ONT - JAX

$120 Find Cheap Flights from Ontario to Jacksonville - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$222
Typical prices: $388-$586
Multiple Airlines
Sun 12/2Sun 12/9
ONT - JAX • 1 stop
Cheapest one-way
$120
Typical prices: $215-$364
Frontier
Fri 12/14
ONT - JAX • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Ontario and Jacksonville. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
January
Cheapest • 22% price drop
November
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Houston George Bush Intcntl (IAH)
Cheapest • Avg $370 (round-trip)
Houston Hobby (HOU)
Shortest trip • 6h 47m (one-way)
Insights
Insights
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We hope you love your trip to Jacksonville!
Flight Deals
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Flight Deals

Cheap Flights from Ontario to Jacksonville (ONT-JAX)

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

Recent round-trip flight deals from Ontario to Jacksonville

Wed, Dec 2 - Wed, Dec 9
Multiple Airlines Logo
8:00 am - 8:02 pmONT  Ontario-JAX Jacksonville
9h 02m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
3:39 pm - 10:17 pmJAX  Jacksonville-ONT Ontario
9h 38m2 stops Atlanta Hartsfield-Jackson Denver Intl
$222Multiple Airlines
Wed, Dec 2 - Mon, Dec 7
Multiple Airlines Logo
8:00 am - 8:02 pmONT  Ontario-JAX Jacksonville
9h 02m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
5:47 pm - 10:45 amJAX  Jacksonville-ONT Ontario
19h 58m2 stops Atlanta Hartsfield-Jackson Denver Intl
$228Multiple Airlines
Thu, Dec 24 - Fri, Dec 25
Delta Logo
11:14 am - 9:34 pmONT  Ontario-JAX Jacksonville
7h 20m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 10:04 amJAX  Jacksonville-ONT Ontario
7h 04m1 stop Atlanta Hartsfield-Jackson
$377Delta
Wed, Dec 23 - Fri, Jan 1
Delta Logo
10:35 pm - 10:07 amONT  Ontario-JAX Jacksonville
8h 32m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 10:04 amJAX  Jacksonville-ONT Ontario
7h 04m1 stop Atlanta Hartsfield-Jackson
$398Delta
Tue, Dec 8 - Tue, Dec 15
American Airlines Logo
7:00 am - 6:47 pmONT  Ontario-JAX Jacksonville
8h 47m1 stop Dallas/Fort Worth
American Airlines Logo
7:20 am - 12:38 pmJAX  Jacksonville-ONT Ontario
8h 18m1 stop Phoenix Sky Harbor Intl
$399American Airlines
Tue, Dec 8 - Tue, Dec 15
United Airlines Logo
5:00 am - 5:58 pmONT  Ontario-JAX Jacksonville
9h 58m2 stops Denver Intl Chicago O'Hare Intl
United Airlines Logo
8:00 am - 12:34 pmJAX  Jacksonville-ONT Ontario
7h 34m1 stop Denver Intl
$404United Airlines
Wed, Dec 2 - Wed, Dec 9
Southwest Logo
10:05 am - 9:20 pmONT  Ontario-JAX Jacksonville
8h 15m2 stops Denver Intl Nashville Intl
Southwest Logo
6:35 am - 2:40 pmJAX  Jacksonville-ONT Ontario
11h 05m2 stops Nashville Intl Denver Intl
$409Southwest
Thu, Jan 7 - Sun, Jan 10
American Airlines Logo
12:45 pm - 10:54 pmONT  Ontario-JAX Jacksonville
7h 09m1 stop Dallas/Fort Worth
American Airlines Logo
6:40 am - 11:55 amJAX  Jacksonville-ONT Ontario
8h 15m1 stop Dallas/Fort Worth
$412American Airlines
Thu, Jan 7 - Sun, Jan 10
Southwest Logo
6:15 am - 6:30 pmONT  Ontario-JAX Jacksonville
9h 15m2 stops Las Vegas Harry Reid Intl Austin Bergstrom
Southwest Logo
5:55 am - 10:10 amJAX  Jacksonville-ONT Ontario
7h 15m1 stop Denver Intl
$417Southwest
Sun, Feb 7 - Sat, Feb 13
United Airlines Logo
6:00 am - 6:01 pmONT  Ontario-JAX Jacksonville
9h 01m1 stop Houston George Bush Intcntl
United Airlines Logo
4:12 pm - 9:17 pmJAX  Jacksonville-ONT Ontario
8h 05m1 stop Denver Intl
$458United Airlines
Booking Insights

Price, demand and travel trends for Ontario to Jacksonville flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Ontario to Jacksonville. It’s 21% cheaper than the average day, while Sunday is the most expensive, with prices 65% higher.

What’s the cheapest month to fly from Ontario to Jacksonville?

•January is the cheapest month to fly from Ontario to Jacksonville at $368 round-trip.
•September ($752) and December ($582) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 104% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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Key details for Ontario to Jacksonville flights

Low season

April

Cheapest flight

$120
Beat the crowds with an average 39% drop in travelers.
The most popular month to fly with an average 70% increase in travelers.
One-way 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

Your Ontario to Jacksonville flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to Jacksonville?

    Two cabin classes are available on flights from Ontario to Jacksonville:

    • Economy Class
    • First Class

  • How long is a flight from Ontario to Jacksonville?

    A nonstop flight from Ontario to Jacksonville takes 00m, covering 2,100 miles.

  • Do I need a passport to fly from Ontario to Jacksonville?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Ontario to Jacksonville flight?

    Round-trip flights from Ontario to Jacksonville range from $388 to $586, with an average of $469 over the past 12 months. Anything below $388 counts as a good deal.

  • How are flight prices from Ontario to Jacksonville looking right now?

    One-way fares from Ontario to Jacksonville are currently lower than usual. Average one-way flight prices are about $237, which is 14% below the typical average for this route.

  • What car rental options are available at Jacksonville Airport (JAX)?

    Jacksonville Airport (JAX) hosts 5 major car rental companies, with daily rates averaging $51 for economy cars. Top options include:

    • Easirent
    • Hertz
    • Dollar
    • Thrifty
    • Budget

  • Which airports can I use when flying from Ontario to Jacksonville?

    Flights from Ontario to Jacksonville usually depart from Ontario (ONT) and arrive at Jacksonville (JAX).

  • Which airports do connecting flights from Ontario to Jacksonville pass through?

    One-stop flights from Ontario to Jacksonville most commonly connect through:

    • Dallas/Fort Worth (DFW) - 36% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 32% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 9% of one-stop connections
    • Denver Intl (DEN) - 7% of one-stop connections

  • Can I save money by using flexible dates for flights from Ontario to Jacksonville?

    Yes. Flexible dates can save you up to 52% on flights from Ontario to Jacksonville. Tuesday is the cheapest departure day at $372 round-trip on average, while Sunday is the most expensive at $775, a difference of $403.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Ontario to Jacksonville?

    Flying via Houston Hobby (HOU) gives the shortest average 1-stop total travel time at 6h 47m, compared with 6h 51m via Dallas Love Field (DAL) and 7h 05m via Atlanta Hartsfield-Jackson (ATL).

  • What is the time difference between Ontario and Jacksonville?

    Jacksonville is 3 hours ahead of Ontario (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Jacksonville?

    Some of the most popular sights in Jacksonville are Mayo Clinic- Kinne Auditorium, Veterans Memorial Arena and EverBank Field. These are among the most viewed places in Jacksonville on KAYAK.

Your guide to booking Ontario to Jacksonville flights

Get tips on when to book, when to fly and what to know before your trip.

More options for your flight from Ontario to Jacksonville

Complete your trip to Jacksonville with a hotel stay or car rental

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