$121+ Cheap flights from Dallas 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — ONT
Jul 20 — Jul 271
Round-trip
1 adult, Economy
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Find cheap flights from Dallas 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 Dallas to Ontario are usually found in September or August, booked 87 days in advance, depart on a Thursday or Tuesday and return on a Thursday
Cheap flight deals from Dallas to Ontario
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Last-minute
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Cheapest flights from Dallas to OntarioExplore the most affordable flight options available from Dallas to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 20, 2026.
Explore the most affordable flight options available from Dallas to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 20, 2026.
This Frontier deal was found by Cheapflights users on 6/16. 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 8/44:30 pm
DFW
- ONT
1 stop9h 20m
Frontier
Tue 8/116:00 am
ONT
- DFW
1 stop7h 34m
Frontier
Deal found 6/16![Frontier logo]()
$210
This CheapOair deal was found by Cheapflights users on 6/15. 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 8/79:31 pm
DFW
- ONT
1 stop14h 33m
Frontier
Sun 8/98:17 am
ONT
- DFW
Nonstop3h 14m
Frontier
Deal found 6/15![Frontier logo]()
$213
This Frontier deal was found by Cheapflights users on 6/15. 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 8/65:18 am
DFW
- ONT
1 stop6h 46m
Frontier
Fri 8/78:17 am
ONT
- DFW
Nonstop3h 14m
Frontier
Deal found 6/15![Frontier logo]()
$215
This Frontier deal was found by Cheapflights users on 6/15. 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 11/126:00 am
DFW
- ONT
Nonstop3h 12m
Frontier
Tue 11/1710:48 am
ONT
- DFW
Nonstop3h 03m
Frontier
Deal found 6/15![Frontier logo]()
$218
This CheapOair deal was found by Cheapflights users on 6/16. 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 9/159:00 am
DFW
- ONT
1 stop13h 54m
Frontier
Wed 9/232:55 pm
ONT
- DFW
1 stop17h 11m
Frontier
Deal found 6/16![Frontier logo]()
$220
This Frontier deal was found by Cheapflights users on 6/15. 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 9/116:00 am
DFW
- ONT
Nonstop3h 12m
Frontier
Sun 9/138:07 am
ONT
- DFW
Nonstop3h 05m
Frontier
Deal found 6/15![Frontier logo]()
$228
This Frontier deal was found by Cheapflights users on 6/15. 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 8/87:35 am
DFW
- ONT
Nonstop3h 06m
Frontier
Sat 8/810:49 am
ONT
- DFW
1 stop7h 47m
Frontier
Deal found 6/15![Frontier logo]()
$231
This Frontier deal was found by Cheapflights users on 6/15. 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 9/96:00 am
DFW
- ONT
Nonstop3h 12m
Frontier
Sun 9/138:07 am
ONT
- DFW
Nonstop3h 05m
Frontier
Deal found 6/15![Frontier logo]()
$237
This Frontier deal was found by Cheapflights users on 6/15. 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 9/126:00 am
DFW
- ONT
Nonstop3h 12m
Frontier
Sun 9/138:07 am
ONT
- DFW
Nonstop3h 05m
Frontier
Deal found 6/15![Frontier logo]()
$238
This KAYAK deal was found by Cheapflights users on 6/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:15 am
DAL
- ONT
1 stop14h 25m
Southwest
Wed 10/215:30 am
ONT
- DAL
1 stop7h 40m
Southwest
Deal found 6/16![Southwest logo]()
$292
This Southwest deal was found by Cheapflights users on 6/20. 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 7/225:30 pm
DAL
- ONT
1 stop7h 05m
Southwest
Wed 8/52:15 pm
ONT
- DAL
Nonstop3h 00m
Southwest
Deal found 6/20![Southwest logo]()
$343
This Southwest deal was found by Cheapflights users on 6/19. 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 8/16:00 pm
DAL
- ONT
2 stops6h 55m
Southwest
Sat 8/87:05 am
ONT
- DAL
Nonstop2h 55m
Southwest
Deal found 6/19![Southwest logo]()
$348
Best flights from Dallas to OntarioDiscover carefully curated flight deals from Dallas to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 20, 2026.
Discover carefully curated flight deals from Dallas to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 20, 2026.
This Southwest deal was found by Cheapflights users on 6/19. 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 7/211:55 pm
DAL
- ONT
Nonstop3h 00m
Southwest
Sat 7/255:30 am
ONT
- DAL
1 stop5h 10m
Southwest
Deal found 6/19![Southwest logo]()
$383
This Delta deal was found by Cheapflights users on 6/16. 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 10/136:25 am
DFW
- ONT
2 stops11h 47m
Delta
Tue 10/2010:59 pm
ONT
- DFW
1 stop9h 29m
Delta
Deal found 6/16![Delta logo]()
$390
This Alaska Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/179:37 am
DFW
- ONT
1 stop10h 51m
Alaska Airlines
Wed 2/177:30 am
ONT
- DFW
1 stop7h 05m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$398
This United Airlines deal was found by Cheapflights users on 6/19. 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 8/255:15 am
DFW
- ONT
2 stops9h 35m
United Airlines
Wed 8/261:18 pm
ONT
- DFW
1 stop5h 20m
United Airlines
Deal found 6/19![United Airlines logo]()
$448
This Southwest deal was found by Cheapflights users on 6/15. 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 8/2910:00 am
DAL
- ONT
1 stop6h 30m
Southwest
Tue 9/12:15 pm
ONT
- DAL
Nonstop3h 00m
Southwest
Deal found 6/15![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 6/19. 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 8/176:30 am
DAL
- ONT
1 stop7h 30m
Southwest
Mon 8/172:00 pm
ONT
- DAL
1 stop5h 45m
Southwest
Deal found 6/19![Southwest logo]()
$397
This KAYAK deal was found by Cheapflights users on 6/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:12 pm
DFW
- ONT
1 stop7h 22m
Delta
Thu 8/66:00 am
ONT
- DFW
1 stop5h 30m
Delta
Deal found 6/17![Delta logo]()
$445
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Thu 10/17:00 am
DFW
- ONT
1 stop7h 18m
United Airlines
Tue 10/61:52 pm
ONT
- DFW
2 stops8h 07m
United Airlines
Deal found 6/19![United Airlines logo]()
$470
This Southwest deal was found by Cheapflights users on 6/15. 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.
Fri 7/32:25 pm
DAL
- ONT
Nonstop3h 00m
Southwest
Tue 7/712:45 pm
ONT
- DAL
2 stops7h 20m
Southwest
Deal found 6/15![Southwest logo]()
$398
This Delta deal was found by Cheapflights users on 6/15. 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 9/41:50 pm
DFW
- ONT
2 stops11h 44m
Delta
Mon 9/79:43 am
ONT
- DFW
1 stop5h 40m
Delta
Deal found 6/15![Delta logo]()
$454
This United Airlines deal was found by Cheapflights users on 6/17. 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 8/1412:00 pm
DFW
- ONT
2 stops10h 01m
United Airlines
Sun 8/165:00 am
ONT
- DFW
1 stop5h 52m
United Airlines
Deal found 6/17![United Airlines logo]()
$480
This Southwest deal was found by Cheapflights users on 6/15. 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 7/256:00 am
DAL
- ONT
1 stop10h 20m
Southwest
Tue 7/285:15 am
ONT
- DAL
1 stop4h 25m
Southwest
Deal found 6/15![Southwest logo]()
$398
This Delta deal was found by Cheapflights users on 6/17. 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 10/246:25 am
DFW
- ONT
2 stops11h 47m
Delta
Sun 11/16:00 am
ONT
- DFW
2 stops10h 32m
Delta
Deal found 6/17![Delta logo]()
$458
This Southwest deal was found by Cheapflights users on 6/19. 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 7/142:35 pm
DAL
- ONT
1 stop6h 25m
Southwest
Tue 7/219:45 am
ONT
- DAL
Nonstop2h 55m
Southwest
Deal found 6/19![Southwest logo]()
$399
This United Airlines deal was found by Cheapflights users on 6/18. 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 7/1411:59 am
DFW
- ONT
2 stops12h 38m
United Airlines
Sat 7/185:00 am
ONT
- DFW
2 stops12h 31m
United Airlines
Deal found 6/18![United Airlines logo]()
$498
This Delta deal was found by Cheapflights users on 6/18. 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 7/32:31 pm
DFW
- ONT
2 stops10h 10m
Delta
Tue 7/149:40 am
ONT
- DFW
2 stops12h 19m
Delta
Deal found 6/18![Delta logo]()
$480
This Southwest deal was found by Cheapflights users on 6/17. 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 8/82:55 pm
DAL
- ONT
Nonstop3h 05m
Southwest
Sat 8/229:20 am
ONT
- DAL
2 stops6h 40m
Southwest
Deal found 6/17![Southwest logo]()
$402
This United Airlines deal was found by Cheapflights users on 6/16. 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 7/182:15 pm
DFW
- ONT
1 stop10h 36m
United Airlines
Sat 8/15:00 am
ONT
- DFW
2 stops12h 31m
United Airlines
Deal found 6/16![United Airlines logo]()
$506
This Southwest deal was found by Cheapflights users on 6/16. 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 7/186:00 am
DAL
- ONT
1 stop5h 25m
Southwest
Wed 7/2212:45 pm
ONT
- DAL
2 stops7h 20m
Southwest
Deal found 6/16![Southwest logo]()
$403
This Delta deal was found by Cheapflights users on 6/20. 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 12/125:45 am
DFW
- ONT
2 stops12h 27m
Delta
Sun 12/2012:00 pm
ONT
- DFW
1 stop10h 13m
Delta
Deal found 6/20![Delta logo]()
$491
This Southwest deal was found by Cheapflights users on 6/15. 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 8/292:35 pm
DAL
- ONT
2 stops7h 30m
Southwest
Wed 9/210:55 am
ONT
- DAL
2 stops6h 30m
Southwest
Deal found 6/15![Southwest logo]()
$408
This Southwest deal was found by Cheapflights users on 6/18. 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 8/17:05 pm
DAL
- ONT
1 stop5h 30m
Southwest
Sat 8/85:50 am
ONT
- DAL
1 stop4h 35m
Southwest
Deal found 6/18![Southwest logo]()
$411
This Southwest deal was found by Cheapflights users on 6/17. 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 10/244:55 pm
DAL
- ONT
Nonstop3h 05m
Southwest
Mon 11/26:30 am
ONT
- DAL
1 stop5h 50m
Southwest
Deal found 6/17![Southwest logo]()
$412
This Southwest deal was found by Cheapflights users on 6/16. 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 7/81:55 pm
DAL
- ONT
Nonstop3h 00m
Southwest
Tue 7/149:45 am
ONT
- DAL
Nonstop2h 55m
Southwest
Deal found 6/16![Southwest logo]()
$413
Last-minute flights from Dallas to OntarioDiscover last-minute flight deals from Dallas to Ontario. Data last updated June 20, 2026 and is based on user searches.
Discover last-minute flight deals from Dallas to Ontario. Data last updated June 20, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 6/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/89:07 am
DFW
- ONT
1 stop16h 43m
Frontier
Fri 7/178:17 am
ONT
- DFW
Nonstop3h 14m
Frontier
Deal found 6/16![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 6/15. 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 7/97:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Fri 7/106:00 am
ONT
- DFW
1 stop10h 03m
Frontier
Deal found 6/15![Frontier logo]()
$241
This CheapOair deal was found by Cheapflights users on 6/17. 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 7/109:31 pm
DFW
- ONT
1 stop14h 33m
Frontier
Sun 7/128:17 am
ONT
- DFW
Nonstop3h 14m
Frontier
Deal found 6/17![Frontier logo]()
$246
This Frontier deal was found by Cheapflights users on 6/15. 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 7/117:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Sat 7/1110:49 am
ONT
- DFW
1 stop7h 47m
Frontier
Deal found 6/15![Frontier logo]()
$247
This Frontier deal was found by Cheapflights users on 6/18. 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 7/187:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Sat 7/1810:49 am
ONT
- DFW
1 stop11h 40m
Frontier
Deal found 6/18![Frontier logo]()
$252
This Super.com deal was found by Cheapflights users on 6/16. 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 7/207:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Tue 8/46:00 am
ONT
- DFW
1 stop7h 34m
Frontier
Deal found 6/16![Frontier logo]()
$245
This Frontier deal was found by Cheapflights users on 6/20. 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 7/257:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Sat 8/88:17 am
ONT
- DFW
Nonstop3h 14m
Frontier
Deal found 6/20![Frontier logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/287:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Fri 7/318:17 am
ONT
- DFW
Nonstop3h 14m
Frontier
Deal found 6/16![Frontier logo]()
$249
This CheapOair deal was found by Cheapflights users on 6/15. 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.
Wed 7/297:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Tue 8/48:58 am
ONT
- DFW
1 stop19h 32m
Frontier
Deal found 6/15![Frontier logo]()
$239
This Frontier deal was found by Cheapflights users on 6/18. 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 7/307:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Tue 8/46:00 am
ONT
- DFW
1 stop5h 19m
Frontier
Deal found 6/18![Frontier logo]()
$254
This Frontier deal was found by Cheapflights users on 6/19. 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 7/317:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Wed 8/58:17 am
ONT
- DFW
Nonstop3h 14m
Frontier
Deal found 6/19![Frontier logo]()
$251
This Frontier deal was found by Cheapflights users on 6/18. 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 7/3110:51 pm
DFW
- ONT
1 stop11h 12m
Frontier
Tue 8/46:00 am
ONT
- DFW
1 stop5h 19m
Frontier
Deal found 6/18![Frontier logo]()
$253
One-way flights from Dallas to OntarioSearch for one-way flight options from Dallas to Ontario. Find affordable one-way fares based on user searches. Data last updated June 20, 2026.
Search for one-way flight options from Dallas to Ontario. Find affordable one-way fares based on user searches. Data last updated June 20, 2026.
This Frontier deal was found by Cheapflights users on 6/16. 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 9/156:00 am
DFW
- ONT
Nonstop3h 12m
Frontier
Deal found 6/16![Frontier logo]()
$121
This Super.com deal was found by Cheapflights users on 6/16. 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 8/177:35 am
DFW
- ONT
Nonstop3h 06m
Frontier
Deal found 6/16![Frontier logo]()
$126
This Super.com deal was found by Cheapflights users on 6/20. 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 7/177:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Deal found 6/20![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 6/19. 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 7/317:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Deal found 6/19![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 7/197:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Deal found 6/19![Frontier logo]()
$130
This Super.com deal was found by Cheapflights users on 6/18. 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 6/303:35 pm
DFW
- ONT
Nonstop3h 13m
Frontier
Deal found 6/18![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/79:31 pm
DFW
- ONT
1 stop28h 19m
Frontier
Deal found 6/16![Frontier logo]()
$135
This Super.com deal was found by Cheapflights users on 6/18. 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 7/157:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Deal found 6/18![Frontier logo]()
$136
This Frontier deal was found by Cheapflights users on 6/19. 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 7/187:31 am
DFW
- ONT
Nonstop3h 06m
Frontier
Deal found 6/19![Frontier logo]()
$137
This Southwest deal was found by Cheapflights users on 6/19. 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 9/1611:30 am
DAL
- ONT
Nonstop3h 00m
Southwest
Deal found 6/19![Southwest logo]()
$167
This Delta deal was found by Cheapflights users on 6/19. 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 9/1912:05 pm
DAL
- ONT
1 stop8h 28m
Delta
Deal found 6/19![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 6/19. 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 7/211:35 pm
DAL
- ONT
2 stops5h 30m
Southwest
Deal found 6/19![Southwest logo]()
$178
Find flight deals from Dallas to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Dallas (A78) 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 June 20, 2026.
Round-trip from | $210 (CheapOair) |
|---|---|
One-way from | $121 (Frontier) |
Popular in | June |
Cheapest in | September |
Average price | $330 |
Cheapflights Fare Finder
Customize your flight search to find flights from Dallas 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 June 20, 2026.
Use the filters below to find and compare flights from Dallas to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DallasOntario
DAL - ONT
DALONT
Dallas Love Field
Tue 7/21
1:55 pm-2:55 pm
Nonstop3h 00m
Ontario
Sat 7/25
5:30 am-12:40 pm
1 stop5h 10m
$383
DallasOntario
DAL - ONT
DALONT
Dallas Love Field
Sat 8/29
10:00 am-2:30 pm
1 stop6h 30m
Ontario
Tue 9/1
2:15 pm-7:15 pm
Nonstop3h 00m
$388
DallasOntario
DFW - ONT
DFWONT
Dallas/Fort Worth
Tue 10/13
6:25 am-4:12 pm
2 stops11h 47m
Ontario
Tue 10/20
10:59 pm-10:28 am
1 stop9h 29m
$390
DallasOntario
DAL - ONT
DALONT
Dallas Love Field
Mon 8/17
6:30 am-12:00 pm
1 stop7h 30m
Ontario
Mon 8/17
2:00 pm-9:45 pm
1 stop5h 45m
$397
DallasOntario
DFW - ONT
DFWONT
Dallas/Fort Worth
Tue 11/17
9:37 am-6:28 pm
1 stop10h 51m
Ontario
Wed 2/17
7:30 am-4:35 pm
1 stop7h 05m
$398
DallasOntario
DAL - ONT
DALONT
Dallas Love Field
Fri 7/3
2:25 pm-3:25 pm
Nonstop3h 00m
Ontario
Tue 7/7
12:45 pm-10:05 pm
2 stops7h 20m
$398
DallasOntario
DAL - ONT
DALONT
Dallas Love Field
Sat 7/25
6:00 am-2:20 pm
1 stop10h 20m
Ontario
Tue 7/28
5:15 am-11:40 am
1 stop4h 25m
$398
DallasOntario
DAL - ONT
DALONT
Dallas Love Field
Tue 7/14
2:35 pm-7:00 pm
1 stop6h 25m
Ontario
Tue 7/21
9:45 am-2:40 pm
Nonstop2h 55m
$399
DallasOntario
DAL - ONT
DALONT
Dallas Love Field
Sat 8/8
2:55 pm-4:00 pm
Nonstop3h 05m
Ontario
Sat 8/22
9:20 am-6:00 pm
2 stops6h 40m
$402
DallasOntario
DAL - ONT
DALONT
Dallas Love Field
Sat 7/18
6:00 am-9:25 am
1 stop5h 25m
Ontario
Wed 7/22
12:45 pm-10:05 pm
2 stops7h 20m
$403
Showing 1-10 of 47 resultsSorted by cheapest first
Best time to book a flight from Dallas to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Dallas with our price prediction graph.
A78-ONT
DFW-ONT
DAL-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 Dallas to Ontario
A78-ONT
DFW-ONT
DAL-ONT
What is the cheapest month to book a flight from Dallas to Ontario?
Currently, February is the cheapest month in which you can book a flight from Dallas to Ontario (average of $33). Flying from Dallas to Ontario in June is currently the most expensive (average of $164). 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 DFW to ONT?
Find hourly flight availability from Dallas 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 June 20, 2026.
When flying from Dallas to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 20% versus a flight in the morning.
Weekly flight availability from Dallas to Ontario
Explore weekly flight availability from Dallas to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 20, 2026.
The most flights from A78 to ONT are scheduled on a Monday (19 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (15 on average).
How much does it cost to fly round-trip from Dallas to Ontario?
How far ahead should I book a flight from Dallas to Ontario?
The best time to book flights from Dallas to Ontario is 84 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 day to fly from Dallas to Ontario?
Use this chart to determine the cheapest time to fly round-trip from Dallas to Ontario. Price data was last updated on June 20, 2026.
Travelers seeking maximum savings on their Dallas to Ontario flight should consider departing on Wednesday 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 Dallas 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 Dallas 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 June 20, 2026.
Read reviews from past customers who have flown Southwest,American Airlines, andFrontier from Dallas to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Dallas to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Dallas to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Dallas to Ontario by cabin class
Find flights from Dallas to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 20, 2026.
Dallas and Ontario flights
Browse other Dallas and Ontario flight options. Last updated on June 20, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Dallas to Ontario
Discover the top 3 airlines that operate flights from Dallas 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 June 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$82 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$139 | Average$374 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$168 | Average$361 | FlexibilityNo cancel fee | On-time71% |