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.
$69+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IAH
Jun 10 — Jun 171
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 August or September, booked 41 days in advance, depart on a Friday or Wednesday and return on a Thursday
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 June 5, 2025.
Round-trip from | $138 (Frontier) |
|---|---|
One-way from | $69 (Frontier) |
Popular in | February |
Cheapest in | August |
Average price | $252 |
Good round-trip deal | $231 or less |
Good one-way deal | $86 or less |
Find flight deals from Ontario to George Bush Intcntl
Cheapest flights from Ontario to George Bush IntcntlExplore 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 June 5, 2025.
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 June 5, 2025.
This Frontier deal was found by Cheapflights users on 6/5. 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.
Sat 9/63:54 pmONT - IAH
Nonstop3h 24mFrontier
Sat 9/1310:08 pmIAH - ONT
Nonstop3h 24mFrontier
Deal found 6/5![Frontier logo]()
$138
This American Airlines deal was found by Cheapflights users on 6/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:22 pmONT - IAH
2 stops7h 53mAmerican Airlines
Tue 9/26:08 amIAH - ONT
1 stop7h 44mAmerican Airlines
Deal found 6/4![American Airlines logo]()
$188
This Hawaiian Airlines deal was found by Cheapflights users on 6/4. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/237:10 amONT - IAH
1 stop7h 44mHawaiian Airlines
Sat 8/235:59 pmIAH - ONT
1 stop7h 54mHawaiian Airlines
Deal found 6/4![Hawaiian Airlines logo]()
$201
This Alaska Airlines deal was found by Cheapflights users on 6/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/56:58 pmONT - IAH
1 stop9h 22mAlaska Airlines
Tue 8/126:00 amIAH - ONT
1 stop9h 26mAlaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$206
This United Airlines deal was found by Cheapflights users on 6/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/221:15 pmONT - IAH
1 stop5h 51mUnited Airlines
Sun 10/265:15 amIAH - ONT
1 stop9h 22mUnited Airlines
Deal found 6/4![United Airlines logo]()
$223
This Delta deal was found by Cheapflights users on 6/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/219:50 amONT - IAH
1 stop6h 13mDelta
Mon 8/253:57 pmIAH - ONT
2 stops9h 43mDelta
Deal found 6/4![Delta logo]()
$242
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 June 5, 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 9/6
3:54 pm-9:18 pm
Nonstop3h 24m
Houston George Bush Intcntl
Sat 9/13
10:08 pm-11:32 pm
Nonstop3h 24m
$138
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Wed 8/27
12:22 pm-10:15 pm
2 stops7h 53m
Houston George Bush Intcntl
Tue 9/2
6:08 am-11:52 am
1 stop7h 44m
$188
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Sat 8/23
7:10 am-4:54 pm
1 stop7h 44m
Houston George Bush Intcntl
Sat 8/23
5:59 pm-11:53 pm
1 stop7h 54m
$201
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Tue 8/5
6:58 pm-6:20 am
1 stop9h 22m
Houston George Bush Intcntl
Tue 8/12
6:00 am-1:26 pm
1 stop9h 26m
$206
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Wed 10/22
1:15 pm-9:06 pm
1 stop5h 51m
Houston George Bush Intcntl
Sun 10/26
5:15 am-12:37 pm
1 stop9h 22m
$223
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Thu 8/21
9:50 am-6:03 pm
1 stop6h 13m
Houston George Bush Intcntl
Mon 8/25
3:57 pm-11:40 pm
2 stops9h 43m
$242
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Sat 9/6
3:54 pm-9:18 pm
Nonstop3h 24m
$69
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Tue 8/26
6:04 am-11:13 am
Nonstop3h 09m
$82
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Wed 8/6
11:59 pm-9:16 am
1 stop7h 17m
$92
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Tue 9/23
11:39 am-12:06 am
1 stop10h 27m
$103
Showing 1-10 of 12 results
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
![United Airlines]()
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.
Airports
Our travel experts
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 May 23, 2025.
The best time to book flights from Ontario to Houston George Bush Intcntl Airport is 41 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, August is the cheapest month in which you can book a flight from Ontario to Houston George Bush Intcntl Airport (average of $241). Flying from Ontario to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). 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 June 5, 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 66% 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 June 1, 2025.
Travelers seeking maximum savings on their Ontario to Houston George Bush Intcntl Airport flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Ontario to Houston George Bush Intcntl Airport
Explore weekly flight availability from Ontario to George Bush Intcntl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 5, 2025.
The most flights from ONT to IAH are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
Rainfall in George Bush Intcntl by month
Plan your trip to George Bush Intcntl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Houston George Bush Intcntl Airport ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Houston George Bush Intcntl Airport when rainfall is around 3.2 in.
Temperature in George Bush Intcntl by month
Plan your trip to George Bush Intcntl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Houston George Bush Intcntl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).
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 June 5, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta and Hawaiian Airlines from Ontario to Houston by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.1
Comfort
7.9
Food
7.1
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Entertainment
7.1
Comfort
7.9
Food
7.1
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Entertainment
7.1
Comfort
7.9
Food
7.1
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Entertainment
7.1
Comfort
7.9
Food
7.1
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Entertainment
7.1
Comfort
7.9
Food
7.1
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Entertainment
7.1
Comfort
7.9
Food
7.1
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
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.
Traveling to a place near Ontario?
Book flights to Ontario if you plan to visit one of these locationsMontgomery
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Alternative routes for Ontario to George Bush Intcntl
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Ontario to George Bush Intcntl
Discover the top 5 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 June 5, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$82 | Average$174 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$86 | Average$173 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$188 | Average$389 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$198 | Average$414 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$267 | Average$427 | FlexibilityNo cancel fee | On-timeN/A |