$157+ Cheap flights from Jacksonville to Ontario (JAX - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ONT
Oct 2 — Oct 91
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Jacksonville to Ontario 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 Jacksonville to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Jacksonville to OntarioExplore the most affordable flight options available from Jacksonville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
Explore the most affordable flight options available from Jacksonville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
This CheapOair deal was found by Cheapflights users on 9/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:13 pm -
2 stops43h 22m
Tue 11/311:52 am -
2 stops27h 16m
Deal found 9/1![Frontier logo]()
$321
This Delta deal was found by Cheapflights users on 9/1. 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.
Thu 10/16:59 pm -
1 stop6h 25m
Sat 10/37:05 am -
1 stop9h 17m
Deal found 9/1![Delta logo]()
$377
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Sat 11/214:15 pm -
1 stop7h 36m
Sat 12/55:00 am -
1 stop7h 17m
Deal found 8/31![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 9/1. 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.
Thu 10/16:59 pm -
1 stop6h 25m
Fri 10/210:00 pm -
1 stop7h 37m
Deal found 9/1![Delta logo]()
$395
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:46 pm -
2 stops38h 18m
Mon 10/268:35 pm -
2 stops42h 33m
Deal found 9/2![Frontier logo]()
$401
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.
Wed 9/237:46 pm -
2 stops25h 53m
Tue 9/295:44 pm -
1 stop23h 18m
Deal found 8/28![Multiple Airlines logo]()
$404
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:44 am -
1 stop9h 46m
Sat 10/316:25 am -
2 stops9h 03m
Deal found 8/29![Multiple Airlines logo]()
$407
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.
Sun 9/62:29 pm -
1 stop7h 01m
Wed 9/912:17 pm -
1 stop6h 19m
Deal found 8/28![Delta logo]()
$411
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 10/241:20 pm -
2 stops10h 25m
Sat 10/316:20 am -
1 stop7h 20m
Deal found 8/29![Southwest logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/109:44 am -
1 stop9h 46m
Tue 10/136:15 am -
2 stops33h 31m
Deal found 9/1![Multiple Airlines logo]()
$418
This Southwest deal was found by Cheapflights users on 8/31. 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.
Sat 11/215:30 pm -
2 stops8h 40m
Sat 12/55:45 am -
2 stops9h 00m
Deal found 8/31![Southwest logo]()
$424
Best flights from Jacksonville to OntarioDiscover carefully curated flight deals from Jacksonville to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
Discover carefully curated flight deals from Jacksonville to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 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 9/255:50 am -
1 stop6h 25m
Tue 9/297:00 am -
2 stops9h 45m
Deal found 8/29![Southwest logo]()
$436
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 10/235:49 pm -
1 stop7h 05m
Fri 10/3012:16 pm -
1 stop6h 23m
Deal found 8/29![Delta logo]()
$451
This United Airlines deal was found by Cheapflights users on 8/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:58 pm -
1 stop8h 51m
Tue 10/66:00 am -
1 stop6h 39m
Deal found 8/30![United Airlines logo]()
$521
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.
Fri 10/235:05 pm -
2 stops9h 50m
Mon 10/266:40 am -
2 stops10h 25m
Deal found 8/28![Southwest logo]()
$461
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 9/102:29 pm -
1 stop8h 36m
Mon 9/1410:00 pm -
1 stop7h 37m
Deal found 8/28![Delta logo]()
$509
This United Airlines deal was found by Cheapflights users on 8/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:29 pm -
1 stop7h 11m
Wed 12/165:45 am -
1 stop7h 38m
Deal found 8/30![United Airlines logo]()
$521
This Southwest deal was found by Cheapflights users on 9/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:45 am -
2 stops8h 45m
Sun 9/275:35 am -
2 stops14h 00m
Deal found 9/1![Southwest logo]()
$515
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Fri 10/25:25 pm -
1 stop7h 34m
Tue 10/65:00 am -
1 stop7h 42m
Deal found 8/31![United Airlines logo]()
$541
This United Airlines deal was found by Cheapflights users on 8/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:58 pm -
1 stop8h 51m
Sat 10/175:00 am -
1 stop7h 42m
Deal found 8/30![United Airlines logo]()
$541
Last-minute flights from Jacksonville to OntarioDiscover last-minute flight deals from Jacksonville to Ontario. Data last updated September 2, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Ontario. Data last updated September 2, 2026 and is based on user searches.
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.
Sun 9/62:29 pm -
1 stop7h 01m
Wed 9/912:17 pm -
1 stop6h 19m
Deal found 8/28![Delta 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.
Wed 9/237:46 pm -
2 stops25h 53m
Tue 9/295:44 pm -
1 stop23h 18m
Deal found 8/28![Multiple Airlines logo]()
$404
This Southwest deal was found by Cheapflights users on 8/31. 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.
Wed 9/308:55 am -
1 stop8h 30m
Wed 10/77:30 am -
1 stop8h 00m
Deal found 8/31![Southwest logo]()
$431
This Delta deal was found by Cheapflights users on 9/1. 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.
Thu 10/16:59 pm -
1 stop6h 25m
Sat 10/37:05 am -
1 stop9h 17m
Deal found 9/1![Delta logo]()
$377
This Delta deal was found by Cheapflights users on 9/1. 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.
Thu 10/16:59 pm -
1 stop6h 25m
Fri 10/210:00 pm -
1 stop7h 37m
Deal found 9/1![Delta logo]()
$395
This Delta deal was found by Cheapflights users on 9/1. 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.
Thu 10/13:54 pm -
1 stop9h 30m
Sun 10/410:00 pm -
1 stop9h 08m
Deal found 9/1![Delta logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/109:44 am -
1 stop9h 46m
Tue 10/136:15 am -
2 stops33h 31m
Deal found 9/1![Multiple Airlines logo]()
$418
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:46 pm -
2 stops38h 18m
Mon 10/268:35 pm -
2 stops42h 33m
Deal found 9/2![Frontier logo]()
$401
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:44 am -
1 stop9h 46m
Sat 10/316:25 am -
2 stops9h 03m
Deal found 8/29![Multiple Airlines logo]()
$407
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 10/241:20 pm -
2 stops10h 25m
Sat 10/316:20 am -
1 stop7h 20m
Deal found 8/29![Southwest logo]()
$416
This CheapOair deal was found by Cheapflights users on 9/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:13 pm -
2 stops43h 22m
Tue 11/311:52 am -
2 stops27h 16m
Deal found 9/1![Frontier logo]()
$321
One-way flights from Jacksonville to OntarioSearch for one-way flight options from Jacksonville to Ontario. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
Search for one-way flight options from Jacksonville to Ontario. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
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.
Tue 9/227:46 pm -
2 stops31h 01m
Deal found 8/28![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:46 pm -
2 stops25h 02m
Deal found 9/1![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Mon 10/58:07 pm -
2 stops49h 09m
Deal found 8/31![Frontier logo]()
$184
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.
Fri 9/257:46 pm -
2 stops31h 01m
Deal found 8/28![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 8/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:13 pm -
2 stops43h 03m
Deal found 8/30![Frontier logo]()
$188
This Delta deal was found by Cheapflights users on 9/1. 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.
Thu 9/246:59 pm -
1 stop6h 25m
Deal found 9/1![Delta logo]()
$189
This Southwest deal was found by Cheapflights users on 8/31. 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.
Mon 10/56:30 pm -
2 stops8h 20m
Deal found 8/31![Southwest logo]()
$194
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.
Tue 9/2210:20 am -
3 stops27h 10m
Deal found 8/28![Multiple Airlines logo]()
$206
This Delta deal was found by Cheapflights users on 9/2. 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 1/16:00 am -
1 stop7h 00m
Deal found 9/2![Delta logo]()
$207
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Mon 10/54:58 pm -
1 stop8h 51m
Deal found 8/31![United Airlines logo]()
$226
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.
Thu 10/87:49 pm -
1 stop7h 03m
Deal found 8/28![American Airlines logo]()
$244
Find flight deals from Jacksonville to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Jacksonville (JAX) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $377 (Delta) |
One-way from | $157 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $403 |
Cheapflights Fare Finder
Customize your flight search to find flights from Jacksonville to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 2, 2026.
Use the filters below to find and compare flights from Jacksonville to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Fri 9/25
5:50 am-9:15 am
1 stop6h 25m
Ontario
Tue 9/29
7:00 am-7:45 pm
2 stops9h 45m
$436
Quickest round-trip
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Fri 10/23
5:49 pm-9:54 pm
1 stop7h 05m
Ontario
Fri 10/30
12:16 pm-9:39 pm
1 stop6h 23m
$451
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Fri 10/23
5:05 pm-11:55 pm
2 stops9h 50m
Ontario
Mon 10/26
6:40 am-8:05 pm
2 stops10h 25m
$461
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Thu 9/10
2:29 pm-8:05 pm
1 stop8h 36m
Ontario
Mon 9/14
10:00 pm-8:37 am
1 stop7h 37m
$509
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Wed 9/23
6:45 am-12:30 pm
2 stops8h 45m
Ontario
Sun 9/27
5:35 am-10:35 pm
2 stops14h 00m
$515
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Wed 9/30
4:58 pm-10:49 pm
1 stop8h 51m
Ontario
Tue 10/6
6:00 am-3:39 pm
1 stop6h 39m
$521
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Wed 11/25
5:29 pm-9:40 pm
1 stop7h 11m
Ontario
Wed 12/16
5:45 am-4:23 pm
1 stop7h 38m
$521
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Fri 10/2
5:25 pm-9:59 pm
1 stop7h 34m
Ontario
Tue 10/6
5:00 am-3:42 pm
1 stop7h 42m
$541
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Tue 10/13
4:58 pm-10:49 pm
1 stop8h 51m
Ontario
Sat 10/17
5:00 am-3:42 pm
1 stop7h 42m
$541
Cheapest one-way
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Fri 9/25
7:46 pm-11:47 pm
2 stops31h 01m
$185
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Jacksonville to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Jacksonville to Ontario in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Jacksonville-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Jacksonville-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Jacksonville-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Jacksonville-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Jacksonville-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Jacksonville to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Jacksonville with our price prediction graph.
JAX-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Jacksonville to Ontario
What is the cheapest month to book a flight from Jacksonville to Ontario?
Currently, January is the cheapest month in which you can book a flight from Jacksonville to Ontario (average of $393). Flying from Jacksonville to Ontario in December is currently the most expensive (average of $748). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Jacksonville to Ontario?
Airfare is below average for this route at the moment.
Jacksonville to Ontario flights typically cost between $347 and $471 in October.The cheapest round-trip price found within the last 5 days was $321 on Frontier (Oct 31-Nov 3).
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated September 2, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Jacksonville to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Jacksonville to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Other flights from Jacksonville
Popular flights
Alternative routes for Jacksonville to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Jacksonville to Ontario by cabin class
Find flights from Jacksonville to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 2, 2026.
Jacksonville and Ontario flights
Browse other Jacksonville and Ontario flight options. Last updated on September 2, 2026.
Other flights from Jacksonville
Browse through other flights departing from Jacksonville. Flights are based on user searches made on Cheapflights and were last updated on September 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Jacksonville to Ontario
Discover the top 4 airlines that operate flights from Jacksonville to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$296 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$497 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$332 | Average$453 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$335 | Average$466 | FlexibilityNo cancel fee | On-time71% |