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George Bush Intcntl

$66+ Cheap flights from Ontario (ONT) to George Bush Intcntl (IAH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IAH
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Find cheap flights from Ontario to George Bush Intcntl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Ontario to Houston George Bush Intcntl are usually found in March or April, booked 86 days in advance, depart on a Friday or Monday and return on a Tuesday

Cheap flight deals from Ontario to George Bush Intcntl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to George Bush Intcntl (IAH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 27, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$110
(Kiwi.com)

One-way from

$66
(Frontier)

Popular in

February

Cheapest in

March

Average price

$207

Good round-trip deal

$229 or less

Good one-way deal

$133 or less
Provider with most accurate pricing for Ontario-Houston George Bush Intcntl flight deals.
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Provider most trusted by Cheapflights users for Ontario-Houston George Bush Intcntl flights.
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From Ontario to Houston George Bush Intcntl
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One-way flight from Ontario to Houston George Bush Intcntl
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Highest demand for flights based on searches. 2% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Ontario to Houston George Bush Intcntl.
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Price to beat on a one-way flight from Ontario to Houston George Bush Intcntl.
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Find flight deals from Ontario to George Bush Intcntl

Cheapest flights from Ontario to George Bush Intcntl
Explore the most affordable flight options available from Ontario to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/72:59 pmONT - IAH
Nonstop3h 22mFrontier
Wed 12/243:48 pmIAH - ONT
Nonstop3h 42mFrontier
Deal found 10/25$110
This Frontier deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/161:46 pmONT - IAH
Nonstop3h 25mFrontier
Mon 11/176:00 amIAH - ONT
1 stop7h 10mFrontier
Deal found 10/27$112
This CheapOair deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/82:59 pmONT - IAH
Nonstop3h 22mFrontier
Fri 12/122:51 pmIAH - ONT
Nonstop3h 42mFrontier
Deal found 10/26$116
This Frontier deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/82:59 pmONT - IAH
Nonstop3h 22mFrontier
Sun 12/142:51 pmIAH - ONT
Nonstop3h 42mFrontier
Deal found 10/26$118
This CheapOair deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/101:46 pmONT - IAH
Nonstop3h 25mFrontier
Wed 11/122:09 pmIAH - ONT
1 stop23h 01mFrontier
Deal found 10/25$119
This Frontier deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/72:59 pmONT - IAH
Nonstop3h 22mFrontier
Fri 12/263:48 pmIAH - ONT
Nonstop3h 42mFrontier
Deal found 10/26$121
This CheapOair deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/52:05 pmONT - IAH
Nonstop3h 22mFrontier
Mon 12/82:51 pmIAH - ONT
Nonstop3h 42mFrontier
Deal found 10/27$122
This Frontier deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:05 pmONT - IAH
Nonstop3h 22mFrontier
Wed 12/243:48 pmIAH - ONT
Nonstop3h 42mFrontier
Deal found 10/26$123
This Priceline deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:00 amONT - IAH
1 stop8h 28mFrontier
Sun 11/165:23 pmIAH - ONT
Nonstop3h 26mFrontier
Deal found 10/27$124
This Frontier deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/118:45 amONT - IAH
1 stop11h 07mFrontier
Wed 11/192:09 pmIAH - ONT
1 stop9h 18mFrontier
Deal found 10/27$130

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to George Bush Intcntl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 27, 2025.
Use the filters below to find and compare flights from Ontario to Houston George Bush Intcntl Airport that are best for you.

Fly from

Ontario

Fly to

George Bush Intcntl

Route

Depart

Return

Price

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Sat 12/6

4:49 pm-8:51 am

2 stops14h 02m

Houston George Bush Intcntl

Mon 12/8

7:15 pm-11:58 pm

1 stop6h 43m

$222

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Mon 11/10

10:25 pm-8:43 am

1 stop8h 18m

Houston George Bush Intcntl

Mon 11/17

7:15 pm-11:52 pm

1 stop6h 37m

$240

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 11/14

1:20 pm-9:38 pm

1 stop6h 18m

Houston George Bush Intcntl

Mon 11/17

7:15 pm-11:52 pm

1 stop6h 37m

$240

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 12/12

6:00 am-11:06 am

Nonstop3h 06m

Houston George Bush Intcntl

Thu 12/25

8:10 pm-9:52 pm

Nonstop3h 42m

$309

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 12/12

10:25 pm-10:53 am

1 stop10h 28m

Houston George Bush Intcntl

Sun 12/21

7:40 pm-11:54 pm

1 stop6h 14m

$323

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Wed 12/10

6:00 am-11:06 am

Nonstop3h 06m

Houston George Bush Intcntl

Wed 12/17

8:18 pm-9:49 pm

Nonstop3h 31m

$325

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Wed 12/10

7:10 am-4:55 pm

1 stop7h 45m

Houston George Bush Intcntl

Wed 12/24

5:57 pm-11:59 pm

1 stop8h 02m

$326

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Tue 12/9

12:13 pm-11:59 pm

1 stop9h 46m

Houston George Bush Intcntl

Thu 12/18

5:57 pm-11:59 pm

1 stop8h 02m

$327

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 12/11

7:10 am-4:55 pm

1 stop7h 45m

Houston George Bush Intcntl

Thu 12/18

5:57 pm-11:59 pm

1 stop8h 02m

$327

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 1/16

3:26 pm-8:45 pm

Nonstop3h 19m

Houston George Bush Intcntl

Mon 1/19

2:47 pm-4:36 pm

Nonstop3h 49m

$330

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 23 results
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Compare providers for flights from Ontario to George Bush Intcntl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to George Bush Intcntl in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Houston George Bush Intcntl Airport flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Ontario-Houston George Bush Intcntl Airport flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Ontario-Houston George Bush Intcntl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Houston George Bush Intcntl Airport flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Houston George Bush Intcntl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Houston George Bush Intcntl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to George Bush Intcntl. Price data was last updated on October 24, 2025.

The best time to book flights from Ontario to Houston George Bush Intcntl Airport is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Ontario to Houston George Bush Intcntl Airport?

Currently, February is the cheapest month in which you can book a flight from Ontario to Houston George Bush Intcntl Airport (average of $57). Flying from Ontario to Houston George Bush Intcntl Airport in June is currently the most expensive (average of $102). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to IAH?

Find hourly flight availability from Ontario to George Bush Intcntl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

When flying from Ontario to Houston George Bush Intcntl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 63% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Ontario to George Bush Intcntl. Price data was last updated on October 26, 2025.

Travelers seeking maximum savings on their Ontario to Houston George Bush Intcntl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Ontario to Houston George Bush Intcntl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-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.
Cheapflights partnered with top experts to bring you the best recommendations for your Ontario to Houston George Bush Intcntl Airport trip
Airlines
Frontier

Frontier's UpFront Plus offers a guaranteed empty middle seat for extra comfort.


Early check-in can help secure your place onboard due to frequent overbooking.

Read more about Frontierby Marisa Garcia
United Airlines

United's Economy Plus offers extra legroom towards the front of the economy cabin.


United's Polaris Lounges offer showers, napping areas, and dining options.

Read more about United Airlinesby Harriet Baskas
Airports
ONT

ONT offers a smooth security process with less congestion than LAX, making it ideal for quick weekday business departures.

Read more about ONTby Bill Fink
IAH

For a quick trip to downtown Houston, Uber or Lyft is recommended from IAH, especially from Terminals A, B, and C.

Read more about IAHby Evie Carrick
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Bill Fink

Bill Fink

Expert on ONT

Bill Fink

Bill Fink

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Read more

Reviews of airlines servicing George Bush Intcntl

Get insights into the airlines that provide service to George Bush Intcntl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to George Bush Intcntl. Reviews last updated October 27, 2025.
Read through reviews of airlines operating flights from Ontario to Houston George Bush Intcntl Airport, such as United Airlines, American Airlines, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,999 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
United Airlines
7.4
Good
8,999 reviews
United Airlines
7.4
Good
8,999 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
American Airlines
7.2
Good
11,031 reviews
United Airlines
7.4
Good
8,999 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
Frontier
5.8
Fair
3,123 reviews
United Airlines
7.4
Good
8,999 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours

Related info for your journey

Find useful and relevant information for your journey from Ontario to George Bush Intcntl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Houston George Bush Intcntl?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Houston George Bush Intcntl from Ontario. Booking flights from Ontario (ONT) to Houston George Bush Intcntl should be relatively easy as there are 0 daily outbound flights to Houston George Bush Intcntl from 3 different airlines.

  • How long is the flight from Ontario to Houston George Bush Intcntl Airport?

    Departing from Ontario to Houston George Bush Intcntl Airport will take you 3h 06m. The distance from Ontario to Houston George Bush Intcntl Airport is about 1330 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Ontario to Houston George Bush Intcntl Airport round-trip?

    Cheapflights users have booked flights from Ontario to Houston George Bush Intcntl Airport round-trip from $84. Other airlines that can offer you cheap pricing are American Airlines, from $188, and United Airlines, from $189. Users have found that Frontier is 64% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Ontario to Houston George Bush Intcntl Airport one-way?

    The cheapest airlines for a one-way flight from Ontario to Houston George Bush Intcntl Airport are Frontier ($66), Delta ($109), and United Airlines ($163).

  • What are the cheapest flights from Ontario to Houston George Bush Intcntl Airport?

    Looking at all options, your cheapest flight can be booked for $57. While the most popular route (Ontario - Houston George Bush Intcntl) can be booked for $81 on average, our data indicates $667 when flying from Ontario to Houston George Bush Intcntl Airport.

  • Can I find deals for flights from Ontario to George Bush Intcntl that include hotel bookings?

    Yes. In addition to deals on Ontario to George Bush Intcntl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to George Bush Intcntl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to George Bush Intcntl.

  • Can I find deals for business class flights from Ontario to George Bush Intcntl?

    Yes. Cheapflights offers flight deals from Ontario to George Bush Intcntl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, February is the cheapest month in which you can book a flight from Ontario to Houston George Bush Intcntl Airport (average of $57). Flying from Ontario to Houston George Bush Intcntl Airport in June is currently the most expensive (average of $102). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Montgomery
Katy
The Woodlands
Jersey Village
Spring
Humble
Conroe
Tomball
Cypress

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Top 3 airlines flying from Ontario to George Bush Intcntl

Discover the top 3 airlines that operate flights from Ontario to George Bush Intcntl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$186FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$188Average$361FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$385FlexibilityNo cancel feeOn-time69%

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