$151+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — JAX
May 1 — May 81
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 April 1, 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 April 1, 2026.
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/285:10 am
ONT
- JAX
1 stop7h 07m
United Airlines
Tue 5/55:25 pm
JAX
- ONT
1 stop7h 33m
United Airlines
Deal found 3/31![United Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 3/31. 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 4/288:05 am
ONT
- JAX
2 stops10h 25m
Southwest
Tue 5/57:20 am
JAX
- ONT
1 stop8h 55m
Southwest
Deal found 3/31![Southwest logo]()
$316
This Delta deal was found by Cheapflights users on 3/31. 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 4/2812:49 pm
ONT
- JAX
1 stop5h 59m
Delta
Sat 5/26:30 am
JAX
- ONT
1 stop8h 06m
Delta
Deal found 3/31![Delta logo]()
$322
This Southwest deal was found by Cheapflights users on 3/31. 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 5/71:50 pm
ONT
- JAX
1 stop5h 55m
Southwest
Tue 5/121:50 pm
JAX
- ONT
2 stops8h 45m
Southwest
Deal found 3/31![Southwest logo]()
$327
This Delta deal was found by Cheapflights users on 3/31. 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 5/75:50 pm
ONT
- JAX
2 stops11h 51m
Delta
Tue 5/125:30 pm
JAX
- ONT
2 stops9h 04m
Delta
Deal found 3/31![Delta logo]()
$332
This Delta deal was found by Cheapflights users on 4/1. 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 5/410:15 pm
ONT
- JAX
1 stop8h 59m
Delta
Sat 5/95:38 pm
JAX
- ONT
1 stop7h 10m
Delta
Deal found 4/1![Delta logo]()
$333
This Delta deal was found by Cheapflights users on 4/1. 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 5/45:05 pm
ONT
- JAX
2 stops12h 45m
Delta
Thu 5/73:48 pm
JAX
- ONT
1 stop9h 00m
Delta
Deal found 4/1![Delta logo]()
$338
This Delta deal was found by Cheapflights users on 3/30. 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 5/114:57 pm
ONT
- JAX
2 stops12h 44m
Delta
Mon 5/185:30 pm
JAX
- ONT
2 stops9h 04m
Delta
Deal found 3/30![Delta logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/1411:44 am
ONT
- JAX
1 stop29h 15m
Multiple Airlines
Mon 4/209:49 pm
JAX
- ONT
2 stops53h 06m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$356
This American Airlines deal was found by Cheapflights users on 3/28. 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 4/2011:59 pm
ONT
- JAX
2 stops10h 46m
American Airlines
Thu 4/231:29 pm
JAX
- ONT
1 stop10h 38m
American Airlines
Deal found 3/28![American Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 3/30. 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 5/1111:59 pm
ONT
- JAX
1 stop7h 32m
American Airlines
Mon 5/187:48 pm
JAX
- ONT
1 stop6h 58m
American Airlines
Deal found 3/30![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 April 1, 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 April 1, 2026.
This Delta deal was found by Cheapflights users on 3/27. 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.
Mon 5/1110:00 pm
ONT
- JAX
1 stop7h 41m
Delta
Mon 5/185:30 pm
JAX
- ONT
2 stops9h 04m
Delta
Deal found 3/27![Delta logo]()
$338
This Southwest deal was found by Cheapflights users on 3/27. 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.
Mon 5/111:50 pm
ONT
- JAX
1 stop5h 55m
Southwest
Mon 5/185:35 pm
JAX
- ONT
2 stops8h 30m
Southwest
Deal found 3/27![Southwest logo]()
$381
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/305:00 am
ONT
- JAX
2 stops13h 50m
United Airlines
Mon 5/45:25 pm
JAX
- ONT
1 stop7h 33m
United Airlines
Deal found 4/1![United Airlines logo]()
$405
This Delta deal was found by Cheapflights users on 3/28. 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.
Tue 6/25:50 pm
ONT
- JAX
2 stops11h 51m
Delta
Thu 6/45:05 am
JAX
- ONT
2 stops10h 14m
Delta
Deal found 3/28![Delta logo]()
$343
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 5/55:00 am
ONT
- JAX
1 stop7h 17m
United Airlines
Sat 5/95:25 pm
JAX
- ONT
1 stop7h 33m
United Airlines
Deal found 3/27![United Airlines logo]()
$438
This Southwest deal was found by Cheapflights users on 3/29. 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.
Wed 4/159:55 pm
ONT
- JAX
1 stop9h 20m
Southwest
Thu 4/306:55 am
JAX
- ONT
1 stop11h 20m
Southwest
Deal found 3/29![Southwest logo]()
$465
This Delta deal was found by Cheapflights users on 3/28. 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 5/286:00 am
ONT
- JAX
2 stops10h 13m
Delta
Mon 6/85:30 am
JAX
- ONT
1 stop8h 10m
Delta
Deal found 3/28![Delta logo]()
$424
This United Airlines deal was found by Cheapflights users on 3/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:05 am
ONT
- JAX
1 stop7h 15m
United Airlines
Mon 5/45:25 pm
JAX
- ONT
1 stop7h 33m
United Airlines
Deal found 3/29![United Airlines logo]()
$438
This Southwest deal was found by Cheapflights users on 3/27. 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.
Tue 4/1412:55 pm
ONT
- JAX
1 stop6h 20m
Southwest
Mon 4/206:55 am
JAX
- ONT
1 stop11h 20m
Southwest
Deal found 3/27![Southwest logo]()
$465
This Delta deal was found by Cheapflights users on 3/28. 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.
Wed 4/2212:49 pm
ONT
- JAX
1 stop5h 59m
Delta
Wed 4/296:30 am
JAX
- ONT
1 stop8h 06m
Delta
Deal found 3/28![Delta logo]()
$435
Last-minute flights from Ontario to JacksonvilleDiscover last-minute flight deals from Ontario to Jacksonville. Data last updated April 1, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Jacksonville. Data last updated April 1, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/1411:44 am
ONT
- JAX
1 stop29h 15m
Multiple Airlines
Mon 4/209:49 pm
JAX
- ONT
2 stops53h 06m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$356
This American Airlines deal was found by Cheapflights users on 3/28. 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 4/2011:59 pm
ONT
- JAX
2 stops10h 46m
American Airlines
Thu 4/231:29 pm
JAX
- ONT
1 stop10h 38m
American Airlines
Deal found 3/28![American Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/285:10 am
ONT
- JAX
1 stop7h 07m
United Airlines
Tue 5/55:25 pm
JAX
- ONT
1 stop7h 33m
United Airlines
Deal found 3/31![United Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 3/31. 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 4/288:05 am
ONT
- JAX
2 stops10h 25m
Southwest
Tue 5/57:20 am
JAX
- ONT
1 stop8h 55m
Southwest
Deal found 3/31![Southwest logo]()
$316
This Delta deal was found by Cheapflights users on 3/31. 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 4/2812:49 pm
ONT
- JAX
1 stop5h 59m
Delta
Sat 5/26:30 am
JAX
- ONT
1 stop8h 06m
Delta
Deal found 3/31![Delta logo]()
$322
This Delta deal was found by Cheapflights users on 4/1. 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 5/410:15 pm
ONT
- JAX
1 stop7h 35m
Delta
Thu 5/76:05 am
JAX
- ONT
1 stop7h 52m
Delta
Deal found 4/1![Delta logo]()
$333
This United Airlines deal was found by Cheapflights users on 3/27. 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 5/65:00 am
ONT
- JAX
2 stops13h 50m
United Airlines
Tue 5/125:25 pm
JAX
- ONT
1 stop7h 33m
United Airlines
Deal found 3/27![United Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 3/31. 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 5/71:50 pm
ONT
- JAX
1 stop5h 55m
Southwest
Tue 5/121:50 pm
JAX
- ONT
2 stops8h 45m
Southwest
Deal found 3/31![Southwest logo]()
$327
This Delta deal was found by Cheapflights users on 3/31. 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 5/75:50 pm
ONT
- JAX
2 stops11h 51m
Delta
Tue 5/125:30 pm
JAX
- ONT
2 stops9h 04m
Delta
Deal found 3/31![Delta logo]()
$332
This Delta deal was found by Cheapflights users on 3/30. 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 5/114:57 pm
ONT
- JAX
2 stops12h 44m
Delta
Mon 5/185:30 pm
JAX
- ONT
2 stops9h 04m
Delta
Deal found 3/30![Delta logo]()
$343
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 April 1, 2026.
Search for one-way flight options from Ontario to Jacksonville. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/227:44 pm
ONT
- JAX
3 stops42h 56m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$151
This Delta deal was found by Cheapflights users on 3/31. 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 4/2212:49 pm
ONT
- JAX
1 stop5h 59m
Delta
Deal found 3/31![Delta logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:44 pm
ONT
- JAX
2 stops21h 50m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$167
This American Airlines deal was found by Cheapflights users on 3/31. 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 5/711:59 pm
ONT
- JAX
1 stop7h 32m
American Airlines
Deal found 3/31![American Airlines logo]()
$170
This Delta deal was found by Cheapflights users on 3/31. 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 5/75:50 pm
ONT
- JAX
2 stops11h 51m
Delta
Deal found 3/31![Delta logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:26 am
ONT
- JAX
2 stops30h 14m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$201
This Delta deal was found by Cheapflights users on 3/27. 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.
Thu 4/3010:15 pm
ONT
- JAX
1 stop7h 32m
Delta
Deal found 3/27![Delta logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 5/76:00 am
ONT
- JAX
3 stops32h 40m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/245:33 pm
ONT
- JAX
2 stops44h 57m
Frontier
Deal found 3/31![Frontier logo]()
$214
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 April 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $306 (United Airlines) |
One-way from | $151 (Kiwi.com) |
Popular in | November |
Cheapest in | January |
Average price | $445 |
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 April 1, 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
Mon 5/11
10:00 pm-8:41 am
1 stop7h 41m
Jacksonville
Mon 5/18
5:30 pm-11:34 pm
2 stops9h 04m
$338
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Tue 6/2
5:50 pm-8:41 am
2 stops11h 51m
Jacksonville
Thu 6/4
5:05 am-12:19 pm
2 stops10h 14m
$343
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Mon 5/11
1:50 pm-10:45 pm
1 stop5h 55m
Jacksonville
Mon 5/18
5:35 pm-11:05 pm
2 stops8h 30m
$381
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Thu 4/30
5:00 am-9:50 pm
2 stops13h 50m
Jacksonville
Mon 5/4
5:25 pm-9:58 pm
1 stop7h 33m
$405
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Thu 5/28
6:00 am-7:13 pm
2 stops10h 13m
Jacksonville
Mon 6/8
5:30 am-10:40 am
1 stop8h 10m
$424
Quickest round-trip
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Wed 4/22
12:49 pm-9:48 pm
1 stop5h 59m
Jacksonville
Wed 4/29
6:30 am-11:36 am
1 stop8h 06m
$435
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Tue 5/5
5:00 am-3:17 pm
1 stop7h 17m
Jacksonville
Sat 5/9
5:25 pm-9:58 pm
1 stop7h 33m
$438
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Mon 4/27
6:05 am-4:20 pm
1 stop7h 15m
Jacksonville
Mon 5/4
5:25 pm-9:58 pm
1 stop7h 33m
$438
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Wed 4/15
9:55 pm-10:15 am
1 stop9h 20m
Jacksonville
Thu 4/30
6:55 am-3:15 pm
1 stop11h 20m
$465
OntarioJacksonville
ONT - JAX
ONTJAX
Ontario
Tue 4/14
12:55 pm-10:15 pm
1 stop6h 20m
Jacksonville
Mon 4/20
6:55 am-3:15 pm
1 stop11h 20m
$465
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 April.
| 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?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Jacksonville. Price data was last updated on March 13, 2026.
Booking 44 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, April is the cheapest month in which you can book a flight from Ontario to Jacksonville (average of $81). Flying from Ontario to Jacksonville in July is currently the most expensive (average of $343). 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 April 1, 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.
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
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
Orange Park
Fernandina Beach
Kingsland
Waycross
Yulee
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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 April 1, 2026.
Ontario and Jacksonville flights
Browse other Ontario and Jacksonville flight options. Last updated on April 1, 2026.
Other flights from Ontario
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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 2,558,603 searches. Data last updated April 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$306 | Average$421 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$326 | Average$438 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$330 | Average$368 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$342 | Average$442 | FlexibilityNo cancel fee | On-time63% |