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$219+ Cheap flights from Jacksonville to Ontario (JAX - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ONT
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Jacksonville to Ontario are usually found in July or October, booked 58 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Jacksonville to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Jacksonville (JAX) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$343
(Delta)

One-way from

$219
(JetBlue)

Popular in

June

Cheapest in

July

Average price

$480
Provider with most accurate pricing for Jacksonville-Ontario flight deals.
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Provider most trusted by Cheapflights users for Jacksonville-Ontario flights.
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From Jacksonville to Ontario
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One-way flight from Jacksonville to Ontario
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Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Jacksonville to Ontario

Cheapest flights from Jacksonville to Ontario
Explore the most affordable flight options available from Jacksonville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

This Delta deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/163:00 pmJAX - ONT
1 stop7h 28mDelta
Tue 4/2210:15 pmONT - JAX
1 stop7h 20mDelta
Deal found 3/24$343
This American Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/106:30 amJAX - ONT
1 stop8h 21mAmerican Airlines
Mon 5/1211:59 pmONT - JAX
1 stop7h 54mAmerican Airlines
Deal found 3/23$345
This Southwest deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/85:30 amJAX - ONT
2 stops8h 30mSouthwest
Mon 5/125:20 amONT - JAX
2 stops8h 40mSouthwest
Deal found 3/24$378
This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/84:18 pmJAX - ONT
1 stop7h 24mUnited Airlines
Tue 4/155:00 amONT - JAX
1 stop7h 16mUnited Airlines
Deal found 3/23$430
This Alaska Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2211:28 amJAX - ONT
2 stops15h 30mAlaska Airlines
Tue 4/296:00 amONT - JAX
2 stops13h 19mAlaska Airlines
Deal found 3/23$622
This JetBlue deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/273:04 pmJAX - ONT
1 stop10h 26mJetBlue
Thu 7/311:45 pmONT - JAX
1 stop11h 17mJetBlue
Deal found 3/23$1,121

Cheapflights Fare Finder

Customize your flight search to find flights from Jacksonville to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 25, 2025.
Use the filters below to find and compare flights from Jacksonville to Ontario that are best for you.

Fly from

Jacksonville

Fly to

Ontario

Route

Depart

Return

Price

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Wed 4/16

3:00 pm-7:28 pm

1 stop7h 28m

Ontario

Tue 4/22

10:15 pm-8:35 am

1 stop7h 20m

$343

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Sat 5/10

6:30 am-11:51 am

1 stop8h 21m

Ontario

Mon 5/12

11:59 pm-10:53 am

1 stop7h 54m

$345

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Thu 5/8

5:30 am-11:00 am

2 stops8h 30m

Ontario

Mon 5/12

5:20 am-5:00 pm

2 stops8h 40m

$378

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Tue 4/8

4:18 pm-8:42 pm

1 stop7h 24m

Ontario

Tue 4/15

5:00 am-3:16 pm

1 stop7h 16m

$430

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Tue 4/22

11:28 am-11:58 pm

2 stops15h 30m

Ontario

Tue 4/29

6:00 am-10:19 pm

2 stops13h 19m

$622

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Tue 5/13

12:35 pm-9:11 pm

1 stop11h 36m

$219

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Wed 4/30

8:20 am-3:17 pm

1 stop9h 57m

$222

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Sat 3/29

5:21 pm-11:54 pm

1 stop9h 33m

$360

JacksonvilleOntario

JAX - ONT

JAXONT

Jacksonville

Fri 4/25

7:15 am-5:30 pm

2 stops13h 15m

$394

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Jacksonville to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Jacksonville to Ontario in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Jacksonville-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Jacksonville-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Jacksonville-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Jacksonville-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Jacksonville-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Jacksonville to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Jacksonville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Jacksonville to Ontario. Price data was last updated on March 21, 2025.

Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from Jacksonville to Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Jacksonville to Ontario?

Currently, August is the cheapest month in which you can book a flight from Jacksonville to Ontario (average of $246). Flying from Jacksonville to Ontario in March is currently the most expensive (average of $324). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from JAX to ONT?

Find hourly flight availability from Jacksonville to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Jacksonville to Ontario at noon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight in the evening.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated March 25, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Jacksonville to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,785 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
JetBlue
7.3
Good
2,924 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

Find useful and relevant information for your journey from Jacksonville to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Jacksonville to Ontario round-trip?

    According to our current data, Delta ($343), American Airlines ($345), and Southwest ($378) offers the cheapest pricing from Jacksonville to Ontario. Delta is priced at 26% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Jacksonville to Ontario one-way?

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as $219. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Jacksonville to Ontario for a low price.

  • Can I find deals for flights from Jacksonville to Ontario that include hotel bookings?

    Yes. In addition to deals on Jacksonville to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Jacksonville to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Jacksonville to Ontario.

  • Can I find deals for business class flights from Jacksonville to Ontario?

    Yes. Cheapflights offers flight deals from Jacksonville to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Jacksonville to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Jacksonville to Ontario (average of $246). Flying from Jacksonville to Ontario in March is currently the most expensive (average of $324). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 4 airlines flying from Jacksonville to Ontario

Discover the top 4 airlines that operate flights from Jacksonville to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$204Average$617FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$228Average$373FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$342Average$459FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$351Average$456FlexibilityNo cancel feeOn-time63%
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