£103 Cheap Flights from Houston (IAH) to Ontario (ONT)

View £103 flight on Wed, 27 May 2026Opens in a new window

Flight 1

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

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

Prices were available within the past 7 days and start at £103 for one-way flights and £242 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 13 May - Tue, 19 May
IAH
Houston
ONT
Ontario
£242 Return, found 21 hours ago
£242
Return
found 21 hours ago
Select Delta flight, departing Wed, 13 May from Houston to Ontario, returning Tue, 19 May, priced at £242 found 21 hours ago
Delta
Wed, 13 May - Thu, 21 May
IAH
Houston
ONT
Ontario
£252 Return, found 21 hours ago
£252
Return
found 21 hours ago
Select Delta flight, departing Wed, 13 May from Houston to Ontario, returning Thu, 21 May, priced at £252 found 21 hours ago
United
Fri, 15 May - Sun, 17 May
IAH
Houston
ONT
Ontario
£301 Return, found 21 hours ago
£301
Return
found 21 hours ago
Select United flight, departing Fri, 15 May from Houston to Ontario, returning Sun, 17 May, priced at £301 found 21 hours ago
United
Tue, 12 May - Sun, 17 May
IAH
Houston
ONT
Ontario
£317 Return, found 21 hours ago
£317
Return
found 21 hours ago
Select United flight, departing Tue, 12 May from Houston to Ontario, returning Sun, 17 May, priced at £317 found 21 hours ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IAH
Houston
ONT
Ontario
£352 Return, found 1 day ago
£352
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Houston to Ontario, returning Wed, 27 May, priced at £352 found 1 day ago
Alaska Airlines
Fri, 1 May - Tue, 5 May
IAH
Houston
ONT
Ontario
£360 Return, found 3 days ago
£360
Return
found 3 days ago
Select Alaska Airlines flight, departing Fri, 1 May from Houston to Ontario, returning Tue, 5 May, priced at £360 found 3 days ago
Alaska Airlines
Fri, 19 Jun - Tue, 23 Jun
IAH
Houston
ONT
Ontario
£373 Return, found 1 day ago
£373
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 19 Jun from Houston to Ontario, returning Tue, 23 Jun, priced at £373 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IAH
Houston
ONT
Ontario
£386 Return, found 1 day ago
£386
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Houston to Ontario, returning Wed, 27 May, priced at £386 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IAH
Houston
ONT
Ontario
£390 Return, found 1 day ago
£390
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Houston to Ontario, returning Wed, 27 May, priced at £390 found 1 day ago
JetBlue Airways
Thu, 2 Jul - Mon, 6 Jul
IAH
Houston
ONT
Ontario
£703 Return, just found
£703
Return
just found
Select JetBlue Airways flight, departing Thu, 2 Jul from Houston to Ontario, returning Mon, 6 Jul, priced at £703 just found

Frequently asked questions

How much is a flight from IAH to Ontario Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey between IAH and ONT was £242. Cheap tickets don't hang around, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from IAH to Ontario Airport?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from George Bush Intercontinental Airport (IAH) to Los Angeles - Ontario Intl. Airport (ONT) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for George Bush Intercontinental Airport (IAH) to ONT flights, you'll see a "no change fees" filter for you to select.
How far is the flight from George Bush Intercontinental Airport (IAH) to Ontario Airport?
Around 2,100 kilometres separates Houston and Ontario, so pack something to help you while away a couple of hours. That gripping novel you haven't had time to finish will be perfect.
Which airlines fly direct from Houston Airport to Ontario Airport?
You won't find any airlines operating directly between Houston Airport and Los Angeles - Ontario Intl. Airport (ONT), so be prepared to make at least one stop on your journey. A layover, whether short or long, can be a welcome way to break up a trip!
Are Houston Airport to Ontario Airport flight tickets cheaper when they're purchased at the last minute?
Booking last minute from Houston Airport to Ontario Airport can be hit-or-miss. You may be able to score a great bargain, but you could also miss out completely! If you'd rather start your travel planning early on, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines publish their prices so far in advance. Our suggestion? Check back often as updates are made frequently.

Frequently asked questions

How much does a flight from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) cost?
One-way flights typically cost between £279 and £976 and return flights often range between £279 and £976. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
August is typically the cheapest month to fly from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), with average return fares of approximately £431. This is about 15% lower than the average price throughout the year. August often sees lower prices as the peak summer travel season begins to wind down. Other cheap months to fly from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) include April and September.
Which airlines fly direct from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Enter IAH to ONT and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
To find a cheap flight from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The best airline to fly with from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) will differ from traveller to traveller. If you like to fly early, F9 offers early morning flights. If price is the most important factor, F9 typically offers the lowest fares. AS offers the most daily flights from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
When looking for the best time to fly from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), it's a balance between price and popularity. Based on booking data from the past year, you'll find the cheapest flights in August and September, with average prices around £431. However, April is the most popular month for this route, meaning there are plenty of flight options available. If you prioritize savings, aim for late summer, but if you prefer more choice and potentially better schedules, April might be a good fit, though it could be pricier.
How many flights per day from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
There are approximately 2 nonstop flights per day from George Bush Intercontinental (IAH) to Los Angeles - Ontario Intl. (ONT). For even more choice, look at flights that include layovers. You'll find around 55 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), Dallas-Fort Worth Intl. (DFW), and Denver Intl. (DEN).
What is the earliest flight from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The earliest flight from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) typically departs at approximately 12:15 AM local time. This service is operated by United Airlines and Delta Air Lines. This is a seasonal service active in November. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
You'll typically find the most flights from George Bush Intercontinental (IAH) to Los Angeles - Ontario Intl. (ONT) on a Friday, with around 50 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, Alaska Airlines, and American Airlines. Friday offers notably more flight options compared to other days of the week.
What are the most popular departure times for flights from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The most popular departure times for flights from George Bush Intercontinental (IAH) to Los Angeles - Ontario Intl. (ONT) are in the early morning, from 6am to 9am. Approximately 26% of passengers prefer this time window. Many major carriers, including American Airlines, United Airlines and Frontier Airlines, offer flights during this window. These times work well because you can get an early start to your travel day and arrive at your destination with plenty of time left.
How long does it take to fly from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Direct flights from IAH to ONT usually take about 3 hours 30 minutes, traveling roughly 1,331 miles. If you opt for a connecting flight, expect to add around 3 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Select the "Business class" and "First class" filters when looking for IAH to ONT flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight with Expedia?
It's easy to earn miles on a Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Ontario from George Bush Intercontinental (IAH)?
If you're planning to travel to Ontario from George Bush Intercontinental (IAH), you can fly directly into Los Angeles - Ontario Intl. (ONT) Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), Dallas-Fort Worth Intl. (DFW) before reaching Ontario. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) at the last minute?
Typically, booking a last minute flight from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package?
Securing a Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
If you booked your Houston, TX (IAH-George Bush Intercontinental) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
George Bush Intercontinental
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, Delta, JetBlue Airways, United
Return price
£241
Distance
2128 km
Average flight time
1 hour 38 mins

Book with confidence

Compare flights from Houston to Ontario easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Houston to Ontario. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Los Angeles - Ontario Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from George Bush Intercontinental to Los Angeles - Ontario Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from George Bush Intercontinental (IAH) to Los Angeles - Ontario Intl. (ONT)

The easiest way to view the best deals on flights from Houston to Ontario today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from George Bush Intercontinental to Los Angeles - Ontario Intl. start at just £242 and range up to £703.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Houston and Ontario
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Houston to Ontario flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from George Bush Intercontinental to Los Angeles - Ontario Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Houston to Ontario easily and book with confidence

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