$63+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — ONT
Sep 5 — Sep 121
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 February, booked 20 days in advance, depart on a Friday or Saturday 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 August 6, 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 August 6, 2026.
This Super.com deal was found by Cheapflights users on 8/3. 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.
Sun 8/306:10 am -
Nonstop3h 22m
Sun 9/69:33 am -
Nonstop3h 20m
Deal found 8/3![Frontier logo]()
$135
This Super.com deal was found by Cheapflights users on 8/3. 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.
Sun 9/134:20 pm -
Nonstop3h 28m
Sun 9/206:45 pm -
Nonstop3h 13m
Deal found 8/3![Frontier logo]()
$136
This Frontier deal was found by Cheapflights users on 8/6. 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 9/204:20 pm -
Nonstop3h 28m
Sun 9/276:45 pm -
Nonstop3h 13m
Deal found 8/6![Frontier logo]()
$138
This Super.com deal was found by Cheapflights users on 8/3. 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 10/301:05 pm -
Nonstop3h 32m
Sun 11/13:47 pm -
Nonstop3h 23m
Deal found 8/3![Frontier logo]()
$140
This Super.com deal was found by Cheapflights users on 8/2. 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 9/244:20 pm -
Nonstop3h 28m
Sun 9/276:45 pm -
Nonstop3h 13m
Deal found 8/2![Frontier logo]()
$141
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:55 pm -
2 stops14h 41m
Wed 9/210:59 am -
Nonstop3h 24m
Deal found 8/4![Frontier logo]()
$142
This Frontier deal was found by Cheapflights users on 8/2. 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.
Thu 10/14:20 pm -
Nonstop3h 28m
Sun 10/46:45 pm -
Nonstop3h 13m
Deal found 8/2![Frontier logo]()
$143
This Super.com deal was found by Cheapflights users on 8/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:38 pm -
Nonstop3h 23m
Fri 9/116:45 pm -
Nonstop3h 13m
Deal found 8/5![Frontier logo]()
$144
This Super.com deal was found by Cheapflights users on 8/2. 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 8/286:10 am -
Nonstop3h 22m
Mon 8/319:33 am -
Nonstop3h 20m
Deal found 8/2![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/66:10 am -
Nonstop3h 22m
Fri 9/116:15 am -
1 stop16h 28m
Deal found 8/2![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 8/2. 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 8/295:38 pm -
Nonstop3h 23m
Tue 9/110:59 am -
Nonstop3h 24m
Deal found 8/2![Frontier logo]()
$148
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 August 6, 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 August 6, 2026.
This Delta deal was found by Cheapflights users on 8/6. 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 9/511:28 am -
2 stops12h 55m
Sun 9/66:00 am -
1 stop5h 37m
Deal found 8/6![Delta logo]()
$260
This United Airlines deal was found by Cheapflights users on 8/6. 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 9/54:47 pm -
Nonstop3h 25m
Fri 9/116:00 am -
Nonstop3h 15m
Deal found 8/6![United Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 8/2. 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 10/17:00 am -
2 stops11h 35m
Thu 10/89:45 am -
1 stop5h 49m
Deal found 8/2![Delta logo]()
$282
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/242:19 pm -
2 stops10h 24m
Thu 10/299:45 am -
2 stops12h 08m
Deal found 8/5![Delta logo]()
$288
This United Airlines deal was found by Cheapflights users on 8/2. 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 10/108:30 pm -
Nonstop3h 29m
Sat 10/176:00 am -
Nonstop3h 15m
Deal found 8/2![United Airlines logo]()
$347
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Sun 10/188:30 pm -
Nonstop3h 29m
Sat 10/246:00 am -
Nonstop3h 15m
Deal found 8/4![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 8/3. 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 10/83:58 pm -
2 stops9h 57m
Tue 10/279:45 am -
1 stop5h 49m
Deal found 8/3![Delta logo]()
$330
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Tue 9/2912:40 pm -
1 stop7h 01m
Sat 10/36:00 am -
Nonstop3h 15m
Deal found 8/6![United Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 8/4. 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.
Sun 10/185:29 am -
1 stop7h 37m
Mon 10/261:24 pm -
1 stop6h 34m
Deal found 8/4![Delta logo]()
$373
Last-minute flights from George Bush Intcntl to OntarioDiscover last-minute flight deals from George Bush Intcntl to Ontario. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from George Bush Intcntl to Ontario. Data last updated August 6, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:38 pm -
Nonstop3h 23m
Fri 8/289:33 am -
Nonstop3h 20m
Deal found 8/1![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 8/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:38 pm -
Nonstop3h 23m
Thu 8/2710:49 am -
1 stop11h 51m
Deal found 8/1![Frontier logo]()
$149
This Super.com deal was found by Cheapflights users on 8/2. 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 8/286:10 am -
Nonstop3h 22m
Mon 8/319:33 am -
Nonstop3h 20m
Deal found 8/2![Frontier logo]()
$146
This Super.com deal was found by Cheapflights users on 8/3. 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.
Sun 8/306:10 am -
Nonstop3h 22m
Sun 9/69:33 am -
Nonstop3h 20m
Deal found 8/3![Frontier logo]()
$135
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:55 pm -
2 stops14h 41m
Wed 9/210:59 am -
Nonstop3h 24m
Deal found 8/4![Frontier logo]()
$142
This Super.com deal was found by Cheapflights users on 8/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:38 pm -
Nonstop3h 23m
Fri 9/116:45 pm -
Nonstop3h 13m
Deal found 8/5![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/66:10 am -
Nonstop3h 22m
Fri 9/116:15 am -
1 stop16h 28m
Deal found 8/2![Frontier logo]()
$147
This Booking.com deal was found by Cheapflights users on 8/2. 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 9/114:20 pm -
Nonstop3h 28m
Sun 9/136:45 pm -
Nonstop3h 13m
Deal found 8/2![Frontier logo]()
$143
This Super.com deal was found by Cheapflights users on 8/3. 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.
Sun 9/134:20 pm -
Nonstop3h 28m
Sun 9/206:45 pm -
Nonstop3h 13m
Deal found 8/3![Frontier logo]()
$136
This Frontier deal was found by Cheapflights users on 8/3. 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 9/184:20 pm -
Nonstop3h 28m
Sat 9/1911:45 am -
1 stop10h 58m
Deal found 8/3![Frontier logo]()
$150
This Super.com deal was found by Cheapflights users on 8/2. 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 9/244:20 pm -
Nonstop3h 28m
Sun 9/276:45 pm -
Nonstop3h 13m
Deal found 8/2![Frontier logo]()
$141
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 August 6, 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 August 6, 2026.
This Super.com deal was found by Cheapflights users on 8/2. 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 8/246:10 am -
Nonstop3h 22m
Deal found 8/2![Frontier logo]()
$63
This Booking.com deal was found by Cheapflights users on 8/2. 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.
Wed 8/265:38 pm -
Nonstop3h 23m
Deal found 8/2![Frontier logo]()
$64
This Super.com deal was found by Cheapflights users on 8/1. 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.
Sun 9/134:20 pm -
Nonstop3h 28m
Deal found 8/1![Frontier logo]()
$68
This Frontier deal was found by Cheapflights users on 8/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:20 pm -
Nonstop3h 28m
Deal found 8/1![Frontier logo]()
$69
This Super.com deal was found by Cheapflights users on 8/3. 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.
Sun 9/66:10 am -
Nonstop3h 22m
Deal found 8/3![Frontier logo]()
$72
This Frontier deal was found by Cheapflights users on 8/3. 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 9/55:38 pm -
Nonstop3h 23m
Deal found 8/3![Frontier logo]()
$73
This Frontier deal was found by Cheapflights users on 8/3. 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.
Thu 10/14:20 pm -
Nonstop3h 28m
Deal found 8/3![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:05 pm -
Nonstop3h 32m
Deal found 8/4![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:05 pm -
Nonstop3h 32m
Deal found 8/4![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 8/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:38 pm -
Nonstop3h 23m
Deal found 8/4![Frontier logo]()
$83
This Frontier deal was found by Cheapflights users on 8/2. 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 11/21:05 pm -
Nonstop3h 32m
Deal found 8/2![Frontier logo]()
$84
This Frontier deal was found by Cheapflights users on 8/2. 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 8/255:38 pm -
Nonstop3h 23m
Deal found 8/2![Frontier logo]()
$85
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 August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $135 (Super.com) |
One-way from | $63 (Super.com) |
Popular in | April |
Cheapest in | November |
Average price | $219 |
Good round-trip deal | $160 or less |
Good one-way deal | $125 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 2,558,603 searches. Data last updated August 6, 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 9/5
11:28 am-10:23 pm
2 stops12h 55m
Ontario
Sun 9/6
6:00 am-1:37 pm
1 stop5h 37m
$260
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Thu 10/1
7:00 am-4:35 pm
2 stops11h 35m
Ontario
Thu 10/8
9:45 am-5:34 pm
1 stop5h 49m
$282
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sat 10/24
2:19 pm-10:43 pm
2 stops10h 24m
Ontario
Thu 10/29
9:45 am-11:53 pm
2 stops12h 08m
$288
Quickest round-trip
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sat 9/5
4:47 pm-6:12 pm
Nonstop3h 25m
Ontario
Fri 9/11
6:00 am-11:15 am
Nonstop3h 15m
$327
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Thu 10/8
3:58 pm-11:55 pm
2 stops9h 57m
Ontario
Tue 10/27
9:45 am-5:34 pm
1 stop5h 49m
$330
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sat 10/10
8:30 pm-9:59 pm
Nonstop3h 29m
Ontario
Sat 10/17
6:00 am-11:15 am
Nonstop3h 15m
$347
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sun 10/18
8:30 pm-9:59 pm
Nonstop3h 29m
Ontario
Sat 10/24
6:00 am-11:15 am
Nonstop3h 15m
$353
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Tue 9/29
12:40 pm-5:41 pm
1 stop7h 01m
Ontario
Sat 10/3
6:00 am-11:15 am
Nonstop3h 15m
$357
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Sun 10/18
5:29 am-11:06 am
1 stop7h 37m
Ontario
Mon 10/26
1:24 pm-9:58 pm
1 stop6h 34m
$373
Cheapest one-way
HoustonOntario
IAH Houston George Bush Intcntl - ONT Ontario
IAHONT
Houston George Bush Intcntl
Mon 8/31
7:30 am-5:21 pm
2 stops11h 51m
$144
Showing 1-10 of 20 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 August.
| 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
Prices
Airlines
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 August 6, 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 37% 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 1, 2026.
Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to Ontario flight should consider departing on Thursday at noon 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
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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 August 6, 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
Comfort
7.3
Overall
7.4
Food
6.7
Boarding
7.7
Crew
8.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Entertainment
7.1
Comfort
7.3
Overall
7.4
Food
6.7
Boarding
7.7
Crew
8.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Entertainment
7.1
Comfort
7.3
Overall
7.4
Food
6.7
Boarding
7.7
Crew
8.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Entertainment
7.1
Comfort
7.3
Overall
7.4
Food
6.7
Boarding
7.7
Crew
8.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Related info for your journey
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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 2,558,603 searches. Data last updated August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$66 | Average$191 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$195 | Average$365 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$273 | Average$400 | FlexibilityNo cancel fee | On-time71% |