ILM - ONT

$398 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 8/13. 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
$400
Typical prices: $596-$480
American Airlines
Sat 5/2Sat 5/9
ILM - ONT • 1 stop
Cheapest one-way
$398
Delta
Thu 8/13
ILM - ONT • 2 stops
Top airlines
Cheapest • from $400 (round-trip)
Best reviews • 7.9 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 $480 (round-trip)
Shortest trip • 7h 39m (one-way)
Insights
Insights
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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

Sat, May 2 - Sat, May 9
American Airlines Logo
4:24 pm - 9:07 pm
ILM
-
ONT
7h 43m
1 stop
American Airlines Logo
6:00 am - 4:06 pm
ONT
-
ILM
7h 06m
1 stop
$400American Airlines
Sat, May 9 - Sun, May 17
Delta Logo
6:00 am - 10:57 am
ILM
-
ONT
7h 57m
1 stop
Delta Logo
10:00 pm - 9:40 am
ONT
-
ILM
8h 40m
1 stop
$425Delta
Sat, May 9 - Sun, May 17
American Airlines Logo
1:25 pm - 10:40 pm
ILM
-
ONT
12h 15m
2 stops
American Airlines Logo
6:00 am - 4:06 pm
ONT
-
ILM
7h 06m
1 stop
$430American Airlines
Fri, May 8 - Sun, May 17
Delta Logo
6:00 am - 10:57 am
ILM
-
ONT
7h 57m
1 stop
Delta Logo
10:00 pm - 9:40 am
ONT
-
ILM
8h 40m
1 stop
$449Delta
Fri, May 8 - Sun, May 17
Delta Logo
2:23 pm - 11:34 pm
ILM
-
ONT
12h 11m
2 stops
Delta Logo
10:00 pm - 9:40 am
ONT
-
ILM
8h 40m
1 stop
$454Delta
Tue, Apr 14 - Sat, Apr 18
United Airlines Logo
6:00 am - 6:02 pm
ILM
-
ONT
15h 02m
2 stops
United Airlines Logo
7:00 am - 11:44 pm
ONT
-
ILM
13h 44m
2 stops
$459United Airlines
Sat, May 9 - Sun, May 17
American Airlines Logo
1:25 pm - 10:40 pm
ILM
-
ONT
12h 15m
2 stops
American Airlines Logo
11:59 pm - 12:35 pm
ONT
-
ILM
9h 36m
2 stops
$469American Airlines
Fri, May 8 - Sun, May 17
American Airlines Logo
3:08 pm - 11:46 pm
ILM
-
ONT
11h 38m
2 stops
American Airlines Logo
11:59 pm - 2:13 pm
ONT
-
ILM
11h 14m
2 stops
$492American Airlines
Sat, Apr 11 - Wed, Apr 15
American Airlines Logo
4:50 pm - 10:36 pm
ILM
-
ONT
8h 46m
1 stop
American Airlines Logo
10:59 am - 10:53 pm
ONT
-
ILM
8h 54m
1 stop
$493American Airlines
Sat, Apr 11 - Wed, Apr 15
American Airlines Logo
4:50 pm - 10:36 pm
ILM
-
ONT
8h 46m
1 stop
American Airlines Logo
11:59 pm - 12:35 pm
ONT
-
ILM
9h 36m
2 stops
$498American 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 May.

Good to know

Low seasonOctober
Cheapest flight$398
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 11% 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 $398 for a one-way ticket and $400 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 $463 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $434 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.
7.9
DeltaOverall score based on 8368 reviews
7.9Comfort
8.1Boarding
7.2Food
8.5Crew
7.8Entertainment
Airline reviews

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

10.0 ExcellentLorna, Mar 2026
LIH - LAX
Read more Delta reviews

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The cabin temperature was nice and cool. The wifi was not working.

As previously noted, this flight was great: departure was timely, the crew was friendly and attentive, and wifi connectivity was seamless. In particular, I appreciated that the flight attendant just told me to stow the laptop right before takeoff/landing, and trusted me to do so (which I did!).

Left a few minutes early. Got in 15 minutes early. Very attentive service on board. Very organized boarding.

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

Delayed for mechanical and no updates on what was happening and how long the delay might be.

A first class seat should fit a fat person, and this doesn't. The trays in the armrest are less functional than an ordinary tray in the back of the seat.

The experience at checkin for my American Airlines flight from Sacramento to LAX was very good including the assistance I received in getting my bags checked in and boarding passes printed. Was pleasantly surprised the my bags were checked through all the way to my destination at Clark International Airport in Angeles, Philippines.

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

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.

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

Information on your arrival and departure airports