IAH → ONTHouston to Ontario

live

Direct flights from Houston (IAH) to Ontario (ONT): 21 nonstop departures observed each week across 3 airlines. 71% of the last 17 operated flights arrived within 15 minutes of schedule. The median arrival is 4 minutes early. No cancellations were recorded across the 17 tracked flights. The nonstop covers 2,142 km, an estimated 3 hours 15 minutes in the air. Measured by Pro Flight Search from live flight boards at Houston and Ontario. Updated 17 August 2026 at 23:53 UTC.

IAH Houston smooth · +0
ONT Ontario smooth · +2
2,142 km · ~3h 15m est.
dep bank 06:10–20:3121x weekly
Runs mixed · 3 airlines · 21x weekly · nonstop
71% on time

of the last 17 operated IAH → ONT flights arrived within 15 minutes

Median arrival delay is −4 min. 0 of 17 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Search live fares for this route →
Median arrival−4 minacross the last 17 operated legs
Flight time~3h 15mestimated from route distance
Weekly departures21x3 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 17

Current nonstop fares

IAH → ONT · one way · economy · 1 adult

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TodayChecking…Direct airline fares
TomorrowChecking…Direct airline fares
In one weekChecking…Direct airline fares

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Air Transport InternationalFrontier AirlinesUnited 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
Air Transport International8C29% on time

Flights 8C3360 06:30 daily

Frontier AirlinesF9100% on time

Flights F93131 06:10 daily

United AirlinesUA

Flights UA1563 20:31 daily

History

operated legs · board outcomes
08-178C3360dep +17 → arr+14
08-17F93131dep +3 → arr−35
08-168C3360dep −4 → arr−4
08-16F93131dep +39 → arr+0
08-16UA1563dep +15 → arr−31
08-158C3360dep +50 → arr+48
08-15F93131arrived+2
08-15UA758dep +33 → arr−6
08-148C3360dep +36 → arr+36
08-14F93131dep +5 → arr−28
08-138C3360dep +47 → arr+47
08-13F93131dep +3 → arr−30
08-13UA1563dep +24 → arr−21
08-128C3360dep +22 → arr+24
08-12F93131dep +9 → arr−25
08-118C3360dep +26 → arr+25
08-11F93131dep +18 → arr−16

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
IAHHouston +0 min smooth 🌤 few clouds · SSE 9 kt Full IAH delay board →
ONTOntario +2 min smooth 🌤 few clouds · W 11 kt Full ONT delay board →

Weather lens

Current conditions put the pressure at ONT: 41% odds of a 15+ minute delay and around +11 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Houston to Ontario route actually runs

Pro Flight Search tracks every published board update for nonstop IAH to ONT flights: 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. Fares link straight to the operating airline with no markups.

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 — Houston (IAH) to Ontario (ONT) route reliability, measured from operated flights on official airport boards.

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

IAH to ONT questions

Is IAH–ONT running on time right now?

Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on IAH–ONT?

Operators schedule morning departures around 06:10 and evening departures around 20:31 from IAH. Earlier flights typically land before destination-airport delays accumulate later in the day; check the ONT delay card to confirm conditions when you'd arrive.

How long is the flight from IAH to ONT?

Great-circle distance is 2,142 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 181–214 min gate-to-gate on this route.

How often does IAH–ONT fly?

3 carriers operate this route, around 21 flights a week between them. Compare carrier days and times in the airline list above.