$84+ Cheap flights from George Bush Intcntl (IAH) to Ontario (ONT)
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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — ONT
Oct 1 — Oct 81
Round-trip
1 adult, Economy
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Find cheap flights from George Bush Intcntl to Ontario 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 Houston George Bush Intcntl to Ontario are usually found in November or August, booked 20 days in advance, depart on a Tuesday or Friday and return on a Friday
Cheap flight deals from George Bush Intcntl to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from George Bush Intcntl to OntarioExplore the most affordable flight options available from George Bush Intcntl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 1, 2026.
Explore the most affordable flight options available from George Bush Intcntl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 1, 2026.
This Priceline deal was found by Cheapflights users on 9/1. 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.
Thu 10/14:20 pm -
Nonstop3h 28m
Mon 10/56:45 pm -
Nonstop3h 13m
Deal found 9/1![Frontier logo]()
$146
This Super.com deal was found by Cheapflights users on 8/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:20 pm -
Nonstop3h 28m
Mon 9/216:45 pm -
Nonstop3h 13m
Deal found 8/27![Frontier logo]()
$160
This CheapOair deal was found by Cheapflights users on 8/27. 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 9/254:20 pm -
Nonstop3h 28m
Thu 10/16:45 pm -
Nonstop3h 13m
Deal found 8/27![Frontier logo]()
$163
This CheapOair deal was found by Cheapflights users on 8/27. 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.
Thu 9/244:20 pm -
Nonstop3h 28m
Thu 10/16:45 pm -
Nonstop3h 13m
Deal found 8/27![Frontier logo]()
$167
This Booking.com deal was found by Cheapflights users on 8/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:20 pm -
Nonstop3h 28m
Fri 10/26:45 pm -
Nonstop3h 13m
Deal found 8/27![Frontier logo]()
$168
This Booking.com deal was found by Cheapflights users on 9/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:20 pm -
Nonstop3h 28m
Sat 10/310:04 am -
1 stop6h 21m
Deal found 9/1![Frontier logo]()
$171
This FlightHub deal was found by Cheapflights users on 8/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:25 am -
1 stop6h 05m
Mon 10/56:45 pm -
Nonstop3h 13m
Deal found 8/28![Frontier logo]()
$174
This Booking.com deal was found by Cheapflights users on 8/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:20 pm -
Nonstop3h 28m
Sat 9/1910:04 am -
1 stop17h 58m
Deal found 8/28![Frontier logo]()
$177
This CheapOair deal was found by Cheapflights users on 8/28. 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.
Thu 10/14:20 pm -
Nonstop3h 28m
Thu 10/81:38 pm -
1 stop23h 45m
Deal found 8/28![Frontier logo]()
$183
Best flights from George Bush Intcntl to OntarioDiscover carefully curated flight deals from George Bush Intcntl to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.
Discover carefully curated flight deals from George Bush Intcntl to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.
This Booking.com deal was found by Cheapflights users on 8/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:24 am -
1 stop6h 05m
Wed 10/2111:52 am -
1 stop7h 53m
Deal found 8/27![Frontier logo]()
$196
This Delta deal was found by Cheapflights users on 9/1. 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.
Sat 10/245:35 am -
2 stops12h 48m
Tue 10/276:00 am -
1 stop5h 29m
Deal found 9/1![Delta logo]()
$260
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Sat 10/176:05 pm -
1 stop6h 46m
Mon 11/26:00 am -
Nonstop3h 08m
Deal found 8/30![United Airlines logo]()
$307
This Gotogate deal was found by Cheapflights users on 8/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:24 am -
1 stop6h 05m
Wed 10/214:42 pm -
2 stops19h 10m
Deal found 8/27![Multiple Airlines logo]()
$390
This United Airlines deal was found by Cheapflights users on 8/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:30 pm -
Nonstop3h 29m
Wed 10/2111:10 am -
1 stop9h 01m
Deal found 8/27![United Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Fri 10/168:30 pm -
Nonstop3h 29m
Sat 10/246:00 am -
Nonstop3h 15m
Deal found 9/1![United Airlines logo]()
$336
This United Airlines deal was found by Cheapflights users on 8/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/258:30 pm -
Nonstop3h 29m
Sat 10/36:00 am -
Nonstop3h 15m
Deal found 8/27![United Airlines logo]()
$336
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Fri 12/412:40 pm -
1 stop9h 49m
Wed 12/95:45 am -
Nonstop3h 11m
Deal found 8/31![United Airlines logo]()
$373
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Sat 10/178:30 pm -
Nonstop3h 29m
Thu 10/226:00 am -
Nonstop3h 15m
Deal found 8/28![United Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 8/29. 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.
Mon 11/98:05 pm -
Nonstop3h 35m
Tue 11/106:00 am -
Nonstop3h 10m
Deal found 8/29![United Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 8/28. 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 10/148:30 pm -
Nonstop3h 29m
Sat 10/248:03 am -
1 stop8h 22m
Deal found 8/28![United Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Sat 10/178:30 pm -
Nonstop3h 29m
Sat 10/248:03 am -
1 stop8h 22m
Deal found 8/28![United Airlines logo]()
$393
Last-minute flights from George Bush Intcntl to OntarioDiscover last-minute flight deals from George Bush Intcntl to Ontario. Data last updated September 1, 2026 and is based on user searches.
Discover last-minute flight deals from George Bush Intcntl to Ontario. Data last updated September 1, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 8/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:20 pm -
Nonstop3h 28m
Sat 9/1910:04 am -
1 stop17h 58m
Deal found 8/28![Frontier logo]()
$177
This Super.com deal was found by Cheapflights users on 8/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:20 pm -
Nonstop3h 28m
Mon 9/216:45 pm -
Nonstop3h 13m
Deal found 8/27![Frontier logo]()
$160
This CheapOair deal was found by Cheapflights users on 8/27. 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.
Thu 9/244:20 pm -
Nonstop3h 28m
Thu 10/16:45 pm -
Nonstop3h 13m
Deal found 8/27![Frontier logo]()
$167
This CheapOair deal was found by Cheapflights users on 8/27. 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 9/254:20 pm -
Nonstop3h 28m
Thu 10/16:45 pm -
Nonstop3h 13m
Deal found 8/27![Frontier logo]()
$163
This Booking.com deal was found by Cheapflights users on 8/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:20 pm -
Nonstop3h 28m
Fri 10/26:45 pm -
Nonstop3h 13m
Deal found 8/27![Frontier logo]()
$168
This Priceline deal was found by Cheapflights users on 9/1. 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.
Thu 10/14:20 pm -
Nonstop3h 28m
Mon 10/56:45 pm -
Nonstop3h 13m
Deal found 9/1![Frontier logo]()
$146
This Booking.com deal was found by Cheapflights users on 9/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:20 pm -
Nonstop3h 28m
Sat 10/310:04 am -
1 stop6h 21m
Deal found 9/1![Frontier logo]()
$171
This CheapOair deal was found by Cheapflights users on 8/28. 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.
Thu 10/14:20 pm -
Nonstop3h 28m
Thu 10/81:38 pm -
1 stop23h 45m
Deal found 8/28![Frontier logo]()
$183
This FlightHub deal was found by Cheapflights users on 8/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:25 am -
1 stop6h 05m
Mon 10/56:45 pm -
Nonstop3h 13m
Deal found 8/28![Frontier logo]()
$174
One-way flights from George Bush Intcntl to OntarioSearch for one-way flight options from George Bush Intcntl to Ontario. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.
Search for one-way flight options from George Bush Intcntl to Ontario. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/28. 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.
Mon 9/284:20 pm -
Nonstop3h 28m
Deal found 8/28![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 8/28. 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.
Fri 9/254:20 pm -
Nonstop3h 28m
Deal found 8/28![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 9/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:20 am -
1 stop8h 02m
Deal found 9/1![Frontier logo]()
$97
This FlightHub deal was found by Cheapflights users on 9/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:20 pm -
Nonstop3h 28m
Deal found 9/1![Frontier logo]()
$98
This Jetabroad deal was found by Cheapflights users on 8/28. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:20 am -
1 stop5h 11m
Deal found 8/28![Frontier logo]()
$101
This Super.com deal was found by Cheapflights users on 8/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:40 pm -
1 stop13h 49m
Deal found 8/28![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 8/29. 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.
Thu 11/56:00 am -
1 stop7h 16m
Deal found 8/29![Frontier logo]()
$105
This Jetabroad deal was found by Cheapflights users on 8/28. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:20 pm -
Nonstop3h 28m
Deal found 8/28![Frontier logo]()
$107
This Super.com deal was found by Cheapflights users on 9/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:25 am -
1 stop6h 05m
Deal found 9/1![Frontier logo]()
$108
Find flight deals from George Bush Intcntl to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to Ontario (ONT). 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 September 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $146 (Priceline) |
One-way from | $84 (Booking.com) |
Popular in | April |
Cheapest in | November |
Average price | $195 |
Good round-trip deal | $161 or less |
Good one-way deal | $99 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from George Bush Intcntl to Ontario 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 7,457,451 searches. Data last updated September 1, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sat 10/17
6:24 am-10:29 am
1 stop6h 05m
Ontario
Wed 10/21
11:52 am-9:45 pm
1 stop7h 53m
$196
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sat 10/24
5:35 am-4:23 pm
2 stops12h 48m
Ontario
Tue 10/27
6:00 am-1:29 pm
1 stop5h 29m
$260
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sat 10/17
6:05 pm-10:51 pm
1 stop6h 46m
Ontario
Mon 11/2
6:00 am-11:08 am
Nonstop3h 08m
$307
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sat 10/17
8:30 pm-9:59 pm
Nonstop3h 29m
Ontario
Wed 10/21
11:10 am-10:11 pm
1 stop9h 01m
$335
Quickest round-trip
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Fri 10/16
8:30 pm-9:59 pm
Nonstop3h 29m
Ontario
Sat 10/24
6:00 am-11:15 am
Nonstop3h 15m
$336
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Fri 9/25
8:30 pm-9:59 pm
Nonstop3h 29m
Ontario
Sat 10/3
6:00 am-11:15 am
Nonstop3h 15m
$336
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Fri 12/4
12:40 pm-8:29 pm
1 stop9h 49m
Ontario
Wed 12/9
5:45 am-10:56 am
Nonstop3h 11m
$373
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sat 10/17
8:30 pm-9:59 pm
Nonstop3h 29m
Ontario
Thu 10/22
6:00 am-11:15 am
Nonstop3h 15m
$387
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Mon 11/9
8:05 pm-9:40 pm
Nonstop3h 35m
Ontario
Tue 11/10
6:00 am-11:10 am
Nonstop3h 10m
$387
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sat 10/17
6:24 am-10:29 am
1 stop6h 05m
Ontario
Wed 10/21
4:42 pm-1:52 pm
2 stops19h 10m
$390
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from George Bush Intcntl to Ontario
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 George Bush Intcntl to Ontario in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Houston George Bush Intcntl Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Houston George Bush Intcntl Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Houston George Bush Intcntl Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub 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 Houston George Bush Intcntl Airport-Ontario 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 George Bush Intcntl to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from George Bush Intcntl with our price prediction graph.
IAH-ONT
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 Houston George Bush Intcntl Airport to Ontario
How far ahead should I book a flight from Houston George Bush Intcntl Airport to Ontario?
The best time to book flights from Houston George Bush Intcntl Airport to Ontario is 19 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 Houston George Bush Intcntl Airport to Ontario?
Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Ontario (average of $133). Flying from Houston George Bush Intcntl Airport to Ontario in April is currently the most expensive (average of $358). 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 IAH to ONT?
Find hourly flight availability from George Bush Intcntl to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 1, 2026.
A simple way to save on the total cost of your ticket is to fly from Houston George Bush Intcntl Airport to Ontario at noon. If you’re flexible enough to do this you can expect to save up to 36% on your trip compared to booking a flight in the evening.
What is the cheapest day to fly from Houston George Bush Intcntl Airport to Ontario?
Use this chart to determine the cheapest time to fly round-trip from George Bush Intcntl to Ontario. Price data was last updated on August 29, 2026.
Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to Ontario flight should consider departing on Tuesday mornings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The best insider tips for Houston George Bush Intcntl Airport to Ontario flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston George Bush Intcntl Airport to Ontario trip
Our travel experts
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated September 1, 2026.
Peruse reviews from past customers who have flown with United Airlines,American Airlines, andFrontier from Houston George Bush Intcntl Airport to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Food
6.7
Overall
7.4
Crew
8.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Entertainment
7.1
Food
6.7
Overall
7.4
Crew
8.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Entertainment
7.1
Food
6.7
Overall
7.4
Crew
8.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Entertainment
7.1
Food
6.7
Overall
7.4
Crew
8.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Related info for your journey
Find useful and relevant information for your journey from George Bush Intcntl to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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George Bush Intcntl and Ontario flights
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Top 3 airlines flying from George Bush Intcntl to Ontario
Discover the top 3 airlines that operate flights from George Bush Intcntl to Ontario. 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 7,457,451 searches. Data last updated September 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$69 | Average$194 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$195 | Average$342 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$346 | Average$406 | FlexibilityNo cancel fee | On-time71% |