IAH → ONTHouston to Ontario

live

Direct flights from Houston (IAH) to Ontario (ONT): 17 nonstop departures observed each week across 3 airlines. 67% of the last 6 operated flights arrived within 15 minutes of schedule. The median arrival is 5 minutes late. No cancellations were recorded across the 6 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 8 October 2026 at 20:23 UTC.

IAH Houston smooth · +0
ONT Ontario smooth · +0
2,142 km · ~3h 15m est.
dep bank 06:30–20:3017x weekly
Runs mixed · 3 airlines · 17x weekly · nonstop
67% on time

of the last 6 operated IAH → ONT flights arrived within 15 minutes

Median arrival delay is +5 min. 0 of 6 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+5 minacross the last 6 operated legs
Flight time~3h 15mestimated from route distance
Weekly departures17x3 direct airlines on the leg

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 International8C

Flights 8C3360 06:30 daily

Frontier AirlinesF9

Flights F93131 16:20 Mo Th Fr Su

United AirlinesUA

Flights UA1563 20:30 Mo We Th Fr Sa Su

History

operated legs · board outcomes
10-088C3360arrived+3
10-078C3360arrived+23
10-07UA1563dep −7 → arr−25
10-068C3360arrived+46
10-05F93131departed+5
10-05UA1563departed−3

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 🌤 clear · ENE 8 kt Full IAH delay board →
ONTOntario +0 min smooth 🌤 clear · N 0 kt Full ONT delay board →

Weather lens

Current conditions put the pressure at ONT: 35% odds of a 15+ minute delay and around +8 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 records official board updates for nonstop IAH to ONT 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 — 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 06:30 and evening departures around 20:30 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 17 flights a week between them. Compare carrier days and times in the airline list above.