Southwest AirlinesDepart05:00
Sun, Nov 15ONT → HOU
3h 45m · 1 stop
$147one way, per person
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- Cheapest fare
- $79
- Cheapest month
- November
- Direct flights
- Yes
- Flight time
- 3h 14m
Frontier Airlines · Wed, Nov 25
from $79
Frontier Airlines and United Airlines
2,150 km
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Cheapest month to fly from Ontario to Houston
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
See every date in November 2026 →
Plan the rest of your trip to Houston
Where to stay, what to do and getting around, from our travel partners.
About flights from Ontario to Houston
Ontario (ONT) and Houston (HOU) are about 2,150 km apart. Direct flights take around 3h 14m, and recent direct fares were with Frontier Airlines and United Airlines. Over the next few months, one-way fares start from $79, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Ontario to Houston?
The cheapest one-way fare we've seen recently is $79 with Frontier Airlines, departing Wednesday, November 25, 2026. Over the coming months, the lowest fare in each month ranges from $79 to $287.
What is the cheapest month to fly from Ontario to Houston?
November 2026 currently has the lowest fares, from $79 one way.
Are there direct flights from Ontario to Houston?
Yes. Recent direct fares were with Frontier Airlines and United Airlines.
How long is the flight from Ontario to Houston?
A direct flight takes about 3h 14m. Ontario and Houston are around 2,150 km apart.
Which airlines fly from Ontario to Houston?
Recent fares on this route were with Frontier Airlines, United Airlines and Southwest Airlines.
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