What is the cheapest airline that flies from Ontario to Jacksonville?

Frontier, American Airlines, and United Airlines are the most popular carriers operating from Ontario to Jacksonville

What airlines fly to Jacksonville?

American Airlines, Delta and Southwest are the top three most popular airlines that fly to Jacksonville from Ontario according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Jacksonville. Keep in mind that there are 7 different airlines that fly to Jacksonville on a routine basis, so you have a few additional options to choose from.

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?

There are 4 operators available for flights from Ontario Airport to Jacksonville Airport as of November 2025.

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.

$92 Cheap Flights from Ontario to Jacksonville in 2025/26

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Find the cheapest flights from Ontario to Jacksonville

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Cheap round-trip flights

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8:32 am - 6:48 pmONT-JAX

7h 16m1 stop

10:35 am - 12:20 amJAX-ONT

16h 45m2 stops

$238Multiple Airlines

Find Deal

Thu, Jan 15 - Thu, Jan 22

6:00 am - 4:57 pmONT-JAX

31h 57m2 stops

7:44 pm - 1:48 pmJAX-ONT

21h 04m1 stop

$264Frontier

Find Deal

Thu, Jan 8 - Thu, Jan 15

7:00 am - 6:49 pmONT-JAX

32h 49m2 stops

7:44 pm - 1:48 pmJAX-ONT

21h 04m1 stop

$272Frontier

Find Deal

Sat, Jan 10 - Thu, Jan 15

4:16 pm - 6:01 pmONT-JAX

22h 45m1 stop

5:29 pm - 3:21 pmJAX-ONT

24h 52m2 stops

$281Frontier

Find Deal

Thu, Dec 25 - Wed, Dec 31

4:16 pm - 6:01 pmONT-JAX

22h 45m1 stop

8:35 pm - 4:31 pmJAX-ONT

46h 56m2 stops

$295Multiple Airlines

Find Deal

Thu, Dec 25 - Thu, Jan 1

10:18 pm - 7:59 pmONT-JAX

18h 41m1 stop

7:44 pm - 1:48 pmJAX-ONT

21h 04m1 stop

$327Multiple Airlines

Find Deal

Fri, Jan 9 - Thu, Jan 15

8:31 am - 6:51 pmONT-JAX

31h 20m2 stops

7:44 pm - 1:48 pmJAX-ONT

21h 04m1 stop

$335Frontier

Find Deal

Fri, Jan 9 - Thu, Jan 15

1:04 pm - 11:59 pmONT-JAX

7h 55m1 stop

6:30 am - 11:54 amJAX-ONT

8h 24m1 stop

$355Delta

Find Deal

Wed, Jan 14 - Sun, Jan 18

6:00 am - 4:57 pmONT-JAX

31h 57m2 stops

9:39 am - 5:54 pmJAX-ONT

11h 15m1 stop

$358Multiple Airlines

Find Deal

Thu, Jan 8 - Wed, Jan 14

1:09 pm - 12:03 amONT-JAX

7h 54m1 stop

6:30 am - 11:59 amJAX-ONT

8h 29m1 stop

$359Delta

Find Deal

Tue, Mar 3 - Wed, Mar 4

Delta flights from Ontario to Jacksonville

Our best Delta deals on Ontario to Jacksonville flight tickets

Delta

Jan 14

ONT1:04 pmOntario

7h 55m

1 stop

JAX11:59 pmJacksonville

Jan 18

JAX6:30 amJacksonville

8h 24m

1 stop

ONT11:54 amOntario

$355

Find similar

Delta

Mar 3

ONT1:09 pmOntario

7h 54m

1 stop

JAX12:03 amJacksonville

Mar 4

JAX5:30 amJacksonville

9h 29m

1 stop

ONT11:59 amOntario

$359

Find similar

Delta

Jan 14

ONT1:04 pmOntario

7h 55m

1 stop

JAX11:59 pmJacksonville

Jan 18

JAX5:30 amJacksonville

11h 26m

2 stops

ONT1:56 pmOntario

$360

Find similar

Frontier flights from Ontario to Jacksonville

Our best Frontier deals on Ontario to Jacksonville flight tickets

Frontier

Jan 8

ONT6:00 amOntario

31h 57m

2 stops

JAX4:57 pmJacksonville

Jan 15

JAX7:44 pmJacksonville

21h 04m

1 stop

ONT1:48 pmOntario

$264

Find similar

Frontier

Jan 10

ONT7:00 amOntario

32h 49m

2 stops

JAX6:49 pmJacksonville

Jan 15

JAX7:44 pmJacksonville

21h 04m

1 stop

ONT1:48 pmOntario

$272

Find similar

Frontier

Dec 25

ONT4:16 pmOntario

22h 45m

1 stop

JAX6:01 pmJacksonville

Dec 31

JAX5:29 pmJacksonville

24h 52m

2 stops

ONT3:21 pmOntario

$281

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Thu 1/15

8:32 am-6:48 pm

1 stop7h 16m

Jacksonville

Thu 1/22

10:35 am-12:20 am

2 stops16h 45m

$238

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Thu 1/8

6:00 am-4:57 pm

2 stops31h 57m

Jacksonville

Thu 1/15

7:44 pm-1:48 pm

1 stop21h 04m

$264

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Sat 1/10

7:00 am-6:49 pm

2 stops32h 49m

Jacksonville

Thu 1/15

7:44 pm-1:48 pm

1 stop21h 04m

$272

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Thu 12/25

4:16 pm-6:01 pm

1 stop22h 45m

Jacksonville

Wed 12/31

5:29 pm-3:21 pm

2 stops24h 52m

$281

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Thu 12/25

4:16 pm-6:01 pm

1 stop22h 45m

Jacksonville

Thu 1/1

8:35 pm-4:31 pm

2 stops46h 56m

$295

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Fri 1/9

10:18 pm-7:59 pm

1 stop18h 41m

Jacksonville

Thu 1/15

7:44 pm-1:48 pm

1 stop21h 04m

$327

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Fri 1/9

8:31 am-6:51 pm

2 stops31h 20m

Jacksonville

Thu 1/15

7:44 pm-1:48 pm

1 stop21h 04m

$335

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Wed 1/14

1:04 pm-11:59 pm

1 stop7h 55m

Jacksonville

Sun 1/18

6:30 am-11:54 am

1 stop8h 24m

$355

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Thu 1/8

6:00 am-4:57 pm

2 stops31h 57m

Jacksonville

Wed 1/14

9:39 am-5:54 pm

1 stop11h 15m

$358

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Tue 3/3

1:09 pm-12:03 am

1 stop7h 54m

Jacksonville

Wed 3/4

6:30 am-11:59 am

1 stop8h 29m

$359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Jacksonville?

If you are unable to visit Jacksonville during the month of July, then departing from Ontario during the month May is also very affordable. Most momondo users find prices during this month for around $408.

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 $269. 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, Sunday 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 $575.

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 $249 when looking at flights departing at noon. Flights to Jacksonville are more costly in the afternoon, with an average ticket price of $368. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight 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 $463 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 November 2025, prices for Ontario to Jacksonville flights are approximately 36% 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

Direct flights	None

There are no direct flights from Ontario to Jacksonville. There are no popular flight routes from Ontario to Jacksonville.

Search flight deals

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 18m.
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?
There are 4 operators available for flights from Ontario Airport to Jacksonville Airport as of November 2025.
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?
Based on momondo bookings for flights between Ontario and Jacksonville, the leading airline is American Airlines, making up 52% of the total bookings. Other popular airlines include Delta with 22%, Southwest with 18%, and United Airlines with 8%.

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
Delta	PriceFrom $306	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta flights
American Airlines	PriceFrom $326	Free Cancellation	Rating 7.2 11,051 reviews	Search American Airlines flights
Southwest	PriceFrom $342	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
United Airlines	PriceFrom $362	Free Cancellation	Rating 7.4 9,016 reviews	Search United Airlines flights

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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.

An easier way to manage your Jacksonville trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Ontario to Jacksonville from $92

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 11/22. 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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Big names and deals

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Find the cheapest flights from Ontario to Jacksonville

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Delta flights from Ontario to Jacksonville

Our best Delta deals on Ontario to Jacksonville flight tickets

Frontier flights from Ontario to Jacksonville

Our best Frontier deals on Ontario to Jacksonville flight tickets

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Use the filters below to find and compare flights from Ontario to Jacksonville that are best for you.

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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 cheapest month to fly to Jacksonville?

If you are unable to visit Jacksonville during the month of July, then departing from Ontario during the month May is also very affordable. Most momondo users find prices during this month for around $408.

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

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

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

How have Ontario to Jacksonville flight prices changed over time?

As of November 2025, prices for Ontario to Jacksonville flights are approximately 36% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Ontario to Jacksonville?

Frontier, American Airlines, and United Airlines are the most popular carriers operating from Ontario to Jacksonville

What airlines fly to Jacksonville?

When to book flights from Ontario to Jacksonville

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

Direct flights

How far is Ontario to Jacksonville by plane?

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

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?

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

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

Traveling to a place near Jacksonville?

Why use momondo?

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

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

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

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

An easier way to manage your Jacksonville trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Florida