DEN → SANDenver to San Diego

live

Direct flights from Denver (DEN) to San Diego (SAN): 28 nonstop departures observed each week across 4 airlines. 67% of the last 33 operated flights arrived within 15 minutes of schedule. The median arrival is on schedule. No cancellations were recorded across the 33 tracked flights. The nonstop covers 1,371 km, an estimated 2 hours 15 minutes in the air. Measured by Pro Flight Search from live flight boards at Denver and San Diego. Updated 21 October 2026 at 02:41 UTC.

Today, DEN → SAN

Tue 20 Oct · local times
  1. 06:35 WN4121Southwest Airlines Left 06:33 ·
  2. 07:43 UA2309United Airlines Left 07:34 ·
  3. 08:45 WN1754Southwest Airlines Left 08:45 ·
  4. 09:45 AS3120Alaska Airlines Left 09:38 ·
  5. 10:15 WN1756Southwest Airlines Left 10:15 ·
  6. 11:29 UA1940United Airlines Left 11:21 ·
  7. 12:31 AS1342Alaska Airlines Left 12:16 ·
  8. 13:25 UA1302United Airlines Left 13:23 ·
  9. 14:25 WN3347Southwest Airlines Left 14:30 +5 ·
  10. 14:29 F92817Frontier Airlines Left 14:19 ·
  11. 15:40 UA1281United Airlines Left 15:36 ·
  12. 16:05 WN1359Southwest Airlines Left 16:07 ·
  13. 18:59 AS636Alaska Airlines Left 19:02 SAN est. 20:23In the air · sched 20:34
  14. 19:10 UA540United Airlines Left 19:07 SAN est. 20:25In the air · sched 20:39
  15. 20:25 WN3408Southwest On scheduleGate C51 SAN est. 21:50sched 22:05
  16. 22:29 F92711Frontier On scheduleGate A76 SAN 23:56scheduled

Checked DEN board 20:12 · SAN board 19:41

DEN Denver smooth · +2
SAN San Diego smooth · +0
1,371 km · ~2h 15m est.
dep bank 06:35–22:2928x weekly
Runs mixed · 4 airlines · 28x weekly · nonstop
67% on time

of the last 33 operated DEN → SAN flights arrived within 15 minutes

Median arrival delay is +0 min. 0 of 33 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+0 minacross the last 33 operated legs
Flight time~2h 15mestimated from route distance
Weekly departures28x4 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 33

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesFrontier AirlinesSouthwest AirlinesUnited Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Alaska AirlinesAS67% on time

Flights AS3120 09:45 daily · AS1342 12:31 daily · AS636 18:59 daily

Frontier AirlinesF9

Flights F92817 varies daily · F92711 22:29 daily

Southwest AirlinesWN54% on time

Flights WN4121 06:35 Tu We · WN2391 06:40 Sa · WN1753 07:35 Mo Th Fr Su · WN1754 varies Mo Tu We Th Fr Su

United AirlinesUA82% on time

Flights UA2309 07:43 daily · UA1940 11:29 daily · UA1302 13:25 daily · UA1281 15:40 daily

History

operated legs · board outcomes
10-20AS1342departed−15
10-20AS3120departed−7
10-20AS636dep +3 → arr−11
10-20F92817departed−10
10-20UA1281departed−4
10-20UA1302departed−2
10-20UA1940departed−8
10-20UA2309departed−9
10-20UA540dep −3 → arr−14
10-20WN1359departed+2
10-20WN1754departed+0
10-20WN1756departed+0
10-20WN3347departed+5
10-20WN4121departed−2
10-19AS1342departed+0
10-19AS3120departed+57
10-19AS636departed+23
10-19F92711departed+78
10-19F92817departed−4
10-19UA1281departed−2
10-19UA1302departed+18
10-19UA1940departed+13
10-19UA2309departed−6
10-19UA2395departed−1
10-19UA540departed+78
10-19WN1133departed+93
10-19WN1753departed−2
10-19WN1754departed+47
10-19WN1755departed+78
10-19WN1771departed+89
10-19WN3408departed+27
10-19WN4263departed+48
10-19WN8505departed+3

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
DENDenver +2 min smooth 🌤 few clouds · SE 4 kt Full DEN delay board →
SANSan Diego +0 min smooth 🌤 scattered clouds · N 0 kt Full SAN delay board →

Weather lens

Current conditions put the pressure at SAN: 56% odds of a 15+ minute delay and around +20 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Denver to San Diego route actually runs

Pro Flight Search records official board updates for nonstop DEN to SAN flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Denver (DEN) to San Diego (SAN) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/DEN-SAN
How we measure this →

DEN to SAN questions

Is DEN–SAN running on time right now?

Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on DEN–SAN?

Operators schedule morning departures around 06:35 and evening departures around 18:10 from DEN. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SAN delay card to confirm conditions when you'd arrive.

How long is the flight from DEN to SAN?

Great-circle distance is 1,371 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 127–148 min gate-to-gate on this route.

How often does DEN–SAN fly?

4 carriers operate this route, around 120 flights a week between them. Compare carrier days and times in the airline list above.