DL4839 St LouisSTL · 09:25 New YorkLGA · 12:56
DL4839 by Delta Air Lines flies from St Louis (STL) to New York (LGA).
scheduled from STL
⚖ DL4839 typically leaves +13 and lands −7. The air wins minutes back.Where the minutes go
last 7 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 −7 min · 0 cancelled · 11 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at STL and LGA 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 St Louis to New York flights today
same route · Delta Air LinesIf DL4839 is cancelled, these are the other Delta Air Lines nonstop flights from St Louis to New York on the same day, with scheduled departure times in STL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How DL4839 actually runs
Pro Flight Search has tracked every published board update for DL4839 across the STL and LGA boards: schedule changes, gate pushes and actual clocks. Usually lands ~7 min early. Based on 11 confirmed landings · 10/11 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 DL4839 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: N153PQ, N937XJ, N933XJ, N910XJ.
Board clocks recorded as STL and LGA published them.
Planning around DL4839? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — DL4839 St Louis to New York on-time performance, measured from the STL and LGA airport boards.
https://proflightsearch.com/flight/DL4839
.