ILM - ONT

$202 Find Cheap Flights from Wilmington to Ontario - Compare and Save

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 8/4. 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

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Everything you should know

Cheapest round-trip
$429
Typical prices: $404-$434
American Airlines
Wed 8/19Sat 8/29
ILM - ONT • 1 stop
Cheapest one-way
$202
Multiple Airlines
Tue 8/4
ILM - ONT • 2 stops
Top airlines
Cheapest • from $429 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Wilmington and Ontario. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $448 (round-trip)
Shortest trip • 7h 39m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+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

Wed, Aug 19 - Sat, Aug 29
American Airlines Logo
7:46 am - 1:31 pm
ILM
-
ONT
8h 45m
1 stop
American Airlines Logo
10:29 am - 11:05 pm
ONT
-
ILM
9h 36m
1 stop
$429American Airlines
Sat, Oct 17 - Wed, Oct 21
Delta Logo
6:30 am - 11:08 am
ILM
-
ONT
7h 38m
1 stop
Delta Logo
12:18 pm - 11:10 pm
ONT
-
ILM
7h 52m
1 stop
$454Delta
Thu, Aug 20 - Sat, Aug 29
American Airlines Logo
7:46 am - 11:43 am
ILM
-
ONT
6h 57m
1 stop
American Airlines Logo
6:00 am - 3:44 pm
ONT
-
ILM
6h 44m
1 stop
$482American Airlines
Wed, Aug 19 - Sat, Aug 29
American Airlines Logo
7:46 am - 1:31 pm
ILM
-
ONT
8h 45m
1 stop
American Airlines Logo
6:15 am - 11:05 pm
ONT
-
ILM
13h 50m
2 stops
$499American Airlines
Tue, Oct 27 - Sat, Oct 31
United Airlines Logo
6:00 am - 6:29 pm
ILM
-
ONT
15h 29m
2 stops
United Airlines Logo
6:00 am - 11:40 pm
ONT
-
ILM
14h 40m
2 stops
$519United Airlines
Thu, Aug 13 - Thu, Aug 20
American Airlines Logo
4:53 pm - 10:59 pm
ILM
-
ONT
9h 06m
1 stop
American Airlines Logo
12:33 pm - 11:05 pm
ONT
-
ILM
7h 32m
1 stop
$535American Airlines
Sat, Aug 15 - Sat, Aug 22
American Airlines Logo
7:46 am - 11:43 am
ILM
-
ONT
6h 57m
1 stop
American Airlines Logo
6:00 am - 3:44 pm
ONT
-
ILM
6h 44m
1 stop
$539American Airlines
Tue, Oct 27 - Sat, Oct 31
United Airlines Logo
6:00 am - 6:29 pm
ILM
-
ONT
15h 29m
2 stops
United Airlines Logo
6:00 am - 11:40 pm
ONT
-
ILM
14h 40m
2 stops
$549United Airlines
Thu, Aug 20 - Sat, Aug 29
American Airlines Logo
7:46 am - 11:43 am
ILM
-
ONT
6h 57m
1 stop
American Airlines Logo
6:15 am - 11:05 pm
ONT
-
ILM
13h 50m
2 stops
$552American Airlines
Wed, Jul 15 - Mon, Jul 27
United Airlines Logo
3:41 pm - 10:51 pm
ILM
-
ONT
10h 10m
1 stop
United Airlines Logo
6:39 pm - 12:12 pm
ONT
-
ILM
14h 33m
2 stops
$555United 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.

How much is a round-trip flight from Wilmington to Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Wilmington to Ontario departing in August.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Wilmington to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Wilmington to Ontario is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $564 and $545 respectively.

Good to know

Low seasonOctober
Cheapest flight$202
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 9% increase in price.
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 5 days, the lowest price for a flight from Wilmington to Ontario was $202 for a one-way ticket and $429 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?

    SkyTeam, and oneworld are the airline alliances operating flights between Wilmington and Ontario, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Wilmington to Ontario, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Wilmington to Ontario are Delta and American Airlines. With an average price for the route of $498 and an overall rating of 7.8, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $463 and an overall rating of 7.1.

  • 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 airlines 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.
7.8
DeltaOverall score based on 8454 reviews
7.8Entertainment
7.2Food
7.8Comfort
8.5Crew
8.1Boarding
Airline reviews

Crew was real good, flight was smooth and came in early.

10.0 ExcellentAnonymous, Jun 2026
DTW - SAN
Read more Delta reviews

Crew was real good, flight was smooth and came in early.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Had to wait for a gate for a long time, then waited on the run way for a long time before leaving. The actual flights part was good.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

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

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.

Flight was delayed. Staff at the gate effectively and proactively communicated about the delay.

It was late, then the bathroom was inoperable plus it was very hot as well. Plane was very old

Overall, I had a great flight on American Airlines. The only compliant that I have is that my gate changed 30 minutes before boarding the flight. This was annoying because I had a connection in Charlotte and it's a very big airport.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Our flight was delayed 45 minutes and we missed our connection, while we were able to get a flight the following day the voucher for food did not work.

It was fine. I didn't love the food but it was at least a real attempt at serving a meal, unlike my earlier flight from Nashville to Dallas.

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

Information on your arrival and departure airports