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Wilmington

$249+ Cheap flights from Ontario to Wilmington (ONT - ILM)

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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ILM
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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Cheap flight deals from Ontario to Wilmington

Cheapest flights from Ontario to Wilmington
Explore the most affordable flight options available from Ontario to Wilmington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

This American Airlines deal was found by Cheapflights users on 3/9. 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 5/2310:00 pm
ONT
-
ILM
1 stop7h 30m
American Airlines
Tue 5/263:33 pm
ILM
-
ONT
1 stop10h 03m
American Airlines
Deal found 3/9$409
This Delta deal was found by Cheapflights users on 3/10. 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 5/212:49 pm
ONT
-
ILM
1 stop8h 10m
Delta
Thu 5/76:00 am
ILM
-
ONT
1 stop7h 57m
Delta
Deal found 3/10$429
This Delta deal was found by Cheapflights users on 3/7. 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 4/912:57 pm
ONT
-
ILM
1 stop8h 02m
Delta
Tue 4/142:24 pm
ILM
-
ONT
1 stop9h 36m
Delta
Deal found 3/7$434
This Delta deal was found by Cheapflights users on 3/10. 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 4/1910:15 pm
ONT
-
ILM
1 stop8h 19m
Delta
Tue 4/286:00 am
ILM
-
ONT
1 stop8h 36m
Delta
Deal found 3/10$454
This Delta deal was found by Cheapflights users on 3/10. 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 4/2110:15 pm
ONT
-
ILM
2 stops20h 10m
Delta
Sat 4/254:30 pm
ILM
-
ONT
1 stop7h 30m
Delta
Deal found 3/10$457
This Delta deal was found by Cheapflights users on 3/10. 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 5/410:15 pm
ONT
-
ILM
2 stops20h 10m
Delta
Tue 5/126:00 am
ILM
-
ONT
1 stop7h 57m
Delta
Deal found 3/10$467
This Delta deal was found by Cheapflights users on 3/9. 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 5/710:00 pm
ONT
-
ILM
1 stop8h 40m
Delta
Sat 5/96:00 am
ILM
-
ONT
1 stop7h 57m
Delta
Deal found 3/9$468
This Delta deal was found by Cheapflights users on 3/10. 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 5/510:15 pm
ONT
-
ILM
2 stops20h 10m
Delta
Sat 5/96:00 am
ILM
-
ONT
1 stop7h 57m
Delta
Deal found 3/10$472
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Sat 4/187:00 am
ONT
-
ILM
2 stops13h 44m
United Airlines
Sat 4/256:00 am
ILM
-
ONT
2 stops14h 47m
United Airlines
Deal found 3/10$479
This Delta deal was found by Cheapflights users on 3/10. 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 4/410:25 pm
ONT
-
ILM
1 stop8h 02m
Delta
Sat 4/114:30 pm
ILM
-
ONT
1 stop7h 30m
Delta
Deal found 3/10$487
This Delta deal was found by Cheapflights users on 3/10. 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 4/410:25 pm
ONT
-
ILM
1 stop8h 02m
Delta
Fri 4/102:23 pm
ILM
-
ONT
1 stop9h 37m
Delta
Deal found 3/10$488
This United Airlines deal was found by Cheapflights users on 3/7. 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 5/56:00 am
ONT
-
ILM
2 stops14h 44m
United Airlines
Sat 5/96:00 am
ILM
-
ONT
2 stops15h 01m
United Airlines
Deal found 3/7$489

Find flight deals from Ontario to Wilmington

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Wilmington (ILM). 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 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$409
(American Airlines)

One-way from

$249
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$668
Provider with most accurate pricing for Ontario-Wilmington New Hanover County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Wilmington New Hanover County flights.
Search Deals
From Ontario to Wilmington New Hanover County
Search Deals
One-way flight from Ontario to Wilmington New Hanover County
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Wilmington 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 12, 2026.
Use the filters below to find and compare flights from Ontario to Wilmington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Tue 5/5

6:00 am-11:44 pm

2 stops14h 44m

Wilmington New Hanover County

Sat 5/9

6:00 am-6:01 pm

2 stops15h 01m

$489

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Tue 4/21

6:05 am-11:44 pm

2 stops14h 39m

Wilmington New Hanover County

Sat 4/25

6:00 am-5:47 pm

2 stops14h 47m

$510

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Tue 8/4

5:45 am-11:44 pm

2 stops14h 59m

Wilmington New Hanover County

Sat 8/8

4:05 pm-10:46 pm

1 stop9h 41m

$534

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Sat 4/18

7:00 am-11:44 pm

2 stops13h 44m

Wilmington New Hanover County

Tue 4/28

6:00 am-6:02 pm

2 stops15h 02m

$539

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Tue 5/5

10:15 pm-9:34 am

1 stop8h 19m

Wilmington New Hanover County

Fri 5/8

6:16 pm-10:57 am

1 stop19h 41m

$548

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Sat 5/30

5:45 pm-9:40 am

2 stops12h 55m

Wilmington New Hanover County

Sat 6/6

4:46 pm-9:48 pm

1 stop8h 02m

$549

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Wed 3/25

10:25 pm-9:30 am

1 stop8h 05m

Wilmington New Hanover County

Tue 3/31

2:23 pm-9:00 pm

1 stop9h 37m

$586

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Wed 5/6

10:15 pm-9:40 am

1 stop8h 25m

Wilmington New Hanover County

Sun 5/10

6:00 am-10:57 am

1 stop7h 57m

$594

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Wed 4/22

6:05 am-11:44 pm

2 stops14h 39m

Wilmington New Hanover County

Wed 4/29

6:00 am-5:47 pm

2 stops14h 47m

$619
Quickest round-trip

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Mon 6/29

10:59 pm-9:44 am

1 stop7h 45m

Wilmington New Hanover County

Mon 7/6

5:45 pm-10:09 pm

1 stop7h 24m

$633

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Ontario to Wilmington

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 Wilmington in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 Ontario-Wilmington flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Wilmington flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Wilmington flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Wilmington 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-Wilmington 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 Wilmington

Have a flexible travel schedule? Discover the best time to fly to Wilmington from Ontario 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 Ontario to Wilmington

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Wilmington (average of $138). Flying from Ontario to Wilmington in April 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 Wilmington

Get insights into the airlines that provide service to Wilmington. 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 Wilmington. Reviews last updated March 12, 2026.
Read reviews from past customers who have flown Delta and American Airlines from Ontario to Wilmington. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,286 reviews

Entertainment

7.8

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
7.9
Good
8,286 reviews
Delta
7.9
Good
8,286 reviews

Entertainment

7.8

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
American Airlines
7.1
Good
11,435 reviews
Delta
7.9
Good
8,286 reviews

Entertainment

7.8

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Find useful and relevant information for your journey from Ontario to Wilmington. 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 Ontario to Wilmington?

    Airlines like United Airlines fly from Ontario to Wilmington in about 14h 44m. The time it takes to get you to your destination can typically vary by up to . There are 2253 mi between Ontario and Wilmington.

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

    Flying on Delta is currently your cheapest option to Wilmington, with prices starting at $308. Another option worth looking into is American Airlines, starting at $329 round trip. You may be able to fly from Ontario to Wilmington for 38% less than the average price by searching for these airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Wilmington 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 Ontario to Wilmington?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Wilmington (average of $138). Flying from Ontario to Wilmington in April 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

Traveling to a place near Wilmington?

Book flights to Wilmington if you plan to visit one of these locations
Carolina Beach
Topsail Beach
Wrightsville Beach
Kure Beach
Southport

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Top 2 airlines flying from Ontario to Wilmington

Discover the top 2 airlines that operate flights from Ontario to Wilmington. 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$523FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$329Average$513FlexibilityNo cancel feeOn-time71%

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