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Ontario

$329+ Cheap flights from Wilmington to Ontario (ILM - ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — ONT
mrt. 28 — apr. 41
za 3/28
za 4/4
1 adult, Economy
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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 februari 26, 2026.

This Delta deal was found by Cheapflights users on 2/26. 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.
do 5/286:00 am
ILM
-
ONT
1 stop7h 57m
Delta
ma 6/110:00 pm
ONT
-
ILM
1 stop8h 40m
Delta
Deal found 2/26$329
This Delta deal was found by Cheapflights users on 2/23. 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.
do 3/122:23 pm
ILM
-
ONT
1 stop9h 37m
Delta
ma 3/1610:25 pm
ONT
-
ILM
1 stop8h 05m
Delta
Deal found 2/23$359
This Delta deal was found by Cheapflights users on 2/22. 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.
do 3/196:00 am
ILM
-
ONT
1 stop8h 47m
Delta
zo 3/2210:25 pm
ONT
-
ILM
1 stop8h 05m
Delta
Deal found 2/22$419
This Delta deal was found by Cheapflights users on 2/26. 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.
do 5/286:00 am
ILM
-
ONT
1 stop7h 57m
Delta
zo 5/3110:00 pm
ONT
-
ILM
1 stop8h 40m
Delta
Deal found 2/26$424
This Delta deal was found by Cheapflights users on 2/26. 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.
do 6/42:23 pm
ILM
-
ONT
1 stop7h 13m
Delta
di 6/910:59 pm
ONT
-
ILM
1 stop7h 45m
Delta
Deal found 2/26$464
This American Airlines deal was found by Cheapflights users on 2/22. 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.
do 3/195:11 pm
ILM
-
ONT
1 stop9h 48m
American Airlines
za 3/2110:36 pm
ONT
-
ILM
1 stop6h 59m
American Airlines
Deal found 2/22$478
This Delta deal was found by Cheapflights users on 2/24. 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.
wo 3/112:23 pm
ILM
-
ONT
1 stop9h 37m
Delta
zo 3/1510:25 pm
ONT
-
ILM
1 stop8h 05m
Delta
Deal found 2/24$494
This American Airlines deal was found by Cheapflights users on 2/22. 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.
do 3/195:11 pm
ILM
-
ONT
1 stop8h 19m
American Airlines
zo 3/2210:36 pm
ONT
-
ILM
1 stop6h 59m
American Airlines
Deal found 2/22$506
This American Airlines deal was found by Cheapflights users on 2/23. 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.
do 3/125:08 am
ILM
-
ONT
2 stops11h 40m
American Airlines
ma 3/1611:59 pm
ONT
-
ILM
1 stop7h 54m
American Airlines
Deal found 2/23$516
This Delta deal was found by Cheapflights users on 2/22. 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.
do 6/42:23 pm
ILM
-
ONT
1 stop7h 13m
Delta
za 6/1310:59 pm
ONT
-
ILM
1 stop7h 45m
Delta
Deal found 2/22$559

Find 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 februari 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

Popular in

May

Cheapest in

October

Average price

$428
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
Highest demand for flights based on searches. 14% potential increase in price ($81 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 februari 26, 2026.
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

do 5/28

6:00 am-10:57 am

1 stop7h 57m

Ontario

ma 6/1

10:00 pm-9:40 am

1 stop8h 40m

$329

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

do 3/12

2:23 pm-9:00 pm

1 stop9h 37m

Ontario

ma 3/16

10:25 pm-9:30 am

1 stop8h 05m

$359

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

do 6/4

2:23 pm-6:36 pm

1 stop7h 13m

Ontario

di 6/9

10:59 pm-9:44 am

1 stop7h 45m

$464

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

wo 3/11

2:23 pm-9:00 pm

1 stop9h 37m

Ontario

zo 3/15

10:25 pm-9:30 am

1 stop8h 05m

$494

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

do 3/19

5:11 pm-10:30 pm

1 stop8h 19m

Ontario

zo 3/22

10:36 pm-8:35 am

1 stop6h 59m

$506

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

do 6/4

2:23 pm-6:36 pm

1 stop7h 13m

Ontario

za 6/13

10:59 pm-9:44 am

1 stop7h 45m

$559

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

wo 3/11

6:00 am-5:41 pm

2 stops14h 41m

Ontario

zo 3/15

11:59 pm-4:18 pm

2 stops13h 19m

$569

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

do 3/19

6:00 am-10:18 pm

2 stops19h 18m

Ontario

ma 3/23

11:59 pm-4:18 pm

2 stops13h 19m

$607

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

zo 5/31

4:05 pm-10:46 pm

1 stop9h 41m

$430

WilmingtonOntario

ILM - ONT

ILMONT

Wilmington New Hanover County

di 3/3

6:00 am-12:02 pm

1 stop9h 02m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/25

Showing 1-10 of 14 resultsSorted by cheapest first
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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Wilmington-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 $175). Flying from Wilmington to Ontario in February is currently the most expensive (average of $300). 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 februari 26, 2026.
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
11,352 reviews

Boarding

7.5

Comfort

7.2

Food

6.4

Overall

7.2

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,352 reviews
American Airlines
7.2
Good
11,352 reviews

Boarding

7.5

Comfort

7.2

Food

6.4

Overall

7.2

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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 $329, Delta can have you in Ontario from Wilmington in 7h 57m. 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 22% 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 $175). Flying from Wilmington to Ontario in February is currently the most expensive (average of $300). 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 airline flying from Wilmington to Ontario

Discover the top airline 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 februari 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$368Average$434FlexibilityNo cancel feeOn-time71%

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