$387+ Cheap flights from Wilmington to Ontario (ILM - ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — ONT
Aug 22 — Aug 291
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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Best
Last-minute
One-way
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 July 23, 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 July 23, 2026.
This Delta deal was found by Cheapflights users on 7/20. 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 8/136:00 am
ILM
- ONT
1 stop7h 42m
Delta
Thu 8/2010:00 pm
ONT
- ILM
1 stop8h 55m
Delta
Deal found 7/20![Delta logo]()
$387
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/287:46 am
ILM
- ONT
1 stop8h 45m
American Airlines
Sat 9/56:15 am
ONT
- ILM
2 stops13h 50m
American Airlines
Deal found 7/19![American Airlines logo]()
$424
This American Airlines deal was found by Cheapflights users on 7/22. 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 8/224:53 pm
ILM
- ONT
1 stop9h 06m
American Airlines
Mon 8/246:15 am
ONT
- ILM
2 stops13h 40m
American Airlines
Deal found 7/22![American Airlines logo]()
$425
This Delta deal was found by Cheapflights users on 7/22. 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 10/95:48 pm
ILM
- ONT
1 stop7h 13m
Delta
Sun 10/1111:15 pm
ONT
- ILM
1 stop7h 20m
Delta
Deal found 7/22![Delta logo]()
$453
This American Airlines deal was found by Cheapflights users on 7/21. 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 8/137:46 am
ILM
- ONT
1 stop6h 57m
American Airlines
Thu 8/206:15 am
ONT
- ILM
2 stops13h 40m
American Airlines
Deal found 7/21![American Airlines logo]()
$456
This United Airlines deal was found by Cheapflights users on 7/18. 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.
Sat 9/54:00 pm
ILM
- ONT
1 stop7h 53m
United Airlines
Sat 9/127:00 am
ONT
- ILM
2 stops13h 59m
United Airlines
Deal found 7/18![United Airlines logo]()
$493
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Tue 8/188:35 am
ILM
- ONT
2 stops12h 40m
American Airlines
Tue 8/256:15 am
ONT
- ILM
2 stops13h 50m
American Airlines
Deal found 7/21![American Airlines logo]()
$525
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 July 23, 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 July 23, 2026.
This Delta deal was found by Cheapflights users on 7/18. 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 8/136:00 am
ILM
- ONT
1 stop7h 42m
Delta
Thu 8/2010:00 pm
ONT
- ILM
1 stop8h 55m
Delta
Deal found 7/18![Delta logo]()
$387
This American Airlines deal was found by Cheapflights users on 7/22. 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 8/224:53 pm
ILM
- ONT
1 stop9h 06m
American Airlines
Mon 8/246:15 am
ONT
- ILM
2 stops13h 40m
American Airlines
Deal found 7/22![American Airlines logo]()
$425
This United Airlines deal was found by Cheapflights users on 7/18. 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.
Sat 9/54:00 pm
ILM
- ONT
1 stop7h 53m
United Airlines
Sat 9/127:00 am
ONT
- ILM
2 stops13h 59m
United Airlines
Deal found 7/18![United Airlines logo]()
$493
This American Airlines deal was found by Cheapflights users on 7/18. 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 8/134:53 pm
ILM
- ONT
1 stop9h 06m
American Airlines
Thu 8/206:15 am
ONT
- ILM
2 stops13h 40m
American Airlines
Deal found 7/18![American Airlines logo]()
$533
This Delta deal was found by Cheapflights users on 7/22. 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.
Wed 10/75:48 pm
ILM
- ONT
2 stops18h 07m
Delta
Sun 10/1111:15 pm
ONT
- ILM
1 stop7h 20m
Delta
Deal found 7/22![Delta logo]()
$537
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Mon 8/174:44 pm
ILM
- ONT
1 stop8h 51m
United Airlines
Sat 8/225:00 am
ONT
- ILM
1 stop7h 19m
United Airlines
Deal found 7/21![United Airlines logo]()
$592
This Delta deal was found by Cheapflights users on 7/20. 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.
Wed 11/46:30 am
ILM
- ONT
2 stops13h 42m
Delta
Thu 11/1210:59 pm
ONT
- ILM
1 stop7h 38m
Delta
Deal found 7/20![Delta logo]()
$544
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/214:44 pm
ILM
- ONT
1 stop8h 51m
United Airlines
Tue 8/257:00 am
ONT
- ILM
2 stops13h 57m
United Airlines
Deal found 7/21![United Airlines logo]()
$641
Last-minute flights from Wilmington to OntarioDiscover last-minute flight deals from Wilmington to Ontario. Data last updated July 23, 2026 and is based on user searches.
Discover last-minute flight deals from Wilmington to Ontario. Data last updated July 23, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/20. 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 8/136:00 am
ILM
- ONT
1 stop7h 42m
Delta
Thu 8/2010:00 pm
ONT
- ILM
1 stop8h 55m
Delta
Deal found 7/20![Delta logo]()
$387
This American Airlines deal was found by Cheapflights users on 7/21. 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 8/137:46 am
ILM
- ONT
1 stop6h 57m
American Airlines
Thu 8/206:15 am
ONT
- ILM
2 stops13h 40m
American Airlines
Deal found 7/21![American Airlines logo]()
$456
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Tue 8/188:35 am
ILM
- ONT
2 stops12h 40m
American Airlines
Tue 8/256:15 am
ONT
- ILM
2 stops13h 50m
American Airlines
Deal found 7/21![American Airlines logo]()
$525
This American Airlines deal was found by Cheapflights users on 7/22. 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 8/224:53 pm
ILM
- ONT
1 stop9h 06m
American Airlines
Mon 8/246:15 am
ONT
- ILM
2 stops13h 40m
American Airlines
Deal found 7/22![American Airlines logo]()
$425
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/287:46 am
ILM
- ONT
1 stop8h 45m
American Airlines
Sat 9/56:15 am
ONT
- ILM
2 stops13h 50m
American Airlines
Deal found 7/19![American Airlines logo]()
$424
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 July 23, 2026.
Search for one-way flight options from Wilmington to Ontario. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
This American Airlines deal was found by Cheapflights users on 7/22. 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 10/14:24 pm
ILM
- ONT
1 stop7h 45m
American Airlines
Deal found 7/22![American Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Mon 8/314:44 pm
ILM
- ONT
1 stop8h 51m
United Airlines
Deal found 7/19![United Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 7/18. 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 10/66:00 am
ILM
- ONT
2 stops12h 11m
United Airlines
Deal found 7/18![United Airlines logo]()
$433
This United Airlines deal was found by Cheapflights users on 7/18. 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.
Sat 9/2612:45 pm
ILM
- ONT
2 stops13h 14m
United Airlines
Deal found 7/18![United Airlines logo]()
$463
This United Airlines deal was found by Cheapflights users on 7/22. 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 10/112:45 pm
ILM
- ONT
3 stops13h 04m
United Airlines
Deal found 7/22![United Airlines logo]()
$736
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Mon 10/512:45 pm
ILM
- ONT
2 stops11h 13m
United Airlines
Deal found 7/19![United Airlines logo]()
$845
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sun 9/131:06 pm
ILM
- ONT
2 stops12h 53m
United Airlines
Deal found 7/21![United Airlines logo]()
$1,540
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 July 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $387 (Delta) |
Popular in | March |
Cheapest in | October |
Average price | $523 |
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 July 23, 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 - ONT
ILMONT
Wilmington New Hanover County
Thu 8/13
6:00 am-10:42 am
1 stop7h 42m
Ontario
Thu 8/20
10:00 pm-9:55 am
1 stop8h 55m
$387
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Sat 8/22
4:53 pm-10:59 pm
1 stop9h 06m
Ontario
Mon 8/24
6:15 am-10:55 pm
2 stops13h 40m
$425
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Sat 9/5
4:00 pm-8:53 pm
1 stop7h 53m
Ontario
Sat 9/12
7:00 am-11:59 pm
2 stops13h 59m
$493
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Thu 8/13
4:53 pm-10:59 pm
1 stop9h 06m
Ontario
Thu 8/20
6:15 am-10:55 pm
2 stops13h 40m
$533
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Wed 10/7
5:48 pm-8:55 am
2 stops18h 07m
Ontario
Sun 10/11
11:15 pm-9:35 am
1 stop7h 20m
$537
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Wed 11/4
6:30 am-5:12 pm
2 stops13h 42m
Ontario
Thu 11/12
10:59 pm-9:37 am
1 stop7h 38m
$544
Quickest round-trip
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Mon 8/17
4:44 pm-10:35 pm
1 stop8h 51m
Ontario
Sat 8/22
5:00 am-3:19 pm
1 stop7h 19m
$592
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Fri 8/21
4:44 pm-10:35 pm
1 stop8h 51m
Ontario
Tue 8/25
7:00 am-11:57 pm
2 stops13h 57m
$641
Cheapest one-way
Quickest one-way
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Thu 10/1
4:24 pm-9:09 pm
1 stop7h 45m
$393
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Sat 9/26
4:00 pm-8:58 pm
1 stop7h 58m
$428
Showing 1-10 of 15 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 July.
| 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.
Cheapflights Insights
Everything you need to know about your flight from Wilmington to Ontario
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 July 23, 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.
Boarding
7.5
Comfort
7.2
Crew
7.9
Overall
7.1
Entertainment
6.8
Food
6.4
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Boarding
7.5
Comfort
7.2
Crew
7.9
Overall
7.1
Entertainment
6.8
Food
6.4
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 July 23, 2026.
Wilmington and Ontario flights
Browse other Wilmington and Ontario flight options. Last updated on July 23, 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 July 23, 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 July 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$368 | Average$465 | FlexibilityNo cancel fee | On-time71% |