$56 Cheap Flights from Houston (IAH) to Ontario (ONT)

View $56 flight on Mon, Oct 20, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from Houston to Ontario (IAH-ONT)

Prices were available within the past 7 days and start at $56 for one-way flights and $100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Nov 13 - Fri, Nov 14
IAH
Houston
ONT
Ontario
$100 Roundtrip, found 5 days ago
$100
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Houston to Ontario, returning Fri, Nov 14, priced at $100 found 5 days ago
Frontier Airlines
Fri, Oct 3 - Sun, Oct 5
IAH
Houston
ONT
Ontario
$112 Roundtrip, found 4 hours ago
$112
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Fri, Oct 3 from Houston to Ontario, returning Sun, Oct 5, priced at $112 found 4 hours ago
Frontier Airlines
Fri, Oct 10 - Sun, Oct 12
IAH
Houston
ONT
Ontario
$114 Roundtrip, found 6 hours ago
$114
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Fri, Oct 10 from Houston to Ontario, returning Sun, Oct 12, priced at $114 found 6 hours ago
Frontier Airlines
Thu, Nov 13 - Sun, Nov 16
IAH
Houston
ONT
Ontario
$116 Roundtrip, found 2 hours ago
$116
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Houston to Ontario, returning Sun, Nov 16, priced at $116 found 2 hours ago
Frontier Airlines
Fri, Oct 24 - Thu, Nov 13
IAH
Houston
ONT
Ontario
$121 Roundtrip, found 5 days ago
$121
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Oct 24 from Houston to Ontario, returning Thu, Nov 13, priced at $121 found 5 days ago
Frontier Airlines
Thu, Sep 11 - Thu, Sep 18
IAH
Houston
ONT
Ontario
$122 Roundtrip, found 14 hours ago
$122
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Thu, Sep 11 from Houston to Ontario, returning Thu, Sep 18, priced at $122 found 14 hours ago
Frontier Airlines
Fri, Oct 24 - Sun, Nov 2
IAH
Houston
ONT
Ontario
$126 Roundtrip, found 5 days ago
$126
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Oct 24 from Houston to Ontario, returning Sun, Nov 2, priced at $126 found 5 days ago
American Airlines
Sat, Oct 4 - Thu, Oct 9
IAH
Houston
ONT
Ontario
$172 Roundtrip, found 7 hours ago
$172
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Sat, Oct 4 from Houston to Ontario, returning Thu, Oct 9, priced at $172 found 7 hours ago
Hawaiian Airlines
Tue, Oct 28 - Tue, Nov 4
IAH
Houston
ONT
Ontario
$210 Roundtrip, found 5 hours ago
$210
Roundtrip
found 5 hours ago
Select Hawaiian Airlines flight, departing Tue, Oct 28 from Houston to Ontario, returning Tue, Nov 4, priced at $210 found 5 hours ago
United
Thu, Dec 11 - Sun, Dec 14
IAH
Houston
ONT
Ontario
$211 Roundtrip, found 3 hours ago
$211
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Dec 11 from Houston to Ontario, returning Sun, Dec 14, priced at $211 found 3 hours ago

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

March is typically the cheapest month to fly

From $69 - $499 per traveler.

Graph displaying average flight prices per month

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city center is 42 minutes. Flights from $289
SNA
John Wayne
Cheapest
Average driving time to city center42 min
Flights from $289
Flights from Houston (IAH) to Ontario (ONT)
Origin airport
George Bush Intercontinental
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, United
Roundtrip price
$100
Distance
1330 mi
Average flight time
1 hour 27 mins

Houston to Ontario Flights

The cheapest times to fly from Houston to Ontario

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 Houston to Ontario are during the month of November. You can find some of the cheapest flights from Houston to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Ontario

Sunday is one of the best days to book for cheap flights from Houston to Ontario: 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 Houston to Ontario

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 Houston to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $56 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 Houston to Ontario 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 Houston to Ontario 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 George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Lock in a cheap one-way flight from $56 or cheap return flight from $100 from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)?
Planning your trip for November is a good way to save, as it's the cheapest month for flights between IAH and ONT. You'll usually find the lowest prices during the off-season.
Which airlines fly direct from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)?
You can travel nonstop from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT) on a United Airlines flight.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)?
The cheapest airline to offer flights between George Bush Intercontinental Airport (IAH) and Los Angeles - Ontario Intl. Airport (ONT) can vary based on your travel dates. Frontier Airlines and United Airlines are just some well-known options offering well-priced fares. Use Expedia's search tool to compare airlines in one place and find the right IAH to ONT flight that fits your budget.
How many flights per day from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)?
On average, you'll only find 1 nonstop flight operating from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT) per day. If this doesn't suit your schedule, think about flights with a layover. Simply filter your search results on Expedia to include one or more stops to find the next best option.
What are the most popular departure times for flights from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)?
More travelers fly between IAH and ONT at 8 PM than at any other time of day. Looking for a quieter experience? Consider flying outside peak hours and you could save on your ticket as well.
What day of the week has the most flights from IAH to ONT?
Friday has the most flights from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT). Consider jetting off on this day and you'll have the best chance of finding a departure that fits your plans.
What is the earliest flight from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)?
The first flight of the day jetting off from George Bush Intercontinental Airport (IAH) is at around 7:10PM UTC-6. Hop on this flight and you'll arrive at Los Angeles - Ontario Intl. Airport (ONT) at approximately 8:46PM UTC-8. The total travel time is 3h 36m.
How long does it take to fly from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)?
Flights from IAH to ONT have an average travel time of 3 hours and 41 minutes. The distance between the two is 1,350 mi.
What airline has the least delays from IAH to ONT?
Consider traveling with United Airlines if you'd like to go straight from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT) without any delays. This carrier has the best track record for punctuality, with an on-time performance of 81%. Want to get notified of any changes? You can check your flight status using the Expedia App.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)?
Choose a flight from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT) that takes off before 3 PM to reduce the risk of cancellations. Departures later than this are on average 22% more likely to be canceled.**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 Ontario from George Bush Intercontinental Airport (IAH)?
Take a direct flight from George Bush Intercontinental Airport (IAH) to Ontario and come in for landing at one of these hubs:

  • Los Angeles Intl. Airport (LAX)
  • John Wayne Airport (SNA)
  • Los Angeles - Ontario Intl. Airport (ONT)

Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your flight from IAH to ONT just before your journey is generally more expensive. However, if you're flexible with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book an IAH to ONT flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAH to ONT flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the stress out of travel planning. Just secure your flights and choose from our extensive range of hotels, then tailor your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT)?
You can usually reschedule or cancel your IAH to ONT flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.