DL3872Delta Air Lines · SLC → ONT
live · 15m ago
Route confirmed Delta Air Lines

DL3872 Salt Lake CitySLC OntarioONT

DL3872 by Delta Air Lines flies from Salt Lake City (SLC) to Ontario (ONT).

Right nowNext departure tomorrow Operates daily
05:10

scheduled from SLC

The route today

live boards
SLCSalt Lake CityOn-time likelySLC delay board →
ONTOntarioOn-time likelyONT delay board →
SLC→ONTevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
38%Chance of 15+ min delay
0.3%Chance of cancellation
+8 minAvg hub delay right now

Conditions at SLC and ONT 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 →

Tomorrow on this route

Forecast

Salt Lake City to Ontario with Delta Air Lines · Wed 28 Oct, local date

Outlook: about usual
Chance a departure leaves 60+ min late
3.3%1.0× usual

Forecast weather: 77% chance of rain at Salt Lake City

No cancellation outlook here: this airport's board does not publish cancellations reliably.

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 4 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Salt Lake City to Ontario flights today

same route · Delta Air Lines
DL1416departs 08:02
DL3172departs 11:27
DL2743departs 11:44
DL3747departs 15:27
DL4443departs 15:29
DL1614departs 23:05

If DL3872 is cancelled, these are the other Delta Air Lines nonstop flights from Salt Lake City to Ontario on the same day, with scheduled departure times in SLC local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How DL3872 actually runs

Pro Flight Search has tracked every published board update for DL3872 across the SLC and ONT boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at SLC and ONT.

The verdict above is that record speaking, so it reflects how DL3872 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around DL3872? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — DL3872 Salt Lake City to Ontario on-time performance, measured from the SLC and ONT airport boards.

Canonical URL
https://proflightsearch.com/flight/DL3872
How we measure this →