$140+ Cheap flights from Jacksonville to Ontario (JAX - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ONT
Aug 27 — Sep 31
Round-trip
1 adult, Economy
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Cheapest flights from Jacksonville to OntarioExplore the most affordable flight options available from Jacksonville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
Explore the most affordable flight options available from Jacksonville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/187:05 pm
JAX
- ONT
2 stops26h 56m
Multiple Airlines
Tue 9/83:40 pm
ONT
- JAX
1 stop25h 22m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$316
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:00 am
JAX
- ONT
1 stop7h 42m
Delta
Tue 9/17:05 am
ONT
- JAX
1 stop6h 24m
Delta
Deal found 7/27![Delta logo]()
$323
This Southwest deal was found by Cheapflights users on 7/25. 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 8/205:50 am
JAX
- ONT
1 stop6h 25m
Southwest
Tue 9/18:35 am
ONT
- JAX
2 stops8h 05m
Southwest
Deal found 7/25![Southwest logo]()
$328
This Delta deal was found by Cheapflights users on 7/24. 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 8/2212:59 pm
JAX
- ONT
1 stop8h 31m
Delta
Sat 9/57:05 am
ONT
- JAX
1 stop7h 40m
Delta
Deal found 7/24![Delta logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Sat 8/229:33 am
JAX
- ONT
1 stop9h 21m
Multiple Airlines
Tue 9/110:59 am
ONT
- JAX
2 stops28h 11m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 7/26. 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 11/710:40 am
JAX
- ONT
2 stops11h 05m
Southwest
Sat 11/145:45 am
ONT
- JAX
2 stops9h 05m
Southwest
Deal found 7/26![Southwest logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/187:05 pm
JAX
- ONT
2 stops26h 56m
Multiple Airlines
Tue 9/13:40 pm
ONT
- JAX
1 stop25h 05m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/176:29 pm
JAX
- ONT
2 stops27h 32m
Multiple Airlines
Tue 9/13:40 pm
ONT
- JAX
1 stop25h 05m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/199:33 am
JAX
- ONT
1 stop9h 21m
Multiple Airlines
Mon 8/319:33 am
ONT
- JAX
2 stops29h 37m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/199:33 am
JAX
- ONT
1 stop9h 21m
Multiple Airlines
Tue 9/110:59 am
ONT
- JAX
2 stops28h 11m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Sat 8/229:33 am
JAX
- ONT
1 stop9h 21m
Multiple Airlines
Wed 9/26:00 am
ONT
- JAX
2 stops33h 10m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$357
Best flights from Jacksonville to OntarioDiscover carefully curated flight deals from Jacksonville to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
Discover carefully curated flight deals from Jacksonville to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
This Delta deal was found by Cheapflights users on 7/26. 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 11/77:15 am
JAX
- ONT
1 stop6h 51m
Delta
Sat 11/1412:22 pm
ONT
- JAX
1 stop8h 33m
Delta
Deal found 7/26![Delta logo]()
$323
This United Airlines deal was found by Cheapflights users on 7/25. 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 10/274:15 pm
JAX
- ONT
1 stop7h 36m
United Airlines
Sat 10/315:00 am
ONT
- JAX
1 stop7h 03m
United Airlines
Deal found 7/25![United Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:05 am
JAX
- ONT
1 stop6h 37m
Delta
Mon 9/77:05 am
ONT
- JAX
1 stop6h 24m
Delta
Deal found 7/27![Delta logo]()
$421
This United Airlines deal was found by Cheapflights users on 7/24. 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 8/294:00 pm
JAX
- ONT
1 stop7h 53m
United Airlines
Mon 8/315:00 am
ONT
- JAX
1 stop7h 33m
United Airlines
Deal found 7/24![United Airlines logo]()
$433
This United Airlines deal was found by Cheapflights users on 7/23. 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 8/268:15 am
JAX
- ONT
1 stop7h 35m
United Airlines
Mon 8/315:00 am
ONT
- JAX
1 stop7h 33m
United Airlines
Deal found 7/23![United Airlines logo]()
$433
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/24:45 pm
JAX
- ONT
1 stop8h 50m
United Airlines
Sun 9/66:00 am
ONT
- JAX
1 stop6h 39m
United Airlines
Deal found 7/27![United Airlines logo]()
$438
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:45 pm
JAX
- ONT
1 stop8h 50m
United Airlines
Sun 9/66:00 am
ONT
- JAX
1 stop6h 39m
United Airlines
Deal found 7/27![United Airlines logo]()
$485
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:25 am
JAX
- ONT
2 stops13h 36m
United Airlines
Sun 9/67:00 am
ONT
- JAX
1 stop9h 25m
United Airlines
Deal found 7/27![United Airlines logo]()
$503
This United Airlines deal was found by Cheapflights users on 7/24. 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 8/173:07 pm
JAX
- ONT
1 stop8h 46m
United Airlines
Sat 8/225:00 am
ONT
- JAX
2 stops9h 39m
United Airlines
Deal found 7/24![United Airlines logo]()
$505
Last-minute flights from Jacksonville to OntarioDiscover last-minute flight deals from Jacksonville to Ontario. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Ontario. Data last updated July 28, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/176:29 pm
JAX
- ONT
2 stops27h 32m
Multiple Airlines
Tue 9/13:40 pm
ONT
- JAX
1 stop25h 05m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/187:05 pm
JAX
- ONT
2 stops26h 56m
Multiple Airlines
Tue 9/83:40 pm
ONT
- JAX
1 stop25h 22m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$316
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:00 am
JAX
- ONT
1 stop7h 42m
Delta
Tue 9/17:05 am
ONT
- JAX
1 stop6h 24m
Delta
Deal found 7/27![Delta logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/187:05 pm
JAX
- ONT
2 stops26h 56m
Multiple Airlines
Tue 9/13:40 pm
ONT
- JAX
1 stop25h 05m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/199:33 am
JAX
- ONT
1 stop9h 21m
Multiple Airlines
Mon 8/319:33 am
ONT
- JAX
2 stops29h 37m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/199:33 am
JAX
- ONT
1 stop9h 21m
Multiple Airlines
Tue 9/110:59 am
ONT
- JAX
2 stops28h 11m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$356
This Southwest deal was found by Cheapflights users on 7/25. 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 8/205:50 am
JAX
- ONT
1 stop6h 25m
Southwest
Tue 9/18:35 am
ONT
- JAX
2 stops8h 05m
Southwest
Deal found 7/25![Southwest logo]()
$328
This Delta deal was found by Cheapflights users on 7/24. 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 8/226:00 am
JAX
- ONT
1 stop7h 42m
Delta
Wed 9/212:00 pm
ONT
- JAX
1 stop6h 43m
Delta
Deal found 7/24![Delta logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Sat 8/229:33 am
JAX
- ONT
1 stop9h 21m
Multiple Airlines
Tue 9/110:59 am
ONT
- JAX
2 stops28h 11m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Sat 8/229:33 am
JAX
- ONT
1 stop9h 21m
Multiple Airlines
Wed 9/26:00 am
ONT
- JAX
2 stops33h 10m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Sat 8/229:33 am
JAX
- ONT
1 stop9h 21m
Multiple Airlines
Sat 9/59:37 am
ONT
- JAX
2 stops29h 33m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$359
One-way flights from Jacksonville to OntarioSearch for one-way flight options from Jacksonville to Ontario. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
Search for one-way flight options from Jacksonville to Ontario. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:05 pm
JAX
- ONT
2 stops31h 45m
Frontier
Deal found 7/27![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:46 pm
JAX
- ONT
2 stops42h 07m
Frontier
Deal found 7/27![Frontier logo]()
$154
This United Airlines deal was found by Cheapflights users on 7/25. 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 8/154:00 pm
JAX
- ONT
1 stop7h 53m
United Airlines
Deal found 7/25![United Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:29 pm
JAX
- ONT
2 stops32h 21m
Frontier
Deal found 7/25![Frontier logo]()
$164
This Delta deal was found by Cheapflights users on 7/25. 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 8/194:10 pm
JAX
- ONT
1 stop6h 43m
Delta
Deal found 7/25![Delta logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:44 pm
JAX
- ONT
3 stops54h 06m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sat 8/156:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 7/25![Frontier logo]()
$169
This Southwest deal was found by Cheapflights users on 7/24. 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 8/205:50 am
JAX
- ONT
2 stops12h 15m
Southwest
Deal found 7/24![Southwest logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1410:26 pm
JAX
- ONT
3 stops28h 24m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/166:29 pm
JAX
- ONT
2 stops41h 07m
Frontier
Deal found 7/25![Frontier logo]()
$180
This Trip.com deal was found by Cheapflights users on 7/24. 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.
Sun 11/156:46 pm
JAX
- ONT
2 stops22h 51m
Frontier
Deal found 7/24![Frontier logo]()
$190
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/254:45 pm
JAX
- ONT
1 stop8h 50m
United Airlines
Deal found 7/26![United Airlines logo]()
$217
Find flight deals from Jacksonville to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Jacksonville (JAX) 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 July 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $316 (Kiwi.com) |
One-way from | $140 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $487 |
Cheapflights Fare Finder
Customize your flight search to find flights from Jacksonville 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 July 28, 2026.
Use the filters below to find and compare flights from Jacksonville to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Sat 11/7
7:15 am-11:06 am
1 stop6h 51m
Ontario
Sat 11/14
12:22 pm-11:55 pm
1 stop8h 33m
$323
Quickest round-trip
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Tue 9/1
7:05 am-10:42 am
1 stop6h 37m
Ontario
Mon 9/7
7:05 am-4:29 pm
1 stop6h 24m
$421
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Tue 10/27
4:15 pm-8:51 pm
1 stop7h 36m
Ontario
Sat 10/31
5:00 am-3:03 pm
1 stop7h 03m
$433
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Sat 8/29
4:00 pm-8:53 pm
1 stop7h 53m
Ontario
Mon 8/31
5:00 am-3:33 pm
1 stop7h 33m
$433
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Wed 8/26
8:15 am-12:50 pm
1 stop7h 35m
Ontario
Mon 8/31
5:00 am-3:33 pm
1 stop7h 33m
$433
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Wed 9/2
4:45 pm-10:35 pm
1 stop8h 50m
Ontario
Sun 9/6
6:00 am-3:39 pm
1 stop6h 39m
$438
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 9/4
4:45 pm-10:35 pm
1 stop8h 50m
Ontario
Sun 9/6
6:00 am-3:39 pm
1 stop6h 39m
$485
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Sat 9/5
9:25 am-8:01 pm
2 stops13h 36m
Ontario
Sun 9/6
7:00 am-7:25 pm
1 stop9h 25m
$503
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Mon 8/17
3:07 pm-8:53 pm
1 stop8h 46m
Ontario
Sat 8/22
5:00 am-5:39 pm
2 stops9h 39m
$505
Cheapest one-way
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Mon 8/31
5:00 pm-9:59 pm
1 stop7h 59m
$217
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Jacksonville to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Jacksonville to Ontario in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Jacksonville-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Jacksonville-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Jacksonville-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Jacksonville-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Jacksonville-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Jacksonville to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Jacksonville with our price prediction graph.
JAX-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 Jacksonville to Ontario
What is the cheapest month to book a flight from Jacksonville to Ontario?
Currently, September is the cheapest month in which you can book a flight from Jacksonville to Ontario (average of $381). Flying from Jacksonville to Ontario in December is currently the most expensive (average of $748). 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.
How much does it cost to fly round-trip from Jacksonville to Ontario?
Airfare is below average for this route at the moment.
Jacksonville to Ontario flights typically cost between $433 and $718 in August.The cheapest round-trip price found within the last 5 days was $316 on Multiple Airlines (Aug 18-Sep 8).
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 July 28, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Jacksonville to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
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 Jacksonville 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 Jacksonville to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Jacksonville to Ontario by cabin class
Find flights from Jacksonville 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 July 28, 2026.
Jacksonville and Ontario flights
Browse other Jacksonville and Ontario flight options. Last updated on July 28, 2026.
Other flights from Jacksonville
Browse through other flights departing from Jacksonville. Flights are based on user searches made on Cheapflights and were last updated on July 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Jacksonville to Ontario
Discover the top 4 airlines that operate flights from Jacksonville 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 July 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$296 | Average$446 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$498 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$331 | Average$446 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$335 | Average$476 | FlexibilityNo cancel fee | On-time71% |