$96 Cheap Flights from Ontario (ONT) to Houston (HOU)

View $96 flight on Thu, Aug 21, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Houston William Hobby Airport (HOU)

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Cheap Flights from Ontario to Houston (ONT-HOU)

Prices were available within the past 7 days and start at $96 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Oct 8 - Fri, Oct 10
ONT
Ontario
IAH
Houston
$157 Roundtrip, found 5 days ago
$157
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Oct 8 from Ontario to Houston, returning Fri, Oct 10, priced at $157 found 5 days ago
Frontier Airlines
Fri, Aug 1 - Mon, Aug 4
ONT
Ontario
IAH
Houston
$160 Roundtrip, found 1 hour ago
$160
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Ontario to Houston, returning Mon, Aug 4, priced at $160 found 1 hour ago
Frontier Airlines
Fri, Aug 29 - Thu, Sep 11
ONT
Ontario
IAH
Houston
$162 Roundtrip, found 22 hours ago
$162
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Fri, Aug 29 from Ontario to Houston, returning Thu, Sep 11, priced at $162 found 22 hours ago
Frontier Airlines
Mon, Aug 11 - Mon, Aug 18
ONT
Ontario
IAH
Houston
$169 Roundtrip, found 1 hour ago
$169
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Aug 11 from Ontario to Houston, returning Mon, Aug 18, priced at $169 found 1 hour ago
Frontier Airlines
Fri, Aug 8 - Fri, Aug 15
ONT
Ontario
IAH
Houston
$170 Roundtrip, found 1 hour ago
$170
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Aug 8 from Ontario to Houston, returning Fri, Aug 15, priced at $170 found 1 hour ago
Southwest Airlines
Fri, Sep 12 - Fri, Sep 19
ONT
Ontario
HOU
Houston
$175 Roundtrip, found 4 days ago
$175
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Fri, Sep 12 from Ontario to Houston, returning Fri, Sep 19, priced at $175 found 4 days ago
Southwest Airlines
Sat, Sep 13 - Mon, Sep 15
ONT
Ontario
HOU
Houston
$176 Roundtrip, found 5 days ago
$176
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Sat, Sep 13 from Ontario to Houston, returning Mon, Sep 15, priced at $176 found 5 days ago
Frontier Airlines
Fri, Jul 25 - Fri, Aug 1
ONT
Ontario
IAH
Houston
$178 Roundtrip, found 18 hours ago
$178
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Fri, Jul 25 from Ontario to Houston, returning Fri, Aug 1, priced at $178 found 18 hours ago
United
Fri, Aug 22 - Sun, Aug 24
ONT
Ontario
IAH
Houston
$191 Roundtrip, just found
$191
Roundtrip
just found
Select United flight, departing Fri, Aug 22 from Ontario to Houston, returning Sun, Aug 24, priced at $191 just found
Delta
Fri, Sep 12 - Fri, Sep 19
ONT
Ontario
HOU
Houston
$198 Roundtrip, found 4 days ago
$198
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Sep 12 from Ontario to Houston, returning Fri, Sep 19, priced at $198 found 4 days ago

Find the cheapest month to fly from Ontario (ONT) to Houston (HOU)

March is typically the cheapest month to fly

From $69 - $549 per traveler.

Graph displaying average flight prices per month

Flights from Ontario (ONT) to Houston (IAH)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
George Bush Intercontinental
Airlines serving
American Airlines, Delta, Southwest Airlines
Roundtrip price
$156
Distance
1330 mi
Average flight time
5 hours 10 mins

Ontario to Houston Flights

The cheapest times to fly from Ontario to Houston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Houston are during the month of October. You can find some of the cheapest flights from Ontario to Houston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Houston

Sunday is one of the best days to book for cheap flights from Ontario to Houston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Houston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Houston in 2025. You can also book with separate airlines for your outbound and return journeys, from $96 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Houston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Houston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU) cost?
Cheap round-trip fares from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU) start from $130. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines and Spirit Airlines flight leaving ONT on August 5 2025 and touching down at HOU. The price was last updated on July 12 2025 and has not changed since.
What is the cheapest month to fly from ONT to HOU?
The cheapest flights from ONT to HOU are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU)?
Hop on a direct flight with Southwest Airlines and travel straight from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU).
What is the cheapest airline that flies from ONT to HOU?
Currently, the cheapest carrier offering one-way flights from ONT to HOU is Southwest Airlines. You can take off on this route from $75. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from ONT on October 4 2025. Prices were last updated on July 12 2025 and have not changed since.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU)?
On average, Los Angeles - Ontario Intl. Airport (ONT) only offers 1 nonstop flight to William P. Hobby Airport (HOU) each day. For more options, try Expedia's easy-to-use filter tool. Just enter your dates, then choose "1 Stop" or "2+ Stops" to find flights offering layovers.
What are the most popular departure times for flights from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU)?
Flights between ONT and HOU tend to be busiest at 11 AM. If you'd like a more relaxed experience and potentially cheaper prices, choose a time outside the usual busy windows.
What day of the week has the most flights from ONT to HOU?
Fly on a Friday if you're after the biggest selection of flights from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU).
What is the earliest flight from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU)?
The earliest flight leaving Los Angeles - Ontario Intl. Airport (ONT) is at around 7:55AM UTC-8. Board this plane and you'll reach William P. Hobby Airport (HOU) at approximately 12:50PM UTC-6. The total travel time is 2h 55m.
How long does it take to fly from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU)?
The average flight duration from ONT to HOU is 2 hours and 55 minutes, covering a distance of 1,350 mi.
What airline has the least delays from ONT to HOU?
With 96% of flights generally arriving on time, Southwest Airlines has the best on-time performance for nonstop flights from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU). To keep track of your flight status and receive notifications about any changes, head to the Expedia App.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU)?
To avoid possible delays on the Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Houston from Los Angeles - Ontario Intl. Airport (ONT)?
If you're traveling on a direct flight from Los Angeles - Ontario Intl. Airport (ONT) to Houston, you'll land at either George Bush Intercontinental Airport (IAH) or William P. Hobby Airport (HOU).
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU) last-minute?
Booking your flight from ONT to HOU shortly before your journey is typically more expensive. But if you're flexible with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book an ONT to HOU flight and hotel package?
You'll typically save money by securing an ONT to HOU flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've chosen your preferred accommodations and flights, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to William P. Hobby Airport (HOU)?
In most instances, you're able to reschedule or cancel your ONT to HOU flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you want more details, head to our Customer Service portal.

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