DL8939 ChicagoMDW · 23:00 San DiegoSAN · 00:04
DL8939 by Delta Air Lines flies from Chicago (MDW) to San Diego (SAN).
Same number through MDW → PHX → SAN
scheduled from MDW
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at MDW and SAN 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.
How DL8939 actually runs
Pro Flight Search has tracked every published board update for DL8939 across the MDW and SAN boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed +49 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how DL8939 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: N664DN.
Board clocks recorded as MDW and SAN published them.
Planning around DL8939? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — DL8939 Chicago to San Diego on-time performance, measured from the MDW and SAN airport boards.
https://proflightsearch.com/flight/DL8939
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