DL1128 SeattleSEA · 05:45 Salt Lake CitySLC · 08:46
DL1128 by Delta Air Lines flies from Seattle (SEA) to Salt Lake City (SLC) for the Sun, Sep 6 departure.
arrived at SLC · 23 min early
Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −20 min · 0 cancelled · 9 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at SEA and SLC 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
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 Salt Lake City flights today
same route · Delta Air LinesIf DL1128 is cancelled, these are the other Delta Air Lines nonstop flights from Seattle to Salt Lake City 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 DL1128 actually runs
Pro Flight Search has tracked every published board update for DL1128 across the SEA and SLC boards: schedule changes, gate pushes and actual clocks. Usually lands ~18 min early. Based on 9 confirmed landings · 8/9 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how DL1128 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: N533DT, N504DZ, N516DA, N526DE.
Board clocks recorded as SEA and SLC published them.
Planning around DL1128? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — DL1128 Seattle to Salt Lake City on-time performance, measured from the SEA and SLC airport boards.
https://proflightsearch.com/flight/DL1128
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