$153+ Cheap flights from Ontario to Jacksonville (ONT - JAX)
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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — JAX
Sep 28 — Oct 51
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Jacksonville 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.Cheap flight deals from Ontario to Jacksonville
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to JacksonvilleExplore the most affordable flight options available from Ontario to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 29, 2026.
Explore the most affordable flight options available from Ontario to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:44 pm -
1 stop23h 18m
Tue 10/277:03 pm -
2 stops31h 48m
Deal found 8/26![Multiple Airlines logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 8/27. 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.
Fri 10/308:35 pm -
1 stop20h 27m
Tue 11/36:46 pm -
2 stops32h 05m
Deal found 8/27![Multiple Airlines logo]()
$338
This Delta deal was found by Cheapflights users on 8/28. 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 10/1012:16 pm -
1 stop6h 34m
Sat 10/177:18 am -
1 stop6h 48m
Deal found 8/28![Delta logo]()
$377
This Southwest deal was found by Cheapflights users on 8/25. 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 10/298:05 am -
1 stop7h 50m
Mon 11/25:20 am -
2 stops8h 30m
Deal found 8/25![Southwest logo]()
$382
This Southwest deal was found by Cheapflights users on 8/26. 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.
Tue 10/66:10 am -
2 stops9h 20m
Tue 10/271:30 pm -
2 stops11h 15m
Deal found 8/26![Southwest logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 8/28. 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 10/106:15 am -
2 stops25h 22m
Sat 10/179:44 am -
1 stop9h 46m
Deal found 8/28![Multiple Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 8/25. 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.
Sat 9/267:05 am -
1 stop7h 49m
Fri 10/25:34 pm -
1 stop7h 50m
Deal found 8/25![Delta logo]()
$395
This Southwest deal was found by Cheapflights users on 8/25. 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 12/311:25 am -
1 stop6h 50m
Thu 12/106:35 am -
2 stops8h 35m
Deal found 8/25![Southwest logo]()
$400
This Southwest deal was found by Cheapflights users on 8/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:40 am -
2 stops8h 00m
Tue 11/31:55 pm -
2 stops9h 40m
Deal found 8/27![Southwest logo]()
$405
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Sun 9/65:00 am -
1 stop7h 33m
Fri 9/113:07 pm -
1 stop8h 46m
Deal found 8/27![United Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 8/28. 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 10/1010:04 am -
1 stop6h 58m
Tue 10/207:46 pm -
2 stops31h 04m
Deal found 8/28![Multiple Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 8/25. 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.
Fri 9/2510:00 pm -
1 stop8h 37m
Fri 10/25:34 pm -
1 stop7h 50m
Deal found 8/25![Delta logo]()
$413
Best flights from Ontario to JacksonvilleDiscover carefully curated flight deals from Ontario to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 29, 2026.
Discover carefully curated flight deals from Ontario to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 29, 2026.
This Southwest deal was found by Cheapflights users on 8/29. 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 12/410:55 am -
1 stop8h 10m
Mon 12/78:45 am -
1 stop8h 55m
Deal found 8/29![Southwest logo]()
$451
This United Airlines deal was found by Cheapflights users on 8/25. 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 12/1911:52 pm -
1 stop7h 59m
Wed 12/305:19 pm -
1 stop7h 52m
Deal found 8/25![United Airlines logo]()
$473
This KAYAK deal was found by Cheapflights users on 8/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:00 pm -
1 stop7h 37m
Wed 9/236:00 am -
1 stop8h 09m
Deal found 8/27![Delta logo]()
$586
This Southwest deal was found by Cheapflights users on 8/28. 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 10/105:30 am -
2 stops8h 25m
Tue 10/2012:45 pm -
2 stops11h 00m
Deal found 8/28![Southwest logo]()
$459
This United Airlines deal was found by Cheapflights users on 8/25. 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 9/266:00 am -
1 stop6h 39m
Sat 10/39:25 am -
2 stops11h 21m
Deal found 8/25![United Airlines logo]()
$492
This KAYAK deal was found by Cheapflights users on 8/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:00 pm -
1 stop9h 08m
Thu 9/246:59 pm -
1 stop6h 25m
Deal found 8/27![Delta logo]()
$586
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Thu 12/105:45 am -
1 stop7h 38m
Sun 12/138:00 am -
1 stop7h 34m
Deal found 8/26![United Airlines logo]()
$542
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Fri 9/115:00 am -
1 stop7h 33m
Tue 9/154:45 pm -
2 stops23h 05m
Deal found 8/24![United Airlines logo]()
$552
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Thu 10/296:00 am -
1 stop7h 23m
Mon 11/24:15 pm -
1 stop7h 36m
Deal found 8/26![United Airlines logo]()
$560
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Sun 9/276:00 am -
1 stop8h 51m
Sat 10/39:25 am -
2 stops11h 21m
Deal found 8/26![United Airlines logo]()
$577
This United Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/45:00 am -
1 stop7h 42m
Wed 10/74:58 pm -
1 stop8h 51m
Deal found 8/28![United Airlines logo]()
$579
Last-minute flights from Ontario to JacksonvilleDiscover last-minute flight deals from Ontario to Jacksonville. Data last updated August 29, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Jacksonville. Data last updated August 29, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Sun 9/65:00 am -
1 stop7h 33m
Fri 9/113:07 pm -
1 stop8h 46m
Deal found 8/27![United Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 8/28. 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 9/1012:17 pm -
1 stop8h 41m
Mon 9/146:59 pm -
1 stop6h 25m
Deal found 8/28![Delta logo]()
$509
This American Airlines deal was found by Cheapflights users on 8/28. 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 9/126:00 am -
1 stop7h 15m
Wed 9/161:40 pm -
1 stop9h 27m
Deal found 8/28![American Airlines logo]()
$496
This Southwest deal was found by Cheapflights users on 8/28. 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 9/126:55 am -
1 stop6h 35m
Thu 9/174:50 pm -
1 stop8h 25m
Deal found 8/28![Southwest logo]()
$504
This Southwest deal was found by Cheapflights users on 8/26. 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.
Sun 9/208:30 am -
1 stop11h 05m
Wed 9/232:05 pm -
2 stops9h 55m
Deal found 8/26![Southwest logo]()
$491
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Sun 9/206:00 am -
1 stop6h 39m
Wed 9/234:45 pm -
1 stop9h 14m
Deal found 8/26![United Airlines logo]()
$500
This Delta deal was found by Cheapflights users on 8/25. 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.
Fri 9/2510:00 pm -
1 stop8h 37m
Fri 10/25:34 pm -
1 stop7h 50m
Deal found 8/25![Delta logo]()
$413
This Delta deal was found by Cheapflights users on 8/25. 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.
Sat 9/267:05 am -
1 stop7h 49m
Fri 10/25:34 pm -
1 stop7h 50m
Deal found 8/25![Delta logo]()
$395
This Delta deal was found by Cheapflights users on 8/25. 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.
Sat 9/267:05 am -
1 stop6h 23m
Sun 10/46:59 pm -
1 stop6h 25m
Deal found 8/25![Delta logo]()
$432
This United Airlines deal was found by Cheapflights users on 8/25. 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 9/266:00 am -
1 stop6h 39m
Sat 10/35:25 pm -
1 stop7h 34m
Deal found 8/25![United Airlines logo]()
$487
One-way flights from Ontario to JacksonvilleSearch for one-way flight options from Ontario to Jacksonville. Find affordable one-way fares based on user searches. Data last updated August 29, 2026.
Search for one-way flight options from Ontario to Jacksonville. Find affordable one-way fares based on user searches. Data last updated August 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/25. 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.
Mon 10/198:35 pm -
2 stops19h 11m
Deal found 8/25![Frontier logo]()
$153
This Delta deal was found by Cheapflights users on 8/25. 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.
Mon 10/1911:08 pm -
1 stop8h 12m
Deal found 8/25![Delta logo]()
$189
This Delta deal was found by Cheapflights users on 8/29. 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 9/1112:17 pm -
1 stop8h 41m
Deal found 8/29![Delta logo]()
$206
This Delta deal was found by Cheapflights users on 8/25. 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.
Fri 10/210:00 pm -
1 stop7h 37m
Deal found 8/25![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 8/25. 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.
Wed 9/3010:55 am -
1 stop6h 35m
Deal found 8/25![Southwest logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:24 pm -
2 stops19h 37m
Deal found 8/28![Frontier logo]()
$240
This American Airlines deal was found by Cheapflights users on 8/28. 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.
Mon 10/1211:10 pm -
1 stop7h 34m
Deal found 8/28![American Airlines logo]()
$244
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Tue 10/68:03 am -
2 stops12h 17m
Deal found 8/24![United Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 8/29. 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 9/126:55 am -
1 stop6h 35m
Deal found 8/29![Southwest logo]()
$261
This Southwest deal was found by Cheapflights users on 8/29. 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 9/115:15 am -
2 stops10h 20m
Deal found 8/29![Southwest logo]()
$266
Find flight deals from Ontario to Jacksonville
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Jacksonville (JAX). 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 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $312 (Kiwi.com) |
One-way from | $153 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $438 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Jacksonville 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 7,457,451 searches. Data last updated August 29, 2026.
Use the filters below to find and compare flights from Ontario to Jacksonville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Fri 12/4
10:55 am-10:05 pm
1 stop8h 10m
Jacksonville
Mon 12/7
8:45 am-2:40 pm
1 stop8h 55m
$451
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Sat 10/10
5:30 am-4:55 pm
2 stops8h 25m
Jacksonville
Tue 10/20
12:45 pm-8:45 pm
2 stops11h 00m
$459
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Sat 12/19
11:52 pm-10:51 am
1 stop7h 59m
Jacksonville
Wed 12/30
5:19 pm-10:11 pm
1 stop7h 52m
$473
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Sat 9/26
6:00 am-3:39 pm
1 stop6h 39m
Jacksonville
Sat 10/3
9:25 am-5:46 pm
2 stops11h 21m
$492
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Thu 12/10
5:45 am-4:23 pm
1 stop7h 38m
Jacksonville
Sun 12/13
8:00 am-12:34 pm
1 stop7h 34m
$542
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Fri 9/11
5:00 am-3:33 pm
1 stop7h 33m
Jacksonville
Tue 9/15
4:45 pm-12:50 pm
2 stops23h 05m
$552
Quickest round-trip
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Thu 10/29
6:00 am-4:23 pm
1 stop7h 23m
Jacksonville
Mon 11/2
4:15 pm-8:51 pm
1 stop7h 36m
$560
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Sun 9/27
6:00 am-5:51 pm
1 stop8h 51m
Jacksonville
Sat 10/3
9:25 am-5:46 pm
2 stops11h 21m
$577
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Sun 10/4
5:00 am-3:42 pm
1 stop7h 42m
Jacksonville
Wed 10/7
4:58 pm-10:49 pm
1 stop8h 51m
$579
OntarioJacksonville
ONT Ontario - JAX Jacksonville
ONTJAX
Ontario
Mon 9/21
10:00 pm-8:37 am
1 stop7h 37m
Jacksonville
Wed 9/23
6:00 am-11:09 am
1 stop8h 09m
$586
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Ontario to Jacksonville
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 Ontario to Jacksonville in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Jacksonville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Jacksonville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Jacksonville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Jacksonville 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 Ontario-Jacksonville 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 Ontario to Jacksonville
Have a flexible travel schedule? Discover the best time to fly to Jacksonville from Ontario with our price prediction graph.
ONT-JAX
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Jacksonville
Reviews of airlines servicing Jacksonville
Get insights into the airlines that provide service to Jacksonville. 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 Jacksonville. Reviews last updated August 29, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Ontario to Jacksonville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Jacksonville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Jacksonville?
Book flights to Jacksonville if you plan to visit one of these locationsJacksonville Beach
Fernandina Beach
Orange Park
Kingsland
Waycross
Atlantic Beach
Yulee
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Alternative routes for Ontario to Jacksonville
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Complete your trip
Complete your trip to Jacksonville by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Jacksonville by cabin class
Find flights from Ontario to Jacksonville, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Jacksonville
Explore flights to Jacksonville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 29, 2026.
Ontario and Jacksonville flights
Browse other Ontario and Jacksonville flight options. Last updated on August 29, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on August 29, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to Jacksonville
Discover the top 4 airlines that operate flights from Ontario to Jacksonville. 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 7,457,451 searches. Data last updated August 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$302 | Average$442 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$330 | Average$368 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$342 | Average$473 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$374 | Average$562 | FlexibilityNo cancel fee | On-time63% |