How long is the flight from Wilmington to Ontario?

For as low as $354, Delta can have you in Ontario from Wilmington in 7h 35m. The distance between Wilmington and Ontario is about 2253 mi.

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 $368. American Airlines is priced at 19% lower than the current average price of a flight leaving 3 months from now.

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.

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).

What is the cheapest time of day to fly from ILM to ONT?

When flying from Wilmington to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

$275+ Flights from Wilmington to Ontario

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Cheap 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 December 28, 2025.

Tue 12/306:00 amILM - ONT

2 stops14h 43mUnited Airlines

Thu 1/16:10 amONT - ILM

2 stops14h 34mUnited Airlines

Deal found 12/26

$775

Wed 12/312:38 pmILM - ONT

1 stop9h 20mAmerican Airlines

Fri 1/27:18 pmONT - ILM

2 stops10h 18mAmerican Airlines

Deal found 12/27

$916

Best flights from Wilmington to Ontario
Discover carefully curated flight deals from Wilmington to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

Sat 1/174:30 pmILM - ONT

1 stop7h 35mDelta

Mon 1/2610:30 pmONT - ILM

1 stop8h 08mDelta

Deal found 12/27

$354

Sat 1/176:00 amILM - ONT

2 stops14h 51mUnited Airlines

Wed 1/288:00 amONT - ILM

2 stops12h 57mUnited Airlines

Deal found 12/27

$499

Sat 1/174:30 pmILM - ONT

1 stop7h 35mDelta

Wed 1/2810:30 pmONT - ILM

1 stop8h 08mDelta

Deal found 12/27

$354

Tue 1/133:00 pmILM - ONT

1 stop9h 05mDelta

Tue 1/2712:41 pmONT - ILM

1 stop8h 10mDelta

Deal found 12/26

$359

Fri 1/162:32 pmILM - ONT

1 stop9h 33mDelta

Wed 1/2810:30 pmONT - ILM

1 stop8h 08mDelta

Deal found 12/26

$384

Tue 1/136:00 amILM - ONT

2 stops14h 51mUnited Airlines

Tue 1/278:00 amONT - ILM

2 stops12h 57mUnited Airlines

Deal found 12/26

$559

Thu 1/156:00 amILM - ONT

1 stop8h 31mDelta

Wed 1/2810:30 pmONT - ILM

1 stop8h 08mDelta

Deal found 12/26

$439

Wed 1/146:00 amILM - ONT

2 stops14h 43mUnited Airlines

Sat 1/176:00 amONT - ILM

2 stops14h 57mUnited Airlines

Deal found 12/25

$559

Last-minute flights from Wilmington to Ontario
Discover last-minute flight deals from Wilmington to Ontario. Data last updated December 28, 2025 and is based on user searches.

Sat 1/106:00 amILM - ONT

2 stops17h 58mUnited Airlines

Sat 1/176:00 amONT - ILM

2 stops14h 57mUnited Airlines

Deal found 12/26

$592

Sat 1/106:00 amILM - ONT

2 stops17h 58mUnited Airlines

Wed 1/148:00 amONT - ILM

2 stops12h 57mUnited Airlines

Deal found 12/26

$622

Tue 1/133:00 pmILM - ONT

1 stop9h 05mDelta

Tue 1/2712:41 pmONT - ILM

1 stop8h 10mDelta

Deal found 12/26

$359

Tue 1/136:00 amILM - ONT

2 stops14h 51mUnited Airlines

Tue 1/278:00 amONT - ILM

2 stops12h 57mUnited Airlines

Deal found 12/26

$559

Thu 1/156:00 amILM - ONT

1 stop8h 31mDelta

Wed 1/2810:30 pmONT - ILM

1 stop8h 08mDelta

Deal found 12/26

$439

Fri 1/162:32 pmILM - ONT

1 stop9h 33mDelta

Wed 1/2810:30 pmONT - ILM

1 stop8h 08mDelta

Deal found 12/26

$384

Sat 1/174:30 pmILM - ONT

1 stop7h 35mDelta

Mon 1/2610:30 pmONT - ILM

1 stop8h 08mDelta

Deal found 12/27

$354

Sat 1/176:00 amILM - ONT

2 stops14h 51mUnited Airlines

Mon 1/266:00 amONT - ILM

2 stops14h 57mUnited Airlines

Deal found 12/27

$469

Sat 1/176:00 amILM - ONT

2 stops14h 51mUnited Airlines

Wed 1/288:00 amONT - ILM

2 stops12h 57mUnited Airlines

Deal found 12/27

$499

Tue 1/204:26 pmILM - ONT

2 stops23h 21mUnited Airlines

Fri 1/231:24 pmONT - ILM

2 stops31h 33mUnited Airlines

Deal found 12/26

$578

Sat 1/246:00 amILM - ONT

2 stops17h 58mUnited Airlines

Wed 1/286:00 amONT - ILM

2 stops14h 57mUnited Airlines

Deal found 12/25

$596

One-way flights from Wilmington to Ontario
Search for one-way flight options from Wilmington to Ontario. Find affordable one-way fares based on user searches. Data last updated December 28, 2025.

Tue 1/204:26 pmILM - ONT

2 stops23h 21mUnited Airlines

Deal found 12/26

$275

Wed 4/227:00 amILM - ONT

2 stops14h 28mDelta

Deal found 12/26

$333

Mon 1/196:00 amILM - ONT

1 stop8h 31mDelta

Deal found 12/26

$353

Mon 1/196:00 amILM - ONT

2 stops14h 43mUnited Airlines

Deal found 12/26

$408

Wed 4/225:11 pmILM - ONT

3 stops19h 45mUnited Airlines

Deal found 12/26

$611

Find flight deals from Wilmington to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$354 (Delta)
One-way from	$275 (United Airlines)
Popular in	May
Cheapest in	February
Average price	$458

Provider with most accurate pricing for Wilmington New Hanover County-Ontario flight deals.

Search Deals

Provider most trusted by Cheapflights users for Wilmington New Hanover County-Ontario flights.

Search Deals

From Wilmington New Hanover County to Ontario

Search Deals

One-way flight from Wilmington New Hanover County to Ontario

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($102 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Wilmington to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 1/17

4:30 pm-9:05 pm

1 stop7h 35m

Ontario

Mon 1/26

10:30 pm-9:38 am

1 stop8h 08m

$354

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 1/17

4:30 pm-9:05 pm

1 stop7h 35m

Ontario

Wed 1/28

10:30 pm-9:38 am

1 stop8h 08m

$354

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Tue 1/13

3:00 pm-9:05 pm

1 stop9h 05m

Ontario

Tue 1/27

12:41 pm-11:51 pm

1 stop8h 10m

$359

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Fri 1/16

2:32 pm-9:05 pm

1 stop9h 33m

Ontario

Wed 1/28

10:30 pm-9:38 am

1 stop8h 08m

$384

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Thu 1/15

6:00 am-11:31 am

1 stop8h 31m

Ontario

Wed 1/28

10:30 pm-9:38 am

1 stop8h 08m

$439

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Sat 1/17

6:00 am-5:51 pm

2 stops14h 51m

Ontario

Wed 1/28

8:00 am-11:57 pm

2 stops12h 57m

$499

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Tue 1/13

6:00 am-5:51 pm

2 stops14h 51m

Ontario

Tue 1/27

8:00 am-11:57 pm

2 stops12h 57m

$559

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Wed 1/14

6:00 am-5:43 pm

2 stops14h 43m

Ontario

Sat 1/17

6:00 am-11:57 pm

2 stops14h 57m

$559

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Tue 1/20

4:26 pm-12:47 pm

2 stops23h 21m

$275

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Wed 4/22

7:00 am-6:28 pm

2 stops14h 28m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 14 results

Compare providers for flights from Wilmington to Ontario

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Wilmington to Ontario in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 August is currently the most expensive (average of $284). 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

Peruse reviews from past customers who have flown with 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.

American Airlines

7.2

Good

11,072 reviews

Reviews

1 / 20

8.0

Excellent

Aaron,Sep 2023

CLT - ORD

The extra cost of first class was not worth it.

American Airlines

7.2

Good

11,072 reviews

American Airlines

7.2

Good

11,072 reviews

Reviews

1 / 20

8.0

Excellent

Aaron,Sep 2023

CLT - ORD

The extra cost of first class was not worth it.

Related info for your journey

How long is the flight from Wilmington to Ontario?
For as low as $354, Delta can have you in Ontario from Wilmington in 7h 35m. The distance between Wilmington and Ontario is about 2253 mi.
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 $368. American Airlines 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 August is currently the most expensive (average of $284). 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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Other flights to Ontario

Top airline flying from Wilmington to Ontario

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$368	Average$427	FlexibilityNo cancel fee	On-time71%

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$275+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Wilmington to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Wilmington to Ontario

Cheapest flights from Wilmington to OntarioExplore 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 December 28, 2025.

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 December 28, 2025.

Find flight deals from Wilmington to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Wilmington to Ontario that are best for you.

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 December.

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.

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?

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with 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.

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?

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

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

How can I find direct flights from Wilmington to Ontario?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Wilmington to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Wilmington to Ontario

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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 December 28, 2025.