DL3978 LouisvilleSDF · 12:40 MinneapolisMSP · 13:53
DL3978 by Delta Air Lines flies from Louisville (SDF) to Minneapolis (MSP) for the Wed, Oct 21 departure.
arrival expected at MSP · on schedule
board checked 47m ago · checking again in 45s
Where the minutes go
last 6 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 operation0 cancelled · 6 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SDF and MSP 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 Louisville to Minneapolis flights today
same route · Delta Air LinesIf DL3978 is cancelled, these are the other Delta Air Lines nonstop flights from Louisville to Minneapolis on the same day, with scheduled departure times in SDF local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How DL3978 actually runs
Pro Flight Search has tracked every published board update for DL3978 across the SDF and MSP boards: schedule changes, gate pushes and actual clocks. Usually departs ~16 min late. Based on 6 confirmed departures · 3/6 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how DL3978 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, N693CA, N804SK, N802SK.
Board clocks recorded as SDF and MSP published them.
Planning around DL3978? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — DL3978 Louisville to Minneapolis on-time performance, measured from the SDF and MSP airport boards.
https://proflightsearch.com/flight/DL3978
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