ONT - ILM

$329 Find Cheap Flights from Ontario to Wilmington

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Wilmington departing on 2/27. 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 Wilmington

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

Cheapest round-trip
$329
American Airlines
Fri 2/27Mon 3/2
ONT - ILM • 1 stop
Cheapest one-way
$462
United Airlines
Mon 6/15
ONT - ILM • 2 stops
Top airlines
American Airlines
Cheapest • from $329 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Wilmington!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Wilmington (ONT-ILM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Wilmington 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 Ontario to Wilmington

Fri, Feb 27 - Mon, Mar 2
American Airlines Logo
10:37 pm - 8:36 am
ONT
-
ILM
6h 59m1 stop
American Airlines Logo
5:11 pm - 10:49 pm
ILM
-
ONT
8h 38m1 stop
$329American Airlines
Fri, Feb 27 - Mon, Mar 2
American Airlines Logo
7:05 pm - 8:36 am
ONT
-
ILM
10h 31m2 stops
American Airlines Logo
5:11 pm - 10:49 pm
ILM
-
ONT
8h 38m1 stop
$334American Airlines
Sat, Apr 4 - Tue, Apr 7
Delta Logo
10:25 pm - 9:30 am
ONT
-
ILM
8h 05m1 stop
Delta Logo
6:00 am - 11:40 am
ILM
-
ONT
8h 40m1 stop
$349Delta
Fri, Feb 27 - Mon, Mar 2
American Airlines Logo
11:59 pm - 12:10 pm
ONT
-
ILM
9h 11m2 stops
American Airlines Logo
1:21 pm - 10:04 pm
ILM
-
ONT
11h 43m2 stops
$364American Airlines
Tue, Jan 13 - Mon, Jan 19
Delta Logo
12:41 pm - 11:51 pm
ONT
-
ILM
8h 10m1 stop
Delta Logo
6:00 am - 11:31 am
ILM
-
ONT
8h 31m1 stop
$414Delta
Wed, Jan 14 - Mon, Jan 19
Delta Logo
5:07 pm - 9:57 am
ONT
-
ILM
13h 50m2 stops
Delta Logo
6:00 am - 11:31 am
ILM
-
ONT
8h 31m1 stop
$419Delta
Thu, Jan 8 - Mon, Jan 12
Delta Logo
10:30 pm - 9:57 am
ONT
-
ILM
8h 27m1 stop
Delta Logo
6:00 am - 11:31 am
ILM
-
ONT
8h 31m1 stop
$439Delta
Sat, Apr 4 - Tue, Apr 7
Delta Logo
10:25 pm - 9:30 am
ONT
-
ILM
8h 05m1 stop
Delta Logo
2:23 pm - 11:50 pm
ILM
-
ONT
12h 27m2 stops
$443Delta
Thu, Jan 8 - Mon, Jan 12
Delta Logo
5:07 pm - 9:57 am
ONT
-
ILM
13h 50m2 stops
Delta Logo
6:00 am - 11:31 am
ILM
-
ONT
8h 31m1 stop
$444Delta
Thu, Jan 8 - Mon, Jan 12
American Airlines Logo
6:22 am - 9:15 pm
ONT
-
ILM
11h 53m2 stops
American Airlines Logo
6:00 am - 12:03 pm
ILM
-
ONT
9h 03m2 stops
$449American Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Wilmington flights

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

Which airlines provide the cheapest flights from Ontario to Wilmington?

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 Ontario to Wilmington were found on American Airlines ($329) and Delta ($349).

Which airlines fly non-stop between Ontario and Wilmington?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Wilmington.

There are 2 airlines that fly nonstop from Ontario to Wilmington. They are American Airlines and Delta. The cheapest airline for this route is Delta, with the best round-trip deal found costing $308. On average, the best prices for this route can be found at Delta.

Good to know

Low seasonJuly
Cheapest flight$329
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 28% increase in price.
Flight from Ontario to Wilmington

When to book flights from Ontario to Wilmington

Are your dates flexible? Find out the best times to travel from Ontario to Wilmington 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 Ontario to Wilmington

  • What is the cheapest flight from Ontario to Wilmington?

    In the last 3 days, the lowest price for a flight from Ontario to Wilmington was $462 for a one-way ticket and $329 for a round-trip.

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

    No, a passport isn't needed to fly from Ontario to Wilmington. However, local authorities might ask for an official ID.

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

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

  • Which airline alliances offer flights from Ontario to Wilmington?

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Wilmington are Delta and American Airlines. With an average price for the route of $453 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 $498 and an overall rating of 7.2.

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

    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 Ontario to Wilmington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Wilmington from Ontario 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 Ontario to Wilmington?

    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 Wilmington with an airline and back to Ontario with another airline. Booking your flights between Ontario and ILM 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 Ontario to Wilmington?

    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 Wilmington from Ontario 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 Ontario to Wilmington

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Wilmington. 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 Ontario to Wilmington? 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 8014 reviews
8.1Boarding
7.9Comfort
8.5Crew
7.9Entertainment
7.3Food
Airline reviews

The flight was delayed for about 2 hrs. Other than it, it was good.

8.0 ExcellentWen, Dec 2025
LAX - MSY
Read more Delta reviews

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

Experience was good, however I had a delay due to weather happening and had to re purchase a seat on a new plane for a higher price (could be my own issue and misunderstanding) but other than that situation. First time flyer (by myself) was terrific!! The last from ORD to ALO didn't have wifi, but it was only 45 minutes so I'm sure that was part of the reason. Overall my experience was great! Next time I will remember to buy tickets with longer layovers. The delays really saved my overall anxiety. :)

Did not understand a single word the attendant said on the pa system. I was glad it was not an emergency.

My flight was delayed about three hours. I got home at 3:30 in the morning very bad experience.

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.

Did not get any refreshments. Crew was very nice but limited. Small seats

The flight was flawless and we even arrived between 20 and 25 minutes early!

Typically flights with AA are good. The staff are pleasant, welcoming, and efficient.

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

We had 3 flights. 1 & 2 were on the same plane but we had to de-board just to re-board 30 mins later. That may have been due to a crew change though. Our 3rd flight had a couple “maintenance” issues that held us up. They were quickly resolved but it took forever for someone to bring the paperwork needed so we could leave. Apparently there was a computer glitch so a driver had to bring a physical copy. It delayed us about 1 1/2 hrs. The flights themselves were smooth & no problems. For boarding, I don’t know why they don’t start with the back of the plane & move forward. It would eliminate the back up from people trying to find their seats & put their bags in the overhead bins. Unless you’re on an overseas flight, there is no food, you get a beverage & either a small bag of pretzels or a biscuit cookie. Take your own food or snacks of you want something more.

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

Information on your arrival and departure airports