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

Cheapflights users have booked flights from Wilmington to Ontario round-trip from $309. Other airlines that can offer you cheap pricing are American Airlines, from $379, and United Airlines, from $562. Delta is priced at 39% lower than the current average price of a flight leaving 3 months from now.

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

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

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

Departing on a Friday is a good option for securing a great price. You can expect to save up to 67% when planning your travel around this day of the week.

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

Users have found that booking a flight from Wilmington to Ontario at least 40 days early can save you up to 57% on average compared to booking a flight this week. If booking 40 days before your flight isn’t an option for you, users have found flights from Wilmington to Ontario for as little as $413 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $498 for flights departing within the next 3 days.

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

The best pricing can be found in the month of March. Prices to Ontario from Wilmington average $467. You can even find prices in March for less than $467, as users have found deals to Ontario from as low as $282. The month of December appears to be one of the more expensive times to travel to Ontario from Wilmington. Flying in the targeted month can save you up to 25%.

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

Unlike at noon, when flights are generally more expensive, you can save up to 4% on flights from Wilmington to Ontario by exploring options for tickets in the morning.

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.

$270+ Flights from Wilmington to Ontario - Compare & Save Big

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1. Tell us where you want to go

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Cheap flight deals from Wilmington to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$309 (Delta)
One-way from	$270 (Delta)
Popular in	May
Cheapest in	January
Average price	$756

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. 16% potential increase in price ($103 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2025

Search Deals

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 May 1, 2025.

Mon 5/196:28 pmILM - ONT

1 stop7h 01mDelta

Mon 5/2610:00 pmONT - ILM

1 stop8h 42mDelta

Deal found 4/28

$309

Thu 5/223:17 pmILM - ONT

1 stop8h 48mAmerican Airlines

Mon 5/267:25 pmONT - ILM

2 stops9h 59mAmerican Airlines

Deal found 4/29

$379

Fri 6/65:10 pmILM - ONT

1 stop8h 16mUnited Airlines

Wed 6/115:10 amONT - ILM

2 stops30h 20mUnited Airlines

Deal found 4/29

$562

Fri 8/152:15 pmILM - ONT

2 stops12h 58mAlaska Airlines

Mon 9/16:00 amONT - ILM

2 stops11h 49mAlaska Airlines

Deal found 4/29

$910

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 May 1, 2025.

Mon 5/196:28 pmILM - ONT

1 stop7h 01mDelta

Mon 5/2610:00 pmONT - ILM

1 stop8h 42mDelta

Deal found 4/28

$309

Thu 5/223:17 pmILM - ONT

1 stop8h 48mAmerican Airlines

Mon 5/267:25 pmONT - ILM

2 stops9h 59mAmerican Airlines

Deal found 4/29

$379

Fri 6/65:10 pmILM - ONT

1 stop8h 16mUnited Airlines

Wed 6/115:10 amONT - ILM

2 stops30h 20mUnited Airlines

Deal found 4/29

$562

Fri 8/152:15 pmILM - ONT

2 stops12h 58mAlaska Airlines

Mon 9/16:00 amONT - ILM

2 stops11h 49mAlaska Airlines

Deal found 4/29

$910

Last-minute flights from Wilmington to Ontario
Discover last-minute flight deals from Wilmington to Ontario. Data last updated May 1, 2025 and is based on user searches.

Mon 5/196:28 pmILM - ONT

1 stop7h 01mDelta

Fri 5/3012:18 pmONT - ILM

1 stop8h 34mDelta

Deal found 4/28

$309

Thu 5/223:17 pmILM - ONT

1 stop8h 48mAmerican Airlines

Mon 5/267:25 pmONT - ILM

2 stops9h 59mAmerican Airlines

Deal found 4/29

$379

Fri 5/235:10 pmILM - ONT

3 stops32h 35mUnited Airlines

Mon 5/266:32 pmONT - ILM

2 stops40h 58mUnited Airlines

Deal found 4/29

$788

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 May 1, 2025.

Mon 7/285:50 pmILM - ONT

1 stop7h 37mDelta

Deal found 4/30

$270

Mon 6/165:10 pmILM - ONT

1 stop8h 16mUnited Airlines

Deal found 4/29

$320

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

Mon 5/19

6:28 pm-10:29 pm

1 stop7h 01m

Ontario

Fri 5/30

12:18 pm-11:52 pm

1 stop8h 34m

$309

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Thu 5/22

3:17 pm-9:05 pm

1 stop8h 48m

Ontario

Mon 5/26

7:25 pm-8:24 am

2 stops9h 59m

$379

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Fri 6/6

5:10 pm-10:26 pm

1 stop8h 16m

Ontario

Wed 6/11

5:10 am-2:30 pm

2 stops30h 20m

$562

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Fri 8/15

2:15 pm-12:13 am

2 stops12h 58m

Ontario

Mon 9/1

6:00 am-8:49 pm

2 stops11h 49m

$910

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Mon 7/28

5:50 pm-10:27 pm

1 stop7h 37m

$270

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

Mon 6/16

5:10 pm-10:26 pm

1 stop8h 16m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 May.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust 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

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

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

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

9,968 reviews

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,934 reviews

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,696 reviews

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What are the cheapest airlines flying from Wilmington to Ontario round-trip?
Cheapflights users have booked flights from Wilmington to Ontario round-trip from $309. Other airlines that can offer you cheap pricing are American Airlines, from $379, and United Airlines, from $562. Delta is priced at 39% 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, 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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Other flights to Ontario

Top 2 airlines flying from Wilmington to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$308	Average$463	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$332	Average$476	FlexibilityNo cancel fee	On-time71%

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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 7/28. 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

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 May 1, 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 May 1, 2025.

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 May.

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?

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

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 May 1, 2025.

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 are the cheapest airlines flying 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

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Alternative routes for Wilmington to Ontario

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

Top 2 airlines 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 May 1, 2025.