WN3876Southwest Airlines · ONT → PHX
live · 23m ago
Route confirmed Southwest Airlines

WN3876 OntarioONT PhoenixPHX

WN3876 by Southwest Airlines flies from Ontario (ONT) to Phoenix (PHX).

Right nowNext departure today Operates daily
13:50

scheduled from ONT

The route today

live boards
ONTOntarioOn-time likelyONT delay board →
PHXPhoenixOn-time likelyPHX delay board →
ONT→PHXevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
39%Chance of 15+ min delay
0.8%Chance of cancellation
+8 minAvg hub delay right now

Conditions at ONT and PHX 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

Ontario to Phoenix with Southwest Airlines · Thu 29 Oct, local date

Outlook: elevated
Chance a departure leaves 60+ min late
8.4%1.3× usual

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 Ontario to Phoenix flights today

same route · Southwest Airlines
WN3585departs 06:10
WN3879departs 06:10
WN2475departs 09:15
WN1915departs 09:25
WN528departs 09:40
WN3293departs 12:55

If WN3876 is cancelled, these are the other Southwest Airlines nonstop flights from Ontario to Phoenix on the same day, with scheduled departure times in ONT local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN3876 actually runs

Pro Flight Search has tracked every published board update for WN3876 across the ONT and PHX boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at ONT and PHX.

The verdict above is that record speaking, so it reflects how WN3876 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around WN3876? 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 — WN3876 Ontario to Phoenix on-time performance, measured from the ONT and PHX airport boards.

Canonical URL
https://proflightsearch.com/flight/WN3876
How we measure this →