DL4677 DetroitDTW · 17:40 ChicagoMDW · 18:00
DL4677 by Delta Air Lines flies from Detroit (DTW) to Chicago (MDW) for the Sun, Oct 11 departure.
estimated arrival at MDW · local time · ~14h 29m from now
board checked 36m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 20:13.
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 operationmedian arrival −15 min · 0 cancelled · 6 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at DTW and MDW 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 Detroit to Chicago flights today
same route · Delta Air LinesIf DL4677 is cancelled, these are the other Delta Air Lines nonstop flights from Detroit to Chicago on the same day, with scheduled departure times in DTW local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How DL4677 actually runs
Pro Flight Search has tracked every published board update for DL4677 across the DTW and MDW boards: schedule changes, gate pushes and actual clocks. Usually lands ~15 min early. Based on 5 confirmed landings · 4/5 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how DL4677 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: N317CA, N668CA, N379CA, N391CA.
Board clocks recorded as DTW and MDW published them.
Planning around DL4677? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — DL4677 Detroit to Chicago on-time performance, measured from the DTW and MDW airport boards.
https://proflightsearch.com/flight/DL4677
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