SAN → DENSan Diego to Denver

live

Direct flights from San Diego (SAN) to Denver (DEN): 28 nonstop departures observed each week across 4 airlines. 61% of the last 28 operated flights arrived within 15 minutes of schedule. The median arrival is 3 minutes late. 2 of the 28 tracked flights were cancelled. 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 San Diego and Denver. Updated 18 October 2026 at 19:58 UTC.

Today, SAN → DEN

Sun 18 Oct · local times
WN2019Southwest Airlines33 min late

The SAN board at 12:58 shows departure at 13:28 instead of 12:55, gate 102.

Landing
16:40DEN board estimate · sched 16:20
Later cancelled
0.2%of 23,898 past Southwest Airlines flights whose board showed 20 to 40 min late
Still to leave today
AS635 14:33Alaska Airlines · then WN3671 14:40, UA682 16:11
Track WN2019 →
WN3671Southwest Airlines15 min late

The SAN board at 12:58 shows departure at 14:55 instead of 14:40, gate 109.

Landing
18:11DEN board estimate · sched 18:05
Still to leave today
UA682 16:11United Airlines · then F94990 16:53, UA519 18:50
Track WN3671 →
  1. 11:00 UA2793United Airlines Left 11:00 DEN est. 14:23In the air · sched 14:32
  2. 11:25 WN1452Southwest Airlines Est. 11:32Departure not confirmed by the board DEN est. 14:46sched 14:50
  3. 12:37 UA1565United Airlines Left 12:37 DEN est. 15:51In the air · sched 16:10
  4. 12:55 WN2019Southwest Airlines Est. 13:28 +33Gate 102 DEN est. 16:40 +20sched 16:20
  5. 14:33 AS635Alaska Airlines On scheduleGate 30 DEN est. 17:53sched 18:01
  6. 14:40 WN3671Southwest Airlines Est. 14:55 +15Gate 109 DEN est. 18:11 +6sched 18:05
  7. 16:11 UA682United Airlines On scheduleGate 45 DEN 19:40scheduled
  8. 16:53 F94990Frontier Airlines On scheduleGate 119 DEN 20:24scheduled
  9. 18:50 UA519United Airlines On scheduleGate 45 DEN 22:19scheduled
  10. 20:19 AS3121Alaska Airlines On schedule DEN 23:59scheduled
  11. 20:25 WN4347Southwest Est. 21:04 +39Gate 104 DEN est. 00:19 +24sched 23:55
  12. · AS1342Alaska Airlines Departed Landed 11:13 −19
  13. · F92818Frontier Airlines Departed Landed 09:51 −7
  14. · UA2476United Airlines Departed Landed 11:52 −25
  15. · UA2829United Airlines Departed Landed 10:24 −9
  16. · WN1936Southwest Airlines Departed Landed 13:05 −10
  17. · WN2502Southwest Airlines Departed Landed 11:19 +9
  18. · WN3641Southwest Airlines Departed Landed 09:30 −10

Checked SAN board 12:58 · DEN board 13:41

SAN San Diego smooth · +10
DEN Denver smooth · +0
1,371 km · ~2h 15m est.
dep bank 06:15–21:1528x weekly
Runs mixed · 4 airlines · 28x weekly · nonstop
61% on time

of the last 28 operated SAN → DEN flights arrived within 15 minutes

Median arrival delay is +3 min. 2 of 28 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+3 minacross the last 28 operated legs
Flight time~2h 15mestimated from route distance
Weekly departures28x4 direct airlines on the leg
Cancelled7.1%recent route rate · 2 of 28

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 AirlinesAS60% on time

Flights AS1342 08:00 daily · AS635 14:33 daily · AS3121 varies daily

Frontier AirlinesF9

Flights F92818 06:25 daily · F94990 16:53 daily

Southwest AirlinesWN56% on time

Flights WN3641 06:15 daily · WN1934 07:20 Mo Th Fr · WN2502 07:55 Su · WN2048 08:20 Tu We

United AirlinesUA70% on time

Flights UA2829 07:00 daily · UA2476 08:45 daily · UA2793 11:00 daily · UA1565 12:37 daily

History

operated legs · board outcomes
10-18AS1342arrived−19
10-18F92818arrived−7
10-18UA1565dep +0 → arr−19
10-18UA2476arrived−25
10-18UA2793dep +0 → arr−9
10-18UA2829arrived−9
10-18WN1936arrived−10
10-18WN2502arrived+9
10-18WN3641arrived−10
10-17AS1342arrived−2
10-17AS3121arrived−16
10-17AS635arrived+43
10-17F92818arrived−21
10-17F94990arrived+23
10-17UA1565arrived−13
10-17UA2476cancelledCNX
10-17UA2793arrived+14
10-17UA2829arrived−4
10-17UA682arrived+41
10-17WN1737arrived+3
10-17WN1767arrived+96
10-17WN2019arrived+3
10-17WN3013arrived+27
10-17WN3641arrived+19
10-16AS3121cancelledCNX
10-16F94990arrived+259
10-16UA519arrived+111
10-16WN4492arrived+52

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
SANSan Diego +10 min smooth 🌤 clear · SSW 4 kt Full SAN delay board →
DENDenver +0 min smooth 🌤 scattered clouds · SW 6 kt Full DEN delay board →

Weather lens

Current conditions put the pressure at SAN: 55% odds of a 15+ minute delay and around +19 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the San Diego to Denver route actually runs

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

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

SAN to DEN questions

Is SAN–DEN running on time right now?

Smooth skies ahead. The departure side at SAN is the weaker end, route health score 93/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on SAN–DEN?

Operators schedule morning departures around 06:15 and evening departures around 17:45 from SAN. Earlier flights typically land before destination-airport delays accumulate later in the day; check the DEN delay card to confirm conditions when you'd arrive.

How long is the flight from SAN to DEN?

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 SAN–DEN fly?

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