IAH → ONTHouston to Ontario

live

Direct flights from Houston (IAH) to Ontario (ONT): 13 nonstop departures observed each week across 2 airlines. The median arrival is 4 minutes late. No cancellations were recorded across the 4 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 18 October 2026 at 18:11 UTC.

Today, IAH → ONT

Sun 18 Oct · local times
  1. 20:30 UA1563United On scheduleGate C12 · TC ·
  2. · 8C3360ATI Departed Landed 07:54 +31

Checked IAH board 13:11 · ONT board 10:18

IAH Houston smooth · +0
ONT Ontario smooth · +0
2,142 km · ~3h 15m est.
dep bank 06:30–20:3013x weekly
Running clean · 2 airlines · 13x weekly · nonstop
100 / 100

route health from live IAH and ONT delay boards

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

Median arrival+4 minacross the last 4 operated legs
Flight time~3h 15mestimated from route distance
Weekly departures13x2 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Air Transport InternationalUnited 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

United AirlinesUA

Flights UA1563 20:30 Mo We Th Fr Sa Su

History

operated legs · board outcomes
10-188C3360arrived+31
10-178C3360arrived+3
10-17UA1563dep +0 → arr−7
10-16UA1563departed+4

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 · E 5 kt Full IAH delay board →
ONTOntario +0 min smooth 🌤 mostly cloudy · N 0 kt Full ONT delay board →

Weather lens

Current conditions put the pressure at ONT: 36% 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?

2 carriers operate this route, around 13 flights a week between them. Compare carrier days and times in the airline list above.