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$270+ 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 6/21. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — ONT
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
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 April 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$572
(United Airlines)

One-way from

$270
(Delta)

Popular in

May

Cheapest in

January

Average price

$433
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. 16% potential increase in price ($103 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 15, 2025.

This United Airlines deal was found by Cheapflights users on 4/14. 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.
Mon 6/25:10 pmILM - ONT
1 stop8h 16mUnited Airlines
Tue 6/177:00 amONT - ILM
1 stop28h 30mUnited Airlines
Deal found 4/14$572
This American Airlines deal was found by Cheapflights users on 4/15. 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 7/172:40 pmILM - ONT
1 stop9h 58mAmerican Airlines
Sun 7/2011:59 pmONT - ILM
2 stops11h 01mAmerican Airlines
Deal found 4/15$1,314

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 April 15, 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

Mon 6/2

5:10 pm-10:26 pm

1 stop8h 16m

Ontario

Tue 6/17

7:00 am-2:30 pm

1 stop28h 30m

$572

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 6/21

7:00 am-10:38 am

1 stop6h 38m

$270

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Mon 4/21

12:48 pm-11:20 am

2 stops25h 32m

$291

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Mon 4/21

4:35 pm-11:05 am

2 stops21h 30m

$639

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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, August is the cheapest month in which you can book a flight from Wilmington to Ontario (average of $246). Flying from Wilmington 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 April 15, 2025.
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

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
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

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
United Airlines
7.4
Good
8,658 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

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 Wilmington to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Wilmington to Ontario round-trip?

    Cheapflights users have booked flights from Wilmington to Ontario round-trip from $572.

  • 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, August is the cheapest month in which you can book a flight from Wilmington to Ontario (average of $246). Flying from Wilmington 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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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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$463FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$332Average$476FlexibilityNo cancel feeOn-time71%

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