ONT → SANOntario to San Diego

live

Direct flights from Ontario (ONT) to San Diego (SAN): 2 nonstop departures observed each week across 2 airlines. The median arrival is 190 minutes late. No cancellations were recorded across the 3 tracked flights. The nonstop covers 152 km, an estimated 42 minutes in the air. Measured by Pro Flight Search from live flight boards at Ontario and San Diego. Updated 5 September 2026 at 05:18 UTC.

ONT Ontario smooth · +11
SAN San Diego busy · +20
152 km · ~0h 42m est.
dep bank 15:00–16:312x weekly
Running clean · 2 airlines · 2x weekly · nonstop
79 / 100

route health from live ONT and SAN delay boards

Median arrival delay is +190 min. 0 of 3 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+190 minacross the last 3 operated legs
Flight time~0h 42mestimated from route distance
Weekly departures2x2 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesSouthwest Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Alaska AirlinesAS

Flights AS35 16:25 Fr

Southwest AirlinesWN

Flights WN4089 15:00 Fr · WN3623 16:00 Fr · WN3008 16:31 Fr

History

operated legs · board outcomes
09-04AS35dep −108 → arr+140
09-04WN3008dep +14 → arr+190
09-04WN3623dep +92 → arr+251

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
ONTOntario +11 min smooth 🌤 clear · N 0 kt Full ONT delay board →
SANSan Diego +20 min busy 🌤 scattered clouds · S 8 kt Full SAN delay board →

Weather lens

Current conditions put the pressure at SAN: 53% odds of a 15+ minute delay and around +17 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Ontario to San Diego route actually runs

Pro Flight Search records official board updates for nonstop ONT to SAN flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · 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 — Ontario (ONT) to San Diego (SAN) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/ONT-SAN
How we measure this →

ONT to SAN questions

Is ONT–SAN running on time right now?

Mostly on schedule. The arrival side at SAN is the weaker end, route health score 79/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on ONT–SAN?

Operators schedule 3 departures from ONT. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SAN delay card to confirm conditions when you'd arrive.

How long is the flight from ONT to SAN?

Great-circle distance is 152 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 41–43 min gate-to-gate on this route.

How often does ONT–SAN fly?

2 carriers operate this route, around 4 flights a week between them. Compare carrier days and times in the airline list above.