$345+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — ONT
Jul 27 — Aug 31
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 June 27, 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 June 27, 2026.
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 10/65:45 pm
ILM
- ONT
1 stop7h 29m
Delta
Wed 10/1410:59 pm
ONT
- ILM
1 stop7h 38m
Delta
Deal found 6/25![Delta logo]()
$429
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 10/67:00 am
ILM
- ONT
2 stops18h 14m
Delta
Tue 10/1310:59 pm
ONT
- ILM
1 stop7h 38m
Delta
Deal found 6/25![Delta logo]()
$436
This Delta deal was found by Cheapflights users on 6/25. 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 10/75:45 pm
ILM
- ONT
1 stop7h 29m
Delta
Tue 10/1310:59 pm
ONT
- ILM
1 stop7h 38m
Delta
Deal found 6/25![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 10/67:00 am
ILM
- ONT
2 stops18h 14m
Delta
Sat 10/1712:00 pm
ONT
- ILM
1 stop8h 04m
Delta
Deal found 6/25![Delta logo]()
$461
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 10/65:45 pm
ILM
- ONT
1 stop7h 29m
Delta
Fri 10/1610:59 pm
ONT
- ILM
2 stops14h 32m
Delta
Deal found 6/25![Delta logo]()
$462
This Delta deal was found by Cheapflights users on 6/25. 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 10/75:45 pm
ILM
- ONT
1 stop7h 29m
Delta
Sat 10/1712:00 pm
ONT
- ILM
1 stop8h 04m
Delta
Deal found 6/25![Delta logo]()
$479
This American Airlines deal was found by Cheapflights users on 6/24. 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 7/247:00 am
ILM
- ONT
1 stop7h 45m
American Airlines
Wed 8/126:00 am
ONT
- ILM
1 stop6h 44m
American Airlines
Deal found 6/24![American Airlines logo]()
$482
This United Airlines deal was found by Cheapflights users on 6/25. 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 8/284:44 pm
ILM
- ONT
1 stop8h 51m
United Airlines
Tue 9/156:00 am
ONT
- ILM
2 stops14h 57m
United Airlines
Deal found 6/25![United Airlines logo]()
$484
This Delta deal was found by Cheapflights users on 6/25. 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 10/75:45 pm
ILM
- ONT
1 stop7h 29m
Delta
Fri 10/1610:59 pm
ONT
- ILM
2 stops14h 32m
Delta
Deal found 6/25![Delta logo]()
$487
This United Airlines deal was found by Cheapflights users on 6/24. 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
ILM
- ONT
1 stop8h 51m
United Airlines
Tue 9/86:00 am
ONT
- ILM
2 stops14h 57m
United Airlines
Deal found 6/24![United Airlines logo]()
$498
This Delta deal was found by Cheapflights users on 6/25. 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.
Mon 10/55:50 pm
ILM
- ONT
1 stop7h 36m
Delta
Sat 10/1712:00 pm
ONT
- ILM
1 stop8h 04m
Delta
Deal found 6/25![Delta logo]()
$507
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 June 27, 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 June 27, 2026.
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 10/65:45 pm
ILM
- ONT
1 stop7h 29m
Delta
Wed 10/1410:59 pm
ONT
- ILM
1 stop7h 38m
Delta
Deal found 6/25![Delta logo]()
$429
This American Airlines deal was found by Cheapflights users on 6/22. 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 8/137:46 am
ILM
- ONT
1 stop6h 57m
American Airlines
Thu 8/2012:33 pm
ONT
- ILM
1 stop7h 32m
American Airlines
Deal found 6/22![American Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 6/26. 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 10/276:00 am
ILM
- ONT
2 stops15h 29m
United Airlines
Sat 10/316:00 am
ONT
- ILM
2 stops14h 40m
United Airlines
Deal found 6/26![United Airlines logo]()
$549
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 10/65:45 pm
ILM
- ONT
1 stop7h 29m
Delta
Sat 10/1712:00 pm
ONT
- ILM
1 stop8h 04m
Delta
Deal found 6/25![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 6/25. 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 10/77:00 am
ILM
- ONT
2 stops18h 14m
Delta
Tue 10/1310:59 pm
ONT
- ILM
2 stops20h 57m
Delta
Deal found 6/25![Delta logo]()
$470
This United Airlines deal was found by Cheapflights users on 6/26. 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 7/143:41 pm
ILM
- ONT
1 stop10h 10m
United Airlines
Tue 7/215:45 am
ONT
- ILM
2 stops14h 59m
United Airlines
Deal found 6/26![United Airlines logo]()
$549
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 10/65:45 pm
ILM
- ONT
1 stop7h 29m
Delta
Fri 10/1610:59 pm
ONT
- ILM
1 stop7h 38m
Delta
Deal found 6/25![Delta logo]()
$482
This Delta deal was found by Cheapflights users on 6/22. 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 8/146:00 am
ILM
- ONT
1 stop7h 42m
Delta
Tue 8/1812:00 pm
ONT
- ILM
1 stop8h 57m
Delta
Deal found 6/22![Delta logo]()
$482
This United Airlines deal was found by Cheapflights users on 6/22. 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 8/134:44 pm
ILM
- ONT
1 stop8h 51m
United Airlines
Thu 8/205:00 am
ONT
- ILM
2 stops31h 18m
United Airlines
Deal found 6/22![United Airlines logo]()
$595
This Delta deal was found by Cheapflights users on 6/25. 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 10/75:45 pm
ILM
- ONT
1 stop7h 29m
Delta
Fri 10/1610:59 pm
ONT
- ILM
1 stop7h 38m
Delta
Deal found 6/25![Delta logo]()
$507
Last-minute flights from Wilmington to OntarioDiscover last-minute flight deals from Wilmington to Ontario. Data last updated June 27, 2026 and is based on user searches.
Discover last-minute flight deals from Wilmington to Ontario. Data last updated June 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/25. 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 7/23:42 pm
ILM
- ONT
1 stop10h 09m
United Airlines
Tue 7/145:45 am
ONT
- ILM
2 stops14h 59m
United Airlines
Deal found 6/25![United Airlines logo]()
$559
This American Airlines deal was found by Cheapflights users on 6/25. 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 7/24:35 pm
ILM
- ONT
1 stop8h 57m
American Airlines
Tue 7/142:15 pm
ONT
- ILM
1 stop6h 42m
American Airlines
Deal found 6/25![American Airlines logo]()
$614
This United Airlines deal was found by Cheapflights users on 6/26. 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 7/143:41 pm
ILM
- ONT
1 stop10h 10m
United Airlines
Tue 7/215:45 am
ONT
- ILM
2 stops14h 59m
United Airlines
Deal found 6/26![United Airlines logo]()
$549
This American Airlines deal was found by Cheapflights users on 6/25. 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 7/174:15 pm
ILM
- ONT
1 stop9h 19m
American Airlines
Mon 7/2010:10 pm
ONT
- ILM
1 stop7h 09m
American Airlines
Deal found 6/25![American Airlines logo]()
$587
This American Airlines deal was found by Cheapflights users on 6/26. 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 7/217:00 am
ILM
- ONT
1 stop7h 45m
American Airlines
Sat 7/2512:35 pm
ONT
- ILM
1 stop8h 22m
American Airlines
Deal found 6/26![American Airlines logo]()
$545
This American Airlines deal was found by Cheapflights users on 6/25. 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 7/227:00 am
ILM
- ONT
1 stop7h 45m
American Airlines
Fri 7/315:34 am
ONT
- ILM
1 stop7h 20m
American Airlines
Deal found 6/25![American Airlines logo]()
$540
This American Airlines deal was found by Cheapflights users on 6/24. 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 7/247:00 am
ILM
- ONT
1 stop7h 45m
American Airlines
Wed 8/126:00 am
ONT
- ILM
1 stop6h 44m
American Airlines
Deal found 6/24![American Airlines logo]()
$482
This American Airlines deal was found by Cheapflights users on 6/24. 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 7/247:00 am
ILM
- ONT
1 stop9h 22m
American Airlines
Sat 8/16:11 am
ONT
- ILM
2 stops12h 43m
American Airlines
Deal found 6/24![American Airlines logo]()
$552
This American Airlines deal was found by Cheapflights users on 6/25. 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 7/257:00 am
ILM
- ONT
1 stop9h 23m
American Airlines
Sat 8/112:35 pm
ONT
- ILM
1 stop8h 22m
American Airlines
Deal found 6/25![American Airlines logo]()
$573
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 June 27, 2026.
Search for one-way flight options from Wilmington to Ontario. Find affordable one-way fares based on user searches. Data last updated June 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/103:39 pm
ILM
- ONT
3 stops35h 11m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$345
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Wed 8/194:44 pm
ILM
- ONT
1 stop8h 51m
United Airlines
Deal found 6/22![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 6/24. 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 7/223:47 pm
ILM
- ONT
1 stop10h 04m
United Airlines
Deal found 6/24![United Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 6/22. 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.
Wed 8/193:26 pm
ILM
- ONT
2 stops10h 33m
American Airlines
Deal found 6/22![American Airlines logo]()
$433
This United Airlines deal was found by Cheapflights users on 6/26. 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 7/43:41 pm
ILM
- ONT
1 stop10h 10m
United Airlines
Deal found 6/26![United Airlines logo]()
$461
This American Airlines deal was found by Cheapflights users on 6/26. 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 7/106:06 pm
ILM
- ONT
1 stop7h 28m
American Airlines
Deal found 6/26![American Airlines logo]()
$488
This Kiwi.com deal was found by Cheapflights users on 6/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/58:20 pm
ILM
- ONT
3 stops22h 34m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 6/25. 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 7/23:42 pm
ILM
- ONT
1 stop10h 09m
United Airlines
Deal found 6/25![United Airlines logo]()
$515
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 June 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $429 (Delta) |
One-way from | $345 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $564 |
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 June 27, 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
Tue 10/6
5:45 pm-10:14 pm
1 stop7h 29m
Ontario
Wed 10/14
10:59 pm-9:37 am
1 stop7h 38m
$429
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Tue 10/6
5:45 pm-10:14 pm
1 stop7h 29m
Ontario
Sat 10/17
12:00 pm-11:04 pm
1 stop8h 04m
$454
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Wed 10/7
7:00 am-10:14 pm
2 stops18h 14m
Ontario
Tue 10/13
10:59 pm-10:56 pm
2 stops20h 57m
$470
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Tue 10/6
5:45 pm-10:14 pm
1 stop7h 29m
Ontario
Fri 10/16
10:59 pm-9:37 am
1 stop7h 38m
$482
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Fri 8/14
6:00 am-10:42 am
1 stop7h 42m
Ontario
Tue 8/18
12:00 pm-11:57 pm
1 stop8h 57m
$482
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Wed 10/7
5:45 pm-10:14 pm
1 stop7h 29m
Ontario
Fri 10/16
10:59 pm-9:37 am
1 stop7h 38m
$507
Quickest round-trip
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Thu 8/13
7:46 am-11:43 am
1 stop6h 57m
Ontario
Thu 8/20
12:33 pm-11:05 pm
1 stop7h 32m
$535
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Tue 10/27
6:00 am-6:29 pm
2 stops15h 29m
Ontario
Sat 10/31
6:00 am-11:40 pm
2 stops14h 40m
$549
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Tue 7/14
3:41 pm-10:51 pm
1 stop10h 10m
Ontario
Tue 7/21
5:45 am-11:44 pm
2 stops14h 59m
$549
WilmingtonOntario
ILM - ONT
ILMONT
Wilmington New Hanover County
Thu 8/13
4:44 pm-10:35 pm
1 stop8h 51m
Ontario
Thu 8/20
5:00 am-3:18 pm
2 stops31h 18m
$595
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 June.
| 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 June 27, 2026.
Peruse reviews from past customers who have flown with Delta and 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.
Entertainment
7.8
Overall
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Entertainment
7.8
Overall
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Entertainment
7.8
Overall
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
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Top 2 airlines flying from Wilmington to Ontario
Discover the top 2 airlines 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 June 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$354 | Average$498 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$368 | Average$463 | FlexibilityNo cancel fee | On-time71% |