$159+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — JAX
Jun 25 — Jul 21
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 26, 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 26, 2026.
This Southwest deal was found by Cheapflights users on 5/21. 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 8/1710:00 am
ONT
- JAX
1 stop8h 05m
Southwest
Thu 8/202:00 pm
JAX
- ONT
1 stop9h 20m
Southwest
Deal found 5/21![Southwest logo]()
$355
This Delta deal was found by Cheapflights users on 5/21. 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 11/1712:00 pm
ONT
- JAX
1 stop6h 38m
Delta
Wed 11/252:30 pm
JAX
- ONT
1 stop6h 48m
Delta
Deal found 5/21![Delta logo]()
$404
This Southwest deal was found by Cheapflights users on 5/21. 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 7/192:40 pm
ONT
- JAX
1 stop6h 30m
Southwest
Tue 7/212:55 pm
JAX
- ONT
1 stop10h 40m
Southwest
Deal found 5/21![Southwest logo]()
$409
This Southwest deal was found by Cheapflights users on 5/21. 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 8/1710:00 am
ONT
- JAX
1 stop8h 05m
Southwest
Fri 8/215:50 am
JAX
- ONT
1 stop6h 25m
Southwest
Deal found 5/21![Southwest logo]()
$416
This Southwest deal was found by Cheapflights users on 5/24. 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.
Sun 8/237:00 am
ONT
- JAX
1 stop8h 10m
Southwest
Tue 9/153:35 pm
JAX
- ONT
2 stops8h 20m
Southwest
Deal found 5/24![Southwest logo]()
$421
This American Airlines deal was found by Cheapflights users on 5/22. 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 8/3111:25 pm
ONT
- JAX
1 stop9h 31m
American Airlines
Mon 9/143:57 pm
JAX
- ONT
1 stop6h 58m
American Airlines
Deal found 5/22![American Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 5/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1411:59 pm
ONT
- JAX
2 stops9h 53m
American Airlines
Sat 7/185:51 am
JAX
- ONT
1 stop8h 54m
American Airlines
Deal found 5/23![American Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 5/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/211:59 pm
ONT
- JAX
1 stop7h 38m
American Airlines
Tue 7/76:11 pm
JAX
- ONT
1 stop7h 23m
American Airlines
Deal found 5/24![American Airlines logo]()
$443
This Southwest deal was found by Cheapflights users on 5/24. 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.
Mon 7/135:15 am
ONT
- JAX
2 stops8h 25m
Southwest
Tue 7/212:20 pm
JAX
- ONT
2 stops9h 00m
Southwest
Deal found 5/24![Southwest logo]()
$444
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 26, 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 26, 2026.
This Southwest deal was found by Cheapflights users on 5/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/192:40 pm
ONT
- JAX
1 stop6h 35m
Southwest
Tue 7/212:20 pm
JAX
- ONT
2 stops9h 00m
Southwest
Deal found 5/23![Southwest logo]()
$409
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1510:00 pm
ONT
- JAX
1 stop7h 35m
Delta
Mon 6/224:14 pm
JAX
- ONT
1 stop8h 34m
Delta
Deal found 5/20![Delta logo]()
$507
This United Airlines deal was found by Cheapflights users on 5/23. 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 8/265:00 am
ONT
- JAX
1 stop13h 46m
United Airlines
Sat 8/293:07 pm
JAX
- ONT
1 stop8h 46m
United Airlines
Deal found 5/23![United Airlines logo]()
$564
This Southwest deal was found by Cheapflights users on 5/25. 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.
Mon 10/512:45 pm
ONT
- JAX
2 stops7h 45m
Southwest
Sun 10/112:25 pm
JAX
- ONT
1 stop8h 30m
Southwest
Deal found 5/25![Southwest logo]()
$421
This Southwest deal was found by Cheapflights users on 5/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:15 am
ONT
- JAX
2 stops10h 20m
Southwest
Thu 8/204:50 pm
JAX
- ONT
2 stops8h 15m
Southwest
Deal found 5/23![Southwest logo]()
$427
This Southwest deal was found by Cheapflights users on 5/25. 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 7/25:15 am
ONT
- JAX
2 stops8h 25m
Southwest
Tue 7/72:55 pm
JAX
- ONT
1 stop10h 40m
Southwest
Deal found 5/25![Southwest logo]()
$460
This Southwest deal was found by Cheapflights users on 5/21. 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 7/55:15 am
ONT
- JAX
2 stops9h 00m
Southwest
Tue 7/75:35 pm
JAX
- ONT
2 stops8h 10m
Southwest
Deal found 5/21![Southwest logo]()
$521
This Southwest deal was found by Cheapflights users on 5/25. 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.
Sun 7/55:15 am
ONT
- JAX
2 stops9h 00m
Southwest
Sun 7/125:50 pm
JAX
- ONT
1 stop9h 40m
Southwest
Deal found 5/25![Southwest logo]()
$529
This Southwest deal was found by Cheapflights users on 5/22. 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 6/115:15 am
ONT
- JAX
2 stops8h 25m
Southwest
Tue 6/161:15 pm
JAX
- ONT
1 stop8h 45m
Southwest
Deal found 5/22![Southwest logo]()
$572
Last-minute flights from Ontario to JacksonvilleDiscover last-minute flight deals from Ontario to Jacksonville. Data last updated May 26, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Jacksonville. Data last updated May 26, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2912:07 pm
ONT
- JAX
1 stop9h 16m
Delta
Mon 6/84:14 pm
JAX
- ONT
1 stop8h 34m
Delta
Deal found 5/23![Delta logo]()
$537
This American Airlines deal was found by Cheapflights users on 5/22. 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 6/85:50 am
JAX
- ONT
1 stop6h 39m
American Airlines
Deal found 5/22![American Airlines logo]()
$542
This KAYAK deal was found by Cheapflights users on 5/21. 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.
Sun 6/711:59 pm
ONT
- JAX
1 stop7h 44m
American Airlines
Thu 6/186:05 pm
JAX
- ONT
1 stop7h 31m
American Airlines
Deal found 5/21![American Airlines logo]()
$533
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 6/106:47 pm
ONT
- JAX
2 stops19h 46m
Multiple Airlines
Wed 6/179:33 am
JAX
- ONT
1 stop8h 35m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$541
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 6/116:47 pm
ONT
- JAX
2 stops19h 46m
Multiple Airlines
Wed 6/179:33 am
JAX
- ONT
1 stop8h 35m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$545
This Southwest deal was found by Cheapflights users on 5/22. 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 6/115:15 am
ONT
- JAX
2 stops8h 25m
Southwest
Sat 6/135:25 am
JAX
- ONT
2 stops11h 15m
Southwest
Deal found 5/22![Southwest logo]()
$547
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1510:00 pm
ONT
- JAX
1 stop7h 35m
Delta
Mon 6/224:14 pm
JAX
- ONT
1 stop8h 34m
Delta
Deal found 5/20![Delta logo]()
$507
This Southwest deal was found by Cheapflights users on 5/22. 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 6/199:45 am
ONT
- JAX
1 stop8h 50m
Southwest
Fri 6/262:50 pm
JAX
- ONT
2 stops10h 20m
Southwest
Deal found 5/22![Southwest logo]()
$512
This American Airlines deal was found by Cheapflights users on 5/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2211:59 pm
ONT
- JAX
2 stops9h 54m
American Airlines
Mon 6/297:40 pm
JAX
- ONT
1 stop7h 19m
American Airlines
Deal found 5/24![American Airlines logo]()
$525
This American Airlines deal was found by Cheapflights users on 5/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3011:59 pm
ONT
- JAX
1 stop7h 44m
American Airlines
Mon 7/65:52 am
JAX
- ONT
1 stop6h 37m
American Airlines
Deal found 5/25![American Airlines logo]()
$500
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 26, 2026.
Search for one-way flight options from Ontario to Jacksonville. Find affordable one-way fares based on user searches. Data last updated May 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Tue 9/13:34 pm
ONT
- JAX
1 stop25h 11m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 5/22. 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 7/2110:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Deal found 5/22![Delta logo]()
$166
This Southwest deal was found by Cheapflights users on 5/24. 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.
Tue 7/218:30 am
ONT
- JAX
2 stops9h 40m
Southwest
Deal found 5/24![Southwest logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:43 pm
ONT
- JAX
2 stops20h 50m
Frontier
Deal found 5/20![Frontier logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 5/21. 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 6/275:43 pm
ONT
- JAX
2 stops20h 50m
Frontier
Deal found 5/21![Frontier logo]()
$207
This American Airlines deal was found by Cheapflights users on 5/22. 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 6/1710:00 pm
ONT
- JAX
1 stop7h 34m
American Airlines
Deal found 5/22![American Airlines logo]()
$215
This American Airlines deal was found by Cheapflights users on 5/22. 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
Deal found 5/22![American Airlines logo]()
$218
This Delta deal was found by Cheapflights users on 5/22. 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 7/2010:00 pm
ONT
- JAX
1 stop8h 36m
Delta
Deal found 5/22![Delta logo]()
$220
This United Airlines deal was found by Cheapflights users on 5/24. 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 10/317:00 am
ONT
- JAX
1 stop7h 44m
United Airlines
Deal found 5/24![United Airlines logo]()
$233
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/310:00 pm
ONT
- JAX
1 stop8h 27m
Delta
Deal found 5/20![Delta logo]()
$239
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 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $355 (Southwest) |
One-way from | $159 (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 26, 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
Quickest round-trip
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Sun 7/19
2:40 pm-12:15 am
1 stop6h 35m
Jacksonville
Tue 7/21
2:20 pm-8:20 pm
2 stops9h 00m
$409
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Mon 10/5
12:45 pm-11:30 pm
2 stops7h 45m
Jacksonville
Sun 10/11
2:25 pm-7:55 pm
1 stop8h 30m
$421
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Mon 8/17
5:15 am-6:35 pm
2 stops10h 20m
Jacksonville
Thu 8/20
4:50 pm-10:05 pm
2 stops8h 15m
$427
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Thu 7/2
5:15 am-4:40 pm
2 stops8h 25m
Jacksonville
Tue 7/7
2:55 pm-10:35 pm
1 stop10h 40m
$460
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Mon 6/15
10:00 pm-8:35 am
1 stop7h 35m
Jacksonville
Mon 6/22
4:14 pm-9:48 pm
1 stop8h 34m
$507
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Sun 7/5
5:15 am-5:15 pm
2 stops9h 00m
Jacksonville
Tue 7/7
5:35 pm-10:45 pm
2 stops8h 10m
$521
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Sun 7/5
5:15 am-5:15 pm
2 stops9h 00m
Jacksonville
Sun 7/12
5:50 pm-12:30 am
1 stop9h 40m
$529
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Wed 8/26
5:00 am-9:46 pm
1 stop13h 46m
Jacksonville
Sat 8/29
3:07 pm-8:53 pm
1 stop8h 46m
$564
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Thu 6/11
5:15 am-4:40 pm
2 stops8h 25m
Jacksonville
Tue 6/16
1:15 pm-7:00 pm
1 stop8h 45m
$572
Cheapest one-way
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Tue 7/21
8:30 am-9:10 pm
2 stops9h 40m
$171
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
How far ahead should I book a flight from Ontario to Jacksonville?
Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Jacksonville. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 26, 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.
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
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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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 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$330 | Average$368 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$334 | Average$456 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$336 | Average$456 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$342 | Average$442 | FlexibilityNo cancel fee | On-timeN/A |