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$195+ Cheap flights from Wilmington to Ontario (ILM - 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — ONT
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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Cheap flight deals from Wilmington to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Wilmington (ILM) 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 November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$309
(Delta)

One-way from

$195
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$520
Provider with most accurate pricing for Wilmington New Hanover County-Ontario flight deals.
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Provider most trusted by Cheapflights users for Wilmington New Hanover County-Ontario flights.
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From Wilmington New Hanover County to Ontario
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One-way flight from Wilmington New Hanover County to Ontario
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Highest demand for flights based on searches. 18% potential increase in price ($104 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Wilmington to Ontario

Cheapest flights from Wilmington to Ontario
Explore the most affordable flight options available from Wilmington to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

This Delta deal was found by Cheapflights users on 11/24. 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.
Thu 12/46:02 pmILM - ONT
1 stop8h 02mDelta
Wed 12/107:05 amONT - ILM
1 stop7h 11mDelta
Deal found 11/24$439
This American Airlines deal was found by Cheapflights users on 11/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/44:12 pmILM - ONT
2 stops10h 43mAmerican Airlines
Wed 12/109:59 amONT - ILM
2 stops9h 40mAmerican Airlines
Deal found 11/24$449
This United Airlines deal was found by Cheapflights users on 11/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:00 amILM - ONT
2 stops14h 37mUnited Airlines
Wed 12/106:00 amONT - ILM
3 stops14h 54mUnited Airlines
Deal found 11/24$477
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Wed 12/106:00 amILM - ONT
2 stops14h 37mUnited Airlines
Sun 12/146:00 amONT - ILM
2 stops14h 54mUnited Airlines
Deal found 11/25$499
This American Airlines deal was found by Cheapflights users on 11/25. 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.
Fri 11/285:22 pmILM - ONT
1 stop8h 01mAmerican Airlines
Sun 11/3010:34 pmONT - ILM
1 stop6h 43mAmerican Airlines
Deal found 11/25$569
This United Airlines deal was found by Cheapflights users on 11/26. 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.
Thu 12/116:00 amILM - ONT
2 stops19h 49mUnited Airlines
Mon 12/156:00 amONT - ILM
2 stops14h 54mUnited Airlines
Deal found 11/26$652
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Wed 12/176:00 amILM - ONT
2 stops17h 42mUnited Airlines
Sun 12/2111:59 pmONT - ILM
2 stops13h 24mUnited Airlines
Deal found 11/25$704

Cheapflights Fare Finder

 
Customize your flight search to find flights from Wilmington 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 November 26, 2025.
Use the filters below to find and compare flights from Wilmington to Ontario that are best for you.

Fly from

Wilmington

Fly to

Ontario

Route

Depart

Return

Price

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Thu 1/8

2:32 pm-9:05 pm

1 stop9h 33m

Ontario

Wed 1/14

12:41 pm-11:51 pm

1 stop8h 10m

$309

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 1/24

4:30 pm-9:05 pm

1 stop7h 35m

Ontario

Tue 1/27

10:30 pm-9:38 am

1 stop8h 08m

$309

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 1/24

11:57 am-6:20 pm

2 stops9h 23m

Ontario

Tue 1/27

6:22 am-10:57 pm

2 stops13h 35m

$419

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Wed 12/10

6:00 am-5:37 pm

2 stops14h 37m

Ontario

Sun 12/14

6:00 am-11:54 pm

2 stops14h 54m

$499

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Thu 1/1

6:00 am-9:07 pm

2 stops18h 07m

Ontario

Thu 1/8

6:00 am-11:57 pm

2 stops14h 57m

$619

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Thu 12/4

2:10 pm-4:33 pm

2 stops29h 23m

$195

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 12/20

4:35 pm-11:23 pm

1 stop9h 48m

$343

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Mon 12/15

6:00 am-5:37 pm

2 stops14h 37m

$444

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 12/20

4:33 pm-8:58 pm

1 stop7h 25m

$485

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Thu 12/4

5:13 pm-11:55 pm

1 stop9h 42m

$485

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Showing 1-10 of 13 results
1
2

Compare providers for flights from Wilmington 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 Wilmington to Ontario in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 Wilmington-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Wilmington-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Wilmington-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Wilmington-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Wilmington-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 Wilmington to Ontario

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

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

Currently, June is the cheapest month in which you can book a flight from Wilmington to Ontario (average of $178). Flying from Wilmington to Ontario in May is currently the most expensive (average of $289). 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.

How much does it cost to fly round-trip from Wilmington to Ontario?

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 November 26, 2025.
Peruse reviews from past customers who have flown with Delta and American Airlines from Wilmington 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
7.9
Good
7,999 reviews

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

Entertainment

7.9

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
7.9
Good
7,999 reviews
Delta
7.9
Good
7,999 reviews

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

Entertainment

7.9

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
American Airlines
7.2
Good
11,038 reviews
Delta
7.9
Good
7,999 reviews

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

Entertainment

7.9

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 Wilmington 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 Wilmington to Ontario?

    For as low as $309, Delta can have you in Ontario from Wilmington in 9h 33m. The distance between Wilmington and Ontario is about 2253 mi.

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

    Cheapflights users have booked flights from Wilmington to Ontario round-trip from $364. Another airline that can offer you cheap pricing is American Airlines. Delta is priced at 19% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, June is the cheapest month in which you can book a flight from Wilmington to Ontario (average of $178). Flying from Wilmington to Ontario in May is currently the most expensive (average of $289). 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 2 airlines flying from Wilmington to Ontario

Discover the top 2 airlines that operate flights from Wilmington 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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$364Average$458FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$368Average$427FlexibilityNo cancel feeOn-time71%

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