ONT - OAJ

$317 Find Cheap Flights from Ontario to Jacksonville - Compare and Save

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 8/1. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$383
Typical prices: $519-$623
American Airlines
Tue 7/28Tue 8/4
ONT - OAJ • 1 stop
Cheapest one-way
$317
American Airlines
Sat 8/1
ONT - OAJ • 2 stops
Top airlines
Cheapest • from $383 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Jacksonville. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $529 (round-trip)
Shortest trip • 7h 41m (one-way)
Insights
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Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Jacksonville!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Jacksonville (ONT-OAJ)

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Jacksonville

Tue, Jul 28 - Tue, Aug 4
American Airlines Logo
10:10 pm - 8:28 am
ONT
-
OAJ
7h 18m
1 stop
American Airlines Logo
6:11 pm - 10:34 pm
OAJ
-
ONT
7h 23m
1 stop
$383American Airlines
Sat, Sep 26 - Tue, Sep 29
Delta Logo
12:17 pm - 10:22 pm
ONT
-
OAJ
7h 05m
1 stop
Delta Logo
2:26 pm - 11:47 pm
OAJ
-
ONT
12h 21m
2 stops
$388Delta
Tue, Nov 17 - Mon, Dec 7
Delta Logo
12:00 pm - 10:15 pm
ONT
-
OAJ
7h 15m
1 stop
Delta Logo
11:06 am - 6:18 pm
OAJ
-
ONT
10h 12m
1 stop
$401Delta
Tue, Nov 17 - Mon, Dec 7
Delta Logo
7:00 am - 10:15 pm
ONT
-
OAJ
12h 15m
2 stops
Delta Logo
11:06 am - 6:18 pm
OAJ
-
ONT
10h 12m
1 stop
$406Delta
Tue, Nov 17 - Mon, Dec 7
Delta Logo
7:00 am - 10:15 pm
ONT
-
OAJ
12h 15m
2 stops
Delta Logo
11:06 am - 10:43 pm
OAJ
-
ONT
14h 37m
2 stops
$411Delta
Thu, Aug 27 - Sun, Sep 6
Delta Logo
12:00 pm - 10:29 pm
ONT
-
OAJ
7h 29m
1 stop
Delta Logo
6:00 am - 10:42 am
OAJ
-
ONT
7h 42m
1 stop
$419Delta
Thu, Aug 27 - Sun, Sep 6
Delta Logo
12:00 pm - 10:29 pm
ONT
-
OAJ
7h 29m
1 stop
Delta Logo
12:10 pm - 10:45 pm
OAJ
-
ONT
13h 35m
2 stops
$424Delta
Tue, Jul 28 - Tue, Aug 4
American Airlines Logo
1:11 pm - 8:28 am
ONT
-
OAJ
16h 17m
2 stops
American Airlines Logo
6:11 pm - 10:34 pm
OAJ
-
ONT
7h 23m
1 stop
$429American Airlines
Sat, Sep 26 - Tue, Sep 29
Delta Logo
6:00 pm - 11:15 am
ONT
-
OAJ
14h 15m
2 stops
Delta Logo
6:00 am - 4:35 pm
OAJ
-
ONT
13h 35m
2 stops
$431Delta
Tue, Aug 18 - Thu, Aug 27
Delta Logo
7:05 am - 6:07 pm
ONT
-
OAJ
8h 02m
1 stop
Delta Logo
6:00 am - 10:42 am
OAJ
-
ONT
7h 42m
1 stop
$439Delta
Booking Insights

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 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 February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $851 and $698 respectively.

Good to know

Cheapest flight$317
Most popular time to fly and prices are also 28% lower on average.
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 5 days, the lowest price for a flight from Ontario to Jacksonville was $317 for a one-way ticket and $383 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 airports will I be using when flying from Ontario to Jacksonville?

    When flying out of Ontario you will be using Ontario. You will be landing at Jacksonville, also known as Jacksonville Albert J Ellis.

  • 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?

    oneworld, and SkyTeam 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 American Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Jacksonville are Delta and American Airlines. With an average price for the route of $518 and an overall rating of 7.8, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $576 and an overall rating of 7.1.

  • 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 OAJ 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.

Reviews of the top airlines flying 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.
7.8
DeltaOverall score based on 8453 reviews
7.8Entertainment
7.2Food
8.5Crew
8.1Boarding
7.8Comfort
Airline reviews

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

8.0 ExcellentAnonymous, Jun 2026
BOS - RDU
Read more Delta reviews

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

The flight was overbooked and the staff at the gate started calling for volunteers to drop out and offering incentives. That delayed the flight

There was no wifi even after my husband paid for wifi it wasn’t working. The plane looked and felt old.

Update the cabin with tv screens or at least music sources.

I was not clear if food was offered or not.

Take-off delayed an hour because of a missing flight officer, so,arrived in Charlotte lates causing many passengers to miss connections. Otherwise a very good flight, safe and comfortable, with an excellent professional crew.

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

The flight was on time and arrived early. The crew were friendly and helpful.

The flight was flawless and we even arrived between 20 and 25 minutes early!

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

VERY disappointed at the agent checking in my luggage. I know that the weight limit is 23 kg, a little over 50 pounds (50.71 pounds). Yet the agent kept repeating "50 pounds". So I said, the limit is 23 kg, and she had the audacity to say 'no, it is 22 kg!" Imagine my surprise. Was she ignorant or was she poorly trained? Not sure. The boarding process was pretty good. The speakers were loud enough so I still could hear them despite inconsiderate passengers continuing to speak while the announcements were going on. During the flight, the teenage girl sitting behind me kept pressing her feet to the back of my chair. I turned around several times, yet she did not get the hint. I did not make a fuss since I sense I had a bad streak that night with AA, so I just did the best I can to lean forward and not let that bother me.

It was wonderful upgrading to first. Plane was so cold thou. Crew was great. Wish there was a food option in first for such a long flight. Doesnt matter the time of day. Chintzy.

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

Information on your arrival and departure airports