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$167+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — ONT
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
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 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$309
(Delta)

One-way from

$167
(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 ($100 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 6, 2025.

This Delta deal was found by Cheapflights users on 11/6. 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 12/42:23 pmILM - ONT
1 stop8h 16mDelta
Mon 12/810:25 pmONT - ILM
1 stop8h 16mDelta
Deal found 11/6$309
This Delta deal was found by Cheapflights users on 11/6. 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 11/196:00 amILM - ONT
1 stop7h 34mDelta
Mon 11/2410:25 pmONT - ILM
1 stop8h 13mDelta
Deal found 11/6$439
This Delta deal was found by Cheapflights users on 11/6. 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 11/216:00 amILM - ONT
1 stop8h 06mDelta
Tue 11/2510:25 pmONT - ILM
1 stop8h 13mDelta
Deal found 11/6$549
This American Airlines deal was found by Cheapflights users on 11/5. 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 11/266:20 amILM - ONT
1 stop10h 42mAmerican Airlines
Sun 11/3010:34 pmONT - ILM
1 stop6h 43mAmerican Airlines
Deal found 11/5$596
This American Airlines deal was found by Cheapflights users on 11/6. 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 11/219:10 amILM - ONT
2 stops12h 10mAmerican Airlines
Tue 11/257:30 pmONT - ILM
2 stops9h 47mAmerican Airlines
Deal found 11/6$659
This United Airlines deal was found by Cheapflights users on 11/6. 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 12/136:00 amILM - ONT
2 stops33h 32mUnited Airlines
Wed 12/2411:59 pmONT - ILM
2 stops13h 24mUnited Airlines
Deal found 11/6$682
This United Airlines deal was found by Cheapflights users on 11/6. 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 11/196:00 amILM - ONT
2 stops14h 34mUnited Airlines
Mon 11/247:00 amONT - ILM
2 stops13h 50mUnited Airlines
Deal found 11/6$720
This Delta deal was found by Cheapflights users on 11/5. 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 12/166:00 amILM - ONT
1 stop8h 02mDelta
Sat 1/310:29 pmONT - ILM
1 stop8h 53mDelta
Deal found 11/5$764

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 6, 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

Sat 2/21

4:17 pm-9:07 pm

1 stop7h 50m

Ontario

Wed 2/25

10:20 pm-9:30 am

1 stop8h 10m

$309

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Thu 12/4

2:23 pm-7:39 pm

1 stop8h 16m

Ontario

Mon 12/8

10:25 pm-9:41 am

1 stop8h 16m

$309

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 2/21

6:41 am-4:25 pm

2 stops12h 44m

Ontario

Wed 2/25

6:15 am-9:23 pm

2 stops12h 08m

$419

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Wed 11/19

6:00 am-10:34 am

1 stop7h 34m

Ontario

Mon 11/24

10:25 pm-9:38 am

1 stop8h 13m

$439

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Fri 11/21

6:00 am-11:06 am

1 stop8h 06m

Ontario

Tue 11/25

10:25 pm-9:38 am

1 stop8h 13m

$549

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sun 1/18

5:01 pm-12:03 am

2 stops34h 02m

$167

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sun 11/30

2:10 pm-9:17 pm

3 stops58h 07m

$305

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Mon 1/19

4:26 pm-12:47 pm

2 stops23h 21m

$467

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Tue 11/25

6:25 am-9:49 pm

2 stops18h 24m

$650

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 11/29

6:20 am-11:53 am

1 stop8h 33m

$708

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 14 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 December is currently the most expensive (average of $307). 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 November 6, 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
8,001 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.2

Entertainment

7.9

Comfort

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
8,001 reviews
Delta
7.9
Good
8,001 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.2

Entertainment

7.9

Comfort

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
11,040 reviews
Delta
7.9
Good
8,001 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.2

Entertainment

7.9

Comfort

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 7h 50m. 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 $333. Another airline that can offer you cheap pricing is Delta. American Airlines is priced at 27% 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 December is currently the most expensive (average of $307). 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 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$333Average$418FlexibilityNo cancel feeOn-time71%
DeltaCheapest$364Average$458FlexibilityNo cancel feeOn-timeN/A

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