ONT - JAX

$172 Find Cheap Flights from Ontario to Jacksonville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Jacksonville departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Jacksonville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Jacksonville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Jacksonville, as well as popular online travel agencies
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Flights Deals

Cheap Flight Deals from Ontario to Jacksonville (ONT-JAX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Jacksonville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Ontario to Jacksonville

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Jacksonville.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
12:18 pm - 10:06 pmONT-JAX
6h 48m1 stop
Delta Logo
7:10 am - 11:08 amJAX-ONT
6h 58m1 stop
$307Delta
Find Deal
Tue, May 27 - Tue, Jun 3
Delta Logo
12:18 pm - 11:07 pmONT-JAX
7h 49m1 stop
Delta Logo
5:10 am - 12:15 pmJAX-ONT
10h 05m2 stops
$312Delta
Find Deal
Tue, May 27 - Tue, Jun 3
American Airlines Logo
11:59 pm - 10:53 amONT-JAX
7h 54m1 stop
American Airlines Logo
11:43 am - 6:23 pmJAX-ONT
9h 40m2 stops
$350American Airlines
Find Deal
Mon, May 26 - Fri, May 30
American Airlines Logo
6:01 am - 6:55 pmONT-JAX
9h 54m2 stops
American Airlines Logo
10:38 am - 6:23 pmJAX-ONT
10h 45m2 stops
$362American Airlines
Find Deal
Tue, May 27 - Tue, Jun 3
Southwest Logo
9:20 pm - 10:20 amONT-JAX
10h 00m1 stop
Southwest Logo
4:15 pm - 11:55 pmJAX-ONT
10h 40m2 stops
$402Southwest
Find Deal
Fri, Jun 13 - Fri, Jun 20
United Airlines Logo
5:05 am - 3:20 pmONT-JAX
7h 15m1 stop
United Airlines Logo
4:54 pm - 10:00 pmJAX-ONT
8h 06m1 stop
$407United Airlines
Find Deal
Tue, May 20 - Wed, May 21
United Airlines Logo
5:05 am - 7:56 pmONT-JAX
11h 51m2 stops
United Airlines Logo
9:10 am - 5:25 pmJAX-ONT
11h 15m2 stops
$417United Airlines
Find Deal
Tue, Jul 15 - Tue, Jul 22
Southwest Logo
10:45 am - 11:25 pmONT-JAX
9h 40m2 stops
Southwest Logo
5:35 am - 4:00 pmJAX-ONT
13h 25m2 stops
$423Southwest
Find Deal
Mon, Jun 16 - Sat, Jun 21
JetBlue Logo
10:59 pm - 11:35 amONT-JAX
9h 36m1 stop
JetBlue Logo
12:35 pm - 9:11 pmJAX-ONT
11h 36m1 stop
$471JetBlue
Find Deal
Fri, May 16 - Mon, May 19
JetBlue Logo
10:59 pm - 10:40 amONT-JAX
8h 41m1 stop
JetBlue Logo
12:11 pm - 9:11 pmJAX-ONT
12h 00m1 stop
$593JetBlue
Find Deal
Wed, May 28 - Mon, Jun 2
Useful Info

KAYAK's insights & trends for Ontario to Jacksonville flights

Get data-powered insights and trends into flights from Ontario to Jacksonville to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Jacksonville?

The average price of all round-trip flights from Ontario to Jacksonville clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Jacksonville on a Thursday and more expensive on a Sunday. On your return trip to Ontario, you should consider flying back on a Tuesday, and avoid Mondays for better deals.

What is the cheapest month to fly from Ontario to Jacksonville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Jacksonville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Jacksonville is May, where tickets cost $415 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $549 and $512 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Jacksonville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Jacksonville, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonOctober
High seasonMarch
Cheapest flight$172
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from Ontario to Jacksonville

When to book flights from Ontario to Jacksonville

Are your dates flexible? Find out the best times to travel from Ontario to Jacksonville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Jacksonville

  • What is the cheapest flight from Ontario to Jacksonville?

    In the last 3 days, the lowest price for a flight from Ontario to Jacksonville was $172 for a one-way ticket and $307 for a round-trip.

  • Do I need a passport to fly between Ontario and Jacksonville?

    No, a passport isn't needed to fly from Ontario to Jacksonville. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Ontario to Jacksonville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Jacksonville?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Jacksonville, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Jacksonville, Delta or Southwest?

    The two airlines most popular with KAYAK users for flights from Ontario to Jacksonville are Delta and Southwest. With an average price for the route of $468 and an overall rating of 8.0, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $426 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Ontario to Jacksonville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Jacksonville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Jacksonville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Jacksonville from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Jacksonville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Jacksonville with an airline and back to Ontario with another airline. Booking your flights between Ontario and JAX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Jacksonville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Jacksonville from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 4 airlines serving from Ontario to Jacksonville

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Jacksonville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Jacksonville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
7.1Food
8.2Boarding
8.6Crew
7.6Entertainment
8.0Comfort
Airline reviews

It is southwest seat was ok. Not the most comfortable seat

8.0 ExcellentJohn, Apr 2025PVD - FLL
Read more Southwest reviews

It is southwest seat was ok. Not the most comfortable seat

Plz don't take away free bags and free seating

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

Excellent! Only question is how we check in at exactly 24 hours in advance and end up at the end of the B boarding group

Employees were kind and funny, as always! Flight was late but no announcements were made for people with tight connections to help them transition quickly. No service due to turbulence.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

It went well. Plane wasn't full. Will be great when assigned seating is in place

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

Don't waste your money or points on first class. Delta first class is a joke. The seats were rickety, the food was awful, and nothing worked, wifi, my light, the power plug - and it was dirty - the fold out table was gross. For 2-3 hours, tough it out in Economy.

New boarding doesn't make sense. Filling front first is slow.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

The tv monitor in front of my seat was not responding. The flight crew reset it and it still didn’t work.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

Our seats were all the way in back of the plane,

Maybe add a seat trade app for flyers that didn’t get seats together

The flight attendants in First Class were mediocre at best. They did not take our tray away until we were about to land and only did so when I press the call button. The United person at the United Club was asked to get us our boarding pass since we missed the flight due in Chicago. She argued that we did not have seats on the flight given to us in Moline. Furthermore, she was adamant that we did not have a First Class ticket. After I spent much time with her trying to show we were correct, she reluctantly agreed. She was probably the most incompetent ticketing person I have ever met and I have traveled 3 million miles on United plus many additional miles with other carriers. United has definitely deteriorated in more than on way.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

Would have thought that they would gas up plane before everyone got on board

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Standard. No different than a discount carrier on a short trip.

The flights were terribly delayed and then cancelled which forced us booking another night at the hotel. Very poor management from American Airlines

Crew was late. Baggage was late. 2hs inside the plane waiting fro de-icing and traffic. A 3:30hs flight ended up being almost 6hs inside the airplane.

Checking in at the counter was very disappointing. The lady had a very bad attitude and smart at me. She had no smile, did not greet me by name, or acknowledge me as a valued customer. Poor reflection of the airline.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

I was pleasantly surprised with an upgrade at boarding. I finally had a mostly gluten free food options and a very attentive attendant.

Very poor. Our special services attendant gave us incorrect information. I also was mishandled at landing. There was no wheelchair waiting. I fell deboarding the plane. Appalling!

Everything you need to know for your flight from Ontario to Jacksonville

Information on your arrival and departure airports

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