DL2851Delta Air Lines · SEA → DEN
live · 44m ago
Route confirmed Delta Air Lines

DL2851 SeattleSEA · 20:00 DenverDEN · 23:55

DL2851 by Delta Air Lines flies from Seattle (SEA) to Denver (DEN) for the Sun, Oct 18 departure.

Right nowOn time · gate B7 · as of 19:22
20:00

departs SEA · on schedule

Typical gate push+231 minmedian posted departure
Typical arrival+237 minmedian over 2 operations

The route today

live boards
SEASeattleOn-time likelySEA delay board →
DENDenverOn-time likelyDEN delay board →
SEA→DENevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
40%Chance of 15+ min delay
2.1%Chance of cancellation
+10 minAvg hub delay right now

Conditions 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 departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Seattle to Denver flights today

same route · Delta Air Lines
DL1358departs 08:55
DL2543departs 13:39

If 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 +237 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.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
10-17SEA 20:00DEN 23:55 23:29 (−26)
10-16SEA 20:00 23:51 (+231)DEN 23:55 03:52 (+237)

Aircraft

Recent tails: N344DU, 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

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 — DL2851 Seattle to Denver on-time performance, measured from the SEA and DEN airport boards.

Canonical URL
https://proflightsearch.com/flight/DL2851
How we measure this →