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

Flying on American Airlines is currently your cheapest option to Wilmington, with prices starting at $356. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $369 and $518, respectively. You may be able to fly from Ontario to Wilmington for 24% less than the average price by searching for these airlines.

What is the cheapest day to fly from Ontario to Wilmington?

Travelers seeking maximum savings on their Ontario to Wilmington flight should consider departing on Monday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Wilmington ranges from 2.8 - 7.8 inches per month. September is typically the wettest month, when rainfall can reach 7.8 in. April is typically the driest time to visit Wilmington when rainfall is around 2.8 in.

If weather is an important factor for your trip to Wilmington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 46.4 F).

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

Users have found that flying from Ontario to Wilmington on a Wednesday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Ontario to Wilmington?

To save on the cost of your flight from Ontario to Wilmington, book at least 38 days before your planned departure. Booking around this time can save you about 62% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $356 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $498.

What is the cheapest month to fly from Ontario to Wilmington?

March can be a great time to fly to Wilmington from Ontario with a flight ticket averaging about $471. Cheapflights users have found deals in the month of March for as cheap as $308. The most expensive prices can be found in the month of December.

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

It’s optimal to fly from Ontario to Wilmington at noon. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight in the morning.

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.

$240+ Flights from Ontario to Wilmington

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Cheap flight deals from Ontario to Wilmington

Round-trip from	$356 (American Airlines)
One-way from	$240 (United Airlines)
Popular in	March
Cheapest in	January
Average price	$413

From Ontario to Wilmington New Hanover County

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One-way flight from Ontario to Wilmington New Hanover County

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Highest demand for flights based on searches. 14% potential increase in price ($80 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find 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 July 31, 2025.

Fri 8/2911:59 pmONT - ILM

1 stop9h 15mAmerican Airlines

Wed 9/38:20 amILM - ONT

2 stops12h 56mAmerican Airlines

Deal found 7/30

$356

Fri 9/2611:55 amONT - ILM

1 stop7h 51mDelta

Tue 10/75:55 pmILM - ONT

1 stop7h 17mDelta

Deal found 7/31

$369

Sat 8/165:05 amONT - ILM

1 stop7h 26mUnited Airlines

Wed 8/207:05 amILM - ONT

2 stops13h 32mUnited Airlines

Deal found 7/31

$518

Best flights from Ontario to Wilmington
Discover carefully curated flight deals from Ontario to Wilmington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Fri 8/2911:59 pmONT - ILM

1 stop9h 15mAmerican Airlines

Wed 9/38:20 amILM - ONT

2 stops12h 56mAmerican Airlines

Deal found 7/30

$356

Fri 9/2611:55 amONT - ILM

1 stop7h 51mDelta

Tue 10/75:55 pmILM - ONT

1 stop7h 17mDelta

Deal found 7/31

$369

Sat 8/165:05 amONT - ILM

1 stop7h 26mUnited Airlines

Wed 8/207:05 amILM - ONT

2 stops13h 32mUnited Airlines

Deal found 7/31

$518

Last-minute flights from Ontario to Wilmington
Discover last-minute flight deals from Ontario to Wilmington. Data last updated July 31, 2025 and is based on user searches.

Wed 8/67:00 amONT - ILM

2 stops11h 59mUnited Airlines

Thu 8/144:59 pmILM - ONT

1 stop8h 07mUnited Airlines

Deal found 7/31

$1,018

Sat 8/165:05 amONT - ILM

1 stop7h 26mUnited Airlines

Wed 8/207:05 amILM - ONT

2 stops13h 32mUnited Airlines

Deal found 7/31

$518

Fri 8/226:00 amONT - ILM

2 stops11h 50mAlaska Airlines

Mon 8/252:16 pmILM - ONT

2 stops12h 37mAlaska Airlines

Deal found 7/29

$855

Sat 8/2311:45 amONT - ILM

1 stop8h 27mDelta

Tue 8/262:35 pmILM - ONT

1 stop7h 36mDelta

Deal found 7/31

$394

Fri 8/2911:59 pmONT - ILM

1 stop9h 15mAmerican Airlines

Wed 9/38:20 amILM - ONT

2 stops12h 56mAmerican Airlines

Deal found 7/30

$356

One-way flights from Ontario to Wilmington
Search for one-way flight options from Ontario to Wilmington. Find affordable one-way fares based on user searches. Data last updated July 31, 2025.

Sun 9/76:04 amONT - ILM

2 stops14h 05mUnited Airlines

Deal found 7/31

$240

Thu 8/710:05 pmONT - ILM

1 stop8h 38mDelta

Deal found 7/31

$310

Fly from

Fly to

Route

Depart

Return

Price

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Fri 8/29

11:59 pm-12:14 pm

1 stop9h 15m

Wilmington New Hanover County

Wed 9/3

8:20 am-6:16 pm

2 stops12h 56m

$356

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Fri 9/26

11:55 am-10:46 pm

1 stop7h 51m

Wilmington New Hanover County

Tue 10/7

5:55 pm-10:12 pm

1 stop7h 17m

$369

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Sat 8/16

5:05 am-3:31 pm

1 stop7h 26m

Wilmington New Hanover County

Wed 8/20

7:05 am-5:37 pm

2 stops13h 32m

$518

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Sun 9/7

6:04 am-11:09 pm

2 stops14h 05m

$240

OntarioWilmington

ONT - ILM

ONTILM

Ontario

Thu 8/7

10:05 pm-9:43 am

1 stop8h 38m

$310

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 $296). Flying from Ontario to Wilmington in December is currently the most expensive (average of $385). 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

Read reviews from past customers who have flown Delta, United Airlines, 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

8.0

Very good

7,981 reviews

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

8.0

Very good

7,981 reviews

Delta

8.0

Very good

7,981 reviews

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

United Airlines

7.4

Good

8,900 reviews

Delta

8.0

Very good

7,981 reviews

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

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,981 reviews

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

What are the cheapest airlines flying from Ontario to Wilmington round-trip?
Flying on American Airlines is currently your cheapest option to Wilmington, with prices starting at $356. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $369 and $518, respectively. You may be able to fly from Ontario to Wilmington for 24% 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 $296). Flying from Ontario to Wilmington in December is currently the most expensive (average of $385). 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 Ontario to Wilmington

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$308	Average$448	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$333	Average$499	FlexibilityNo cancel fee	On-time71%

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$240+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Wilmington with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Wilmington

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Wilmington

Cheapest flights from Ontario to WilmingtonExplore 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 July 31, 2025.

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 July 31, 2025.

Cheapflights Fare Finder

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

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.

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?

Reviews of airlines servicing Wilmington

Read reviews from past customers who have flown Delta, United Airlines, 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.

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.

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

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

How can I find direct flights from Ontario to Wilmington?

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

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

Traveling to a place near Wilmington?

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Alternative routes for Ontario to Wilmington

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Top 2 airlines flying from Ontario to Wilmington

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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 July 31, 2025.