DL2851 SeattleSEA · 20:07 DenverDEN · 23:58
DL2851 by Delta Air Lines flies from Seattle (SEA) to Denver (DEN) for the Mon, Sep 7 departure.
estimated arrival at DEN · local time · ~32 min from now
position updated 6m ago · checking again in 90s
Live position · flown path, last 1h 44m
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SEA and DEN are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Seattle to Denver flights today
same route · Delta Air LinesIf DL2851 is cancelled, these are the other Delta Air Lines nonstop flights from Seattle to Denver on the same day, with scheduled departure times in SEA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How DL2851 actually runs
Pro Flight Search has tracked every published board update for DL2851 across the SEA and DEN boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed +22 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how DL2851 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N337DU, N328DU.
Board clocks recorded as SEA and DEN published them.
Planning around DL2851? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — DL2851 Seattle to Denver on-time performance, measured from the SEA and DEN airport boards.
https://proflightsearch.com/flight/DL2851
.