$132 Cheap United flights from Houston to Ontario (IAH to ONT)

Find The Best Day To Fly from Houston to Ontario

Amazing United IAH to ONT Flight Deals

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were $191 round trip and $132 one way. Prices and availability subject to change. Additional terms may apply.

Mon, Sep 15 - Sat, Sep 20
IAH
Houston
ONT
Ontario
$191 Roundtrip, found 1 day ago
$191
Roundtrip
found 1 day ago
Select United flight, departing Mon, Sep 15 from Houston to Ontario, returning Sat, Sep 20, priced at $191 found 1 day ago
Fri, Sep 26 - Tue, Sep 30
IAH
Houston
ONT
Ontario
$204 Roundtrip, found 17 hours ago
$204
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Sep 26 from Houston to Ontario, returning Tue, Sep 30, priced at $204 found 17 hours ago
Fri, Sep 19 - Mon, Sep 22
IAH
Houston
ONT
Ontario
$226 Roundtrip, found 16 hours ago
$226
Roundtrip
found 16 hours ago
Select United flight, departing Fri, Sep 19 from Houston to Ontario, returning Mon, Sep 22, priced at $226 found 16 hours ago

ONT From IAH Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Ramada by Wyndham Ontario

Ramada by Wyndham Ontario

2 out of 5
per person
Aug 2 - Aug 6
found 1 day ago
Roundtrip flight included
Houston (IAH) to Ontario (ONT)
Hotel Seville

Hotel Seville

2 out of 5
per person
Aug 2 - Aug 6
found 1 day ago
Roundtrip flight included
Houston (IAH) to Ontario (ONT)
Economy Inn - Ontario Airport/Chino

Economy Inn - Ontario Airport/Chino

2 out of 5
Save 100% on your flight
per person
Aug 13 - Aug 19
found 1 day ago
Roundtrip flight included
Houston (IAH) to Ontario (ONT)
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Frequently asked questions

Can I catch a flight from Houston Airport to ONT right now?
It's prudent to find out about any travel advice reports and quarantine requirements in effect in your destination city. Ensure you visit our Covid-19 Travel Advisor for up-to-date info on flying to Ontario Airport.
What terminal is United Airlines at Houston Airport?
Before you set off from IAH to Los Angeles - Ontario Intl. Airport (ONT) with United Airlines, it's probably a good idea to contact the airline to find out your terminal information. While your boarding pass should have some of the details, there's no guarantee.
Are there United Airlines non-stop flights from IAH to ONT?
Plan for a stopover when jetting from Houston Airport to Ontario Airport, as United Airlines doesn't offer any direct flights on this route. While in transit, you might like to purchase a new novel or your favorite magazine from the airport bookstore to help pass the time.
How long is a United Airlines flight from IAH to ONT?
Bring that novel you've been longing to read. A flight from IAH to Ontario Airport with United Airlines takes roughly 5 hours and 57 minutes. You'll have plenty of time to get totally swept up in the riveting plot.
How many direct and indirect flights does United Airlines fly from IAH to ONT?
You'll find there are roughly 4 United Airlines flights daily from IAH to ONT.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Ontario Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Travelers ❤️ these 🏨 after their flight to Ontario

Ontario Airport Hotel & Conference Center

Ontario Airport Hotel & Conference Center

3.5 out of 5
700 N Haven Ave, Ontario, CA
This hotel features an outdoor pool, a 24-hour gym, and a restaurant. Traveling on business? Take advantage of the 24-hour business center and free WiFi in public ...
8.6/10 Excellent! (2,866 reviews)
"Very good"

Reviewed on Jul 16, 2025

Ontario Airport Hotel & Conference Center
La Quinta Inn & Suites by Wyndham Ontario Airport

La Quinta Inn & Suites by Wyndham Ontario Airport

3 out of 5
3555 Inland Empire Blvd, Ontario, CA
This hotel features an outdoor pool and a gym. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public areas, and free airport ...
8.2/10 Very Good! (1,902 reviews)
"The stuff was rude"

Reviewed on Jul 15, 2025

La Quinta Inn & Suites by Wyndham Ontario Airport
Ontario Airport Inn

Ontario Airport Inn

2.5 out of 5
1801 E G St, Ontario, CA
This hotel doesn't skimp on freebies - guests receive free buffet breakfast, free self parking, and a free airport shuttle. Traveling on business? Take advantage ...
8.6/10 Excellent! (1,567 reviews)
"I had a great time at this place. It was peaceful."

Reviewed on Jul 15, 2025

Ontario Airport Inn
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.