$430+ Cheap flights from Wilmington to Ontario (ILM - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — ONT
Sep 8 — Sep 151
Round-trip
1 adult, Economy
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Find cheap flights from Wilmington to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Wilmington to Ontario
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Cheapest flights from Wilmington to OntarioExplore 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 August 9, 2026.
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 August 9, 2026.
This American Airlines deal was found by Cheapflights users on 8/7. 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.
Fri 9/44:53 pm -
1 stop9h 06m
Tue 9/812:33 pm -
1 stop8h 11m
Deal found 8/7![American Airlines logo]()
$518
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:44 pm -
1 stop8h 51m
Tue 9/86:00 am -
2 stops14h 57m
Deal found 8/7![United Airlines logo]()
$538
This Delta deal was found by Cheapflights users on 8/8. 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.
Fri 10/95:49 pm -
1 stop7h 05m
Sun 10/1811:15 pm -
1 stop7h 22m
Deal found 8/8![Delta logo]()
$545
This Delta deal was found by Cheapflights users on 8/7. 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.
Sat 9/126:30 am -
1 stop7h 35m
Sat 9/1912:17 pm -
1 stop6h 35m
Deal found 8/7![Delta logo]()
$548
This United Airlines deal was found by Cheapflights users on 8/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:00 am -
2 stops15h 47m
Sat 11/144:17 pm -
2 stops16h 05m
Deal found 8/8![United Airlines logo]()
$570
This Delta deal was found by Cheapflights users on 8/6. 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.
Fri 10/95:49 pm -
1 stop7h 05m
Mon 10/1211:15 pm -
1 stop7h 22m
Deal found 8/6![Delta logo]()
$571
This Delta deal was found by Cheapflights users on 8/6. 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.
Thu 10/86:20 am -
1 stop18h 34m
Mon 10/1211:15 pm -
1 stop7h 22m
Deal found 8/6![Delta logo]()
$591
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 10/94:14 pm -
1 stop9h 45m
Tue 10/1310:10 pm -
1 stop7h 16m
Deal found 8/4![American Airlines logo]()
$624
This United Airlines deal was found by Cheapflights users on 8/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:00 am -
2 stops19h 49m
Sat 10/36:00 am -
2 stops13h 59m
Deal found 8/6![United Airlines logo]()
$652
This Delta deal was found by Cheapflights users on 8/5. 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.
Thu 8/132:29 pm -
1 stop7h 01m
Thu 8/2012:00 pm -
1 stop8h 57m
Deal found 8/5![Delta logo]()
$665
Best flights from Wilmington to OntarioDiscover carefully curated flight deals from Wilmington to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
Discover carefully curated flight deals from Wilmington to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:44 pm -
1 stop8h 51m
Tue 9/86:00 am -
2 stops14h 57m
Deal found 8/7![United Airlines logo]()
$538
This Delta deal was found by Cheapflights users on 8/7. 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.
Sat 9/126:30 am -
1 stop7h 35m
Sat 9/1912:17 pm -
1 stop6h 35m
Deal found 8/7![Delta logo]()
$548
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 10/94:14 pm -
1 stop9h 45m
Sat 10/104:29 pm -
2 stops12h 57m
Deal found 8/4![American Airlines logo]()
$652
This United Airlines deal was found by Cheapflights users on 8/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:00 am -
2 stops15h 47m
Sat 11/144:17 pm -
2 stops16h 05m
Deal found 8/8![United Airlines logo]()
$570
This Delta deal was found by Cheapflights users on 8/6. 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.
Fri 10/95:49 pm -
1 stop7h 05m
Mon 10/1211:15 pm -
1 stop7h 22m
Deal found 8/6![Delta logo]()
$571
This Delta deal was found by Cheapflights users on 8/6. 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.
Thu 10/86:20 am -
1 stop18h 34m
Mon 10/1211:15 pm -
1 stop7h 22m
Deal found 8/6![Delta logo]()
$591
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:00 am -
2 stops19h 49m
Sat 10/36:00 am -
2 stops13h 59m
Deal found 8/7![United Airlines logo]()
$652
This Delta deal was found by Cheapflights users on 8/8. 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.
Sat 10/106:20 am -
1 stop7h 46m
Sun 10/1811:15 pm -
1 stop7h 22m
Deal found 8/8![Delta logo]()
$651
Last-minute flights from Wilmington to OntarioDiscover last-minute flight deals from Wilmington to Ontario. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from Wilmington to Ontario. Data last updated August 9, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/5. 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.
Thu 8/132:29 pm -
1 stop7h 01m
Thu 8/2012:00 pm -
1 stop8h 57m
Deal found 8/5![Delta logo]()
$665
This American Airlines deal was found by Cheapflights users on 8/5. 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.
Thu 8/138:35 am -
2 stops12h 40m
Thu 8/2012:33 pm -
1 stop7h 32m
Deal found 8/5![American Airlines logo]()
$736
This American Airlines deal was found by Cheapflights users on 8/7. 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.
Fri 9/44:53 pm -
1 stop9h 06m
Tue 9/812:33 pm -
1 stop8h 11m
Deal found 8/7![American Airlines logo]()
$518
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:44 pm -
1 stop8h 51m
Tue 9/86:00 am -
2 stops14h 57m
Deal found 8/7![United Airlines logo]()
$538
This Delta deal was found by Cheapflights users on 8/7. 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.
Sat 9/126:30 am -
1 stop7h 35m
Sat 9/1912:17 pm -
1 stop6h 35m
Deal found 8/7![Delta logo]()
$548
This Delta deal was found by Cheapflights users on 8/6. 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.
Sun 9/205:50 pm -
1 stop7h 34m
Tue 9/2212:17 pm -
2 stops19h 22m
Deal found 8/6![Delta logo]()
$675
This United Airlines deal was found by Cheapflights users on 8/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:00 am -
2 stops19h 49m
Sat 10/36:00 am -
2 stops13h 59m
Deal found 8/6![United Airlines logo]()
$652
One-way flights from Wilmington to OntarioSearch for one-way flight options from Wilmington to Ontario. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
Search for one-way flight options from Wilmington to Ontario. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:44 pm -
1 stop8h 51m
Deal found 8/4![United Airlines logo]()
$430
This Delta deal was found by Cheapflights users on 8/4. 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.
Fri 10/95:49 pm -
1 stop7h 05m
Deal found 8/4![Delta logo]()
$433
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/281:06 pm -
2 stops12h 53m
Deal found 8/4![United Airlines logo]()
$435
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 10/95:05 am -
2 stops10h 09m
Deal found 8/4![American Airlines logo]()
$438
This United Airlines deal was found by Cheapflights users on 8/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/194:44 pm -
1 stop8h 51m
Deal found 8/5![United Airlines logo]()
$466
This American Airlines deal was found by Cheapflights users on 8/5. 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.
Wed 8/193:26 pm -
2 stops10h 33m
Deal found 8/5![American Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 8/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:44 pm -
1 stop8h 51m
Deal found 8/5![United Airlines logo]()
$493
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Sat 8/158:35 am -
2 stops12h 40m
Deal found 8/8![American Airlines logo]()
$499
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Fri 8/144:53 pm -
1 stop9h 06m
Deal found 8/8![American Airlines logo]()
$520
This Alaska Airlines deal was found by Cheapflights users on 8/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:11 pm -
2 stops14h 13m
Deal found 8/4![Alaska Airlines logo]()
$588
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 August 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $499 (United Airlines) |
One-way from | $430 (United Airlines) |
Popular in | July |
Cheapest in | October |
Average price | $434 |
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 August 9, 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
Cheapest round-trip
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Fri 9/4
4:44 pm-10:35 pm
1 stop8h 51m
Ontario
Tue 9/8
6:00 am-11:57 pm
2 stops14h 57m
$538
Quickest round-trip
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Sat 9/12
6:30 am-11:05 am
1 stop7h 35m
Ontario
Sat 9/19
12:17 pm-9:52 pm
1 stop6h 35m
$548
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Wed 11/11
6:00 am-6:47 pm
2 stops15h 47m
Ontario
Sat 11/14
4:17 pm-11:22 am
2 stops16h 05m
$570
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Fri 10/9
5:49 pm-9:54 pm
1 stop7h 05m
Ontario
Mon 10/12
11:15 pm-9:37 am
1 stop7h 22m
$571
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Thu 10/8
6:20 am-9:54 pm
1 stop18h 34m
Ontario
Mon 10/12
11:15 pm-9:37 am
1 stop7h 22m
$591
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Sat 10/10
6:20 am-11:06 am
1 stop7h 46m
Ontario
Sun 10/18
11:15 pm-9:37 am
1 stop7h 22m
$651
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Fri 10/9
4:14 pm-10:59 pm
1 stop9h 45m
Ontario
Sat 10/10
4:29 pm-8:26 am
2 stops12h 57m
$652
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Tue 9/29
6:00 am-10:49 pm
2 stops19h 49m
Ontario
Sat 10/3
6:00 am-10:59 pm
2 stops13h 59m
$652
Cheapest one-way
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Fri 8/28
4:44 pm-10:35 pm
1 stop8h 51m
$430
WilmingtonOntario
ILM Wilmington New Hanover County - ONT Ontario
ILMONT
Wilmington New Hanover County
Thu 8/27
4:44 pm-10:35 pm
1 stop8h 51m
$430
Showing 1-10 of 19 resultsSorted by cheapest first
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
ILM-ONT
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.
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 August 9, 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.
Comfort
7.2
Crew
7.9
Boarding
7.5
Food
6.4
Overall
7.1
Entertainment
6.8
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Comfort
7.2
Crew
7.9
Boarding
7.5
Food
6.4
Overall
7.1
Entertainment
6.8
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
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.
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Wilmington to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 9, 2026.
Wilmington and Ontario flights
Browse other Wilmington and Ontario flight options. Last updated on August 9, 2026.
Other flights from Wilmington
Browse through other flights departing from Wilmington. Flights are based on user searches made on Cheapflights and were last updated on August 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 August 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$368 | Average$520 | FlexibilityNo cancel fee | On-time71% |