$134+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ONT
Sep 13 — Sep 201
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
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
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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 August 14, 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 August 14, 2026.
This Delta deal was found by Cheapflights users on 8/13. 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.
Sat 9/192:32 pm -
1 stop7h 09m
Thu 10/110:00 pm -
1 stop7h 37m
Deal found 8/13![Delta logo]()
$267
This Delta deal was found by Cheapflights users on 8/11. 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.
Sat 9/192:32 pm -
1 stop7h 09m
Mon 9/2110:00 pm -
1 stop7h 37m
Deal found 8/11![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 8/13. 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.
Sat 9/197:15 am -
1 stop6h 50m
Mon 9/2810:00 pm -
1 stop9h 08m
Deal found 8/13![Delta logo]()
$303
This Delta deal was found by Cheapflights users on 8/11. 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 9/93:54 pm -
1 stop7h 30m
Tue 9/2212:17 pm -
1 stop8h 41m
Deal found 8/11![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 8/13. 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 9/185:50 am -
1 stop6h 25m
Tue 9/295:45 am -
2 stops9h 10m
Deal found 8/13![Southwest logo]()
$308
This Delta deal was found by Cheapflights users on 8/11. 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 9/286:59 pm -
1 stop6h 25m
Mon 10/510:00 pm -
1 stop7h 39m
Deal found 8/11![Delta logo]()
$312
This Delta deal was found by Cheapflights users on 8/11. 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 -
1 stop7h 50m
Sat 9/1912:17 pm -
1 stop8h 41m
Deal found 8/11![Delta logo]()
$322
This American Airlines deal was found by Cheapflights users on 8/11. 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 10/147:49 pm -
1 stop7h 03m
Mon 10/1911:59 pm -
1 stop7h 59m
Deal found 8/11![American Airlines logo]()
$340
This Delta deal was found by Cheapflights users on 8/13. 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 9/157:15 am -
1 stop6h 50m
Thu 10/110:00 pm -
1 stop7h 37m
Deal found 8/13![Delta logo]()
$343
This Delta deal was found by Cheapflights users on 8/11. 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 9/186:59 pm -
1 stop6h 25m
Mon 9/2110:00 pm -
1 stop9h 08m
Deal found 8/11![Delta logo]()
$344
This Southwest deal was found by Cheapflights users on 8/11. 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 9/112:00 pm -
1 stop9h 25m
Tue 9/158:35 am -
2 stops8h 10m
Deal found 8/11![Southwest logo]()
$345
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 August 14, 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 August 14, 2026.
This Southwest deal was found by Cheapflights users on 8/13. 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 9/185:50 am -
1 stop6h 25m
Tue 9/295:45 am -
2 stops9h 10m
Deal found 8/13![Southwest logo]()
$308
This Delta deal was found by Cheapflights users on 8/11. 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 9/186:59 pm -
1 stop6h 25m
Mon 9/2110:00 pm -
1 stop9h 08m
Deal found 8/11![Delta logo]()
$344
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/243:00 pm -
1 stop8h 58m
Tue 10/276:00 am -
1 stop6h 09m
Deal found 8/13![United Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 8/10. 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 10/175:35 am -
1 stop7h 05m
Sat 10/245:30 am -
2 stops8h 25m
Deal found 8/10![Southwest logo]()
$344
This Southwest deal was found by Cheapflights users on 8/11. 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 9/112:00 pm -
1 stop9h 25m
Tue 9/158:35 am -
2 stops8h 10m
Deal found 8/11![Southwest logo]()
$345
This Delta deal was found by Cheapflights users on 8/13. 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 9/173:54 pm -
1 stop9h 30m
Sat 9/1912:17 pm -
1 stop8h 41m
Deal found 8/13![Delta logo]()
$413
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/119:25 am -
2 stops13h 36m
Thu 11/266:00 am -
1 stop7h 23m
Deal found 8/12![United Airlines logo]()
$432
This Delta deal was found by Cheapflights users on 8/13. 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 9/205:34 pm -
1 stop7h 50m
Fri 9/2510:00 pm -
1 stop8h 37m
Deal found 8/13![Delta logo]()
$413
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/154:45 pm -
1 stop9h 14m
Sat 9/195:00 am -
1 stop7h 33m
Deal found 8/11![United Airlines logo]()
$457
This Delta deal was found by Cheapflights users on 8/13. 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 9/173:54 pm -
1 stop9h 30m
Sun 9/2710:00 pm -
1 stop7h 37m
Deal found 8/13![Delta logo]()
$487
Last-minute flights from Jacksonville to OntarioDiscover last-minute flight deals from Jacksonville to Ontario. Data last updated August 14, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Ontario. Data last updated August 14, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/11. 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 9/93:54 pm -
1 stop7h 30m
Tue 9/2212:17 pm -
1 stop8h 41m
Deal found 8/11![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 8/11. 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 9/112:00 pm -
1 stop9h 25m
Tue 9/158:35 am -
2 stops8h 10m
Deal found 8/11![Southwest logo]()
$345
This Delta deal was found by Cheapflights users on 8/13. 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 9/157:15 am -
1 stop6h 50m
Thu 10/110:00 pm -
1 stop7h 37m
Deal found 8/13![Delta logo]()
$343
This Delta deal was found by Cheapflights users on 8/11. 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 9/152:29 pm -
1 stop8h 55m
Tue 9/2212:17 pm -
1 stop6h 19m
Deal found 8/11![Delta logo]()
$353
This Southwest deal was found by Cheapflights users on 8/13. 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 9/185:50 am -
1 stop6h 25m
Tue 9/295:45 am -
2 stops9h 10m
Deal found 8/13![Southwest logo]()
$308
This Delta deal was found by Cheapflights users on 8/11. 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 -
1 stop7h 50m
Sat 9/1912:17 pm -
1 stop8h 41m
Deal found 8/11![Delta logo]()
$322
This Delta deal was found by Cheapflights users on 8/11. 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 9/186:59 pm -
1 stop6h 25m
Mon 9/2110:00 pm -
1 stop9h 08m
Deal found 8/11![Delta logo]()
$344
This Delta deal was found by Cheapflights users on 8/13. 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.
Sat 9/192:32 pm -
1 stop7h 09m
Thu 10/110:00 pm -
1 stop7h 37m
Deal found 8/13![Delta logo]()
$267
This Delta deal was found by Cheapflights users on 8/11. 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.
Sat 9/192:32 pm -
1 stop7h 09m
Mon 9/2110:00 pm -
1 stop7h 37m
Deal found 8/11![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 8/13. 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.
Sat 9/197:15 am -
1 stop6h 50m
Mon 9/2810:00 pm -
1 stop9h 08m
Deal found 8/13![Delta logo]()
$303
This Delta deal was found by Cheapflights users on 8/11. 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 9/286:59 pm -
1 stop6h 25m
Mon 10/510:00 pm -
1 stop7h 39m
Deal found 8/11![Delta logo]()
$312
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 August 14, 2026.
Search for one-way flight options from Jacksonville to Ontario. Find affordable one-way fares based on user searches. Data last updated August 14, 2026.
This Southwest deal was found by Cheapflights users on 8/11. 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 9/112:00 pm -
1 stop9h 25m
Deal found 8/11![Southwest logo]()
$134
This Southwest deal was found by Cheapflights users on 8/13. 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 9/2612:25 pm -
2 stops10h 40m
Deal found 8/13![Southwest logo]()
$139
This Delta deal was found by Cheapflights users on 8/11. 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 1/286:30 am -
1 stop7h 57m
Deal found 8/11![Delta logo]()
$156
This Delta deal was found by Cheapflights users on 8/9. 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.
Sat 9/56:00 am -
1 stop7h 42m
Deal found 8/9![Delta logo]()
$162
This Delta deal was found by Cheapflights users on 8/13. 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 -
1 stop7h 50m
Deal found 8/13![Delta logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 9/117:46 pm -
2 stops31h 01m
Deal found 8/11![Frontier logo]()
$172
This United Airlines deal was found by Cheapflights users on 8/13. 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 9/124:45 pm -
1 stop9h 14m
Deal found 8/13![United Airlines logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 9/1110:39 pm -
3 stops46h 09m
Deal found 8/11![Multiple Airlines logo]()
$200
This Delta deal was found by Cheapflights users on 8/13. 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 9/157:15 am -
1 stop6h 50m
Deal found 8/13![Delta logo]()
$210
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/104:45 pm -
1 stop9h 14m
Deal found 8/11![United Airlines logo]()
$211
This United Airlines deal was found by Cheapflights users on 8/12. 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 11/59:20 am -
2 stops13h 55m
Deal found 8/12![United Airlines logo]()
$216
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 August 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $267 (Delta) |
One-way from | $134 (Southwest) |
Popular in | December |
Cheapest in | September |
Average price | $718 |
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 August 14, 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 9/18
5:50 am-9:15 am
1 stop6h 25m
Ontario
Tue 9/29
5:45 am-5:55 pm
2 stops9h 10m
$308
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Fri 9/18
6:59 pm-10:24 pm
1 stop6h 25m
Ontario
Mon 9/21
10:00 pm-10:08 am
1 stop9h 08m
$344
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Sat 10/17
5:35 am-9:40 am
1 stop7h 05m
Ontario
Sat 10/24
5:30 am-4:55 pm
2 stops8h 25m
$344
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Fri 9/11
2:00 pm-8:25 pm
1 stop9h 25m
Ontario
Tue 9/15
8:35 am-7:45 pm
2 stops8h 10m
$345
Quickest round-trip
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Sat 10/24
3:00 pm-8:58 pm
1 stop8h 58m
Ontario
Tue 10/27
6:00 am-3:09 pm
1 stop6h 09m
$377
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Thu 9/17
3:54 pm-10:24 pm
1 stop9h 30m
Ontario
Sat 9/19
12:17 pm-11:58 pm
1 stop8h 41m
$413
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Sun 9/20
5:34 pm-10:24 pm
1 stop7h 50m
Ontario
Fri 9/25
10:00 pm-9:37 am
1 stop8h 37m
$413
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Fri 9/11
9:25 am-8:01 pm
2 stops13h 36m
Ontario
Thu 11/26
6:00 am-4:23 pm
1 stop7h 23m
$432
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Tue 9/15
4:45 pm-10:59 pm
1 stop9h 14m
Ontario
Sat 9/19
5:00 am-3:33 pm
1 stop7h 33m
$457
JacksonvilleOntario
JAX Jacksonville - ONT Ontario
JAXONT
Jacksonville
Thu 9/17
3:54 pm-10:24 pm
1 stop9h 30m
Ontario
Sun 9/27
10:00 pm-8:37 am
1 stop7h 37m
$487
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 August.
| 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?
Airfare is below average for this route at the moment.
Jacksonville to Ontario flights typically cost between $433 and $718 in September.The cheapest round-trip price found within the last 5 days was $267 on Delta (Sep 19-Oct 1).
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 August 14, 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.
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Crew
8.6
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.
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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 August 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$296 | Average$446 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$498 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$331 | Average$446 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$335 | Average$476 | FlexibilityNo cancel fee | On-time71% |