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

Frontier is the most popular carrier operating from Jacksonville to Ontario

What airlines fly to Ontario?

American Airlines, Delta and Breeze Airways are the top three most popular airlines that fly to Ontario from Jacksonville according to our data. American Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Jacksonville Airport to Ontario Airport are updated daily.

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

As of November 2025, there are 4 operators available to choose from for flights from Jacksonville Airport to Ontario Airport.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Jacksonville Airport to Ontario Airport.

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

The travel and health documents required for your trip to Ontario 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 Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$65 Cheap Flights from Jacksonville to Ontario in 2025/26

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Find the cheapest flights from Jacksonville to Los Angeles

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Cheap round-trip flights

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1:57 pm - 6:35 pmJAX-ONT

7h 38m1 stop

7:33 pm - 10:36 amONT-JAX

12h 03m1 stop

$130Frontier

Find Deal

Thu, Dec 4 - Thu, Dec 11

1:57 pm - 6:35 pmJAX-ONT

7h 38m1 stop

7:33 pm - 10:36 amONT-JAX

12h 03m1 stop

$176Frontier

Find Deal

Thu, Dec 4 - Thu, Dec 11

1:57 pm - 6:35 pmJAX-ONT

7h 38m1 stop

6:15 am - 10:36 amONT-JAX

25h 21m2 stops

$192Frontier

Find Deal

Thu, Dec 4 - Thu, Dec 11

5:35 pm - 11:04 pmJAX-ONT

8h 29m1 stop

1:04 pm - 10:57 pmONT-JAX

6h 53m1 stop

$359Delta

Find Deal

Wed, Dec 10 - Tue, Jan 6

2:52 pm - 11:58 pmJAX-ONT

12h 06m2 stops

1:04 pm - 10:57 pmONT-JAX

6h 53m1 stop

$364Delta

Find Deal

Wed, Dec 10 - Tue, Jan 6

6:10 am - 12:50 pmJAX-ONT

9h 40m2 stops

5:55 am - 6:20 pmONT-JAX

9h 25m2 stops

$373Southwest

Find Deal

Sat, Dec 6 - Wed, Dec 10

3:52 pm - 11:58 pmJAX-ONT

11h 06m2 stops

11:59 pm - 12:03 pmONT-JAX

9h 04m2 stops

$375American Airlines

Find Deal

Thu, Feb 19 - Mon, Feb 23

9:29 am - 6:19 pmJAX-ONT

11h 50m2 stops

6:17 am - 8:19 pmONT-JAX

11h 02m2 stops

$389American Airlines

Find Deal

Thu, Dec 4 - Thu, Dec 11

4:30 pm - 8:42 pmJAX-ONT

7h 12m1 stop

6:00 am - 3:36 pmONT-JAX

6h 36m1 stop

$459United Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 17

4:30 pm - 8:42 pmJAX-ONT

7h 12m1 stop

6:00 am - 3:36 pmONT-JAX

6h 36m1 stop

$463United Airlines

Find Deal

Tue, Dec 2 - Wed, Dec 17

Southwest flights from Jacksonville to Ontario

Our best Southwest deals on Jacksonville to Ontario flight tickets

Southwest

Dec 6

JAX6:10 amJacksonville

9h 40m

2 stops

ONT12:50 pmOntario

Dec 10

ONT5:55 amOntario

9h 25m

2 stops

JAX6:20 pmJacksonville

$373

Find similar

Southwest

Nov 8

JAX3:50 pmJacksonville

7h 20m

1 stop

ONT8:10 pmOntario

Nov 22

ONT6:00 amOntario

6h 35m

1 stop

JAX3:35 pmJacksonville

$847

Find similar

Southwest

Nov 8

JAX3:50 pmJacksonville

7h 20m

1 stop

ONT8:10 pmOntario

Nov 22

ONT5:10 amOntario

10h 55m

2 stops

JAX7:05 pmJacksonville

$852

Find similar

United Airlines flights from Jacksonville to Ontario

Our best United Airlines deals on Jacksonville to Ontario flight tickets

United Airlines

Dec 3

JAX4:30 pmJacksonville

7h 12m

1 stop

ONT8:42 pmOntario

Dec 17

ONT6:00 amOntario

6h 36m

1 stop

JAX3:36 pmJacksonville

$459

Find similar

United Airlines

Dec 2

JAX4:30 pmJacksonville

7h 12m

1 stop

ONT8:42 pmOntario

Dec 17

ONT6:00 amOntario

6h 36m

1 stop

JAX3:36 pmJacksonville

$463

Find similar

United Airlines

Dec 18

JAX4:39 pmJacksonville

8h 46m

1 stop

ONT10:25 pmOntario

Dec 25

ONT5:05 amOntario

7h 13m

1 stop

JAX3:18 pmJacksonville

$465

Find similar

Fly from

Fly to

Route

Depart

Return

Price

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Thu 12/4

1:57 pm-6:35 pm

1 stop7h 38m

Ontario

Thu 12/11

7:33 pm-10:36 am

1 stop12h 03m

$130

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Thu 12/4

1:57 pm-6:35 pm

1 stop7h 38m

Ontario

Thu 12/11

7:33 pm-10:36 am

1 stop12h 03m

$176

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Thu 12/4

1:57 pm-6:35 pm

1 stop7h 38m

Ontario

Thu 12/11

6:15 am-10:36 am

2 stops25h 21m

$192

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Wed 12/10

5:35 pm-11:04 pm

1 stop8h 29m

Ontario

Tue 1/6

1:04 pm-10:57 pm

1 stop6h 53m

$359

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Wed 12/10

2:52 pm-11:58 pm

2 stops12h 06m

Ontario

Tue 1/6

1:04 pm-10:57 pm

1 stop6h 53m

$364

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Sat 12/6

6:10 am-12:50 pm

2 stops9h 40m

Ontario

Wed 12/10

5:55 am-6:20 pm

2 stops9h 25m

$373

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Thu 2/19

3:52 pm-11:58 pm

2 stops11h 06m

Ontario

Mon 2/23

11:59 pm-12:03 pm

2 stops9h 04m

$375

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Thu 12/4

9:29 am-6:19 pm

2 stops11h 50m

Ontario

Thu 12/11

6:17 am-8:19 pm

2 stops11h 02m

$389

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Wed 12/3

4:30 pm-8:42 pm

1 stop7h 12m

Ontario

Wed 12/17

6:00 am-3:36 pm

1 stop6h 36m

$459

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Tue 12/2

4:30 pm-8:42 pm

1 stop7h 12m

Ontario

Wed 12/17

6:00 am-3:36 pm

1 stop6h 36m

$463

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 Jacksonville to Ontario

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 Ontario?

In general, September is the cheapest month to fly from Jacksonville to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $347. If you aren’t able to travel during the month of September, then book flights to Ontario from Jacksonville during April instead. Flights to Ontario in April, while not as cheap as those in September, still average around $348.

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

The cheapest day to depart on your flight to Ontario is on a Tuesday when prices can be found for as low as $376. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Jacksonville to Ontario for around $642.

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

At noon is the cheapest time of day to fly from Jacksonville to Ontario when you can find flight prices for as low as $393. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $537 on average. Flights to Ontario from Jacksonville in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have Jacksonville to Ontario flight prices changed over time?

As of November 2025, prices for Jacksonville to Ontario flights are approximately 19% more expensive when compared to flights at the same time last year.

When to book flights from Jacksonville to Ontario

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

Estimated round-trip price

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

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

Direct flights	None

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

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How far is Jacksonville to Ontario by plane?
The straight-line distance from Jacksonville to Ontario is 2108.0 mi. Flights usually cover this in 6h 57m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Jacksonville Airport to Ontario Airport?
Prices for flights from Jacksonville Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Jacksonville Airport to Ontario Airport?
As of November 2025, there are 4 operators available to choose from for flights from Jacksonville Airport to Ontario Airport.
How old do you have to be to fly from Jacksonville Airport to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Jacksonville Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario 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 Ontario 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 Jacksonville to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Jacksonville to Ontario is American Airlines (48% of total bookings). The next most popular airlines are Southwest (25%), Delta (21%), and United Airlines (6%).

Best airlines flying from Jacksonville to Ontario

Compare and see reviews for airlines that fly from Jacksonville to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $204	Free Cancellation	Rating 7.9 8,004 reviews	Search Delta flights
United Airlines	PriceFrom $228	Free Cancellation	Rating 7.4 9,003 reviews	Search United Airlines flights
American Airlines	PriceFrom $342	Free Cancellation	Rating 7.2 11,042 reviews	Search American Airlines flights
Southwest	PriceFrom $358	Free Cancellation	Rating 8.0 4,240 reviews	Search Southwest flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Jacksonville.

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

Yes. All flights to Ontario from Jacksonville on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Jacksonville to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Ontario from Jacksonville. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.