DEN → SEADenver to Seattle

live

Direct flights from Denver (DEN) to Seattle (SEA): 35 nonstop departures observed each week across 5 airlines. 79% of the last 34 operated flights arrived within 15 minutes of schedule. The median arrival is 2 minutes early. No cancellations were recorded across the 34 tracked flights. The nonstop covers 1,645 km, an estimated 2 hours 37 minutes in the air. Measured by Pro Flight Search from live flight boards at Denver and Seattle. Updated 8 September 2026 at 22:38 UTC.

DEN Denver smooth · +0
SEA Seattle smooth · +0
1,645 km · ~2h 37m est.
dep bank 06:20–21:0535x weekly
Runs mixed · 5 airlines · 35x weekly · nonstop
79% on time

of the last 34 operated DEN → SEA flights arrived within 15 minutes

Median arrival delay is −2 min. 0 of 34 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−2 minacross the last 34 operated legs
Flight time~2h 37mestimated from route distance
Weekly departures35x5 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 34

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesDelta Air LinesFrontier AirlinesSouthwest 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 AirlinesAS75% on time

Flights AS317 08:22 daily · AS682 12:02 daily · AS535 15:00 daily · AS309 17:34 Mo Tu We Th Fr Su

Delta Air LinesDL100% on time

Flights DL1731 06:20 daily · DL1358 13:21 daily · DL2543 18:43 daily

Frontier AirlinesF9

Flights F94545 07:15 daily · F91175 11:05 daily

Southwest AirlinesWN43% on time

Flights WN2396 09:05 Sa · WN4462 09:05 Tu We · WN883 09:15 Mo Th Fr · WN888 11:25 Tu We Sa Su

United AirlinesUA100% on time

Flights UA2271 08:02 daily · UA2757 09:45 Mo Tu We Th Fr Su · UA2058 11:23 daily · UA464 13:55 Mo We Th Fr Su

History

operated legs · board outcomes
09-08AS317departed−1
09-08AS535dep +1 → arr−2
09-08AS682departed+21
09-08DL1358dep −4 → arr−13
09-08DL1731departed−7
09-08F91175departed−6
09-08F94545departed+20
09-08UA2013dep −3 → arr−3
09-08UA2058departed−2
09-08UA2271departed−5
09-08UA648departed−4
09-08WN4462departed+5
09-08WN888departed+4
09-07AS309departed+0
09-07AS317departed+4
09-07AS535departed+10
09-07AS615departed+47
09-07AS682departed−8
09-07DL1358departed−7
09-07DL1731departed−5
09-07DL2543departed−6
09-07F91175departed−10
09-07F94545departed−6
09-07UA2013departed−1
09-07UA2058departed−2
09-07UA2271departed−3
09-07UA2757departed−5
09-07UA360departed+8
09-07UA464departed−7
09-07WN1536departed+27
09-07WN1670departed+54
09-07WN3415departed+25
09-07WN555departed+24
09-07WN883departed+1

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 +0 min smooth Full DEN delay board →
SEASeattle +0 min smooth Full SEA delay board →

Weather lens

Current conditions put the pressure at DEN: 40% odds of a 15+ minute delay, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Denver to Seattle route actually runs

Pro Flight Search records official board updates for nonstop DEN to SEA 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 Seattle (SEA) route reliability, measured from operated flights on official airport boards.

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

DEN to SEA questions

Is DEN–SEA 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–SEA?

Operators schedule morning departures around 06:20 and evening departures around 17:34 from DEN. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SEA delay card to confirm conditions when you'd arrive.

How long is the flight from DEN to SEA?

Great-circle distance is 1,645 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 146–171 min gate-to-gate on this route.

How often does DEN–SEA fly?

5 carriers operate this route, around 144 flights a week between them. Compare carrier days and times in the airline list above.