$128+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — ONT
Sep 9 — Sep 161
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 February, 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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Best
Last-minute
One-way
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 August 10, 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 August 10, 2026.
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 8/297:30 am -
Nonstop3h 06m
Sat 9/59:37 am -
Nonstop3h 09m
Deal found 8/5![Frontier logo]()
$175
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/192:48 pm -
1 stop10h 59m
Sun 9/207:46 pm -
Nonstop3h 08m
Deal found 8/5![Frontier logo]()
$177
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.
Wed 9/25:18 am -
1 stop6h 46m
Sat 9/59:37 am -
Nonstop3h 09m
Deal found 8/5![Frontier logo]()
$182
This Frontier deal was found by Cheapflights users on 8/7. 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.
Fri 8/287:32 am -
Nonstop3h 06m
Tue 9/89:37 am -
Nonstop3h 09m
Deal found 8/7![Frontier logo]()
$184
This Super.com deal was found by Cheapflights users on 8/7. 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 8/247:32 am -
Nonstop3h 06m
Mon 8/318:17 am -
Nonstop3h 14m
Deal found 8/7![Frontier logo]()
$185
This Super.com deal was found by Cheapflights users on 8/7. 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.
Sat 8/297:30 am -
Nonstop3h 06m
Mon 8/318:17 am -
Nonstop3h 14m
Deal found 8/7![Frontier logo]()
$187
This Frontier deal was found by Cheapflights users on 8/7. 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.
Sun 8/237:32 am -
Nonstop3h 06m
Mon 8/318:17 am -
Nonstop3h 14m
Deal found 8/7![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 8/7. 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.
Mon 8/247:32 am -
Nonstop3h 06m
Thu 8/278:17 am -
Nonstop3h 14m
Deal found 8/7![Frontier logo]()
$189
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:22 pm -
Nonstop3h 17m
Sat 9/195:31 pm -
Nonstop3h 18m
Deal found 8/5![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 8/317:32 am -
Nonstop3h 06m
Tue 9/83:40 pm -
1 stop20h 01m
Deal found 8/7![Frontier logo]()
$191
This Southwest deal was found by Cheapflights users on 8/9. 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 10/245:00 pm -
Nonstop3h 10m
Tue 10/273:25 pm -
Nonstop2h 55m
Deal found 8/9![Southwest logo]()
$253
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:55 pm -
Nonstop3h 05m
Sun 9/69:50 am -
1 stop7h 35m
Deal found 8/5![Southwest logo]()
$265
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 August 10, 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 August 10, 2026.
This Delta deal was found by Cheapflights users on 8/8. 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.
Sat 9/56:12 pm -
1 stop6h 11m
Sun 9/66:00 am -
1 stop5h 30m
Deal found 8/8![Delta logo]()
$275
This Southwest deal was found by Cheapflights users on 8/7. 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 8/292:55 pm -
Nonstop3h 05m
Mon 8/315:15 am -
2 stops7h 30m
Deal found 8/7![Southwest logo]()
$294
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.
Thu 9/101:48 pm -
2 stops8h 13m
Sat 9/191:56 pm -
2 stops8h 03m
Deal found 8/6![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 8/7. 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.
Thu 9/106:00 am -
1 stop5h 55m
Thu 9/172:40 pm -
1 stop5h 40m
Deal found 8/7![Southwest logo]()
$299
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.
Tue 10/137:20 am -
2 stops11h 03m
Tue 10/2011:56 am -
1 stop10h 01m
Deal found 8/6![Delta logo]()
$304
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:35 am -
1 stop4h 50m
Sat 9/1210:15 am -
1 stop4h 25m
Deal found 8/5![Southwest logo]()
$299
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.
Thu 9/108:10 am -
1 stop6h 04m
Tue 9/155:15 pm -
2 stops13h 31m
Deal found 8/5![Delta logo]()
$304
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/1111:40 am -
2 stops8h 31m
Sun 9/136:00 am -
1 stop5h 29m
Deal found 8/8![United Airlines logo]()
$390
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:20 pm -
Nonstop3h 05m
Fri 9/112:40 pm -
1 stop5h 40m
Deal found 8/5![Southwest logo]()
$329
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.
Wed 9/912:00 pm -
1 stop10h 24m
Mon 9/1410:00 pm -
1 stop9h 37m
Deal found 8/6![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:58 am -
2 stops10h 48m
Wed 10/218:03 am -
1 stop5h 48m
Deal found 8/7![United Airlines logo]()
$394
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.
Thu 9/241:44 pm -
2 stops12h 03m
Mon 10/56:00 am -
2 stops13h 00m
Deal found 8/5![Delta logo]()
$340
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:10 am -
1 stop5h 10m
Mon 8/317:00 am -
Nonstop3h 00m
Deal found 8/5![Southwest logo]()
$341
This Southwest deal was found by Cheapflights users on 8/7. 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.
Mon 9/146:40 am -
1 stop4h 40m
Mon 9/215:15 am -
2 stops6h 15m
Deal found 8/7![Southwest logo]()
$356
This Delta deal was found by Cheapflights users on 8/9. 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 9/53:00 pm -
2 stops9h 23m
Tue 9/155:15 pm -
2 stops13h 31m
Deal found 8/9![Delta logo]()
$358
This Southwest deal was found by Cheapflights users on 8/7. 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.
Fri 10/27:50 pm -
Nonstop3h 05m
Fri 10/211:55 pm -
1 stop6h 55m
Deal found 8/7![Southwest logo]()
$393
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.
Tue 9/86:12 pm -
1 stop5h 52m
Sun 9/136:00 am -
1 stop7h 43m
Deal found 8/6![Delta logo]()
$397
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:00 pm -
1 stop4h 55m
Sun 11/154:00 pm -
1 stop4h 20m
Deal found 8/6![Southwest logo]()
$397
This Southwest deal was found by Cheapflights users on 8/9. 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 8/314:45 pm -
1 stop4h 40m
Sat 9/53:15 pm -
1 stop4h 40m
Deal found 8/9![Southwest logo]()
$397
Last-minute flights from Dallas to OntarioDiscover last-minute flight deals from Dallas to Ontario. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Dallas to Ontario. Data last updated August 10, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/7. 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.
Sun 8/237:32 am -
Nonstop3h 06m
Mon 8/318:17 am -
Nonstop3h 14m
Deal found 8/7![Frontier logo]()
$188
This Super.com deal was found by Cheapflights users on 8/7. 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 8/247:32 am -
Nonstop3h 06m
Mon 8/318:17 am -
Nonstop3h 14m
Deal found 8/7![Frontier logo]()
$185
This Frontier deal was found by Cheapflights users on 8/7. 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.
Mon 8/247:32 am -
Nonstop3h 06m
Thu 8/278:17 am -
Nonstop3h 14m
Deal found 8/7![Frontier logo]()
$189
This Frontier deal was found by Cheapflights users on 8/7. 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.
Fri 8/287:32 am -
Nonstop3h 06m
Tue 9/89:37 am -
Nonstop3h 09m
Deal found 8/7![Frontier logo]()
$184
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 8/297:30 am -
Nonstop3h 06m
Sat 9/59:37 am -
Nonstop3h 09m
Deal found 8/5![Frontier logo]()
$175
This Super.com deal was found by Cheapflights users on 8/7. 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.
Sat 8/297:30 am -
Nonstop3h 06m
Mon 8/318:17 am -
Nonstop3h 14m
Deal found 8/7![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 8/317:32 am -
Nonstop3h 06m
Tue 9/83:40 pm -
1 stop20h 01m
Deal found 8/7![Frontier logo]()
$191
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.
Wed 9/25:18 am -
1 stop6h 46m
Sat 9/59:37 am -
Nonstop3h 09m
Deal found 8/5![Frontier logo]()
$182
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:55 pm -
Nonstop3h 05m
Sun 9/69:50 am -
1 stop7h 35m
Deal found 8/5![Southwest logo]()
$265
This Southwest deal was found by Cheapflights users on 8/7. 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 9/52:55 pm -
Nonstop3h 05m
Sat 9/127:05 am -
Nonstop2h 55m
Deal found 8/7![Southwest logo]()
$267
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:22 pm -
Nonstop3h 17m
Sat 9/195:31 pm -
Nonstop3h 18m
Deal found 8/5![Frontier logo]()
$190
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/192:48 pm -
1 stop10h 59m
Sun 9/207:46 pm -
Nonstop3h 08m
Deal found 8/5![Frontier logo]()
$177
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 August 10, 2026.
Search for one-way flight options from Dallas to Ontario. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:30 am -
Nonstop3h 04m
Deal found 8/8![American Airlines logo]()
$128
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:55 pm -
Nonstop3h 05m
Deal found 8/6![Southwest logo]()
$128
This Frontier deal was found by Cheapflights users on 8/10. 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 9/246:30 am -
1 stop6h 52m
Deal found 8/10![Frontier logo]()
$129
This Super.com deal was found by Cheapflights users on 8/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:29 pm -
1 stop5h 18m
Deal found 8/8![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Sun 10/48:22 pm -
1 stop25h 14m
Deal found 8/7![Frontier logo]()
$131
This Super.com deal was found by Cheapflights users on 8/10. 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 11/167:59 pm -
1 stop22h 11m
Deal found 8/10![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 8/9. 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 12/910:45 pm -
1 stop9h 30m
Deal found 8/9![Frontier logo]()
$135
This Super.com deal was found by Cheapflights users on 8/10. 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 11/78:30 am -
Nonstop3h 23m
Deal found 8/10![Frontier logo]()
$136
This Super.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:22 pm -
Nonstop3h 17m
Deal found 8/9![Frontier logo]()
$137
This Southwest deal was found by Cheapflights users on 8/10. 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 11/73:50 pm -
1 stop7h 10m
Deal found 8/10![Southwest logo]()
$137
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:12 pm -
1 stop6h 11m
Deal found 8/7![Delta logo]()
$138
This Southwest deal was found by Cheapflights users on 8/7. 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.
Sun 9/67:30 am -
1 stop5h 05m
Deal found 8/7![Southwest logo]()
$138
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 August 10, 2026.
Round-trip from | $175 (Super.com) |
|---|---|
One-way from | $128 (American Airlines) |
Popular in | July |
Cheapest in | September |
Average price | $265 |
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 August 10, 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
DFW Dallas/Fort Worth - ONT Ontario
DFWONT
Dallas/Fort Worth
Sat 9/5
6:12 pm-10:23 pm
1 stop6h 11m
Ontario
Sun 9/6
6:00 am-1:30 pm
1 stop5h 30m
$275
DallasOntario
DAL Dallas Love Field - ONT Ontario
DALONT
Dallas Love Field
Sat 8/29
2:55 pm-4:00 pm
Nonstop3h 05m
Ontario
Mon 8/31
5:15 am-2:45 pm
2 stops7h 30m
$294
DallasOntario
DAL Dallas Love Field - ONT Ontario
DALONT
Dallas Love Field
Thu 9/10
6:00 am-9:55 am
1 stop5h 55m
Ontario
Thu 9/17
2:40 pm-10:20 pm
1 stop5h 40m
$299
DallasOntario
DAL Dallas Love Field - ONT Ontario
DALONT
Dallas Love Field
Tue 9/8
7:35 am-10:25 am
1 stop4h 50m
Ontario
Sat 9/12
10:15 am-4:40 pm
1 stop4h 25m
$299
DallasOntario
DFW Dallas/Fort Worth - ONT Ontario
DFWONT
Dallas/Fort Worth
Tue 10/13
7:20 am-4:23 pm
2 stops11h 03m
Ontario
Tue 10/20
11:56 am-11:57 pm
1 stop10h 01m
$304
DallasOntario
DFW Dallas/Fort Worth - ONT Ontario
DFWONT
Dallas/Fort Worth
Thu 9/10
8:10 am-12:14 pm
1 stop6h 04m
Ontario
Tue 9/15
5:15 pm-8:46 am
2 stops13h 31m
$304
DallasOntario
DFW Dallas/Fort Worth - ONT Ontario
DFWONT
Dallas/Fort Worth
Thu 9/10
1:48 pm-8:01 pm
2 stops8h 13m
Ontario
Sat 9/19
1:56 pm-11:59 pm
2 stops8h 03m
$309
DallasOntario
DAL Dallas Love Field - ONT Ontario
DALONT
Dallas Love Field
Fri 9/4
7:20 pm-8:25 pm
Nonstop3h 05m
Ontario
Fri 9/11
2:40 pm-10:20 pm
1 stop5h 40m
$329
DallasOntario
DAL Dallas Love Field - ONT Ontario
DALONT
Dallas Love Field
Wed 9/9
12:00 pm-8:24 pm
1 stop10h 24m
Ontario
Mon 9/14
10:00 pm-9:37 am
1 stop9h 37m
$329
DallasOntario
DFW Dallas/Fort Worth - ONT Ontario
DFWONT
Dallas/Fort Worth
Thu 9/24
1:44 pm-11:47 pm
2 stops12h 03m
Ontario
Mon 10/5
6:00 am-9:00 pm
2 stops13h 00m
$340
Showing 1-10 of 40 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
DAL-ONT
DFW-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
DAL-ONT
DFW-ONT
What is the cheapest month to book a flight from Dallas to Ontario?
Currently, September is the cheapest month in which you can book a flight from Dallas to Ontario (average of $208). Flying from Dallas to Ontario in July is currently the most expensive (average of $371). 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 August 10, 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 afternoon, which can drop the price by up to 9% 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 August 10, 2026.
The most flights from A78 to ONT are scheduled on a Saturday (17 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (10 on average).
How much does it cost to fly round-trip from Dallas to Ontario?
Airfare is below average for this route at the moment.
Dallas to Ontario flights typically cost between $223 and $344 in September.The cheapest round-trip price found within the last 5 days was $175 on Frontier (Sep 2-Sep 5).
How far ahead should I book a flight from Dallas to Ontario?
The best time to book flights from Dallas to Ontario is 85 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 August 8, 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. Saturday 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 August 10, 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.
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
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.
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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 August 10, 2026.
Dallas and Ontario flights
Browse other Dallas and Ontario flight options. Last updated on August 10, 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 August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$81 | Average$249 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$159 | Average$391 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$189 | Average$382 | FlexibilityNo cancel fee | On-time71% |