$153+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ONT
Jul 21 — Jul 281
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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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 June 21, 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 June 21, 2026.
This American Airlines deal was found by Cheapflights users on 6/20. 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 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 6/20![American Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 6/21. 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.
Tue 9/12:05 pm
JAX
- ONT
2 stops9h 50m
Southwest
Wed 9/307:25 am
ONT
- JAX
1 stop9h 15m
Southwest
Deal found 6/21![Southwest logo]()
$374
This Delta deal was found by Cheapflights users on 6/18. 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 10/75:05 pm
JAX
- ONT
1 stop8h 09m
Delta
Sat 10/1012:00 pm
ONT
- JAX
1 stop9h 02m
Delta
Deal found 6/18![Delta logo]()
$385
This Delta deal was found by Cheapflights users on 6/17. 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 10/135:30 am
JAX
- ONT
1 stop8h 57m
Delta
Mon 10/1910:59 pm
ONT
- JAX
1 stop6h 48m
Delta
Deal found 6/17![Delta logo]()
$386
This Delta deal was found by Cheapflights users on 6/21. 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 7/282:50 pm
JAX
- ONT
1 stop6h 40m
Delta
Mon 8/310:00 pm
ONT
- JAX
1 stop7h 47m
Delta
Deal found 6/21![Delta logo]()
$423
This Southwest deal was found by Cheapflights users on 6/19. 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 7/212:55 pm
JAX
- ONT
1 stop10h 40m
Southwest
Thu 7/2311:55 pm
ONT
- JAX
1 stop9h 05m
Southwest
Deal found 6/19![Southwest logo]()
$428
This Southwest deal was found by Cheapflights users on 6/16. 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 7/245:20 pm
JAX
- ONT
2 stops9h 15m
Southwest
Tue 7/288:15 am
ONT
- JAX
2 stops9h 55m
Southwest
Deal found 6/16![Southwest logo]()
$433
This Delta deal was found by Cheapflights users on 6/18. 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 7/134:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Tue 7/2110:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Deal found 6/18![Delta logo]()
$453
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 June 21, 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 June 21, 2026.
This Southwest deal was found by Cheapflights users on 6/21. 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.
Tue 9/12:05 pm
JAX
- ONT
2 stops9h 50m
Southwest
Wed 9/307:25 am
ONT
- JAX
1 stop9h 15m
Southwest
Deal found 6/21![Southwest logo]()
$374
This Delta deal was found by Cheapflights users on 6/20. 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.
Thu 8/65:34 pm
JAX
- ONT
1 stop7h 18m
Delta
Sat 8/812:00 pm
ONT
- JAX
1 stop6h 43m
Delta
Deal found 6/20![Delta logo]()
$423
This United Airlines deal was found by Cheapflights users on 6/19. 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 7/184:55 pm
JAX
- ONT
1 stop8h 56m
United Airlines
Wed 8/197:00 am
ONT
- JAX
1 stop9h 25m
United Airlines
Deal found 6/19![United Airlines logo]()
$479
This Southwest deal was found by Cheapflights users on 6/19. 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 7/212:55 pm
JAX
- ONT
1 stop10h 40m
Southwest
Thu 7/2311:55 pm
ONT
- JAX
1 stop9h 05m
Southwest
Deal found 6/19![Southwest logo]()
$428
This Delta deal was found by Cheapflights users on 6/18. 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 8/75:34 pm
JAX
- ONT
1 stop7h 18m
Delta
Fri 8/1410:00 pm
ONT
- JAX
1 stop8h 37m
Delta
Deal found 6/18![Delta logo]()
$477
This United Airlines deal was found by Cheapflights users on 6/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:40 am
JAX
- ONT
1 stop9h 32m
United Airlines
Tue 9/17:00 am
ONT
- JAX
1 stop9h 25m
United Airlines
Deal found 6/20![United Airlines logo]()
$479
This Southwest deal was found by Cheapflights users on 6/19. 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 7/202:50 pm
JAX
- ONT
2 stops10h 50m
Southwest
Mon 7/2011:55 pm
ONT
- JAX
1 stop13h 15m
Southwest
Deal found 6/19![Southwest logo]()
$488
This Delta deal was found by Cheapflights users on 6/18. 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 8/46:00 am
JAX
- ONT
1 stop7h 42m
Delta
Mon 8/1010:00 pm
ONT
- JAX
1 stop7h 47m
Delta
Deal found 6/18![Delta logo]()
$501
This United Airlines deal was found by Cheapflights users on 6/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/134:45 pm
JAX
- ONT
1 stop8h 50m
United Airlines
Thu 8/207:00 am
ONT
- JAX
1 stop9h 25m
United Airlines
Deal found 6/20![United Airlines logo]()
$513
This United Airlines deal was found by Cheapflights users on 6/18. 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 8/315:00 am
ONT
- JAX
1 stop7h 33m
United Airlines
Deal found 6/18![United Airlines logo]()
$533
Last-minute flights from Jacksonville to OntarioDiscover last-minute flight deals from Jacksonville to Ontario. Data last updated June 21, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Ontario. Data last updated June 21, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:11 pm
JAX
- ONT
1 stop7h 23m
American Airlines
Wed 7/151:11 pm
ONT
- JAX
1 stop7h 04m
American Airlines
Deal found 6/21![American Airlines logo]()
$470
This Delta deal was found by Cheapflights users on 6/18. 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 7/134:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Tue 7/2110:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Deal found 6/18![Delta logo]()
$453
This Delta deal was found by Cheapflights users on 6/18. 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 7/144:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Tue 7/2110:00 pm
ONT
- JAX
1 stop8h 36m
Delta
Deal found 6/18![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/19. 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 7/184:55 pm
JAX
- ONT
1 stop8h 56m
United Airlines
Wed 8/197:00 am
ONT
- JAX
1 stop9h 25m
United Airlines
Deal found 6/19![United Airlines logo]()
$479
This Southwest deal was found by Cheapflights users on 6/17. 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 7/205:20 pm
JAX
- ONT
2 stops9h 15m
Southwest
Mon 7/279:45 am
ONT
- JAX
1 stop8h 55m
Southwest
Deal found 6/17![Southwest logo]()
$482
This Southwest deal was found by Cheapflights users on 6/19. 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 7/212:55 pm
JAX
- ONT
1 stop10h 40m
Southwest
Thu 7/2311:55 pm
ONT
- JAX
1 stop9h 05m
Southwest
Deal found 6/19![Southwest logo]()
$428
This Southwest deal was found by Cheapflights users on 6/16. 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 7/245:20 pm
JAX
- ONT
2 stops9h 15m
Southwest
Tue 7/288:15 am
ONT
- JAX
2 stops9h 55m
Southwest
Deal found 6/16![Southwest logo]()
$433
This Delta deal was found by Cheapflights users on 6/21. 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.
Mon 7/274:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Mon 8/310:00 pm
ONT
- JAX
1 stop7h 47m
Delta
Deal found 6/21![Delta logo]()
$477
This Delta deal was found by Cheapflights users on 6/21. 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 7/282:50 pm
JAX
- ONT
1 stop6h 40m
Delta
Mon 8/310:00 pm
ONT
- JAX
1 stop7h 47m
Delta
Deal found 6/21![Delta logo]()
$423
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 June 21, 2026.
Search for one-way flight options from Jacksonville to Ontario. Find affordable one-way fares based on user searches. Data last updated June 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 stops32h 21m
Frontier
Deal found 6/17![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/136:29 pm
JAX
- ONT
2 stops42h 35m
Frontier
Deal found 6/16![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 6/17![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/126:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 6/16![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 6/17![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 7/266:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 6/17![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 7/246:29 pm
JAX
- ONT
2 stops23h 45m
Frontier
Deal found 6/17![Frontier logo]()
$181
This United Airlines deal was found by Cheapflights users on 6/19. 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 8/154:00 pm
JAX
- ONT
1 stop7h 53m
United Airlines
Deal found 6/19![United Airlines logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 stops42h 35m
Frontier
Deal found 6/17![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 7/2710:26 pm
JAX
- ONT
3 stops36h 37m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$192
This United Airlines deal was found by Cheapflights users on 6/17. 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 7/184:23 pm
JAX
- ONT
1 stop8h 32m
United Airlines
Deal found 6/17![United Airlines logo]()
$201
This Delta deal was found by Cheapflights users on 6/18. 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 9/175:29 pm
JAX
- ONT
1 stop7h 57m
Delta
Deal found 6/18![Delta logo]()
$202
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 June 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $369 (American Airlines) |
One-way from | $153 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $448 |
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 June 21, 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
Tue 9/1
2:05 pm-8:55 pm
2 stops9h 50m
Ontario
Wed 9/30
7:25 am-7:40 pm
1 stop9h 15m
$374
Quickest round-trip
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Thu 8/6
5:34 pm-9:52 pm
1 stop7h 18m
Ontario
Sat 8/8
12:00 pm-9:43 pm
1 stop6h 43m
$423
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Tue 7/21
2:55 pm-10:35 pm
1 stop10h 40m
Ontario
Thu 7/23
11:55 pm-12:00 pm
1 stop9h 05m
$428
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 8/7
5:34 pm-9:52 pm
1 stop7h 18m
Ontario
Fri 8/14
10:00 pm-9:37 am
1 stop8h 37m
$477
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Sat 7/18
4:55 pm-10:51 pm
1 stop8h 56m
Ontario
Wed 8/19
7:00 am-7:25 pm
1 stop9h 25m
$479
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Sat 8/29
11:40 am-6:12 pm
1 stop9h 32m
Ontario
Tue 9/1
7:00 am-7:25 pm
1 stop9h 25m
$479
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Mon 7/20
2:50 pm-10:40 pm
2 stops10h 50m
Ontario
Mon 7/20
11:55 pm-4:10 pm
1 stop13h 15m
$488
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Tue 8/4
6:00 am-10:42 am
1 stop7h 42m
Ontario
Mon 8/10
10:00 pm-8:47 am
1 stop7h 47m
$501
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Thu 8/13
4:45 pm-10:35 pm
1 stop8h 50m
Ontario
Thu 8/20
7:00 am-7:25 pm
1 stop9h 25m
$513
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Wed 8/26
4:45 pm-10:35 pm
1 stop8h 50m
Ontario
Mon 8/31
5:00 am-3:33 pm
1 stop7h 33m
$533
Showing 1-10 of 18 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 June.
| 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 June 21, 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
Overall
7.9
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
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 June 21, 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$337 | Average$474 | FlexibilityNo cancel fee | On-time71% |