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 December 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.

$124 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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5:30 am - 12:16 pm

JAX

ONT

9h 46m2 stops

12:41 pm - 11:58 pm

ONT

JAX

8h 17m1 stop

$335Delta

Sun, Jan 18 - Tue, Jan 27

5:30 am - 12:16 pm

JAX

ONT

9h 46m2 stops

5:10 pm - 8:39 am

ONT

JAX

12h 29m2 stops

$340Delta

Sun, Jan 18 - Tue, Jan 27

5:31 pm - 10:00 pm

JAX

ONT

7h 29m1 stop

5:00 am - 2:59 pm

ONT

JAX

6h 59m1 stop

$359United Airlines

Tue, Feb 17 - Tue, Feb 24

5:31 pm - 10:00 pm

JAX

ONT

7h 29m1 stop

5:00 am - 9:14 pm

ONT

JAX

13h 14m2 stops

$364United Airlines

Tue, Feb 17 - Tue, Feb 24

10:58 am - 7:00 pm

JAX

ONT

11h 02m2 stops

6:15 am - 6:16 pm

ONT

JAX

9h 01m2 stops

$369American Airlines

Tue, Feb 17 - Tue, Feb 24

5:50 am - 10:20 am

JAX

ONT

7h 30m1 stop

6:50 am - 4:50 pm

ONT

JAX

7h 00m1 stop

$370Southwest

Sun, Jan 18 - Tue, Jan 27

5:50 am - 10:20 am

JAX

ONT

7h 30m1 stop

6:30 am - 4:50 pm

ONT

JAX

7h 20m1 stop

$372Southwest

Wed, Feb 4 - Mon, Feb 9

7:35 am - 2:45 pm

JAX

ONT

10h 10m2 stops

10:40 am - 9:35 pm

ONT

JAX

7h 55m1 stop

$377Southwest

Wed, Feb 4 - Mon, Feb 9

10:30 am - 5:10 pm

JAX

ONT

9h 40m2 stops

5:30 am - 5:25 pm

ONT

JAX

8h 55m2 stops

$382Southwest

Wed, Feb 4 - Mon, Feb 9

7:30 am - 11:31 am

JAX

ONT

7h 01m1 stop

10:30 pm - 8:44 am

ONT

JAX

7h 14m1 stop

$411Delta

Sun, Feb 1 - Thu, Feb 5

United Airlines flights from Jacksonville to Ontario

Our best United Airlines deals on Jacksonville to Ontario flight tickets

United Airlines

Feb 17

JAX5:31 pmJacksonville

7h 29m

1 stop

ONT10:00 pmOntario

Feb 24

ONT5:00 amOntario

6h 59m

1 stop

JAX2:59 pmJacksonville

$359

Find similar

United Airlines

Feb 17

JAX5:31 pmJacksonville

7h 29m

1 stop

ONT10:00 pmOntario

Feb 24

ONT5:00 amOntario

13h 14m

2 stops

JAX9:14 pmJacksonville

$364

Find similar

United Airlines

Feb 20

JAX11:33 amJacksonville

14h 24m

2 stops

ONT10:57 pmOntario

Feb 23

ONT6:00 amOntario

7h 25m

1 stop

JAX4:25 pmJacksonville

$416

Find similar

American Airlines flights from Jacksonville to Ontario

Our best American Airlines deals on Jacksonville to Ontario flight tickets

American Airlines

Feb 17

JAX10:58 amJacksonville

11h 02m

2 stops

ONT7:00 pmOntario

Feb 24

ONT6:15 amOntario

9h 01m

2 stops

JAX6:16 pmJacksonville

$369

Find similar

American Airlines

Mar 23

JAX3:55 pmJacksonville

8h 29m

1 stop

ONT9:24 pmOntario

Mar 30

ONT11:59 pmOntario

9h 04m

1 stop

JAX12:03 pmJacksonville

$437

Find similar

American Airlines

Mar 23

JAX3:55 pmJacksonville

8h 29m

1 stop

ONT9:24 pmOntario

Mar 30

ONT7:59 pmOntario

10h 04m

2 stops

JAX9:03 amJacksonville

$442

Find similar

Fly from

Fly to

Route

Depart

Return

Price

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Sun 1/18

5:30 am-12:16 pm

2 stops9h 46m

Ontario

Tue 1/27

12:41 pm-11:58 pm

1 stop8h 17m

$335

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Sun 1/18

5:30 am-12:16 pm

2 stops9h 46m

Ontario

Tue 1/27

5:10 pm-8:39 am

2 stops12h 29m

$340

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Tue 2/17

5:31 pm-10:00 pm

1 stop7h 29m

Ontario

Tue 2/24

5:00 am-2:59 pm

1 stop6h 59m

$359

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Tue 2/17

5:31 pm-10:00 pm

1 stop7h 29m

Ontario

Tue 2/24

5:00 am-9:14 pm

2 stops13h 14m

$364

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Tue 2/17

10:58 am-7:00 pm

2 stops11h 02m

Ontario

Tue 2/24

6:15 am-6:16 pm

2 stops9h 01m

$369

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Sun 1/18

5:50 am-10:20 am

1 stop7h 30m

Ontario

Tue 1/27

6:50 am-4:50 pm

1 stop7h 00m

$370

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Wed 2/4

5:50 am-10:20 am

1 stop7h 30m

Ontario

Mon 2/9

6:30 am-4:50 pm

1 stop7h 20m

$372

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Wed 2/4

7:35 am-2:45 pm

2 stops10h 10m

Ontario

Mon 2/9

10:40 am-9:35 pm

1 stop7h 55m

$377

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Wed 2/4

10:30 am-5:10 pm

2 stops9h 40m

Ontario

Mon 2/9

5:30 am-5:25 pm

2 stops8h 55m

$382

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Sun 2/1

7:30 am-11:31 am

1 stop7h 01m

Ontario

Thu 2/5

10:30 pm-8:44 am

1 stop7h 14m

$411

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, October 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 $344. If you aren’t able to travel during the month of October, then book flights to Ontario from Jacksonville during September instead. Flights to Ontario in September, while not as cheap as those in October, still average around $347.

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 December 2025, prices for Jacksonville to Ontario flights are approximately 11% cheaper 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

Fastest flight time	6h 59m
Direct flights	None

The fastest flight from Jacksonville to Ontario takes 6h 59m

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

Search flight deals

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 59m, 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 December 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 (49% of total bookings). The next most popular airlines are Southwest (25%), Delta (19%), and United Airlines (8%).

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 8,018 reviews	Search Delta flights
United Airlines	PriceFrom $228	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
American Airlines	PriceFrom $342	Free Cancellation	Rating 7.2 11,068 reviews	Search American Airlines flights
Southwest	PriceFrom $358	Free Cancellation	Rating 8.0 4,258 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.