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

Frontier, American Airlines, and JetBlue 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 43% 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 September 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.

$137 Cheap Flights from Ontario to Jacksonville in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ontario to Jacksonville

Round-trip

One-way

Last minute

Cheap round-trip flights

8:34 am - 10:51 amONT-JAX

23h 17m2 stops

6:05 pm - 7:49 amJAX-ONT

16h 44m2 stops

$264Frontier

Find Deal

Fri, Oct 24 - Sun, Oct 26

12:05 pm - 10:22 amONT-JAX

19h 17m2 stops

5:18 pm - 11:50 pmJAX-ONT

9h 32m2 stops

$305Frontier

Find Deal

Sat, Nov 15 - Sun, Nov 16

10:30 am - 10:52 amONT-JAX

21h 22m2 stops

6:05 pm - 7:49 amJAX-ONT

16h 44m2 stops

$337Frontier

Find Deal

Thu, Oct 23 - Sun, Oct 26

1:00 pm - 10:58 pmONT-JAX

6h 58m1 stop

7:45 pm - 11:59 pmJAX-ONT

7h 14m1 stop

$346American Airlines

Find Deal

Wed, Oct 15 - Mon, Oct 20

6:15 am - 6:20 pmONT-JAX

9h 05m2 stops

7:45 pm - 11:59 pmJAX-ONT

7h 14m1 stop

$351American Airlines

Find Deal

Wed, Oct 15 - Mon, Oct 20

7:05 am - 4:23 pmONT-JAX

6h 18m1 stop

5:33 pm - 10:04 pmJAX-ONT

7h 31m1 stop

$361Delta

Find Deal

Thu, Nov 27 - Sat, Dec 13

10:00 pm - 10:06 amONT-JAX

9h 06m1 stop

5:10 am - 11:06 amJAX-ONT

8h 56m1 stop

$387Delta

Find Deal

Thu, Nov 6 - Tue, Nov 11

5:05 am - 3:13 pmONT-JAX

7h 08m1 stop

3:38 pm - 9:24 pmJAX-ONT

8h 46m1 stop

$417United Airlines

Find Deal

Wed, Oct 15 - Sun, Oct 19

6:00 am - 5:44 pmONT-JAX

8h 44m1 stop

7:00 am - 3:02 pmJAX-ONT

11h 02m2 stops

$422United Airlines

Find Deal

Fri, Oct 17 - Tue, Oct 21

5:25 am - 4:55 pmONT-JAX

8h 30m2 stops

5:35 am - 12:30 pmJAX-ONT

9h 55m2 stops

$447Southwest

Find Deal

Fri, Nov 14 - Sun, Nov 16

Delta flights from Ontario to Jacksonville

Our best Delta deals on Ontario to Jacksonville flight tickets

Delta

Nov 27

ONT7:05 amOntario

6h 18m

1 stop

JAX4:23 pmJacksonville

Dec 13

JAX5:33 pmJacksonville

7h 31m

1 stop

ONT10:04 pmOntario

$361

Find similar

Delta

Nov 6

ONT10:00 pmOntario

9h 06m

1 stop

JAX10:06 amJacksonville

Nov 11

JAX5:10 amJacksonville

8h 56m

1 stop

ONT11:06 amOntario

$387

Find similar

Delta

Mar 3

ONT10:30 pmOntario

8h 52m

1 stop

JAX10:22 amJacksonville

Mar 4

JAX3:45 pmJacksonville

8h 29m

1 stop

ONT9:14 pmOntario

$396

Find similar

United Airlines flights from Ontario to Jacksonville

Our best United Airlines deals on Ontario to Jacksonville flight tickets

United Airlines

Oct 15

ONT5:05 amOntario

7h 08m

1 stop

JAX3:13 pmJacksonville

Oct 19

JAX3:38 pmJacksonville

8h 46m

1 stop

ONT9:24 pmOntario

$417

Find similar

United Airlines

Oct 17

ONT6:00 amOntario

8h 44m

1 stop

JAX5:44 pmJacksonville

Oct 21

JAX7:00 amJacksonville

11h 02m

2 stops

ONT3:02 pmOntario

$422

Find similar

United Airlines

Nov 19

ONT1:33 pmOntario

6h 42m

1 stop

JAX11:15 pmJacksonville

Dec 2

JAX5:16 pmJacksonville

7h 33m

1 stop

ONT9:49 pmOntario

$437

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Fri 10/24

8:34 am-10:51 am

2 stops23h 17m

Jacksonville

Sun 10/26

6:05 pm-7:49 am

2 stops16h 44m

$264

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Sat 11/15

12:05 pm-10:22 am

2 stops19h 17m

Jacksonville

Sun 11/16

5:18 pm-11:50 pm

2 stops9h 32m

$305

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Thu 10/23

10:30 am-10:52 am

2 stops21h 22m

Jacksonville

Sun 10/26

6:05 pm-7:49 am

2 stops16h 44m

$337

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Wed 10/15

1:00 pm-10:58 pm

1 stop6h 58m

Jacksonville

Mon 10/20

7:45 pm-11:59 pm

1 stop7h 14m

$346

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Wed 10/15

6:15 am-6:20 pm

2 stops9h 05m

Jacksonville

Mon 10/20

7:45 pm-11:59 pm

1 stop7h 14m

$351

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Thu 11/27

7:05 am-4:23 pm

1 stop6h 18m

Jacksonville

Sat 12/13

5:33 pm-10:04 pm

1 stop7h 31m

$361

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Thu 11/6

10:00 pm-10:06 am

1 stop9h 06m

Jacksonville

Tue 11/11

5:10 am-11:06 am

1 stop8h 56m

$387

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Wed 10/15

5:05 am-3:13 pm

1 stop7h 08m

Jacksonville

Sun 10/19

3:38 pm-9:24 pm

1 stop8h 46m

$417

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Fri 10/17

6:00 am-5:44 pm

1 stop8h 44m

Jacksonville

Tue 10/21

7:00 am-3:02 pm

2 stops11h 02m

$422

OntarioJacksonville

ONT - JAX

ONTJAX

Ontario

Fri 11/14

5:25 am-4:55 pm

2 stops8h 30m

Jacksonville

Sun 11/16

5:35 am-12:30 pm

2 stops9h 55m

$447

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 November, then departing from Ontario during the month July is also very affordable. Most momondo users find prices during this month for around $406.

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

According to our data, Tuesday is the cheapest day to fly to Jacksonville from Ontario. The lowest ticket price found for a Tuesday departure recently was $249. 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 $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 $210 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 $448 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 September 2025, prices for Ontario to Jacksonville flights are approximately 32% 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

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 September 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 55% of the total bookings. Other popular airlines include Delta with 21%, Southwest with 17%, and United Airlines with 7%.

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 7,974 reviews	Search Delta flights
American Airlines	PriceFrom $326	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $342	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights
United Airlines	PriceFrom $362	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights

Fernandina Beach

Jacksonville Beach

Orange Park

Ponte Vedra Beach

Kingsland

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Thu 10/23

Thu 10/30

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing Florida

Popular cities in the United States

Flights to New Yorkfrom $50

Flights to Los Angelesfrom $44

Flights to Miamifrom $49

Flights to Chicagofrom $60

Flights to Orlandofrom $56

Flights to Las Vegasfrom $44

Flights to San Franciscofrom $60

Flights to Washington, D.C.from $56

Flights to Bostonfrom $67

Flights to Atlantafrom $51

Flights to Dallasfrom $59

Flights to Seattlefrom $102

Cheap flights from Ontario to Jacksonville from $137

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 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ontario to Jacksonville

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Delta flights from Ontario to Jacksonville

Our best Delta deals on Ontario to Jacksonville flight tickets

United Airlines flights from Ontario to Jacksonville

Our best United Airlines deals on Ontario to Jacksonville flight tickets

momondo Fare Finder

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

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 cheapest month to fly to Jacksonville?

If you are unable to visit Jacksonville during the month of November, then departing from Ontario during the month July is also very affordable. Most momondo users find prices during this month for around $406.

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 September 2025, prices for Ontario to Jacksonville flights are approximately 32% cheaper 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 JetBlue 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