ILM - ONT

$210 Find Cheap Flights from Wilmington to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Wilmington to Ontario departing on 3/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Wilmington to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Wilmington to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$329
Delta
Thu 5/28Mon 6/1
ILM - ONT • 1 stop
Cheapest one-way
$210
Multiple Airlines
Sun 3/22
ILM - ONT • 2 stops
Top airlines
Delta
Cheapest • from $329 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Wilmington to Ontario (ILM-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Wilmington to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Wilmington to Ontario

Thu, May 28 - Mon, Jun 1
Delta Logo
6:00 am - 10:57 am
ILM
-
ONT
7h 57m
1 stop
Delta Logo
11:04 pm - 9:31 am
ONT
-
ILM
7h 27m
1 stop
$329Delta
Tue, Mar 31 - Tue, Apr 14
Delta Logo
6:00 am - 11:47 am
ILM
-
ONT
8h 47m
1 stop
Delta Logo
10:15 pm - 9:35 am
ONT
-
ILM
8h 20m
1 stop
$359Delta
Thu, Mar 5 - Wed, Mar 11
Delta Logo
2:19 pm - 9:05 pm
ILM
-
ONT
9h 46m
1 stop
Delta Logo
12:57 pm - 11:59 pm
ONT
-
ILM
8h 02m
1 stop
$361Delta
Tue, Mar 31 - Wed, Apr 15
Delta Logo
6:00 am - 11:47 am
ILM
-
ONT
8h 47m
1 stop
Delta Logo
10:15 pm - 9:35 am
ONT
-
ILM
8h 20m
1 stop
$389Delta
Wed, Apr 1 - Tue, Apr 14
Delta Logo
6:00 am - 9:00 pm
ILM
-
ONT
18h 00m
1 stop
Delta Logo
10:15 pm - 9:35 am
ONT
-
ILM
8h 20m
1 stop
$557Delta
Wed, Apr 1 - Wed, Apr 15
Delta Logo
6:00 am - 9:00 pm
ILM
-
ONT
18h 00m
1 stop
Delta Logo
10:15 pm - 9:35 am
ONT
-
ILM
8h 20m
1 stop
$587Delta
Wed, Apr 1 - Mon, Apr 13
Delta Logo
6:00 am - 9:00 pm
ILM
-
ONT
18h 00m
1 stop
Delta Logo
10:15 pm - 9:35 am
ONT
-
ILM
8h 20m
1 stop
$617Delta
Mon, Mar 16 - Sun, Mar 22
Delta Logo
2:23 pm - 11:51 pm
ILM
-
ONT
12h 28m
2 stops
Delta Logo
10:25 pm - 9:30 am
ONT
-
ILM
8h 05m
1 stop
$622Delta
Thu, Apr 2 - Tue, Apr 14
Delta Logo
6:00 am - 11:47 am
ILM
-
ONT
8h 47m
1 stop
Delta Logo
10:15 pm - 9:35 am
ONT
-
ILM
8h 20m
1 stop
$662Delta
Fri, Feb 27 - Tue, Mar 3
United Airlines Logo
6:00 am - 5:41 pm
ILM
-
ONT
14h 41m
2 stops
United Airlines Logo
8:00 am - 11:57 pm
ONT
-
ILM
12h 57m
2 stops
$670United Airlines
Booking Insights

KAYAK's insights & trends for Wilmington to Ontario flights

Get data-powered insights and trends into flights from Wilmington to Ontario to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Wilmington to Ontario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Wilmington to Ontario were found on Delta ($329) and United Airlines ($670).

Find deals

Good to know

Low seasonOctober
Cheapest flight$210
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Wilmington to Ontario

When to book flights from Wilmington to Ontario

Are your dates flexible? Find out the best times to travel from Wilmington to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Wilmington to Ontario

  • What is the cheapest flight from Wilmington to Ontario?

    In the last 3 days, the lowest price for a flight from Wilmington to Ontario was $210 for a one-way ticket and $329 for a round-trip.

  • Do I need a passport to fly between Wilmington and Ontario?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Wilmington to Ontario?

    Wilmington and Ontario are both served by 1 main airport. You will leave Wilmington from Wilmington New Hanover County and will be arriving at Ontario.

  • Which aircraft models fly most regularly from Wilmington to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Wilmington to Ontario?

    oneworld is the only airline alliance operating flights between Wilmington and Ontario.

  • How does KAYAK find such low prices on flights from Wilmington to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Wilmington to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Wilmington to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Wilmington is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Wilmington to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Wilmington with another airline. Booking your flights between Wilmington and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Wilmington to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Wilmington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Wilmington to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Wilmington to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Wilmington to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11297 reviews
8.0Crew
6.4Food
7.2Comfort
7.5Boarding
6.9Entertainment
Airline reviews

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

2.0 MediocreAlan, Feb 2026
BOS - LAX
Read more American Airlines reviews

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

They are always late and seats was also not having working charger

did not have enough meal for first class passengers so offer us snack

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

I had a positive experience on American. I'm blind and traveling with a guide dog and the flight attendants were so kind, friendly, and helpful towards us. They checked in on us during the flight and they made us feel comfortable and welcomed. There was an hour delay before depature, but overall the flight was a smooth ride. I appreciate that there were no issues on this long flight back home.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything you need to know for your flight from Wilmington to Ontario

Information on your arrival and departure airports

Wilmington (ILM)
Ontario (ONT)