DL4070 OntarioONT · 11:57 SeattleSEA · 14:56
DL4070 by Delta Air Lines flies from Ontario (ONT) to Seattle (SEA) for the Thu, Nov 12 departure.
departs ONT · 33 min late
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at ONT and SEA are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records 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 →
Tomorrow at Ontario
ForecastFri 13 Nov, local date
- 95% chance of rain
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
Tomorrow at Seattle
ForecastFri 13 Nov, local date
- 93% chance of rain
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Ontario to Seattle flights today
same route · Delta Air LinesIf DL4070 is cancelled, these are the other Delta Air Lines nonstop flights from Ontario to Seattle on the same day, with scheduled departure times in ONT local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →
How DL4070 actually runs
Pro Flight Search has tracked every published board update for DL4070 across the ONT and SEA boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: departed +10 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how DL4070 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: N303SY, N281SY.
Board clocks recorded as ONT and SEA published them.
Planning around DL4070? 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: DL4070 Ontario to Seattle on-time performance, measured from the ONT and SEA airport boards.
https://proflightsearch.com/flight/DL4070
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