$344+ Cheap flights from Ontario to Jacksonville, NC (ONT - OAJ)
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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OAJ
Sep 3 — Sep 101
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Jacksonville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Jacksonville
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Best
Last-minute
One-way
Cheapest flights from Ontario to JacksonvilleExplore the most affordable flight options available from Ontario to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 4, 2026.
Explore the most affordable flight options available from Ontario to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 4, 2026.
This Delta deal was found by Cheapflights users on 8/3. 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 10/2812:18 pm
ONT
- OAJ
1 stop7h 04m
Delta
Wed 11/46:00 am
OAJ
- ONT
1 stop8h 06m
Delta
Deal found 8/3![Delta logo]()
$429
This Delta deal was found by Cheapflights users on 8/2. 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.
Tue 10/2012:18 pm
ONT
- OAJ
1 stop7h 04m
Delta
Sat 10/246:00 am
OAJ
- ONT
1 stop8h 06m
Delta
Deal found 8/2![Delta logo]()
$479
This American Airlines deal was found by Cheapflights users on 8/3. 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.
Tue 10/2010:10 pm
ONT
- OAJ
1 stop7h 19m
American Airlines
Sat 10/244:56 pm
OAJ
- ONT
1 stop9h 03m
American Airlines
Deal found 8/3![American Airlines logo]()
$480
This Delta deal was found by Cheapflights users on 8/1. 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.
Fri 10/236:01 pm
ONT
- OAJ
2 stops14h 09m
Delta
Wed 10/2812:00 pm
OAJ
- ONT
2 stops13h 43m
Delta
Deal found 8/1![Delta logo]()
$489
This Delta deal was found by Cheapflights users on 8/3. 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.
Thu 10/112:19 pm
ONT
- OAJ
1 stop7h 03m
Delta
Sun 10/46:34 pm
OAJ
- ONT
1 stop6h 50m
Delta
Deal found 8/3![Delta logo]()
$529
This Delta deal was found by Cheapflights users on 8/3. 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.
Fri 11/1311:10 pm
ONT
- OAJ
1 stop9h 01m
Delta
Mon 11/162:29 pm
OAJ
- ONT
2 stops12h 29m
Delta
Deal found 8/3![Delta logo]()
$534
This American Airlines deal was found by Cheapflights users on 8/3. 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.
Wed 10/2810:10 pm
ONT
- OAJ
1 stop7h 19m
American Airlines
Wed 11/410:10 am
OAJ
- ONT
2 stops11h 37m
American Airlines
Deal found 8/3![American Airlines logo]()
$541
This Delta deal was found by Cheapflights users on 7/30. 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.
Thu 11/1212:22 pm
ONT
- OAJ
1 stop7h 06m
Delta
Mon 11/1611:55 am
OAJ
- ONT
1 stop9h 36m
Delta
Deal found 7/30![Delta logo]()
$549
This Delta deal was found by Cheapflights users on 7/31. 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.
Tue 8/187:05 am
ONT
- OAJ
1 stop8h 02m
Delta
Sun 8/232:27 pm
OAJ
- ONT
1 stop7h 03m
Delta
Deal found 7/31![Delta logo]()
$564
Best flights from Ontario to JacksonvilleDiscover carefully curated flight deals from Ontario to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 4, 2026.
Discover carefully curated flight deals from Ontario to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 4, 2026.
This Delta deal was found by Cheapflights users on 8/3. 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 10/2812:18 pm
ONT
- OAJ
1 stop7h 04m
Delta
Wed 11/46:00 am
OAJ
- ONT
1 stop8h 06m
Delta
Deal found 8/3![Delta logo]()
$429
This American Airlines deal was found by Cheapflights users on 8/3. 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.
Tue 10/2010:10 pm
ONT
- OAJ
1 stop7h 19m
American Airlines
Sat 10/244:56 pm
OAJ
- ONT
1 stop9h 03m
American Airlines
Deal found 8/3![American Airlines logo]()
$480
This Delta deal was found by Cheapflights users on 8/3. 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.
Fri 11/1311:10 pm
ONT
- OAJ
1 stop9h 01m
Delta
Tue 11/176:00 am
OAJ
- ONT
1 stop8h 10m
Delta
Deal found 8/3![Delta logo]()
$479
This Delta deal was found by Cheapflights users on 8/1. 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.
Fri 10/2311:15 pm
ONT
- OAJ
1 stop8h 55m
Delta
Wed 10/286:00 am
OAJ
- ONT
1 stop8h 06m
Delta
Deal found 8/1![Delta logo]()
$479
This Delta deal was found by Cheapflights users on 8/3. 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.
Fri 11/1311:10 pm
ONT
- OAJ
1 stop9h 01m
Delta
Mon 11/1611:55 am
OAJ
- ONT
1 stop9h 36m
Delta
Deal found 8/3![Delta logo]()
$529
This Delta deal was found by Cheapflights users on 7/30. 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.
Thu 11/1212:22 pm
ONT
- OAJ
1 stop7h 06m
Delta
Mon 11/1611:55 am
OAJ
- ONT
1 stop9h 36m
Delta
Deal found 7/30![Delta logo]()
$549
This Delta deal was found by Cheapflights users on 7/31. 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.
Tue 8/187:05 am
ONT
- OAJ
1 stop8h 02m
Delta
Sun 8/232:27 pm
OAJ
- ONT
1 stop7h 03m
Delta
Deal found 7/31![Delta logo]()
$564
This Delta deal was found by Cheapflights users on 7/31. 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 8/197:05 am
ONT
- OAJ
1 stop8h 02m
Delta
Sun 8/236:00 am
OAJ
- ONT
1 stop7h 42m
Delta
Deal found 7/31![Delta logo]()
$564
This Delta deal was found by Cheapflights users on 7/31. 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.
Thu 8/2012:00 pm
ONT
- OAJ
1 stop7h 29m
Delta
Sun 8/2312:10 pm
OAJ
- ONT
1 stop9h 20m
Delta
Deal found 7/31![Delta logo]()
$617
Last-minute flights from Ontario to JacksonvilleDiscover last-minute flight deals from Ontario to Jacksonville. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Jacksonville. Data last updated August 4, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/3. 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.
Sun 8/912:00 pm
ONT
- OAJ
1 stop7h 29m
Delta
Sun 8/2312:10 pm
OAJ
- ONT
1 stop9h 20m
Delta
Deal found 8/3![Delta logo]()
$649
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 8/106:00 am
ONT
- OAJ
2 stops12h 21m
American Airlines
Tue 8/258:02 am
OAJ
- ONT
2 stops13h 13m
American Airlines
Deal found 7/31![American Airlines logo]()
$732
This Delta deal was found by Cheapflights users on 7/31. 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.
Tue 8/187:05 am
ONT
- OAJ
1 stop8h 02m
Delta
Sun 8/232:27 pm
OAJ
- ONT
1 stop7h 03m
Delta
Deal found 7/31![Delta logo]()
$564
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 8/196:15 am
ONT
- OAJ
2 stops12h 06m
American Airlines
Sun 8/233:06 pm
OAJ
- ONT
2 stops10h 53m
American Airlines
Deal found 7/31![American Airlines logo]()
$738
This Delta deal was found by Cheapflights users on 7/31. 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.
Thu 8/2012:00 pm
ONT
- OAJ
1 stop7h 29m
Delta
Mon 8/2412:10 pm
OAJ
- ONT
1 stop9h 20m
Delta
Deal found 7/31![Delta logo]()
$617
This American Airlines deal was found by Cheapflights users on 8/3. 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 9/52:43 pm
ONT
- OAJ
2 stops21h 01m
American Airlines
Sat 9/126:06 am
OAJ
- ONT
2 stops15h 11m
American Airlines
Deal found 8/3![American Airlines logo]()
$648
This American Airlines deal was found by Cheapflights users on 8/3. 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 9/512:33 pm
ONT
- OAJ
2 stops23h 11m
American Airlines
Tue 9/1510:15 am
OAJ
- ONT
2 stops12h 52m
American Airlines
Deal found 8/3![American Airlines logo]()
$658
This Delta deal was found by Cheapflights users on 8/3. 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.
Thu 9/1012:17 pm
ONT
- OAJ
1 stop7h 05m
Delta
Thu 9/176:00 am
OAJ
- ONT
1 stop8h 09m
Delta
Deal found 8/3![Delta logo]()
$594
One-way flights from Ontario to JacksonvilleSearch for one-way flight options from Ontario to Jacksonville. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
Search for one-way flight options from Ontario to Jacksonville. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
This Delta deal was found by Cheapflights users on 7/30. 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 8/1912:00 pm
ONT
- OAJ
1 stop7h 29m
Delta
Deal found 7/30![Delta logo]()
$344
This American Airlines deal was found by Cheapflights users on 8/2. 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.
Wed 8/196:00 am
ONT
- OAJ
2 stops9h 38m
American Airlines
Deal found 8/2![American Airlines logo]()
$415
Find flight deals from Ontario to Jacksonville
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Jacksonville (OAJ). 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 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $429 (Delta) |
One-way from | $344 (Delta) |
Popular in | April |
Cheapest in | January |
Average price | $548 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Jacksonville 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 4, 2026.
Use the filters below to find and compare flights from Ontario to Jacksonville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Wed 10/28
12:18 pm-10:22 pm
1 stop7h 04m
Jacksonville Albert J Ellis
Wed 11/4
6:00 am-11:06 am
1 stop8h 06m
$429
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Fri 11/13
11:10 pm-11:11 am
1 stop9h 01m
Jacksonville Albert J Ellis
Tue 11/17
6:00 am-11:10 am
1 stop8h 10m
$479
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Fri 10/23
11:15 pm-11:10 am
1 stop8h 55m
Jacksonville Albert J Ellis
Wed 10/28
6:00 am-11:06 am
1 stop8h 06m
$479
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Tue 10/20
10:10 pm-8:29 am
1 stop7h 19m
Jacksonville Albert J Ellis
Sat 10/24
4:56 pm-10:59 pm
1 stop9h 03m
$480
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Fri 11/13
11:10 pm-11:11 am
1 stop9h 01m
Jacksonville Albert J Ellis
Mon 11/16
11:55 am-6:31 pm
1 stop9h 36m
$529
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Thu 11/12
12:22 pm-10:28 pm
1 stop7h 06m
Jacksonville Albert J Ellis
Mon 11/16
11:55 am-6:31 pm
1 stop9h 36m
$549
Quickest round-trip
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Tue 8/18
7:05 am-6:07 pm
1 stop8h 02m
Jacksonville Albert J Ellis
Sun 8/23
2:27 pm-6:30 pm
1 stop7h 03m
$564
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Wed 8/19
7:05 am-6:07 pm
1 stop8h 02m
Jacksonville Albert J Ellis
Sun 8/23
6:00 am-10:42 am
1 stop7h 42m
$564
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Thu 8/20
12:00 pm-10:29 pm
1 stop7h 29m
Jacksonville Albert J Ellis
Sun 8/23
12:10 pm-6:30 pm
1 stop9h 20m
$617
Cheapest one-way
Quickest one-way
OntarioJacksonville
ONT - OAJ
ONTOAJ
Ontario
Wed 8/19
12:00 pm-10:29 pm
1 stop7h 29m
$344
Showing 1-10 of 12 resultsSorted by cheapest first
Compare providers for flights from Ontario to Jacksonville
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 Ontario to Jacksonville in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Jacksonville, North Carolina flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Jacksonville, North Carolina flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Jacksonville, North Carolina flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Jacksonville, North Carolina 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 Ontario-Jacksonville, North Carolina 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 Ontario to Jacksonville
Have a flexible travel schedule? Discover the best time to fly to Jacksonville from Ontario with our price prediction graph.
ONT-OAJ
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.
Reviews of airlines servicing Jacksonville
Get insights into the airlines that provide service to Jacksonville. 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 Jacksonville. Reviews last updated August 4, 2026.
Get a feel of what it's like to fly with Delta and American Airlines from Ontario to Jacksonville by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Boarding
8.1
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Boarding
8.1
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Jacksonville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
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Other flight options
Other flights from Ontario
Popular flights
Alternative routes for Ontario to Jacksonville
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Jacksonville by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Jacksonville by cabin class
Find flights from Ontario to Jacksonville, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Jacksonville
Explore flights to Jacksonville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 4, 2026.
Ontario and Jacksonville flights
Browse other Ontario and Jacksonville flight options. Last updated on August 4, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on August 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Ontario to Jacksonville
Discover the top 2 airlines that operate flights from Ontario to Jacksonville. 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 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$203 | Average$518 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$356 | Average$594 | FlexibilityNo cancel fee | On-time71% |