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$170+ Cheap flights from Ontario to Jacksonville (ONT - JAX)

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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — JAX
fev 27 — mar 61
sex 2/27
sex 3/6
1 adult, Economy
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Cheap flight deals from Ontario to Jacksonville

Cheapest flights from Ontario to Jacksonville
Explore the most affordable flight options available from Ontario to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janeiro 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
ter 2/172:06 pm
ONT
-
JAX
1 stop26h 53m
Multiple Airlines
qua 2/257:56 pm
JAX
-
ONT
2 stops21h 33m
Multiple Airlines
Deal found 1/26$289
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
sex 2/209:43 pm
ONT
-
JAX
1 stop19h 16m
Multiple Airlines
sex 2/278:12 pm
JAX
-
ONT
2 stops30h 47m
Multiple Airlines
Deal found 1/26$294
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
sex 2/209:43 pm
ONT
-
JAX
1 stop19h 16m
Multiple Airlines
seg 2/237:24 pm
JAX
-
ONT
2 stops29h 10m
Multiple Airlines
Deal found 1/26$310
This Southwest deal was found by Cheapflights users on 1/26. 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.
ter 2/246:50 am
ONT
-
JAX
1 stop7h 00m
Southwest
ter 3/35:50 am
JAX
-
ONT
1 stop7h 30m
Southwest
Deal found 1/26$359
This Delta deal was found by Cheapflights users on 1/26. 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.
sáb 2/2110:20 pm
ONT
-
JAX
1 stop7h 24m
Delta
ter 2/247:30 am
JAX
-
ONT
1 stop7h 32m
Delta
Deal found 1/26$367
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
ter 2/103:22 pm
ONT
-
JAX
2 stops24h 09m
Multiple Airlines
sáb 2/149:39 am
JAX
-
ONT
1 stop12h 35m
Multiple Airlines
Deal found 1/26$376
This Southwest deal was found by Cheapflights users on 1/26. 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.
qua 2/259:00 pm
ONT
-
JAX
2 stops10h 25m
Southwest
qua 3/41:35 pm
JAX
-
ONT
2 stops10h 10m
Southwest
Deal found 1/26$377
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 2/179:53 am
ONT
-
JAX
2 stops11h 06m
American Airlines
qua 2/256:00 am
JAX
-
ONT
2 stops10h 49m
American Airlines
Deal found 1/26$378

Find flight deals from Ontario to Jacksonville

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Jacksonville (JAX). 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 janeiro 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$289
(Kiwi.com)

One-way from

$170
(Trip.com)

Popular in

November

Cheapest in

January

Average price

$368
Provider with most accurate pricing for Ontario-Jacksonville flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Jacksonville flights.
Search Deals
From Ontario to Jacksonville
Search Deals
One-way flight from Ontario to Jacksonville
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Jacksonville 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 janeiro 28, 2026.
Use the filters below to find and compare flights from Ontario to Jacksonville that are best for you.

Fly from

Ontario

Fly to

Jacksonville

Route

Depart

Return

Price

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

ter 3/24

6:00 am-4:16 pm

1 stop7h 16m

Jacksonville

ter 3/31

5:27 pm-9:50 pm

1 stop7h 23m

$359

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

ter 2/24

6:50 am-4:50 pm

1 stop7h 00m

Jacksonville

ter 3/3

5:50 am-10:20 am

1 stop7h 30m

$359

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

ter 3/24

9:55 pm-10:35 am

1 stop9h 40m

Jacksonville

ter 3/31

3:40 pm-10:35 pm

2 stops9h 55m

$364

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

sáb 2/21

10:20 pm-8:44 am

1 stop7h 24m

Jacksonville

ter 2/24

7:30 am-12:02 pm

1 stop7h 32m

$367

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

qui 2/19

1:15 pm-10:58 pm

1 stop6h 43m

Jacksonville

ter 2/24

4:01 pm-9:05 pm

1 stop8h 04m

$376

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

qua 4/15

2:08 pm-11:44 pm

1 stop6h 36m

Jacksonville

sáb 4/25

3:52 pm-11:46 pm

2 stops10h 54m

$377

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

qua 2/25

9:00 pm-10:25 am

2 stops10h 25m

Jacksonville

qua 3/4

1:35 pm-8:45 pm

2 stops10h 10m

$377

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

seg 3/23

11:59 pm-12:03 pm

1 stop9h 04m

Jacksonville

sáb 3/28

5:00 am-10:06 am

1 stop8h 06m

$385

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

dom 2/22

6:10 am-6:39 pm

2 stops33h 29m

$170

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

qua 5/6

12:55 pm-10:10 pm

1 stop6h 15m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 19 results
1
2

Compare providers for flights from Ontario to Jacksonville

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 Ontario to Jacksonville in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Jacksonville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Jacksonville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Jacksonville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Jacksonville 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 Ontario-Jacksonville 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 Ontario to Jacksonville

Have a flexible travel schedule? Discover the best time to fly to Jacksonville from Ontario with our price prediction graph.
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 Ontario to Jacksonville

How far ahead should I book a flight from Ontario to Jacksonville?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Jacksonville. Price data was last updated on January 23, 2026.

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Jacksonville. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario to Jacksonville?

Currently, April is the cheapest month in which you can book a flight from Ontario to Jacksonville (average of $80). Flying from Ontario to Jacksonville in July is currently the most expensive (average of $328). 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.

Reviews of airlines servicing Jacksonville

Get insights into the airlines that provide service to Jacksonville. 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 Jacksonville. Reviews last updated janeiro 28, 2026.
See what other customers who have flown with Southwest, Delta, and United Airlines from Ontario to Jacksonville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,267 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,124 reviews
Southwest
8.0
Very good
4,267 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
United Airlines
7.4
Good
9,212 reviews
Southwest
8.0
Very good
4,267 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.2
Good
11,201 reviews
Southwest
8.0
Very good
4,267 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Jacksonville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Jacksonville?

    There are many flights that can get you from Ontario to Jacksonville in 7h. Fly via United Airlines, Southwest, or Delta to get the fastest option. Airlines will cover a distance of 2100 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Jacksonville round-trip?

    Flying on Delta is currently your cheapest option to Jacksonville, with prices starting at $302. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $306 and $330, respectively. These flights start at 33% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Jacksonville one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $141. However, be on the lookout for offers from American Airlines and Southwest, as they are both options that can get you from Ontario to Jacksonville for a low price.

  • Can I find deals for flights from Ontario to Jacksonville that include hotel bookings?

    Yes. In addition to deals on Ontario to Jacksonville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Jacksonville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Jacksonville.

  • Can I find deals for business class flights from Ontario to Jacksonville?

    Yes. Cheapflights offers flight deals from Ontario to Jacksonville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Jacksonville?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Jacksonville (average of $80). Flying from Ontario to Jacksonville in July is currently the most expensive (average of $328). 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.

See more FAQs

Traveling to a place near Jacksonville?

Book flights to Jacksonville if you plan to visit one of these locations
Jacksonville Beach
Orange Park
Fernandina Beach
Kingsland
Waycross
Yulee

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Top 4 airlines flying from Ontario to Jacksonville

Discover the top 4 airlines that operate flights from Ontario to Jacksonville. 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 janeiro 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$302Average$453FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$306Average$445FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$330Average$496FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$342Average$436FlexibilityNo cancel feeOn-time63%

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