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Cheap flights from Ontario to Jacksonville from $176

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Jacksonville departing on 7/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Jacksonville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
10:00 am - 9:05 pm
ONT
-
JAX
8h 05m
1 stop
Southwest Logo
2:05 pm - 6:55 pm
JAX
-
ONT
7h 50m
1 stop
$316Southwest
Mon, Aug 17 - Tue, Aug 18
Southwest Logo
11:00 am - 9:45 pm
ONT
-
JAX
7h 45m
1 stop
Southwest Logo
6:45 am - 12:40 pm
JAX
-
ONT
8h 55m
2 stops
$321Southwest
Mon, Aug 17 - Tue, Aug 18
Southwest Logo
5:15 am - 6:35 pm
ONT
-
JAX
10h 20m
2 stops
Southwest Logo
3:35 pm - 8:55 pm
JAX
-
ONT
8h 20m
2 stops
$326Southwest
Mon, Aug 17 - Tue, Aug 18
Southwest Logo
7:25 am - 7:40 pm
ONT
-
JAX
9h 15m
1 stop
Southwest Logo
4:50 pm - 10:10 pm
JAX
-
ONT
8h 20m
1 stop
$348Southwest
Tue, Aug 25 - Fri, Aug 28
American Airlines Logo
1:11 pm - 11:15 pm
ONT
-
JAX
7h 04m
1 stop
American Airlines Logo
7:41 pm - 11:59 pm
JAX
-
ONT
7h 18m
1 stop
$351American Airlines
Wed, Jul 15 - Tue, Jul 21
Southwest Logo
5:45 am - 5:55 pm
ONT
-
JAX
9h 10m
2 stops
Southwest Logo
5:50 am - 9:15 am
JAX
-
ONT
6h 25m
1 stop
$353Southwest
Tue, Aug 25 - Fri, Aug 28
Southwest Logo
5:45 am - 5:55 pm
ONT
-
JAX
9h 10m
2 stops
Southwest Logo
4:50 pm - 10:05 pm
JAX
-
ONT
8h 15m
2 stops
$358Southwest
Tue, Aug 25 - Fri, Aug 28
Southwest Logo
7:00 am - 6:10 pm
ONT
-
JAX
8h 10m
1 stop
Southwest Logo
8:55 am - 2:25 pm
JAX
-
ONT
8h 30m
1 stop
$369Southwest
Sun, Sep 13 - Wed, Sep 23
Southwest Logo
2:40 pm - 11:30 pm
ONT
-
JAX
5h 50m
1 stop
Southwest Logo
5:10 am - 9:25 am
JAX
-
ONT
7h 15m
1 stop
$370Southwest
Thu, Oct 1 - Thu, Oct 8
Southwest Logo
5:35 am - 6:10 pm
ONT
-
JAX
9h 35m
2 stops
Southwest Logo
8:55 am - 2:25 pm
JAX
-
ONT
8h 30m
1 stop
$374Southwest
Sun, Sep 13 - Wed, Sep 23

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Delta flights from Ontario to Jacksonville

Our best Delta deals on Ontario to Jacksonville flight tickets
Delta
Jul 14
ONT10:00 pmOntario
8h 36m
1 stop
JAX9:36 amJacksonville
Jul 21
JAX5:40 pmJacksonville
7h 10m
1 stop
ONT9:50 pmOntario
$385
Delta
Sep 24
ONT11:59 amOntario
8h 50m
1 stop
JAX11:49 pmJacksonville
Sep 27
JAX6:54 pmJacksonville
6h 32m
1 stop
ONT10:26 pmOntario
$395
Delta
Jul 31
ONT10:00 pmOntario
8h 37m
1 stop
JAX9:37 amJacksonville
Aug 8
JAX7:05 amJacksonville
6h 37m
1 stop
ONT10:42 amOntario
$423

Southwest flights from Ontario to Jacksonville

Our best Southwest deals on Ontario to Jacksonville flight tickets
Southwest
Aug 17
ONT10:00 amOntario
8h 05m
1 stop
JAX9:05 pmJacksonville
Aug 18
JAX2:05 pmJacksonville
7h 50m
1 stop
ONT6:55 pmOntario
$316
Southwest
Aug 17
ONT11:00 amOntario
7h 45m
1 stop
JAX9:45 pmJacksonville
Aug 18
JAX6:45 amJacksonville
8h 55m
2 stops
ONT12:40 pmOntario
$321
Southwest
Aug 17
ONT5:15 amOntario
10h 20m
2 stops
JAX6:35 pmJacksonville
Aug 18
JAX3:35 pmJacksonville
8h 20m
2 stops
ONT8:55 pmOntario
$326

momondo 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, momondo users made 832,500 searches. Data last updated June 10, 2026.
Use the filters below to find and compare flights from Ontario to Jacksonville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Mon 8/17

10:00 am-9:05 pm

1 stop8h 05m

Jacksonville

Tue 8/18

2:05 pm-6:55 pm

1 stop7h 50m

$316

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Mon 8/17

11:00 am-9:45 pm

1 stop7h 45m

Jacksonville

Tue 8/18

6:45 am-12:40 pm

2 stops8h 55m

$321

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Mon 8/17

5:15 am-6:35 pm

2 stops10h 20m

Jacksonville

Tue 8/18

3:35 pm-8:55 pm

2 stops8h 20m

$326

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Tue 8/25

7:25 am-7:40 pm

1 stop9h 15m

Jacksonville

Fri 8/28

4:50 pm-10:10 pm

1 stop8h 20m

$348

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Wed 7/15

1:11 pm-11:15 pm

1 stop7h 04m

Jacksonville

Tue 7/21

7:41 pm-11:59 pm

1 stop7h 18m

$351

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Tue 8/25

5:45 am-5:55 pm

2 stops9h 10m

Jacksonville

Fri 8/28

5:50 am-9:15 am

1 stop6h 25m

$353

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Tue 8/25

5:45 am-5:55 pm

2 stops9h 10m

Jacksonville

Fri 8/28

4:50 pm-10:05 pm

2 stops8h 15m

$358

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Sun 9/13

7:00 am-6:10 pm

1 stop8h 10m

Jacksonville

Wed 9/23

8:55 am-2:25 pm

1 stop8h 30m

$369
Quickest round-trip

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Thu 10/1

2:40 pm-11:30 pm

1 stop5h 50m

Jacksonville

Thu 10/8

5:10 am-9:25 am

1 stop7h 15m

$370

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Sun 9/13

5:35 am-6:10 pm

2 stops9h 35m

Jacksonville

Wed 9/23

8:55 am-2:25 pm

1 stop8h 30m

$374

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Jacksonville from

How to get the cheapest flight ticket from Ontario to Jacksonville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Ontario and Jacksonville?

What is the cheapest month to fly to Jacksonville?

If you are unable to visit Jacksonville during the month of January, then departing from Ontario during the month June is also very affordable. Most momondo users find prices during this month for around $372.

What is the cheapest day to depart on your flight to Jacksonville?

According to our data, Friday is the cheapest day to fly to Jacksonville from Ontario. The lowest ticket price found for a Friday departure recently was $268. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Saturday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $518.

What is the cheapest time of day to depart on your flight to Jacksonville?

Flying to Jacksonville from Ontario at noon is the least expensive time of day to depart. momondo users have found prices as low as $274 when looking at flights departing at noon. Flights to Jacksonville are more costly in the morning, with an average ticket price of $348. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Jacksonville from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Jacksonville for around $459 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Jacksonville from Ontario for as low as $296 on momondo.

How have Ontario to Jacksonville flight prices changed over time?

As of June 2026, prices for Ontario to Jacksonville flights are approximately 20% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Jacksonville

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Jacksonville according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Jacksonville (ONT to JAX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Jacksonville

Fastest flight time

6h 23m

Direct flights

None
The fastest flight from Ontario to Jacksonville takes 6h 23m
There are no direct flights from Ontario to Jacksonville. There are no popular flight routes from Ontario to Jacksonville.
Search flight deals

Frequently asked questions about flying from Ontario to Jacksonville

  • How far is Ontario to Jacksonville by plane?

    The distance between Ontario and Jacksonville is about 2108.0 mi. By plane, this route typically takes 6h 23m.

  • When did momondo last update prices for flights from Ontario Airport to Jacksonville Airport?

    Prices for flights from Ontario Airport to Jacksonville Airport were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to Jacksonville Airport?

  • How old do you have to be to fly from Ontario Airport to Jacksonville Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Jacksonville Airport.

  • What documentation or ID do you need to fly to Jacksonville Airport?

    The travel and health documents required for your trip to Jacksonville Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Jacksonville Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Ontario to Jacksonville?

Best airlines flying from Ontario to Jacksonville

Compare and see reviews for airlines that fly from Ontario to Jacksonville with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $330Free CancellationRating
7.4
9,804 reviews
Search United Airlines flights
American AirlinesPriceFrom $334Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights
DeltaPriceFrom $342Free CancellationRating
7.9
8,396 reviews
Search Delta flights
SouthwestPriceFrom $347Free CancellationRating
7.9
4,237 reviews
Search Southwest flights

Traveling to a place near Jacksonville?

Book flights to Jacksonville if you plan to visit one of these locations
Fernandina Beach
Jacksonville Beach
Orange Park
Kingsland
Waycross
Ponte Vedra Beach
Atlantic Beach
Neptune Beach
St Johns
Yulee
Cumberland Island

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Jacksonville?

It is quick and easy to find Ontario to Jacksonville flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Jacksonville that suits you.

Can I find flights from Ontario to Jacksonville with flexible booking policies on momondo?

Flights from Ontario to Jacksonville with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Jacksonville?

momondo helps you find the best flight between Ontario and Jacksonville by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Jacksonville right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Jacksonville, momondo offers a useful price alert feature which will track prices for flights to Jacksonville from Ontario and alert you when they change.

An easier way to manage your Jacksonville trip

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