Cheapest€181.27
- Frontier Airlines FA581306:153h 26m09:41Houston IAHOntario ONT
Door to door 6h 36mCO2 545.4 kgChanges 0Fixed, no changes
Houston to Ontario flight
Flights from Houston to Ontario start at €208.41 and take 6h 35m at their fastest.
Check dates and fares
Fares and seats move by the day. Price Houston to Ontario on the date you actually want, rather than on the date this page was built.
The Flights from Houston to Ontario starts at €208.41 and takes 6h 35m door to door, run by 2 operators over 2,217 km, with around 6 departures a day. Fares bottom out about 45 days before departure.
- 6h 35mDoor to door
- 3h 25mMoving
- €208.41 to €396.62From
- 06:15 to 07:30First and last departure
- 6Per day
- 545.4 kgCO2
First and last are taken from the services we sell on 28 September 2026. The return direction keeps its own timetable and is not these times reversed.
€208.41 to €396.62 for one passenger across the 14 departure dates priced here. The low end is one day, not every day. Worked out from this corridor rather than held for anybody. The operator sets the price on the day.
Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €396.62Mon14
- about €335.26Tue15
- about €394.85Wed16
- about €349.42Thu17
- about €331.13Fri18
- about €371.25Sat19
- about €332.90Sun20
- about €229.64Mon21
- about €208.41Tue22
- about €256.20Wed23
- about €285.70Thu24
- about €276.26Fri25
- about €316.38Sat26
- about €267.41Sun27
Based on what this route has cost recently. The operator sets the price on the day, and the live fare is confirmed when you book.
The cheapest and the fastest on 28 September 2026
Fastest€240.27
- Southwest Airlines SA188106:523h 25m10:17Houston HOUOntario ONT
Door to door 6h 35mCO2 545.4 kgChanges 0Fixed, no changes
Airlines
| Operator | From | Fastest |
|---|---|---|
 Frontier Airlines | €181.27 | 6h 22m |
 Southwest Airlines | €200.15 | 6h 25m |
The flight gets you into Ontario. It does not get you a bed, and neither do we.
A room in Ontario for the night the flight gets in
Sort by distance from East Ontario and you can see which places are ten minutes on foot and which are not.
Search Ontario on Booking.comOr compare on Expedia
Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
When to book Houston to Ontario
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €234.3790 days
- €198.3860 days
- €165.9345 days
- €177.1430 days
- €200.1521 days
- €267.4114 days
- €332.907 days
- €394.853 days
- €396.621 days
- Cheapest lead time
- Fares bottom out around 45 days ahead, at €165.93.
- How much it moves
- The gap between the cheapest and dearest lead time is 139 percent. The dearest point is €396.62, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 45 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €267.41Sun
- €229.64Mon
- €208.41Tue
- €256.20Wed
- €285.70Thu
- €276.26Fri
- €316.38Sat
Where you leave from and where you arrive
Houston
Air
- IAH
- HOU
Ontario
Air
- ONT
What the journey actually looks like
- Direct or connecting
- 33% of the services we sell on this corridor run through without a change. The remaining 67% involve one connection.
- How far it really runs
- The route covers 2,217 km against 2,153 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Albuquerque, Phoenix, Santa Ana, Austin. The gap between arriving and leaving is 48 minutes, of which about 5 is walking.
- If the connection is missed
- The tightest connection we sell here has a 19 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
- First and last departure
- The first service of the day leaves Houston at 06:15 and the last at 07:30, across 6 departures The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Houston to Ontario
The questions people actually ask about this journey, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Houston to Ontario take?
The Flight from Houston to Ontario takes 6h 35m door to door, of which 3h 25m is spent moving. The route runs 2,217 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Houston to Ontario cost?
The Flight from Houston to Ontario starts at €208.41 for one passenger, as of 13 September 2026. A typical fare is €234.67. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Houston to Ontario?
2 operators run the Flight from Houston to Ontario: Frontier Airlines, Southwest Airlines. Between them they file around 6 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Houston to Ontario use?
The Flight from Houston to Ontario leaves from Houston HOU and arrives at Ontario ONT. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from Houston to Ontario?
Fares for the Flight from Houston to Ontario bottom out around 45 days ahead, at €165.93. The gap between the cheapest and dearest lead time across the window is 139 percent, measured on 13 September 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Houston to Ontario produce?
The Flight from Houston to Ontario produces about 545.4 kg of CO2 per passenger over 2217 km, which works out at roughly 246 grams per passenger kilometre. That figure is for the whole journey and for one traveller, not for the vehicle.
Where these numbers come from
Places, coordinates, operators, which operator serves which pair, and every distance on this page are real and come from open data. Where a corridor has a filed timetable the departure times are real too, and ferry fares are the prices the operators publish themselves.
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Where no operator publishes a fare for a corridor, the price here is our own estimate, worked out from the real distance and the real operator through a fare curve that follows lead time, day of the week and season. It tells you roughly what the journey costs. It is not a seat anyone has agreed to sell, and the payment step will not take it.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Houston to Ontario on 13 September 2026: 2217 km of route against 2153 km in a straight line, 6 services a day, 2 operators a cheapest fare of €208.41, and 6h 35m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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