IAH - ONT

$61 Find Cheap Flights from Houston George Bush Airport to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from George Bush Intcntl to Ontario departing on 2/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$128
Overall average: $199
Frontier
sáb. 1/24sáb. 2/7
IAH - ONT • 1 stop
Cheapest non-stop
$157
Typical prices: $119-$243
Frontier
lun. 1/19lun. 1/26
IAH - ONT • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Frontier's Economy Bundle includes a carry-on and seat.
IAH offers free Wi-Fi throughout all terminals.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from $333 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 38% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Ontario!
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Flight Deals

Cheap Flights from George Bush Intcntl to Ontario (IAH-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from George Bush Intcntl to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from George Bush Intcntl to Ontario

sáb., ene. 24 - sáb., feb. 7
Frontier Logo
7:00 pm - 11:24 pm
IAH
-
ONT
6h 24m1 stop
Frontier Logo
7:15 am - 3:13 pm
ONT
-
IAH
5h 58m1 stop
$128Frontier
sáb., ene. 31 - sáb., feb. 7
Frontier Logo
4:08 pm - 11:24 pm
IAH
-
ONT
9h 16m1 stop
Frontier Logo
7:15 am - 3:13 pm
ONT
-
IAH
5h 58m1 stop
$129Frontier
sáb., ene. 24 - sáb., feb. 7
Frontier Logo
10:30 am - 11:24 pm
IAH
-
ONT
14h 54m1 stop
Frontier Logo
7:15 am - 11:39 pm
ONT
-
IAH
14h 24m1 stop
$135Frontier
vie., ene. 30 - mar., feb. 3
Frontier Logo
8:02 pm - 12:20 am
IAH
-
ONT
6h 18m1 stop
Frontier Logo
7:15 am - 3:13 pm
ONT
-
IAH
5h 58m1 stop
$140Frontier
sáb., ene. 24 - vie., ene. 30
Frontier Logo
4:08 pm - 11:24 pm
IAH
-
ONT
9h 16m1 stop
Frontier Logo
6:20 am - 3:52 pm
ONT
-
IAH
7h 32m1 stop
$145Frontier
sáb., ene. 17 - dom., ene. 18
Frontier Logo
4:10 pm - 10:59 pm
IAH
-
ONT
8h 49m1 stop
Frontier Logo
3:23 pm - 8:42 pm
ONT
-
IAH
3h 19mnonstop
$146Frontier
vie., feb. 6 - dom., feb. 8
Frontier Logo
4:47 pm - 12:20 am
IAH
-
ONT
9h 33m1 stop
Frontier Logo
6:20 am - 6:00 pm
ONT
-
IAH
9h 40m1 stop
$148Frontier
dom., ene. 25 - mié., ene. 28
Frontier Logo
10:12 pm - 12:10 pm
IAH
-
ONT
15h 58m1 stop
Frontier Logo
7:15 am - 11:39 pm
ONT
-
IAH
14h 24m1 stop
$152Frontier
jue., ene. 22 - vie., ene. 23
Frontier Logo
3:11 pm - 12:20 am
IAH
-
ONT
11h 09m1 stop
Frontier Logo
1:46 pm - 7:07 pm
ONT
-
IAH
3h 21mnonstop
$154Frontier
jue., ene. 15 - sáb., ene. 24
Frontier Logo
1:20 pm - 5:44 pm
IAH
-
ONT
6h 24m1 stop
Frontier Logo
7:15 am - 3:13 pm
ONT
-
IAH
5h 58m1 stop
$155Frontier
Booking Insights

KAYAK's insights & trends for George Bush Intcntl to Ontario flights

Get data-powered insights and trends into flights from George Bush Intcntl to Ontario to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Houston George Bush Airport to Ontario?

The average price of all round-trip flights from Houston George Bush Intcntl Airport to Ontario clicked on KAYAK for each day over the last 12 months.

When flying from Houston George Bush Airport to Ontario, you should consider leaving on a Friday and avoid Sundays if you are looking for the best rates. For your return to Houston George Bush Airport, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

What is the cheapest month to fly from Houston George Bush Intcntl Airport to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston George Bush Intcntl Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Houston George Bush Intcntl Airport to Ontario is February, where tickets cost $130 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $338 and $304 respectively.

How far in advance should I book a flight from Houston George Bush Intcntl Airport to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Houston George Bush Intcntl Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Houston George Bush Intcntl Airport to Ontario, you should book around 2 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Expert advice

Expert advice for your flight from George Bush Intcntl to Ontario

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Frontier

Frontier's Economy Bundle includes a carry-on and seat choice, ideal for budget travelers.


Opt for Premium Bundle for extra legroom and priority boarding, just $20 more than Economy.

United Airlines

United's Economy Plus offers up to six inches more legroom, enhancing comfort on medium-haul flights.


Purchase Priority Boarding to ensure overhead bin space, placing you in Zone 2.

Airports
IAH

IAH's free Wi-Fi is available across all terminals. Connect to 'Free Airport WIFI' for seamless browsing before your flight.

ONT

For budget-friendly travel, use the Metrolink San Bernardino Line to Rancho Cucamonga Station, then transfer to the ONT Connect Shuttle.

Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
John Walton

John Walton

Expert on IAH

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Jennifer Simonson

Jennifer Simonson

Expert on ONT

Jennifer Simonson

Jennifer Simonson

Jennifer Simonson is driven by her lifelong commitment to exploring the globe. Her insatiable curiosity had led her to immerse herself into diverse locations like Oklahoma City and Pismo. Her hotel recommendations are the result of the myriad hotels she's stayed at across her travels. Along her journey, she cherishes engaging conversations with locals, indulging in the finest ice cream, trying her hand at surfing, and embarking on nature-filled hikes.

Read more

Good to know

Low seasonSeptember
Cheapest flight$61
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Houston George Bush Airport to Ontario

When to book flights from George Bush Intcntl to Ontario

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Houston George Bush Airport to Ontario flights

  • What is the cheapest flight from Houston George Bush Intcntl Airport to Ontario?

    In the last 3 days, the lowest price for a flight from Houston George Bush Intcntl Airport to Ontario was $61 for a one-way ticket and $127 for a round-trip.

  • Do I need a passport to fly between Houston George Bush Airport and Ontario?

    No

  • Which airports will I be using when flying from Houston George Bush Airport to Ontario?

    Houston George Bush Airport and Ontario are both served by 1 main airport. You will leave Houston George Bush Airport from Houston George Bush Intcntl and will be arriving at Ontario.

  • Which airlines offer Wi-Fi service onboard planes from Houston George Bush Airport to Ontario?

    Alaska Airlines, Delta, American Airlines, and JetBlue offer inflight Wi-Fi service on the Houston George Bush Airport to Ontario flight route.

  • Which aircraft models fly most regularly from Houston George Bush Airport to Ontario?

    The Airbus A321neo is the aircraft model that flies most regularly on the Houston George Bush Airport to Ontario flight route.

  • Which airline alliances offer flights from Houston George Bush Airport to Ontario?

    oneworld, and Star Alliance are the airline alliances operating flights between Houston George Bush Airport and Ontario, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Houston George Bush Airport to Ontario?

    There are nonstop flights from Houston George Bush Airport to Ontario on a daily basis.

  • Which is the best airline for flights from Houston to Ontario, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Houston to Ontario are United Airlines and American Airlines. With an average price for the route of $391 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $362 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Houston George Bush Airport to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston George Bush Airport to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston George Bush Airport to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Houston George Bush Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Houston George Bush Airport to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Houston George Bush Airport with another airline. Booking your flights between Houston George Bush Airport and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston George Bush Airport to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Houston George Bush Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Houston George Bush Intcntl Airport to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $115 or less one-way and $220 or less round-trip.

Prefer to fly direct from Houston George Bush Airport to Ontario?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Houston George Bush Intcntl to Ontario.
Find which airlines fly direct from Houston George Bush Intcntl Airport to Ontario Airport, which days they fly and book direct flights.

Direct departures

Houston George Bush Intcntl to Ontario

Monday

Frontier, United Airlines

Frontier, United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

Frontier, United Airlines

Frontier, United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Ontario to Houston George Bush Intcntl

Monday

Frontier, United Airlines

Frontier, United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

Frontier, United Airlines

Frontier, United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 3 airlines serving from George Bush Intcntl to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Houston to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from George Bush Intcntl to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9129 reviews
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
8.1Crew
Airline reviews

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

2.0 MediocreGray, Dec 2025
IAH - SMF
Read more United Airlines reviews

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Crew was excellent. This was a relatively long flight though and had very little leg room, and no entertainment.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight was delayed and missed my connection Lufthansa didn’t respond.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

Overall it was good. I missed my connection but I was put on another flight.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

We are too tired and frustrated to comment politely at this point

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

We were delayed three times ,and that destroyed my plans, and reservations

Very bad! No good service delayed my second connection flight

They canceled flight. Hard to believe there was even a plane incoming for us to get on

Book with frontier airlines with the mentality that they'll cancel your flight, kick you off and lose your luggage. Anything besides that is a win. Compare prices with other airlines (to include luggage) and if frontier is still worth it, book it but know all of their policies.

Everything you need to know for your flight from George Bush Intcntl to Ontario

Information on your arrival and departure airports