DL4040 MinneapolisMSP · 19:50 LouisvilleSDF · 22:51
DL4040 by Delta Air Lines flies from Minneapolis (MSP) to Louisville (SDF) for the Tue, Oct 27 departure.
departs MSP · on schedule
board checked 14m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at MSP and SDF 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 Minneapolis to Louisville flights today
same route · Delta Air LinesIf DL4040 is cancelled, these are the other Delta Air Lines nonstop flights from Minneapolis to Louisville on the same day, with scheduled departure times in MSP local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How DL4040 actually runs
Pro Flight Search has tracked every published board update for DL4040 across the MSP and SDF boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed +11 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how DL4040 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: N162PQ.
Board clocks recorded as MSP and SDF published them.
Planning around DL4040? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — DL4040 Minneapolis to Louisville on-time performance, measured from the MSP and SDF airport boards.
https://proflightsearch.com/flight/DL4040
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