ONT - JAX

$162 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 7/21. 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

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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Everything you should know

Cheapest round-trip
$323
Typical prices: $432-$585
American Airlines
Tue 8/4Tue 8/11
ONT - JAX • 1 stop
Cheapest one-way
$162
Typical prices: $187-$240
Delta
Tue 7/21
ONT - JAX • 1 stop
Top airlines
Cheapest • from $323 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
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
Insights
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Insights
Top layover airports
Cheapest • Avg $416 (round-trip)
Shortest trip • 6h 10m (one-way)
Insights
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Jacksonville!
Flight Deals
Booking Insights
Flight Deals

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

Recent round-trip flight deals from Ontario to Jacksonville

Tue, Aug 4 - Tue, Aug 11
American Airlines Logo
10:10 pm - 9:57 am
ONT
-
JAX
8h 47m
1 stop
American Airlines Logo
7:00 am - 11:43 am
JAX
-
ONT
7h 43m
1 stop
$323American Airlines
Thu, Aug 13 - Sat, Aug 22
American Airlines Logo
12:33 pm - 11:37 pm
ONT
-
JAX
8h 04m
1 stop
American Airlines Logo
6:42 am - 11:43 am
JAX
-
ONT
8h 01m
1 stop
$325American Airlines
Thu, Oct 29 - Mon, Nov 2
Delta Logo
12:18 pm - 11:56 pm
ONT
-
JAX
8h 38m
1 stop
Delta Logo
5:33 pm - 10:01 pm
JAX
-
ONT
7h 28m
1 stop
$327Delta
Tue, Sep 22 - Sat, Sep 26
Southwest Logo
7:25 am - 4:45 pm
ONT
-
JAX
6h 20m
1 stop
Southwest Logo
5:10 pm - 8:50 pm
JAX
-
ONT
6h 40m
1 stop
$328Southwest
Tue, Sep 22 - Sat, Sep 26
Southwest Logo
7:25 am - 7:40 pm
ONT
-
JAX
9h 15m
1 stop
Southwest Logo
12:25 pm - 8:05 pm
JAX
-
ONT
10h 40m
2 stops
$333Southwest
Tue, Sep 22 - Sat, Sep 26
Southwest Logo
5:45 am - 5:55 pm
ONT
-
JAX
9h 10m
2 stops
Southwest Logo
12:25 pm - 8:05 pm
JAX
-
ONT
10h 40m
2 stops
$339Southwest
Tue, Aug 18 - Mon, Aug 24
Southwest Logo
7:25 am - 4:45 pm
ONT
-
JAX
6h 20m
1 stop
Southwest Logo
2:00 pm - 8:20 pm
JAX
-
ONT
9h 20m
1 stop
$341Southwest
Tue, Aug 18 - Mon, Aug 24
Southwest Logo
8:35 am - 7:40 pm
ONT
-
JAX
8h 05m
2 stops
Southwest Logo
4:50 pm - 10:10 pm
JAX
-
ONT
8h 20m
1 stop
$346Southwest
Tue, Aug 18 - Mon, Aug 24
Southwest Logo
5:45 am - 5:55 pm
ONT
-
JAX
9h 10m
2 stops
Southwest Logo
2:00 pm - 7:25 pm
JAX
-
ONT
8h 25m
2 stops
$351Southwest
Thu, Oct 29 - Mon, Nov 2
Southwest Logo
5:20 am - 6:45 pm
ONT
-
JAX
10h 25m
2 stops
Southwest Logo
5:20 am - 9:15 am
JAX
-
ONT
6h 55m
1 stop
$364Southwest
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.

How much is a round-trip flight from Ontario to Jacksonville?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Jacksonville departing in August.

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 January, where tickets cost $368 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $583 and $562 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, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$162
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly with an average 12% 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 5 days, the lowest price for a flight from Ontario to Jacksonville was $153 for a one-way ticket and $323 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, Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Jacksonville, with SkyTeam being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Ontario to Jacksonville are Southwest and Delta. With an average price for the route of $507 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $442 and an overall rating of 7.8.

  • 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.

Reviews of the 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.
7.9
SouthwestOverall score based on 4246 reviews
7.5Entertainment
7.0Food
8.0Comfort
8.6Crew
8.1Boarding
Airline reviews

Over a 3 hour flight. The turbulence was almost imperceptible except for 2 short periods which were not bad and over quickly. The attendants claimed "Safety first" and sat looking at their phones for 3 hours with no drink or snack service. This isn't the first time with Southwest. I thinkit may be there new plan of operation. Oh, and it was June 18, Southwest's Birthday which offered free drinks. NOT.

4.0 OkayJeff, Jun 2026
MCI - FLL
Read more Southwest reviews

Over a 3 hour flight. The turbulence was almost imperceptible except for 2 short periods which were not bad and over quickly. The attendants claimed "Safety first" and sat looking at their phones for 3 hours with no drink or snack service. This isn't the first time with Southwest. I thinkit may be there new plan of operation. Oh, and it was June 18, Southwest's Birthday which offered free drinks. NOT.

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

The flight was okay. The pilots did an amazing job and kept us updated on the flight. The flight attendants were okay. They found time to be chatty with each other rather than focus on the guests. One of the attendants was a little less warm when asking about my bag I had on my lap that I was using during latter part of the mid- flight. Mind you, it was not the departure descent. I’m respectful to each and every attendant, it was the tone in her voice reminding me to place my carryon bag on the floor. I hope to have a better experience next time.

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

Okay, not wonderful. Short flight. Wi-fi didn't work properly. Stuck waiting for a gate to open upon arrival for 20 or so minutes.

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The quality of Southwest Airlines continues to degrade each time I fly with them. If it were not for the free luggage, I would probably choose another airline. Their prices are a little bit competitive, but way too high for the quality of the service. Southwest is not unique in this way. Domestic flight in the United States of America has continued to be a lower and lower quality product. Very sad when you compare the quality of domestic airlines to that of many international airlines around the world.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

I liked receiving attention from aged and well experienced flight attendants. I disliked the non-gluten-free snack but I brought my own so I was OK.

Was revoked with Jet Blue due to delay from Kenya Air

boarded at 5:30 pm, pushed away from gate at 6pm ... takeoff was not until ~6:45pm; disappointing

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 experience was good and the flight departed on time and landed early

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.

No Wi-Fi the entire trip Despite booking a flight that said it had Wi-Fi

After the long flight from Paris and a 4-hour layover I was more than ready to complete the last leg of my journey. We waited a few extra long minutes to ensure everyone’s bags were onboard which I didn’t mind but….😉. Would definitely choose Delta again.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

The flying experience was great. The flight was on time with no boarding issues during a peak travel period. The short cut baggage drop and process was not smooth and efficient at Dulles.

Everything was very good. Boarding and takeoff were on time and organized. Had a good flight

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

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.

Plane from partner PSA was filthy. Plastic needs to be thoroughly cleaned. Really disgusting to look at and wonder about cleanliness of parts less visible.

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

We didn't take off until an hour after we boarded.

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!

I had a very unpleasant encounter with one man from customer service: he was extremely rude and miserable. And his condition was reflected on his decision to send me to the worst airport hotel and get an awful flight connection. My hotel shuttle had never arrived and I had to book another hotel. People served by other representatives got a much better treatment and deal.

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.

WiFi wasn’t working on the flight, several delays and gate changes, ended up taking off 3 hrs later

The gate agent Sasir was rude and disrespect as we boarded

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

Information on your arrival and departure airports