$176+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ONT
Jul 10 — Jul 171
Round-trip
1 adult, Economy
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Find cheap flights from Jacksonville to Ontario with Cheapflights
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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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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 10, 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 10, 2026.
This Delta deal was found by Cheapflights users on 6/8. 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 8/187:05 am
JAX
- ONT
1 stop6h 37m
Delta
Tue 9/112:00 pm
ONT
- JAX
1 stop6h 43m
Delta
Deal found 6/8![Delta logo]()
$261
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:00 am
JAX
- ONT
1 stop9h 31m
American Airlines
Tue 9/110:29 am
ONT
- JAX
1 stop8h 47m
American Airlines
Deal found 6/10![American Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 6/8. 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 7/72:50 pm
JAX
- ONT
1 stop6h 40m
Delta
Tue 7/1410:00 pm
ONT
- JAX
1 stop8h 36m
Delta
Deal found 6/8![Delta logo]()
$351
This Southwest deal was found by Cheapflights users on 6/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/144:30 pm
JAX
- ONT
2 stops8h 15m
Southwest
Tue 8/187:25 am
ONT
- JAX
1 stop9h 15m
Southwest
Deal found 6/9![Southwest logo]()
$353
This Delta deal was found by Cheapflights users on 6/8. 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 7/47:00 am
JAX
- ONT
1 stop6h 40m
Delta
Tue 7/1410:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Deal found 6/8![Delta logo]()
$356
This Delta deal was found by Cheapflights users on 6/9. 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.
Fri 9/186:54 pm
JAX
- ONT
1 stop6h 32m
Delta
Mon 9/2110:00 pm
ONT
- JAX
1 stop7h 37m
Delta
Deal found 6/9![Delta logo]()
$366
This Southwest deal was found by Cheapflights users on 6/5. 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 8/314:50 pm
JAX
- ONT
1 stop8h 20m
Southwest
Sun 9/611:55 pm
ONT
- JAX
2 stops10h 30m
Southwest
Deal found 6/5![Southwest logo]()
$376
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 10, 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 10, 2026.
This Southwest deal was found by Cheapflights users on 6/5. 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 8/314:50 pm
JAX
- ONT
1 stop8h 20m
Southwest
Sun 9/611:55 pm
ONT
- JAX
2 stops10h 30m
Southwest
Deal found 6/5![Southwest logo]()
$376
This Delta deal was found by Cheapflights users on 6/6. 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 8/1812:02 pm
JAX
- ONT
2 stops14h 32m
Delta
Tue 9/16:00 am
ONT
- JAX
2 stops11h 14m
Delta
Deal found 6/6![Delta logo]()
$421
This United Airlines deal was found by Cheapflights users on 6/8. 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 10/274:20 pm
JAX
- ONT
1 stop7h 00m
United Airlines
Wed 10/281:00 pm
ONT
- JAX
1 stop7h 02m
United Airlines
Deal found 6/8![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 6/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:25 am
JAX
- ONT
2 stops9h 00m
Southwest
Mon 9/2110:00 am
ONT
- JAX
1 stop8h 05m
Southwest
Deal found 6/9![Southwest logo]()
$429
This Southwest deal was found by Cheapflights users on 6/7. 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 7/205:35 am
JAX
- ONT
1 stop6h 20m
Southwest
Tue 7/215:45 am
ONT
- JAX
1 stop9h 25m
Southwest
Deal found 6/7![Southwest logo]()
$439
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:25 am
JAX
- ONT
2 stops11h 46m
United Airlines
Sun 9/66:00 am
ONT
- JAX
1 stop6h 39m
United Airlines
Deal found 6/10![United Airlines logo]()
$534
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:15 pm
JAX
- ONT
1 stop7h 06m
United Airlines
Thu 11/265:00 am
ONT
- JAX
1 stop7h 17m
United Airlines
Deal found 6/9![United Airlines logo]()
$535
This Southwest deal was found by Cheapflights users on 6/7. 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 11/206:35 am
JAX
- ONT
2 stops9h 25m
Southwest
Fri 11/276:55 am
ONT
- JAX
2 stops10h 30m
Southwest
Deal found 6/7![Southwest logo]()
$487
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/184:45 pm
JAX
- ONT
1 stop8h 50m
United Airlines
Wed 8/195:00 am
ONT
- JAX
1 stop13h 46m
United Airlines
Deal found 6/9![United Airlines logo]()
$558
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/33:23 pm
JAX
- ONT
1 stop8h 19m
United Airlines
Sat 7/45:00 am
ONT
- JAX
1 stop7h 39m
United Airlines
Deal found 6/8![United Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 6/7. 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 6/7![United Airlines logo]()
$579
Last-minute flights from Jacksonville to OntarioDiscover last-minute flight deals from Jacksonville to Ontario. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Ontario. Data last updated June 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/8. 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 7/47:00 am
JAX
- ONT
1 stop6h 40m
Delta
Tue 7/1410:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Deal found 6/8![Delta logo]()
$356
This Delta deal was found by Cheapflights users on 6/8. 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 7/47:00 am
JAX
- ONT
1 stop6h 40m
Delta
Fri 7/1710:00 pm
ONT
- JAX
1 stop8h 37m
Delta
Deal found 6/8![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 6/8. 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 7/45:30 am
JAX
- ONT
1 stop8h 10m
Delta
Wed 7/1510:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Deal found 6/8![Delta logo]()
$435
This Delta deal was found by Cheapflights users on 6/8. 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 7/72:50 pm
JAX
- ONT
1 stop6h 40m
Delta
Tue 7/1410:00 pm
ONT
- JAX
1 stop8h 36m
Delta
Deal found 6/8![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 6/8. 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 7/72:50 pm
JAX
- ONT
1 stop6h 40m
Delta
Sun 7/1210:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Deal found 6/8![Delta logo]()
$414
This Delta deal was found by Cheapflights users on 6/8. 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 7/72:50 pm
JAX
- ONT
1 stop6h 40m
Delta
Wed 7/1510:00 pm
ONT
- JAX
1 stop7h 36m
Delta
Deal found 6/8![Delta logo]()
$430
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/92:50 pm
JAX
- ONT
2 stops10h 25m
Southwest
Wed 8/58:35 am
ONT
- JAX
2 stops8h 05m
Southwest
Deal found 6/5![Southwest logo]()
$424
This American Airlines deal was found by Cheapflights users on 6/7. 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 7/115:52 am
JAX
- ONT
1 stop6h 37m
American Airlines
Sat 7/1810:10 pm
ONT
- JAX
1 stop7h 19m
American Airlines
Deal found 6/7![American Airlines logo]()
$401
This Delta deal was found by Cheapflights users on 6/8. 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 7/284:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Fri 8/710:00 pm
ONT
- JAX
1 stop8h 37m
Delta
Deal found 6/8![Delta logo]()
$426
This Delta deal was found by Cheapflights users on 6/8. 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 7/284:14 pm
JAX
- ONT
1 stop8h 36m
Delta
Mon 8/310:00 pm
ONT
- JAX
2 stops22h 11m
Delta
Deal found 6/8![Delta logo]()
$431
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 10, 2026.
Search for one-way flight options from Jacksonville to Ontario. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This Delta deal was found by Cheapflights users on 6/8. 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 7/72:50 pm
JAX
- ONT
1 stop6h 40m
Delta
Deal found 6/8![Delta logo]()
$176
This Delta deal was found by Cheapflights users on 6/9. 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.
Fri 7/35:38 pm
JAX
- ONT
1 stop7h 10m
Delta
Deal found 6/9![Delta logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 6/288:20 pm
JAX
- ONT
2 stops45h 48m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$185
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/49:20 am
JAX
- ONT
2 stops12h 13m
United Airlines
Deal found 6/9![United Airlines logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 7/206:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 6/7![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 6/9![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/29:23 am
JAX
- ONT
2 stops32h 45m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:28 pm
JAX
- ONT
2 stops23h 40m
Frontier
Deal found 6/9![Frontier logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:28 pm
JAX
- ONT
2 stops23h 40m
Frontier
Deal found 6/9![Frontier logo]()
$233
This Southwest deal was found by Cheapflights users on 6/6. 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 7/72:55 pm
JAX
- ONT
1 stop10h 40m
Southwest
Deal found 6/6![Southwest logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:29 pm
JAX
- ONT
2 stops40h 03m
Frontier
Deal found 6/9![Frontier logo]()
$239
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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $261 (Delta) |
One-way from | $176 (Delta) |
Popular in | December |
Cheapest in | September |
Average price | $437 |
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 10, 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
Mon 8/31
4:50 pm-10:10 pm
1 stop8h 20m
Ontario
Sun 9/6
11:55 pm-1:25 pm
2 stops10h 30m
$376
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Tue 8/18
12:02 pm-11:34 pm
2 stops14h 32m
Ontario
Tue 9/1
6:00 am-8:14 pm
2 stops11h 14m
$421
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 9/18
7:25 am-1:25 pm
2 stops9h 00m
Ontario
Mon 9/21
10:00 am-9:05 pm
1 stop8h 05m
$429
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Mon 7/20
5:35 am-8:55 am
1 stop6h 20m
Ontario
Tue 7/21
5:45 am-6:10 pm
1 stop9h 25m
$439
Quickest round-trip
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Tue 10/27
4:20 pm-8:20 pm
1 stop7h 00m
Ontario
Wed 10/28
1:00 pm-11:02 pm
1 stop7h 02m
$447
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 11/20
6:35 am-1:00 pm
2 stops9h 25m
Ontario
Fri 11/27
6:55 am-8:25 pm
2 stops10h 30m
$487
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 8/28
9:25 am-6:11 pm
2 stops11h 46m
Ontario
Sun 9/6
6:00 am-3:39 pm
1 stop6h 39m
$534
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 11/20
5:15 pm-9:21 pm
1 stop7h 06m
Ontario
Thu 11/26
5:00 am-3:17 pm
1 stop7h 17m
$535
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Tue 8/18
4:45 pm-10:35 pm
1 stop8h 50m
Ontario
Wed 8/19
5:00 am-9:46 pm
1 stop13h 46m
$558
JacksonvilleOntario
JAX - ONT
JAXONT
Jacksonville
Fri 7/3
3:23 pm-8:42 pm
1 stop8h 19m
Ontario
Sat 7/4
5:00 am-3:39 pm
1 stop7h 39m
$559
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 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 $372). Flying from Jacksonville to Ontario in December is currently the most expensive (average of $722). 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 10, 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.
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
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 10, 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$472 | FlexibilityNo cancel fee | On-time71% |