ONT - IAH

$59 Find Cheap Flights from Ontario to Houston George Bush Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to George Bush Intcntl departing on 10/2. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Houston George Bush Intcntl Airport

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

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to George Bush Intcntl 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 Ontario to George Bush Intcntl

Fri, Sep 5 - Sun, Sep 7
Frontier Logo
12:28 pm - 5:47 pmONT-IAH
3h 19mnonstop
Frontier Logo
5:07 pm - 6:35 pmIAH-ONT
3h 28mnonstop
$128Frontier
Find Deal
Thu, Sep 4 - Sun, Sep 7
Frontier Logo
12:28 pm - 5:47 pmONT-IAH
3h 19mnonstop
Frontier Logo
5:07 pm - 6:35 pmIAH-ONT
3h 28mnonstop
$129Frontier
Find Deal
Fri, Aug 29 - Mon, Sep 1
Frontier Logo
12:44 pm - 6:15 pmONT-IAH
3h 31mnonstop
Frontier Logo
5:16 pm - 6:34 pmIAH-ONT
3h 18mnonstop
$130Frontier
Find Deal
Mon, Aug 18 - Fri, Aug 22
Frontier Logo
12:48 pm - 6:19 pmONT-IAH
3h 31mnonstop
Frontier Logo
5:16 pm - 6:34 pmIAH-ONT
3h 18mnonstop
$134Frontier
Find Deal
Sat, Jul 26 - Sun, Jul 27
Frontier Logo
7:00 am - 4:14 pmONT-IAH
7h 14m1 stop
Frontier Logo
5:12 pm - 8:52 pmIAH-ONT
5h 40m1 stop
$135Frontier
Find Deal
Fri, Oct 3 - Sun, Oct 5
Frontier Logo
12:28 pm - 5:47 pmONT-IAH
3h 19mnonstop
Frontier Logo
5:07 pm - 6:33 pmIAH-ONT
3h 26mnonstop
$138Frontier
Find Deal
Mon, Jul 14 - Fri, Jul 18
Frontier Logo
12:48 pm - 6:19 pmONT-IAH
3h 31mnonstop
Frontier Logo
5:09 pm - 6:27 pmIAH-ONT
3h 18mnonstop
$140Frontier
Find Deal
Fri, Jul 25 - Sun, Aug 3
Frontier Logo
12:48 pm - 6:19 pmONT-IAH
3h 31mnonstop
Frontier Logo
5:12 pm - 8:52 pmIAH-ONT
5h 40m1 stop
$144Frontier
Find Deal
Fri, Jul 11 - Mon, Jul 14
Frontier Logo
12:59 am - 10:04 amONT-IAH
7h 05m1 stop
Frontier Logo
5:09 pm - 6:27 pmIAH-ONT
3h 18mnonstop
$152Frontier
Find Deal
Fri, Jul 25 - Sun, Jul 27
Frontier Logo
12:59 am - 10:04 amONT-IAH
7h 05m1 stop
Frontier Logo
5:12 pm - 8:52 pmIAH-ONT
5h 40m1 stop
$156Frontier
Find Deal
Expert advice

Expert advice for your flight from Ontario to George Bush Intcntl

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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 priority boarding and extra legroom, just $20 more than Economy.

Read more about Frontierby Stefanie Waldek
United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy seats.


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

Airports
ONT

ONT offers ample parking options and streamlined security, making it a stress-free departure point for travelers heading to Houston.

Read more about ONTby Jennifer Simonson
IAH

For arrivals at IAH, rideshare apps like Uber and Lyft are convenient, with pickup points at Terminals A, B, and C.

Read more about IAHby John Walton
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
Useful Info

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

Get data-powered insights and trends into flights from Ontario to George Bush Intcntl 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 Ontario to Houston George Bush Airport?

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

For Ontario to Houston George Bush Airport, Friday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Houston George Bush Airport back to Ontario, the best deals are generally found on Thursday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Houston George Bush Intcntl Airport, 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 Ontario to Houston George Bush Intcntl Airport is September, where tickets cost $178 (return) on average. On the other hand, the most expensive months are February and December, where the average cost of round-trip tickets is $389 and $322 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Houston George Bush Intcntl Airport, 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 Ontario to Houston George Bush Intcntl Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonFebruary
High seasonOctober
Cheapest flight$59
Best time to beat the crowds but there is an average 60% increase in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Ontario to Houston George Bush Airport

When to book flights from Ontario to George Bush Intcntl

Are your dates flexible? Find out the best times to travel from Ontario to George Bush Intcntl 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 Ontario to Houston George Bush Airport flights

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

    In the last 3 days, the lowest price for a flight from Ontario to Houston George Bush Intcntl Airport was $59 for a one-way ticket and $128 for a round-trip.

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

    No

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

    Ontario airport is called Ontario and the only airport in Houston George Bush Airport is Houston George Bush Intcntl.

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

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

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

    The Boeing 737-900 is the aircraft model that flies most regularly on the Ontario to Houston George Bush Airport flight route.

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

    Star Alliance is the only airline alliance operating flights between Ontario and Houston George Bush Airport.

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

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Houston are United Airlines and American Airlines. With an average price for the route of $416 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 $370 and an overall rating of 7.2.

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

    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 Ontario to Houston George Bush Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston George Bush Airport from Ontario 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 Ontario to Houston George Bush Airport?

    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 Houston George Bush Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and IAH 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 Ontario to Houston George Bush Airport?

    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 Houston George Bush Airport from Ontario 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 Ontario to Houston George Bush Intcntl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $139 or less one-way and $291 or less round-trip.

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

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

Direct departures

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, Frontier

United Airlines, Frontier

Friday

Frontier, United Airlines

Frontier, United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines, Frontier

United Airlines, Frontier

See more direct flights

Direct returns

Houston George Bush Intcntl to Ontario

Monday

Frontier, Lufthansa, United Airlines

Frontier, Lufthansa, +1 more

Tuesday

Lufthansa, United Airlines

Lufthansa, United Airlines

Wednesday

Lufthansa, United Airlines

Lufthansa, United Airlines

Thursday

Lufthansa, United Airlines, Frontier

Lufthansa, United Airlines, +1 more

Friday

Frontier, Lufthansa, United Airlines

Frontier, Lufthansa, +1 more

Saturday

Lufthansa, United Airlines

Lufthansa, United Airlines

Sunday

Lufthansa, United Airlines, Frontier

Lufthansa, United Airlines, +1 more

See more direct flights

Reviews of the top 4 airlines serving from Ontario to George Bush Intcntl

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Houston. 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 Ontario to George Bush Intcntl? 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 8852 reviews
8.1Crew
7.7Boarding
6.6Food
7.0Entertainment
7.3Comfort
Airline reviews

Flight was on time. Boarding was smooth. Flight attendants were friendly and efficient. Entertainment system was broken for all passengers on the left side of the aisle. I would prefer if meals were not served on red eye flights. No one should need to dine at that time and it is disturbing for those passengers trying to sleep.

8.0 ExcellentAnonymous, Jun 2025UIO - IAH
Read more United Airlines reviews

Flight was on time. Boarding was smooth. Flight attendants were friendly and efficient. Entertainment system was broken for all passengers on the left side of the aisle. I would prefer if meals were not served on red eye flights. No one should need to dine at that time and it is disturbing for those passengers trying to sleep.

Gate agent did not hold flight for connection, provided no assistance to get new flight

I always appreciate when everything is on time! In this flight you have a short connection and it could be stressful , but is was easy and fast. They even ask people to wait so the ones that have a short connection could leave before. It was the fist time that something like this happened.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My suitcase was destroyed. The top part where the handle is is completed broken. And unusable now.

Since when do I have to pay for my checked bag? I have a United Explorer mileage plus silver card and I was charged for my checked bags. This also is an international flight. So I would like an explanation to be clear before I choose an airline please?

Michael, our FA was very attentive, even finding me a chocolate brownie from economy class when the dessert selections were all dairy based. ( intolerant, not allergic so don’t usually need to order dairy free)

I had a bad experience with the security at IAH and felt like a sardine on all 4 legs of my journey.

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

The flight delay in Dallas created a domino effect that impacted all connecting flights, leading to an increase in the number of connections. As a result, I missed my flight from Casablanca to Marrakech due to the tight turnaround when landing in Casablanca. CMN Airport was understaffed; only one employee was available to assist passengers while others just stood by and watched. It was an extremely frustrating situation. Many passengers were crying and banging their hands on the counter while talking to customer service representative Allabough. Unfortunately, Allabough couldn’t change my flight in the system. At the same time, I was on the phone with an American Airlines customer service representative named Solomon, who said he couldn’t make the change either. So, I decided to take an ONYA Voyages train from Casablanca to Marrakech to reach my destination on Friday, June 26. It turned out to be an unpredictable trip.

Pretty bad gate mgmt upon arrival. No open gates and we had to wait at midnight. Shouldn’t be a surprise that an aircraft is coming in.

Comfortable plane ride however on delays disappointment no real details as to why the delays when other flights are leaving the airport

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

It’s a great flight. Service is good. Staff is awesome.

We had an almost 7 hour flight delay. We left the gate twice and taxi-ed and then returned the gate twice. Finally we got a new flight crew (our third one) and then left the gate to the final time before departing at 6:45pm (original flight time was 12pm). Out of Newark.

First off, i received an e-mail to allow me to check in for our flight. I folllowed the link, when it came to the seat selection, I was unable to select any "free" seats ( meaning without any additional charge) because everything was " unavailable". My Husband and I were ttavelling with our 3 children hence, i wanted to be assured that we were all seated next to each other. I tried 3 times and everytime I click the selection it said " error loading". What the system wants is for me to buy the seats ( anywhere from $25 to $50 dollars each passenger) like I did on our flight bound to L.A. I called customer service and the guy was unhelpful all he kept repeating was to come really early at the airport and we will be assigned seats there. Imagine my anxiety!!! Spirit says they are a budget airline but they are actually the opposite!! And just before our flight, the flight attendant KEPT announcing/ selling the seats that were not purchased for a cheaper price!! Like it was a bidding/ bargaining game! This was our first and last time to fly Spirit.

My flight got cancelled by Spirit airlines, it was bad experience to me

Spirit gets you there; it's no worse than any other aircraft, all things considered. (It's not like everyone else is such a hero). But - holy moses - do they nickel and dime you to absolutely every nickel - I was really expecting to have to pay to use the bathroom. And when the captain comes on with a 5 minute sales pitch about getting "points", that was like something on Bizarro world. Other than that, everyone else was professional and worked hard to get us from point A to point B. I'm not loving all the "self-service" stuff but there it is - just when the machines don't work you don't have anyone to talk to.

Easy boarding and good flight. Need to work on the beverage and snack situation

The staff was great, but because the 2nd lieutenant didn’t show up for the flight we all had to deboard and wait 2 1/2 hours for one to show up. Very disappointing the crew can’t get schedules confirmed which wouldn’t have caused this issue.

Flight was delayed a bit, but that was expected (and updated), so really not bad at all for the price. Could’ve used one less email asking me to upgrade my seat; otherwise no significant complaints

Easy boarding. Met expectations for a 2-3 hour flight. Early arrival at DFW caused a 39 minute delay on the tarmac in getting to our gate. 😏 overall, good flight.

My experience with Spirit went pretty much as expected. It's a no frills airline, and you get what you pay for. I don't require much, so I was grateful to have an inexpensive way to travel. It is sad to me that the gate agents and flight crew don't smile much or seem very friendly or helpful. They are competent and efficient, and that's really all I need.

It was fast but uncomfortable seats. Had to pay a bit extra not sure why? Maybe in selection of all my 4 tix together ? Just knew I had a balance before getting boarding pass online when departing from satx ? And flight was delayed..

The confirmation # CK8GNW and my name was not recognized/in Frontier system. I was able to check in on Frintier app so i went to the Frontier ticket agent, at time they told me that my name/ confirmation did not show up as a purchased ticket. I had to purchase a new ticket that cost $289.00 one way.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Worst airline experience. They were rude and kept changing our seats and/or giving our seats away so our family didn’t get to sit with each other. Almost everyone we dealt with at both airports with this airline was rude. The app kept giving us wrong information making things take longer. Dealing with them before TSA can take close to an hour…longer than I’ve ever had to deal with before. Never using this airline again.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

They changed the timing , first delayed by 4 hours then went back to 40 mins late, we had to run back to airport to not miss our flight. This is ridiculous

Early arrival. Great landing. Pilot updates. Too cold in plane.

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

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