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Uncover the best deals on Ontario to Houston flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ONT - IAH Flights
Useful information for finding best airline tickets from Ontario International to George Bush Intercontinental Houston on your next trip.
Cheapest Round Trip Flight
$259
Frontier Airlines
• 1 stop
• 8h 38m
Aug 28 – Aug 31
The cheapest round trip flight from Ontario to Houston (ONT-IAH-ONT) is currently $259
Cheapest Direct Flight
$311
Frontier Airlines
• nonstop
• 5h 20m
Aug 28
The cheapest nonstop flight from Ontario to Houston (ONT-IAH) is currently $311
Fastest Flight
5h 20m
The fastest nonstop flight from Ontario to Houston (ONT-IAH) takes 5h 20m
Top Airlines Flying from Ontario to Houston
Latest Flight Deals from Ontario (ONT) to Houston (IAH)
Compare and book low fare round-trip air tickets from Ontario to Houston. Ideal for travelers with confirmed return itineraries.
Aug 28 - Aug 31, Economy
Ontario → Houston
8h 38m
11:50 AM - 7:08 PM • 1 stop
Ontario → Houston
5h 22m
6:10 AM - 7:32 AM • nonstop
Frontier Airlines
Aug 28 - Aug 31, Economy
Ontario → Houston
13h 50m
10:49 AM - 9:19 PM • 1 stop
Ontario → Houston
5h 22m
6:10 AM - 7:32 AM • nonstop
Frontier Airlines
Flying to Houston soon? We've surfaced some of the most affordable last-minute flights from Ontario to Houston, ideal for urgent plans or spontaneous trips.
Aug 28 - Aug 31, Economy
Ontario → Houston
8h 38m
11:50 AM - 7:08 PM • 1 stop
Ontario → Houston
5h 22m
6:10 AM - 7:32 AM • nonstop
Frontier Airlines
Aug 28 - Aug 31, Economy
Ontario → Houston
13h 50m
10:49 AM - 9:19 PM • 1 stop
Ontario → Houston
5h 22m
6:10 AM - 7:32 AM • nonstop
Frontier Airlines
Looking for the fastest way to Houston? These direct flight options from ONT to IAH offer both convenience and value—no layovers, just straight to your destination.
FAQs on Ontario to Houston Flights
What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to IAH?
The most popular airline flying from Ontario to Houston are
Can I fly from ONT to IAH non-stop?
Yes, you can fly ONT to IAH non-stop on
Which airlines fly nonstop between Ontario and Houston?
The non-stop flights between Ontario and Houston are .
What’s the earliest departure time from ONT to IAH Airport?
The earliest flight leaves ONT at 9:33 am and lands in IAH - George Bush Intercontinental Houston
What are the airports in Houston?
IAH
Can I make changes to my Ontario to Houston flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ONT to IAH?
Read the fare rules of the Ontario to Houston air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Ontario and Houston?
operate flights between Ontario and Houston
How long does a flight from Ontario to Houston take?
It takes approximately 3 hour to fly non-stop from ONT to IAH, which is 1333.6 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to Houston (IAH) ?
In the past couple of days, the cheapest tickets to IAH from ONT were found on F9 : USD 259
Do I need a passport to fly between ONT and IAH?
No
What’s the latest departure time from ONT to IAH ?
The last flight leaves ONT at 11:50 am
Ontario (ONT) to Houston (IAH): Airport Information
| Origin Airport | Ontario International , Ontario, US |
| Destination Airport | George Bush Intercontinental Houston , Houston, US |
| Distance | 1334 miles |
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