DL1840 ChicagoORD · 19:15 Salt Lake CitySLC · 21:58
DL1840 by Delta Air Lines flies from Chicago (ORD) to Salt Lake City (SLC) for the Thu, Oct 22 departure.
arrived at SLC · 6 min early
Where the minutes go
last 4 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 ORD 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.
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 Chicago to Salt Lake City flights today
same route · Delta Air LinesIf DL1840 is cancelled, these are the other Delta Air Lines nonstop flights from Chicago to Salt Lake City on the same day, with scheduled departure times in ORD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How DL1840 actually runs
Pro Flight Search has tracked every published board update for DL1840 across the ORD and SLC boards: schedule changes, gate pushes and actual clocks. Usually lands ~11 min early. Based on 2 confirmed landings · 2/2 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how DL1840 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: N321DU, N307DU.
Board clocks recorded as ORD and SLC published them.
Planning around DL1840? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — DL1840 Chicago to Salt Lake City on-time performance, measured from the ORD and SLC airport boards.
https://proflightsearch.com/flight/DL1840
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