 Max 8 · Boeing 737-900
Network data imported from airport and airline sources:· How we verify
Denver to San Diego fares by month
Cheapest one-way fare found: $106 for October 2026 on Frontier Airlines, nonstop. Nonstop from $106.
- Oct ’26$106
Cheapest one-way fares per month of departure in the Aviasales price cache, found . Fares change by the hour: the live fare is shown when you search.
Denver to San Diego: frequently asked questions
Fares: Aviasales price cache, 8 October 2026; tracked flights between 6 September and 3 October 2026, from public ADS-B data.
How much is a flight from Denver (DEN) to San Diego (SAN)?
From $106 one-way, the cheapest fare found for October 2026 on Frontier Airlines, nonstop; nonstop from $106 (found 8 October 2026).
How long is the DEN–SAN flight?
1h 56m wheels-up to wheels-down, the median of 416 tracked flights; SAN–DEN took 1h 48m.
Which airlines fly DEN–SAN direct?
Alaska Airlines, Frontier Airlines, Southwest Airlines and United Airlines.
What is the time difference between Denver and San Diego?
San Diego is 1 hour behind Denver: a DEN departure at noon is 11:00 local time in SAN.
Is DEN–SAN usually on time?
75.2% of 730 DEN–SAN flights landed within 15 minutes of their usual time; 5.5% were over an hour late.
How many DEN–SAN flights a week?
Alaska Airlines 14, Frontier Airlines 13, Southwest Airlines 41 and United Airlines 34 each way.
What aircraft fly DEN–SAN?
Airbus A321neo, Boeing 737 Max 8 and Boeing 737-900.
San Diego to Denver: the return flight (SAN–DEN)
All 4 airlines also fly SAN–DEN nonstop.
The return takes 1h 48m in the air (median of 401 tracked flights).
Airlines flying DEN–SAN nonstop
| Airline | Usually takes off (DEN time) | Type | Alliance | Notes |
|---|---|---|---|---|
 Alaska Airlines AS | 06:23–14:21 | full-service | oneworld | — |
 Frontier Airlines F9 | 07:46–22:54 | low-cost | — | — |
 Southwest Airlines WN | 08:35–21:33 | low-cost | — | — |
| United Airlines UA | 07:55–21:13 | full-service | Star Alliance | — |
One-stop alternatives to flying DEN–SAN nonstop
One airline on both legs; check it's sold as one ticket.
- Via Las Vegas (LAS) with Frontier Airlines and Southwest Airlines: 1,430 km (886 mi) flown, 4% further than nonstop.
- Via Colorado Springs (COS) with Southwest Airlines: 1,430 km (888 mi) flown, 4% further than nonstop.
- Via Phoenix (PHX) with
American Airlines, Frontier Airlines and Southwest Airlines: 1,460 km (905 mi) flown, 6% further than nonstop. - Via Albuquerque (ABQ) with Southwest Airlines: 1,570 km (977 mi) flown, 15% further than nonstop.
- Via Tucson (TUS) with Southwest Airlines: 1,620 km (1,010 mi) flown, 18% further than nonstop.
DEN–SAN route map
More from Denver and San Diego
Other arrivals in United States
Also nonstop from DEN, nearest to SAN first (straight-line distance):
- DEN–SNA: Santa Ana · 122 km (76 mi) from SAN
- Palm Springs (PSP) airport guide · 137 km (85 mi) from SAN
- Long Beach (LGB) · 150 km (93 mi) from SAN
- DEN–ONT: Ontario · 152 km (94 mi) from SAN
- DEN–LAX: Los Angeles · 176 km (109 mi) from SAN
Explore the airlines’ route maps
Departure
Denver International Airport
Denver (DEN), Denver. In our data, 23 airlines fly nonstop from DEN to 165 destinations.
View DEN airport guide →Arrival
San Diego International Airport
San Diego (SAN), San Diego.
Onward from San Diego
Places you can't fly to nonstop from DEN, but can from SAN — for a stopover or a second leg.
Related routes
Sources
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
Flight tracking: adsb.lol community ADS-B data (CC0), 6 September – 3 October 2026. Times are median wheels-up to wheels-down; add taxiing for gate-to-gate.
Report a change — seen something different at the airport or on the airline's site? We re-check and log corrections publicly.