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$357+ Cheap flights from Jacksonville, NC to Ontario (OAJ - ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
OAJ — ONT
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Jacksonville to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Jacksonville (OAJ) 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 August 18, 2025.

Round-trip from

$357
(Delta)

Popular in

December

Cheapest in

February

Average price

$483
From Jacksonville Albert J Ellis to Ontario
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Highest demand for flights based on searches. 23% potential increase in price ($167 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 18, 2025.

This Delta deal was found by Cheapflights users on 8/16. 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.
Sat 9/135:52 amOAJ - ONT
1 stop7h 50mDelta
Sat 9/2011:55 amONT - OAJ
1 stop6h 53mDelta
Deal found 8/16$357
This American Airlines deal was found by Cheapflights users on 8/16. 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 9/135:22 pmOAJ - ONT
1 stop7h 02mAmerican Airlines
Sat 9/206:10 amONT - OAJ
2 stops11h 56mAmerican Airlines
Deal found 8/16$373
This American Airlines deal was found by Cheapflights users on 8/16. 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.
Sun 9/285:09 amOAJ - ONT
2 stops11h 10mAmerican Airlines
Sat 10/410:35 pmONT - OAJ
1 stop6h 59mAmerican Airlines
Deal found 8/16$393
This American Airlines deal was found by Cheapflights users on 8/16. 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.
Sun 9/285:09 amOAJ - ONT
2 stops11h 10mAmerican Airlines
Sun 9/2811:59 pmONT - OAJ
2 stops10h 57mAmerican Airlines
Deal found 8/16$398
This Delta deal was found by Cheapflights users on 8/18. 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.
Mon 10/63:01 pmOAJ - ONT
1 stop7h 18mDelta
Fri 10/107:05 amONT - OAJ
1 stop8h 08mDelta
Deal found 8/18$527

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 August 18, 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

OAJ - ONT

OAJONT

Jacksonville Albert J Ellis

Sat 9/13

5:52 am-10:42 am

1 stop7h 50m

Ontario

Sat 9/20

11:55 am-9:48 pm

1 stop6h 53m

$357

JacksonvilleOntario

OAJ - ONT

OAJONT

Jacksonville Albert J Ellis

Sat 9/13

5:22 pm-9:24 pm

1 stop7h 02m

Ontario

Sat 9/20

6:10 am-9:06 pm

2 stops11h 56m

$373

JacksonvilleOntario

OAJ - ONT

OAJONT

Jacksonville Albert J Ellis

Sun 9/28

5:09 am-1:19 pm

2 stops11h 10m

Ontario

Sat 10/4

10:35 pm-8:34 am

1 stop6h 59m

$393

JacksonvilleOntario

OAJ - ONT

OAJONT

Jacksonville Albert J Ellis

Sun 9/28

5:09 am-1:19 pm

2 stops11h 10m

Ontario

Sun 9/28

10:35 pm-9:52 am

1 stop8h 17m

$393

JacksonvilleOntario

OAJ - ONT

OAJONT

Jacksonville Albert J Ellis

Mon 10/6

3:01 pm-7:19 pm

1 stop7h 18m

Ontario

Fri 10/10

7:05 am-6:13 pm

1 stop8h 08m

$527

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

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

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

Currently, August is the cheapest month in which you can book a flight from Jacksonville, North Carolina to Ontario (average of $246). Flying from Jacksonville, North Carolina to Ontario in March is currently the most expensive (average of $328). 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.

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 August 18, 2025.
Peruse reviews from past customers who have flown with 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.
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • How long is the flight from Jacksonville, North Carolina to Ontario?

    There are many flights that can get you from Jacksonville, North Carolina to Ontario in 7h 02m. Fly via Delta or American Airlines to get the fastest option. Airlines will cover a distance of 2262 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Jacksonville, North Carolina to Ontario round-trip?

    Delta, at $353, was found to be the cheapest airline from Jacksonville, North Carolina to Ontario..

  • 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, North Carolina to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Jacksonville, North Carolina to Ontario (average of $246). Flying from Jacksonville, North Carolina to Ontario in March is currently the most expensive (average of $328). 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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Alternative routes for Jacksonville to Ontario

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Top airline flying from Jacksonville to Ontario

Discover the top airline 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$353Average$507FlexibilityNo cancel feeOn-timeN/A

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