$141+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ONT
Jul 31 — Aug 71
Round-trip
1 adult, Economy
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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
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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 Jacksonville to Ontario
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Last-minute
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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 July 1, 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 July 1, 2026.
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Tue 8/188:12 am
JAX
- ONT
1 stop8h 19m
American Airlines
Tue 9/17:05 am
ONT
- JAX
1 stop8h 52m
American Airlines
Deal found 6/28![American Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:50 am
JAX
- ONT
1 stop6h 25m
Southwest
Mon 8/2411:00 am
ONT
- JAX
1 stop7h 45m
Southwest
Deal found 6/30![Southwest logo]()
$359
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:52 am
JAX
- ONT
1 stop6h 37m
American Airlines
Sat 8/111:59 pm
ONT
- JAX
1 stop7h 38m
American Airlines
Deal found 7/1![American Airlines logo]()
$378
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:35 pm
JAX
- ONT
2 stops8h 15m
Southwest
Tue 8/48:35 am
ONT
- JAX
2 stops8h 05m
Southwest
Deal found 6/26![Southwest logo]()
$390
This Delta deal was found by Cheapflights users on 6/27. 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 11/233:45 pm
JAX
- ONT
1 stop9h 29m
Delta
Tue 12/110:59 pm
ONT
- JAX
1 stop6h 48m
Delta
Deal found 6/27![Delta logo]()
$400
This Delta deal was found by Cheapflights users on 6/30. 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.
Wed 7/224:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Sat 8/17:05 am
ONT
- JAX
1 stop6h 30m
Delta
Deal found 6/30![Delta logo]()
$401
This Delta deal was found by Cheapflights users on 6/29. 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 10/237:15 am
JAX
- ONT
1 stop6h 53m
Delta
Mon 10/2611:15 pm
ONT
- JAX
1 stop8h 01m
Delta
Deal found 6/29![Delta logo]()
$402
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Sat 8/228:12 am
JAX
- ONT
1 stop6h 31m
American Airlines
Mon 8/317:05 am
ONT
- JAX
1 stop8h 52m
American Airlines
Deal found 6/30![American Airlines logo]()
$416
This Delta deal was found by Cheapflights users on 6/30. 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.
Fri 9/185:34 pm
JAX
- ONT
1 stop7h 52m
Delta
Mon 9/2110:00 pm
ONT
- JAX
1 stop7h 37m
Delta
Deal found 6/30![Delta logo]()
$418
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 July 1, 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 July 1, 2026.
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:35 pm
JAX
- ONT
2 stops8h 15m
Southwest
Tue 8/48:35 am
ONT
- JAX
2 stops8h 05m
Southwest
Deal found 6/26![Southwest logo]()
$390
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 7/214:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Thu 7/2310:00 pm
ONT
- JAX
1 stop8h 36m
Delta
Deal found 7/1![Delta logo]()
$430
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/264:45 pm
JAX
- ONT
1 stop8h 50m
United Airlines
Mon 8/317:00 am
ONT
- JAX
1 stop9h 25m
United Airlines
Deal found 6/28![United Airlines logo]()
$506
This Southwest deal was found by Cheapflights users on 6/29. 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 10/234:30 pm
JAX
- ONT
2 stops9h 45m
Southwest
Mon 10/262:40 pm
ONT
- JAX
1 stop5h 50m
Southwest
Deal found 6/29![Southwest logo]()
$423
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:50 pm
JAX
- ONT
1 stop8h 20m
Southwest
Mon 9/215:15 am
ONT
- JAX
2 stops10h 20m
Southwest
Deal found 6/30![Southwest logo]()
$423
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:10 pm
JAX
- ONT
1 stop8h 42m
Delta
Mon 8/2410:00 pm
ONT
- JAX
1 stop9h 11m
Delta
Deal found 6/26![Delta logo]()
$479
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Fri 8/144:45 pm
JAX
- ONT
1 stop8h 50m
United Airlines
Wed 8/197:00 am
ONT
- JAX
1 stop9h 25m
United Airlines
Deal found 6/27![United Airlines logo]()
$528
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:25 am
JAX
- ONT
2 stops11h 16m
United Airlines
Wed 10/217:00 am
ONT
- JAX
1 stop9h 09m
United Airlines
Deal found 6/26![United Airlines logo]()
$529
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:30 am
JAX
- ONT
2 stops9h 30m
Southwest
Thu 7/309:40 pm
ONT
- JAX
1 stop9h 40m
Southwest
Deal found 6/26![Southwest logo]()
$482
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/242:15 pm
JAX
- ONT
1 stop11h 10m
Southwest
Thu 7/305:15 am
ONT
- JAX
2 stops10h 35m
Southwest
Deal found 6/30![Southwest logo]()
$512
Last-minute flights from Jacksonville to OntarioDiscover last-minute flight deals from Jacksonville to Ontario. Data last updated July 1, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Ontario. Data last updated July 1, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/27. 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.
Tue 7/74:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Tue 7/2110:00 pm
ONT
- JAX
1 stop8h 36m
Delta
Deal found 6/27![Delta logo]()
$447
This Southwest deal was found by Cheapflights users on 6/29. 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.
Tue 7/215:35 pm
JAX
- ONT
2 stops8h 15m
Southwest
Wed 7/299:55 am
ONT
- JAX
1 stop6h 40m
Southwest
Deal found 6/29![Southwest logo]()
$422
This Delta deal was found by Cheapflights users on 6/30. 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.
Wed 7/224:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Sat 8/17:05 am
ONT
- JAX
1 stop6h 30m
Delta
Deal found 6/30![Delta logo]()
$401
This Delta deal was found by Cheapflights users on 6/30. 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.
Fri 7/245:32 pm
JAX
- ONT
1 stop7h 18m
Delta
Sat 8/17:05 am
ONT
- JAX
1 stop6h 30m
Delta
Deal found 6/30![Delta logo]()
$430
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:52 am
JAX
- ONT
1 stop6h 37m
American Airlines
Sat 8/111:59 pm
ONT
- JAX
1 stop7h 38m
American Airlines
Deal found 7/1![American Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 7/287:00 am
JAX
- ONT
1 stop6h 38m
Delta
Mon 8/310:00 pm
ONT
- JAX
1 stop7h 47m
Delta
Deal found 6/30![Delta logo]()
$416
This American Airlines deal was found by Cheapflights users on 6/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:41 pm
JAX
- ONT
1 stop7h 18m
American Airlines
Tue 8/411:59 pm
ONT
- JAX
1 stop7h 43m
American Airlines
Deal found 6/29![American Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:35 pm
JAX
- ONT
2 stops8h 15m
Southwest
Tue 8/48:35 am
ONT
- JAX
2 stops8h 05m
Southwest
Deal found 6/26![Southwest logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 7/296:29 pm
JAX
- ONT
2 stops16h 03m
Multiple Airlines
Tue 8/43:40 pm
ONT
- JAX
1 stop25h 05m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$421
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 July 1, 2026.
Search for one-way flight options from Jacksonville to Ontario. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Tue 9/17:05 pm
JAX
- ONT
2 stops26h 56m
Frontier
Deal found 6/30![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/216:29 pm
JAX
- ONT
2 stops16h 03m
Frontier
Deal found 6/28![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 6/28. 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.
Mon 7/276:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 6/28![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 6/28. 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.
Mon 8/106:29 pm
JAX
- ONT
2 stops42h 35m
Frontier
Deal found 6/28![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 8/126:29 pm
JAX
- ONT
2 stops24h 25m
Frontier
Deal found 6/28![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Sun 8/26:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 7/1![Frontier logo]()
$161
This Delta deal was found by Cheapflights users on 6/28. 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 7/217:00 am
JAX
- ONT
1 stop6h 38m
Delta
Deal found 6/28![Delta logo]()
$162
This Southwest deal was found by Cheapflights users on 6/28. 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.
Wed 8/123:35 pm
JAX
- ONT
2 stops8h 20m
Southwest
Deal found 6/28![Southwest logo]()
$167
This Southwest deal was found by Cheapflights users on 6/28. 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.
Mon 8/105:50 am
JAX
- ONT
1 stop6h 25m
Southwest
Deal found 6/28![Southwest logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Tue 9/18:44 pm
JAX
- ONT
3 stops30h 06m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/198:23 pm
JAX
- ONT
2 stops38h 40m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$213
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 July 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $323 (American Airlines) |
One-way from | $141 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $476 |
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 2,558,603 searches. Data last updated July 1, 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 - ONT
JAXONT
Jacksonville
Wed 7/29
5:35 pm-10:50 pm
2 stops8h 15m
Ontario
Tue 8/4
8:35 am-7:40 pm
2 stops8h 05m
$390
Quickest round-trip
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 10/23
4:30 pm-11:15 pm
2 stops9h 45m
Ontario
Mon 10/26
2:40 pm-11:30 pm
1 stop5h 50m
$423
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 9/18
4:50 pm-10:10 pm
1 stop8h 20m
Ontario
Mon 9/21
5:15 am-6:35 pm
2 stops10h 20m
$423
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Tue 7/21
4:14 pm-9:50 pm
1 stop8h 36m
Ontario
Thu 7/23
10:00 pm-9:36 am
1 stop8h 36m
$430
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Mon 8/17
4:10 pm-9:52 pm
1 stop8h 42m
Ontario
Mon 8/24
10:00 pm-10:11 am
1 stop9h 11m
$479
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Sun 7/26
6:30 am-1:00 pm
2 stops9h 30m
Ontario
Thu 7/30
9:40 pm-10:20 am
1 stop9h 40m
$482
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Wed 8/26
4:45 pm-10:35 pm
1 stop8h 50m
Ontario
Mon 8/31
7:00 am-7:25 pm
1 stop9h 25m
$506
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 7/24
2:15 pm-10:25 pm
1 stop11h 10m
Ontario
Thu 7/30
5:15 am-6:50 pm
2 stops10h 35m
$512
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 8/14
4:45 pm-10:35 pm
1 stop8h 50m
Ontario
Wed 8/19
7:00 am-7:25 pm
1 stop9h 25m
$528
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Tue 10/20
9:25 am-5:41 pm
2 stops11h 16m
Ontario
Wed 10/21
7:00 am-7:09 pm
1 stop9h 09m
$529
Showing 1-10 of 22 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 July.
| 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, September is the cheapest month in which you can book a flight from Jacksonville to Ontario (average of $381). 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?
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 July 1, 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.
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
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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 2,558,603 searches. Data last updated July 1, 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$331 | Average$446 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$335 | Average$476 | FlexibilityNo cancel fee | On-time71% |