$140+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — JAX
Jun 14 — Jun 211
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
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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
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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 May 15, 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 May 15, 2026.
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Tue 7/215:30 am
JAX
- ONT
1 stop8h 08m
Delta
Deal found 5/12![Delta logo]()
$331
This Delta deal was found by Cheapflights users on 5/11. 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 7/145:10 pm
ONT
- JAX
2 stops12h 26m
Delta
Tue 7/215:30 am
JAX
- ONT
2 stops9h 40m
Delta
Deal found 5/11![Delta logo]()
$341
This Delta deal was found by Cheapflights users on 5/11. 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 7/1310:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Tue 7/215:30 am
JAX
- ONT
1 stop8h 08m
Delta
Deal found 5/11![Delta logo]()
$343
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Wed 7/1510:25 am
ONT
- JAX
2 stops10h 34m
American Airlines
Tue 7/216:11 pm
JAX
- ONT
1 stop7h 23m
American Airlines
Deal found 5/12![American Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:30 am
ONT
- JAX
2 stops11h 05m
Southwest
Wed 8/53:35 pm
JAX
- ONT
2 stops8h 20m
Southwest
Deal found 5/14![Southwest logo]()
$354
This Delta deal was found by Cheapflights users on 5/13. 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 8/3110:59 pm
ONT
- JAX
1 stop8h 22m
Delta
Mon 9/142:30 pm
JAX
- ONT
1 stop6h 31m
Delta
Deal found 5/13![Delta logo]()
$355
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1611:59 pm
ONT
- JAX
1 stop7h 44m
American Airlines
Tue 6/307:40 pm
JAX
- ONT
1 stop7h 19m
American Airlines
Deal found 5/10![American Airlines logo]()
$357
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1611:59 pm
ONT
- JAX
1 stop7h 44m
American Airlines
Wed 6/247:40 pm
JAX
- ONT
1 stop7h 19m
American Airlines
Deal found 5/10![American Airlines logo]()
$365
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 May 15, 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 May 15, 2026.
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Tue 7/215:30 am
JAX
- ONT
2 stops9h 40m
Delta
Deal found 5/11![Delta logo]()
$336
This United Airlines deal was found by Cheapflights users on 5/13. 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 6/35:45 am
ONT
- JAX
1 stop6h 52m
United Airlines
Sat 6/64:47 pm
JAX
- ONT
1 stop9h 04m
United Airlines
Deal found 5/13![United Airlines logo]()
$465
This Southwest deal was found by Cheapflights users on 5/10. 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.
Tue 6/2311:55 pm
ONT
- JAX
2 stops11h 20m
Southwest
Tue 6/305:35 pm
JAX
- ONT
2 stops8h 25m
Southwest
Deal found 5/10![Southwest logo]()
$487
This Delta deal was found by Cheapflights users on 5/11. 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 7/145:10 pm
ONT
- JAX
2 stops12h 26m
Delta
Thu 7/234:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Deal found 5/11![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 5/11. 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 6/49:50 am
ONT
- JAX
2 stops11h 33m
Delta
Thu 6/115:38 pm
JAX
- ONT
1 stop7h 10m
Delta
Deal found 5/11![Delta logo]()
$422
This Delta deal was found by Cheapflights users on 5/11. 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 7/1610:00 pm
ONT
- JAX
1 stop8h 36m
Delta
Sat 7/187:05 am
JAX
- ONT
1 stop6h 33m
Delta
Deal found 5/11![Delta logo]()
$457
This United Airlines deal was found by Cheapflights users on 5/12. 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 7/315:00 am
ONT
- JAX
1 stop7h 39m
United Airlines
Sun 8/93:23 pm
JAX
- ONT
1 stop8h 19m
United Airlines
Deal found 5/12![United Airlines logo]()
$688
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:00 am
ONT
- JAX
2 stops11h 36m
Delta
Mon 6/811:40 am
JAX
- ONT
2 stops13h 08m
Delta
Deal found 5/10![Delta logo]()
$538
This United Airlines deal was found by Cheapflights users on 5/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:45 am
ONT
- JAX
1 stop14h 35m
United Airlines
Wed 6/37:05 am
JAX
- ONT
1 stop17h 50m
United Airlines
Deal found 5/9![United Airlines logo]()
$741
This United Airlines deal was found by Cheapflights users on 5/13. 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 6/115:45 am
ONT
- JAX
1 stop6h 52m
United Airlines
Wed 6/174:23 pm
JAX
- ONT
1 stop8h 32m
United Airlines
Deal found 5/13![United Airlines logo]()
$760
Last-minute flights from Ontario to JacksonvilleDiscover last-minute flight deals from Ontario to Jacksonville. Data last updated May 15, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Jacksonville. Data last updated May 15, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2910:00 pm
ONT
- JAX
1 stop8h 32m
Delta
Mon 6/84:14 pm
JAX
- ONT
1 stop8h 34m
Delta
Deal found 5/10![Delta logo]()
$416
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Fri 5/2911:59 pm
ONT
- JAX
2 stops9h 55m
American Airlines
Mon 6/86:05 pm
JAX
- ONT
1 stop7h 31m
American Airlines
Deal found 5/13![American Airlines logo]()
$421
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/24:39 pm
ONT
- JAX
1 stop24h 06m
Multiple Airlines
Sun 6/76:30 pm
JAX
- ONT
2 stops42h 35m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$388
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Thu 6/412:41 pm
ONT
- JAX
1 stop8h 01m
American Airlines
Mon 6/86:05 pm
JAX
- ONT
1 stop7h 31m
American Airlines
Deal found 5/13![American Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1611:59 pm
ONT
- JAX
1 stop7h 44m
American Airlines
Tue 6/307:40 pm
JAX
- ONT
1 stop7h 19m
American Airlines
Deal found 5/10![American Airlines logo]()
$357
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1611:59 pm
ONT
- JAX
1 stop7h 44m
American Airlines
Wed 6/247:40 pm
JAX
- ONT
1 stop7h 19m
American Airlines
Deal found 5/10![American Airlines logo]()
$365
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1611:59 pm
ONT
- JAX
1 stop7h 44m
American Airlines
Sat 6/276:05 pm
JAX
- ONT
1 stop7h 31m
American Airlines
Deal found 5/10![American Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 5/13. 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 6/1611:50 am
ONT
- JAX
1 stop9h 09m
Delta
Mon 6/225:38 pm
JAX
- ONT
1 stop7h 10m
Delta
Deal found 5/13![Delta logo]()
$407
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Thu 6/1812:41 pm
ONT
- JAX
1 stop8h 01m
American Airlines
Mon 6/225:50 am
JAX
- ONT
1 stop6h 41m
American Airlines
Deal found 5/12![American Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2311:59 pm
ONT
- JAX
1 stop7h 44m
American Airlines
Tue 6/307:40 pm
JAX
- ONT
1 stop7h 19m
American Airlines
Deal found 5/10![American Airlines logo]()
$405
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 May 15, 2026.
Search for one-way flight options from Ontario to Jacksonville. Find affordable one-way fares based on user searches. Data last updated May 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:43 pm
ONT
- JAX
2 stops20h 50m
Frontier
Deal found 5/10![Frontier logo]()
$140
This Trip.com deal was found by Cheapflights users on 5/11. 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.
Fri 6/58:03 am
ONT
- JAX
2 stops30h 32m
Frontier
Deal found 5/11![Frontier logo]()
$160
This American Airlines deal was found by Cheapflights users on 5/11. 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.
Tue 7/710:10 pm
ONT
- JAX
1 stop7h 20m
American Airlines
Deal found 5/11![American Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 6/175:43 pm
ONT
- JAX
2 stops20h 50m
Frontier
Deal found 5/12![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/265:43 pm
ONT
- JAX
2 stops44h 50m
Frontier
Deal found 5/14![Frontier logo]()
$174
This Delta deal was found by Cheapflights users on 5/9. 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 5/307:05 am
ONT
- JAX
1 stop6h 28m
Delta
Deal found 5/9![Delta logo]()
$178
This Delta deal was found by Cheapflights users on 5/12. 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 10/3112:00 pm
ONT
- JAX
1 stop6h 38m
Delta
Deal found 5/12![Delta logo]()
$183
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/206:47 pm
ONT
- JAX
2 stops19h 46m
Frontier
Deal found 5/10![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 6/265:43 pm
ONT
- JAX
2 stops20h 50m
Frontier
Deal found 5/11![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 5/14. 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 7/256:47 pm
ONT
- JAX
2 stops19h 46m
Frontier
Deal found 5/14![Frontier logo]()
$196
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Wed 6/1711:59 pm
ONT
- JAX
1 stop7h 44m
American Airlines
Deal found 5/12![American Airlines logo]()
$206
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 May 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $331 (Delta) |
One-way from | $140 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $601 |
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 2,558,603 searches. Data last updated May 15, 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 - JAX
ONTJAX
Ontario
Wed 7/15
10:00 pm-8:36 am
1 stop7h 36m
Jacksonville
Tue 7/21
5:30 am-12:10 pm
2 stops9h 40m
$336
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Tue 7/14
5:10 pm-8:36 am
2 stops12h 26m
Jacksonville
Thu 7/23
4:14 pm-9:50 pm
1 stop8h 36m
$348
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Thu 6/4
9:50 am-12:23 am
2 stops11h 33m
Jacksonville
Thu 6/11
5:38 pm-9:48 pm
1 stop7h 10m
$422
Quickest round-trip
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Thu 7/16
10:00 pm-9:36 am
1 stop8h 36m
Jacksonville
Sat 7/18
7:05 am-10:38 am
1 stop6h 33m
$457
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Wed 6/3
5:45 am-3:37 pm
1 stop6h 52m
Jacksonville
Sat 6/6
4:47 pm-10:51 pm
1 stop9h 04m
$465
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Tue 6/23
11:55 pm-2:15 pm
2 stops11h 20m
Jacksonville
Tue 6/30
5:35 pm-11:00 pm
2 stops8h 25m
$487
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Fri 5/29
6:00 am-8:36 pm
2 stops11h 36m
Jacksonville
Mon 6/8
11:40 am-9:48 pm
2 stops13h 08m
$538
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Fri 7/31
5:00 am-3:39 pm
1 stop7h 39m
Jacksonville
Sun 8/9
3:23 pm-8:42 pm
1 stop8h 19m
$688
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Tue 6/2
5:45 am-11:20 pm
1 stop14h 35m
Jacksonville
Wed 6/3
7:05 am-9:55 pm
1 stop17h 50m
$741
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Thu 6/11
5:45 am-3:37 pm
1 stop6h 52m
Jacksonville
Wed 6/17
4:23 pm-9:55 pm
1 stop8h 32m
$760
Showing 1-10 of 21 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 May.
| 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
What is the cheapest month to book a flight from Ontario to Jacksonville?
Currently, January is the cheapest month in which you can book a flight from Ontario to Jacksonville (average of $368). Flying from Ontario to Jacksonville in May is currently the most expensive (average of $601). 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 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 May 15, 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.
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
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
Orange Park
Fernandina Beach
Kingsland
Waycross
Atlantic Beach
Yulee
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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 2,558,603 searches. Data last updated May 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$330 | Average$368 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$334 | Average$482 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$336 | Average$456 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$342 | Average$434 | FlexibilityNo cancel fee | On-timeN/A |