$54+ Cheap flights from Ontario (ONT) to Houston
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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HOU
Jun 8 — Jun 151
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Houston 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 are usually found in October or June, booked 51 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday
Cheap flight deals from Ontario to Houston
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Last-minute
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Cheapest flights from Ontario to HoustonExplore the most affordable flight options available from Ontario to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 9, 2026.
Explore the most affordable flight options available from Ontario to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 9, 2026.
This Super.com deal was found by Cheapflights users on 5/4. 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.
Fri 5/298:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Mon 6/85:30 am
IAH
- ONT
Nonstop3h 38m
Frontier
Deal found 5/4![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 5/6. 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.
Tue 7/75:43 pm
ONT
- IAH
Nonstop3h 22m
Frontier
Tue 7/144:27 pm
IAH
- ONT
Nonstop3h 22m
Frontier
Deal found 5/6![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 5/4. 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.
Fri 5/298:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Thu 6/45:30 am
IAH
- ONT
Nonstop3h 38m
Frontier
Deal found 5/4![Frontier logo]()
$149
This Super.com deal was found by Cheapflights users on 5/4. 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 5/128:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Thu 5/146:00 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/4![Frontier logo]()
$152
This Frontier deal was found by Cheapflights users on 5/4. 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.
Mon 5/118:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Thu 5/146:00 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/4![Frontier logo]()
$153
This Gotogate deal was found by Cheapflights users on 5/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Thu 5/285:40 pm
IAH
- ONT
1 stop18h 25m
Frontier
Deal found 5/4![Frontier logo]()
$154
This Super.com deal was found by Cheapflights users on 5/7. 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 6/18:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Sat 6/66:13 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/7![Frontier logo]()
$156
This Super.com deal was found by Cheapflights users on 5/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Sat 5/306:13 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/6![Frontier logo]()
$157
This Super.com deal was found by Cheapflights users on 5/4. 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.
Fri 5/158:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Wed 5/206:00 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/4![Frontier logo]()
$161
This Frontier deal was found by Cheapflights users on 5/4. 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.
Mon 5/118:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Tue 5/196:00 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/4![Frontier logo]()
$163
This Frontier deal was found by Cheapflights users on 5/4. 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.
Fri 6/58:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Sun 6/75:40 pm
IAH
- ONT
1 stop8h 09m
Frontier
Deal found 5/4![Frontier logo]()
$164
This Mytrip deal was found by Cheapflights users on 5/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/316:00 am
ONT
- IAH
1 stop26h 44m
Frontier
Sun 6/75:30 am
IAH
- ONT
Nonstop3h 38m
Frontier
Deal found 5/4![Frontier logo]()
$165
Best flights from Ontario to HoustonDiscover carefully curated flight deals from Ontario to Houston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 9, 2026.
Discover carefully curated flight deals from Ontario to Houston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 9, 2026.
This Southwest deal was found by Cheapflights users on 5/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:45 pm
ONT
- HOU
1 stop4h 45m
Southwest
Tue 9/89:40 am
HOU
- ONT
1 stop6h 25m
Southwest
Deal found 5/5![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 5/6. 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.
Thu 8/139:43 am
ONT
- IAH
2 stops12h 09m
Delta
Mon 8/172:27 pm
IAH
- ONT
2 stops11h 07m
Delta
Deal found 5/6![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 5/8. 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 9/235:45 am
ONT
- IAH
Nonstop3h 14m
United Airlines
Wed 10/148:30 pm
IAH
- ONT
Nonstop3h 28m
United Airlines
Deal found 5/8![United Airlines logo]()
$367
This Alaska Airlines deal was found by Cheapflights users on 5/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 am
ONT
- IAH
1 stop9h 15m
Alaska Airlines
Mon 10/192:52 pm
IAH
- ONT
1 stop10h 50m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/13:00 pm
ONT
- HOU
1 stop7h 05m
Southwest
Wed 6/36:30 am
HOU
- ONT
1 stop5h 20m
Southwest
Deal found 5/6![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 5/6. 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.
Thu 8/139:43 am
ONT
- HOU
2 stops11h 03m
Delta
Mon 8/171:13 pm
HOU
- ONT
2 stops12h 21m
Delta
Deal found 5/6![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 5/4. 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 10/146:00 am
ONT
- IAH
Nonstop3h 14m
United Airlines
Tue 11/38:00 pm
IAH
- ONT
Nonstop3h 21m
United Airlines
Deal found 5/4![United Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:30 am
ONT
- HOU
2 stops6h 30m
Southwest
Wed 8/59:40 am
HOU
- ONT
2 stops6h 25m
Southwest
Deal found 5/6![Southwest logo]()
$357
This Delta deal was found by Cheapflights users on 5/4. 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.
Fri 5/2910:00 pm
ONT
- HOU
1 stop9h 32m
Delta
Tue 6/21:06 pm
HOU
- ONT
1 stop10h 42m
Delta
Deal found 5/4![Delta logo]()
$358
This United Airlines deal was found by Cheapflights users on 5/8. 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 6/55:45 am
ONT
- IAH
Nonstop3h 19m
United Airlines
Tue 6/98:31 pm
IAH
- ONT
Nonstop3h 24m
United Airlines
Deal found 5/8![United Airlines logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 5/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 am
ONT
- IAH
1 stop9h 15m
Alaska Airlines
Mon 10/196:15 pm
IAH
- ONT
1 stop7h 38m
Alaska Airlines
Deal found 5/5![Alaska Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 5/8. 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.
Wed 7/16:00 am
ONT
- IAH
1 stop5h 28m
Delta
Sun 7/57:01 pm
IAH
- ONT
1 stop6h 48m
Delta
Deal found 5/8![Delta logo]()
$373
This Southwest deal was found by Cheapflights users on 5/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/141:00 pm
ONT
- HOU
1 stop6h 55m
Southwest
Tue 11/38:35 pm
HOU
- ONT
Nonstop3h 20m
Southwest
Deal found 5/4![Southwest logo]()
$387
This United Airlines deal was found by Cheapflights users on 5/8. 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 6/15:45 am
ONT
- IAH
Nonstop3h 19m
United Airlines
Thu 6/188:31 pm
IAH
- ONT
Nonstop3h 24m
United Airlines
Deal found 5/8![United Airlines logo]()
$422
This Delta deal was found by Cheapflights users on 5/4. 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.
Wed 10/141:00 pm
ONT
- IAH
1 stop6h 36m
Delta
Tue 11/36:30 am
IAH
- ONT
2 stops11h 42m
Delta
Deal found 5/4![Delta logo]()
$402
This Southwest deal was found by Cheapflights users on 5/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/208:05 am
ONT
- HOU
2 stops8h 25m
Southwest
Wed 7/112:50 pm
HOU
- ONT
2 stops6h 15m
Southwest
Deal found 5/7![Southwest logo]()
$412
This Delta deal was found by Cheapflights users on 5/5. 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 6/271:00 pm
ONT
- IAH
1 stop6h 52m
Delta
Tue 6/307:35 am
IAH
- ONT
2 stops11h 44m
Delta
Deal found 5/5![Delta logo]()
$402
This Delta deal was found by Cheapflights users on 5/4. 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.
Wed 10/1410:59 pm
ONT
- HOU
1 stop8h 27m
Delta
Tue 11/31:00 pm
HOU
- ONT
2 stops12h 48m
Delta
Deal found 5/4![Delta logo]()
$402
Last-minute flights from Ontario to HoustonDiscover last-minute flight deals from Ontario to Houston. Data last updated May 9, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Houston. Data last updated May 9, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 5/4. 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.
Mon 5/118:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Thu 5/146:00 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/4![Frontier logo]()
$153
This Frontier deal was found by Cheapflights users on 5/4. 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.
Mon 5/118:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Tue 5/196:00 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/4![Frontier logo]()
$163
This Super.com deal was found by Cheapflights users on 5/4. 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 5/128:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Thu 5/146:00 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/4![Frontier logo]()
$152
This Super.com deal was found by Cheapflights users on 5/4. 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.
Fri 5/158:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Wed 5/206:00 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/4![Frontier logo]()
$161
This Gotogate deal was found by Cheapflights users on 5/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Thu 5/285:40 pm
IAH
- ONT
1 stop18h 25m
Frontier
Deal found 5/4![Frontier logo]()
$154
This Frontier deal was found by Cheapflights users on 5/4. 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.
Thu 5/288:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Sat 5/306:13 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/4![Frontier logo]()
$148
This Super.com deal was found by Cheapflights users on 5/4. 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.
Fri 5/298:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Mon 6/85:30 am
IAH
- ONT
Nonstop3h 38m
Frontier
Deal found 5/4![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 5/4. 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.
Fri 5/298:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Thu 6/45:30 am
IAH
- ONT
Nonstop3h 38m
Frontier
Deal found 5/4![Frontier logo]()
$149
This Mytrip deal was found by Cheapflights users on 5/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/316:00 am
ONT
- IAH
1 stop26h 44m
Frontier
Sun 6/75:30 am
IAH
- ONT
Nonstop3h 38m
Frontier
Deal found 5/4![Frontier logo]()
$165
This Super.com deal was found by Cheapflights users on 5/7. 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 6/18:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Sat 6/66:13 am
IAH
- ONT
Nonstop3h 35m
Frontier
Deal found 5/7![Frontier logo]()
$156
This Frontier deal was found by Cheapflights users on 5/4. 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.
Fri 6/58:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Sun 6/75:40 pm
IAH
- ONT
1 stop8h 09m
Frontier
Deal found 5/4![Frontier logo]()
$164
This Southwest deal was found by Cheapflights users on 5/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/94:10 pm
ONT
- HOU
1 stop6h 15m
Southwest
Tue 6/169:25 pm
HOU
- ONT
Nonstop3h 10m
Southwest
Deal found 5/4![Southwest logo]()
$267
One-way flights from Ontario to HoustonSearch for one-way flight options from Ontario to Houston. Find affordable one-way fares based on user searches. Data last updated May 9, 2026.
Search for one-way flight options from Ontario to Houston. Find affordable one-way fares based on user searches. Data last updated May 9, 2026.
This Priceline deal was found by Cheapflights users on 5/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Deal found 5/4![Frontier logo]()
$54
This Super.com deal was found by Cheapflights users on 5/4. 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.
Fri 6/58:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Deal found 5/4![Frontier logo]()
$58
This Super.com deal was found by Cheapflights users on 5/4. 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.
Wed 5/278:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Deal found 5/4![Frontier logo]()
$59
This CheapOair deal was found by Cheapflights users on 5/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Deal found 5/5![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/24:39 pm
ONT
- IAH
1 stop17h 54m
Frontier
Deal found 5/6![Frontier logo]()
$65
This Super.com deal was found by Cheapflights users on 5/4. 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.
Thu 5/288:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Deal found 5/4![Frontier logo]()
$73
This Frontier deal was found by Cheapflights users on 5/5. 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.
Mon 6/18:06 pm
ONT
- IAH
Nonstop3h 19m
Frontier
Deal found 5/5![Frontier logo]()
$79
This Frontier deal was found by Cheapflights users on 5/7. 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 5/305:59 pm
ONT
- IAH
Nonstop3h 20m
Frontier
Deal found 5/7![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Wed 7/295:43 pm
ONT
- IAH
Nonstop3h 22m
Frontier
Deal found 5/7![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/264:39 pm
ONT
- HOU
2 stops40h 20m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/24:39 pm
ONT
- HOU
2 stops40h 42m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$143
This Delta deal was found by Cheapflights users on 5/5. 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.
Tue 5/2612:07 pm
ONT
- HOU
1 stop8h 19m
Delta
Deal found 5/5![Delta logo]()
$149
Find flight deals from Ontario to Houston
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Houston (HO1). 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 May 9, 2026.
Round-trip from | $147 (Super.com) |
|---|---|
One-way from | $54 (Priceline) |
Popular in | March |
Cheapest in | October |
Average price | $252 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Houston 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 May 9, 2026.
Use the filters below to find and compare flights from Ontario to Houston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioHouston
ONT - HOU
ONTHOU
Ontario
Thu 8/20
5:45 pm-12:30 am
1 stop4h 45m
Houston Hobby
Tue 9/8
9:40 am-2:05 pm
1 stop6h 25m
$297
OntarioHouston
ONT - HOU
ONTHOU
Ontario
Mon 6/1
3:00 pm-12:05 am
1 stop7h 05m
Houston Hobby
Wed 6/3
6:30 am-9:50 am
1 stop5h 20m
$302
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Thu 8/13
9:43 am-11:52 pm
2 stops12h 09m
Houston George Bush Intcntl
Mon 8/17
2:27 pm-11:34 pm
2 stops11h 07m
$317
OntarioHouston
ONT - HOU
ONTHOU
Ontario
Thu 8/13
9:43 am-10:46 pm
2 stops11h 03m
Houston Hobby
Mon 8/17
1:13 pm-11:34 pm
2 stops12h 21m
$317
OntarioHouston
ONT - HOU
ONTHOU
Ontario
Sat 8/1
5:30 am-2:00 pm
2 stops6h 30m
Houston Hobby
Wed 8/5
9:40 am-2:05 pm
2 stops6h 25m
$357
OntarioHouston
ONT - HOU
ONTHOU
Ontario
Fri 5/29
10:00 pm-9:32 am
1 stop9h 32m
Houston Hobby
Tue 6/2
1:06 pm-9:48 pm
1 stop10h 42m
$358
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Wed 9/23
5:45 am-10:59 am
Nonstop3h 14m
Houston George Bush Intcntl
Wed 10/14
8:30 pm-9:58 pm
Nonstop3h 28m
$367
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Thu 10/15
6:00 am-5:15 pm
1 stop9h 15m
Houston George Bush Intcntl
Mon 10/19
2:52 pm-11:42 pm
1 stop10h 50m
$372
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Wed 7/1
6:00 am-1:28 pm
1 stop5h 28m
Houston George Bush Intcntl
Sun 7/5
7:01 pm-11:49 pm
1 stop6h 48m
$373
Quickest round-trip
OntarioHouston
ONT - IAH
ONTIAH
Ontario
Wed 10/14
6:00 am-11:14 am
Nonstop3h 14m
Houston George Bush Intcntl
Tue 11/3
8:00 pm-9:21 pm
Nonstop3h 21m
$377
Showing 1-10 of 36 resultsSorted by cheapest first
Best time to book a flight from Ontario to Houston
Have a flexible travel schedule? Discover the best time to fly to Houston from Ontario with our price prediction graph.
ONT-HO1
ONT-HOU
ONT-IAH
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
ONT-HO1
ONT-HOU
ONT-IAH
How far ahead should I book a flight from Ontario to Houston?
The best time to book flights from Ontario to Houston is 73 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?
Currently, September is the cheapest month in which you can book a flight from Ontario to Houston (average of $34). Flying from Ontario to Houston in January 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 HOU?
Find hourly flight availability from Ontario to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 9, 2026.
A simple way to save on the total cost of your ticket is to fly from Ontario to Houston in the evening. If you’re flexible enough to do this you can expect to save up to 49% on your trip compared to booking a flight in the morning.
How much does it cost to fly round-trip from Ontario to Houston?
How often are flights from Ontario to Houston delayed?
About 12% of weekly flights between Ontario and Houston have experienced delays in the past year, with the average delay time being 131 minutes.
What is the most punctual flight time for Ontario to Houston flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Sunday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Ontario to Houston flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 7% of flights being delayed.
The best insider tips for Ontario to Houston 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 Ontario to Houston trip
Our travel experts
Reviews of airlines servicing Houston
Get insights into the airlines that provide service to Houston. 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 Houston. Reviews last updated May 9, 2026.
Read through reviews of airlines operating flights from Ontario to Houston, such as Southwest,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Houston. 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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Complete your trip
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Search flights from Ontario to Houston by cabin class
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Ontario and Houston flights
Browse other Ontario and Houston flight options. Last updated on May 9, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on May 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to Houston
Discover the top 4 airlines that operate flights from Ontario to Houston. 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 May 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$71 | Average$213 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$168 | Average$364 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$194 | Average$391 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$210 | Average$417 | FlexibilityNo cancel fee | On-time71% |