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Cheap flights from Ontario to Jacksonville from $136

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 5/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to Jacksonville

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 4:13 pm
ONT
-
JAX
7h 13m
1 stop
United Airlines Logo
5:25 pm - 9:58 pm
JAX
-
ONT
7h 33m
1 stop
$306United Airlines
mié., may. 6 - mié., may. 13
Delta Logo
10:15 pm - 8:41 am
ONT
-
JAX
7h 26m
1 stop
Delta Logo
2:40 pm - 6:36 pm
JAX
-
ONT
6h 56m
1 stop
$311Delta
mié., may. 6 - mié., may. 13
United Airlines Logo
5:00 am - 9:50 pm
ONT
-
JAX
13h 50m
2 stops
United Airlines Logo
5:25 pm - 9:58 pm
JAX
-
ONT
7h 33m
1 stop
$312United Airlines
mié., may. 6 - mié., may. 13
United Airlines Logo
6:00 am - 4:13 pm
ONT
-
JAX
7h 13m
1 stop
United Airlines Logo
5:25 pm - 9:58 pm
JAX
-
ONT
7h 33m
1 stop
$317United Airlines
mié., may. 6 - sáb., may. 9
Southwest Logo
10:30 am - 10:15 pm
ONT
-
JAX
8h 45m
2 stops
Southwest Logo
6:30 am - 1:30 pm
JAX
-
ONT
10h 00m
2 stops
$321Southwest
mié., may. 6 - mié., may. 13
Southwest Logo
9:55 pm - 11:05 am
ONT
-
JAX
10h 10m
1 stop
Southwest Logo
7:20 am - 1:15 pm
JAX
-
ONT
8h 55m
1 stop
$322Southwest
lun., abr. 27 - mar., may. 5
United Airlines Logo
5:00 am - 9:50 pm
ONT
-
JAX
13h 50m
2 stops
United Airlines Logo
5:25 pm - 9:58 pm
JAX
-
ONT
7h 33m
1 stop
$323United Airlines
mié., may. 6 - sáb., may. 9
Delta Logo
12:08 pm - 12:22 am
ONT
-
JAX
9h 14m
1 stop
Delta Logo
5:30 pm - 11:34 pm
JAX
-
ONT
9h 04m
2 stops
$327Delta
mié., may. 13 - jue., may. 28
American Airlines Logo
2:08 pm - 11:44 pm
ONT
-
JAX
6h 36m
1 stop
American Airlines Logo
6:05 pm - 10:36 pm
JAX
-
ONT
7h 31m
1 stop
$328American Airlines
mié., may. 13 - jue., may. 28
Delta Logo
9:50 am - 12:22 am
ONT
-
JAX
11h 32m
2 stops
Delta Logo
5:30 pm - 11:34 pm
JAX
-
ONT
9h 04m
2 stops
$332Delta
mié., may. 13 - jue., may. 28

United Airlines flights from Ontario to Jacksonville

Our best United Airlines deals on Ontario to Jacksonville flight tickets
United Airlines
May 6
ONT6:00 amOntario
7h 13m
1 stop
JAX4:13 pmJacksonville
May 13
JAX5:25 pmJacksonville
7h 33m
1 stop
ONT9:58 pmOntario
$306
United Airlines
May 6
ONT5:00 amOntario
13h 50m
2 stops
JAX9:50 pmJacksonville
May 13
JAX5:25 pmJacksonville
7h 33m
1 stop
ONT9:58 pmOntario
$312
United Airlines
May 6
ONT6:00 amOntario
7h 13m
1 stop
JAX4:13 pmJacksonville
May 9
JAX5:25 pmJacksonville
7h 33m
1 stop
ONT9:58 pmOntario
$317

American Airlines flights from Ontario to Jacksonville

Our best American Airlines deals on Ontario to Jacksonville flight tickets
American Airlines
May 13
ONT2:08 pmOntario
6h 36m
1 stop
JAX11:44 pmJacksonville
May 28
JAX6:05 pmJacksonville
7h 31m
1 stop
ONT10:36 pmOntario
$328
American Airlines
May 23
ONT2:18 pmOntario
6h 24m
1 stop
JAX11:42 pmJacksonville
May 27
JAX7:39 pmJacksonville
7h 20m
1 stop
ONT11:59 pmOntario
$350
American Airlines
May 9
ONT11:59 pmOntario
9h 40m
2 stops
JAX12:39 pmJacksonville
May 16
JAX3:52 pmJacksonville
10h 54m
2 stops
ONT11:46 pmOntario
$351

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 abril 11, 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

mié. 5/6

6:00 am-4:13 pm

1 stop7h 13m

Jacksonville

mié. 5/13

5:25 pm-9:58 pm

1 stop7h 33m

$306

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

mié. 5/6

10:15 pm-8:41 am

1 stop7h 26m

Jacksonville

mié. 5/13

2:40 pm-6:36 pm

1 stop6h 56m

$311

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

mié. 5/6

5:00 am-9:50 pm

2 stops13h 50m

Jacksonville

mié. 5/13

5:25 pm-9:58 pm

1 stop7h 33m

$312

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

mié. 5/6

6:00 am-4:13 pm

1 stop7h 13m

Jacksonville

sáb. 5/9

5:25 pm-9:58 pm

1 stop7h 33m

$317

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

mié. 5/6

10:30 am-10:15 pm

2 stops8h 45m

Jacksonville

mié. 5/13

6:30 am-1:30 pm

2 stops10h 00m

$321

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

lun. 4/27

9:55 pm-11:05 am

1 stop10h 10m

Jacksonville

mar. 5/5

7:20 am-1:15 pm

1 stop8h 55m

$322

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

mié. 5/6

5:00 am-9:50 pm

2 stops13h 50m

Jacksonville

sáb. 5/9

5:25 pm-9:58 pm

1 stop7h 33m

$323

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

mié. 5/13

12:08 pm-12:22 am

1 stop9h 14m

Jacksonville

jue. 5/28

5:30 pm-11:34 pm

2 stops9h 04m

$327
Quickest round-trip

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

mié. 5/13

2:08 pm-11:44 pm

1 stop6h 36m

Jacksonville

jue. 5/28

6:05 pm-10:36 pm

1 stop7h 31m

$328

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

mié. 5/13

9:50 am-12:22 am

2 stops11h 32m

Jacksonville

jue. 5/28

5:30 pm-11:34 pm

2 stops9h 04m

$332

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 May is also very affordable. Most momondo users find prices during this month for around $397.

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 $284. 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, Monday 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 $397.

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 $271 when looking at flights departing at noon. Flights to Jacksonville are more costly in the morning, with an average ticket price of $313. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How have Ontario to Jacksonville flight prices changed over time?

As of April 2026, prices for Ontario to Jacksonville flights are approximately 1% cheaper 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 05m

Direct flights

None
The fastest flight from Ontario to Jacksonville takes 6h 05m
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 05m.

  • 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
American AirlinesPriceFrom $306Free CancellationRating
7.1
11,572 reviews
Search American Airlines flights
DeltaPriceFrom $326Free CancellationRating
7.9
8,406 reviews
Search Delta flights
United AirlinesPriceFrom $330Free CancellationRating
7.4
9,569 reviews
Search United Airlines flights
SouthwestPriceFrom $342Free CancellationRating
8.0
4,335 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
Ponte Vedra Beach
Waycross
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.

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