$691+ Cheap flights from Ontario (ONT) to Adelaide (ADL)
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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ADL
Dec 10 — Dec 171
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Adelaide 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 Ontario to Adelaide
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to AdelaideExplore the most affordable flight options available from Ontario to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 10, 2026.
Explore the most affordable flight options available from Ontario to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 10, 2026.
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/106:40 pm -
2 stops25h 00m
Wed 12/302:55 pm -
1 stop26h 28m
Deal found 11/9![United Airlines logo]()
$1,404
This United Airlines deal was found by Cheapflights users on 11/6. 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 12/14:17 pm -
2 stops27h 23m
Tue 12/88:40 am -
2 stops25h 25m
Deal found 11/6![United Airlines logo]()
$1,504
This United Airlines deal was found by Cheapflights users on 11/8. 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 12/26:40 pm -
2 stops23h 50m
Sun 12/278:40 am -
2 stops25h 09m
Deal found 11/8![United Airlines logo]()
$1,704
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Sat 12/264:00 pm -
1 stop23h 00m
Sun 1/106:10 am -
2 stops22h 17m
Deal found 11/6![United Airlines logo]()
$1,924
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/76:40 pm -
2 stops27h 10m
Thu 1/77:15 am -
2 stops26h 33m
Deal found 11/9![United Airlines logo]()
$2,249
This FlightHub deal was found by Cheapflights users on 11/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/61:02 pm -
2 stops56h 23m
Sun 12/1310:00 pm -
2 stops43h 29m
Deal found 11/5![Qatar Airways logo]()
$11,025
Best flights from Ontario to AdelaideDiscover carefully curated flight deals from Ontario to Adelaide that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 10, 2026.
Discover carefully curated flight deals from Ontario to Adelaide that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 10, 2026.
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Mon 1/253:59 pm -
1 stop23h 01m
Mon 2/227:15 am -
2 stops26h 36m
Deal found 11/5![United Airlines logo]()
$1,340
This FlightHub deal was found by Cheapflights users on 11/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:00 am -
2 stops40h 35m
Fri 2/510:00 pm -
2 stops43h 13m
Deal found 11/5![Qatar Airways logo]()
$1,606
This Qatar Airways deal was found by Cheapflights users on 11/9. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:00 am -
2 stops40h 35m
Fri 2/510:00 pm -
2 stops43h 13m
Deal found 11/9![Multiple Airlines logo]()
$1,692
This United Airlines deal was found by Cheapflights users on 11/5. 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 2/32:00 pm -
2 stops31h 50m
Sun 2/77:55 pm -
2 stops32h 32m
Deal found 11/5![United Airlines logo]()
$1,365
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Wed 3/104:03 pm -
2 stops26h 27m
Mon 4/126:00 am -
2 stops22h 50m
Deal found 11/6![United Airlines logo]()
$1,368
This United Airlines deal was found by Cheapflights users on 11/6. 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 12/14:17 pm -
2 stops27h 23m
Tue 12/88:40 am -
2 stops25h 25m
Deal found 11/6![United Airlines logo]()
$1,504
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Sat 1/161:40 pm -
2 stops28h 50m
Mon 1/252:55 pm -
1 stop18h 53m
Deal found 11/6![United Airlines logo]()
$1,554
This United Airlines deal was found by Cheapflights users on 11/8. 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 12/26:40 pm -
2 stops23h 50m
Sun 12/278:40 am -
2 stops25h 09m
Deal found 11/8![United Airlines logo]()
$1,704
This United Airlines deal was found by Cheapflights users on 11/8. 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.
Mon 1/186:37 pm -
1 stop20h 23m
Mon 2/228:40 am -
2 stops25h 11m
Deal found 11/8![United Airlines logo]()
$1,727
Last-minute flights from Ontario to AdelaideDiscover last-minute flight deals from Ontario to Adelaide. Data last updated November 10, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Adelaide. Data last updated November 10, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 11/6. 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 12/14:17 pm -
2 stops27h 23m
Tue 12/88:40 am -
2 stops25h 25m
Deal found 11/6![United Airlines logo]()
$1,504
This United Airlines deal was found by Cheapflights users on 11/8. 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 12/26:40 pm -
2 stops23h 50m
Sun 12/278:40 am -
2 stops25h 09m
Deal found 11/8![United Airlines logo]()
$1,704
This FlightHub deal was found by Cheapflights users on 11/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/61:02 pm -
2 stops56h 23m
Sun 12/1310:00 pm -
2 stops43h 29m
Deal found 11/5![Qatar Airways logo]()
$11,025
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/76:40 pm -
2 stops27h 10m
Thu 1/77:15 am -
2 stops26h 33m
Deal found 11/9![United Airlines logo]()
$2,249
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/106:40 pm -
2 stops25h 00m
Wed 12/302:55 pm -
1 stop26h 28m
Deal found 11/9![United Airlines logo]()
$1,404
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Sat 12/264:00 pm -
1 stop23h 00m
Sun 1/106:10 am -
2 stops22h 17m
Deal found 11/6![United Airlines logo]()
$1,924
One-way flights from Ontario to AdelaideSearch for one-way flight options from Ontario to Adelaide. Find affordable one-way fares based on user searches. Data last updated November 10, 2026.
Search for one-way flight options from Ontario to Adelaide. Find affordable one-way fares based on user searches. Data last updated November 10, 2026.
This United deal was found by Cheapflights users on 11/9. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/24:03 pm -
2 stops27h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$691
This United Airlines deal was found by Cheapflights users on 11/9. 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 5/21:33 pm -
2 stops29h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![United Airlines logo]()
$692
This United Airlines deal was found by Cheapflights users on 11/9. 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 5/44:03 pm -
2 stops26h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![United Airlines logo]()
$695
This United Airlines deal was found by Cheapflights users on 11/9. 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 4/306:53 pm -
2 stops23h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![United Airlines logo]()
$752
This United Airlines deal was found by Cheapflights users on 11/9. 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 5/16:53 pm -
2 stops23h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![United Airlines logo]()
$755
This United Airlines deal was found by Cheapflights users on 11/9. 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 5/76:53 pm -
2 stops23h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![United Airlines logo]()
$985
This AranGrant deal was found by Cheapflights users on 11/9. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:09 pm -
2 stops29h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Qantas Airways logo]()
$1,844
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Sun 12/64:17 pm -
2 stops24h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![United Airlines logo]()
$8,780
Find flight deals from Ontario to Adelaide
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Adelaide (ADL). 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 November 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,340 (United Airlines) |
One-way from | $691 (United) |
Popular in | December |
Cheapest in | January |
Average price | $1,098 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Adelaide 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 7,457,451 searches. Data last updated November 10, 2026.
Use the filters below to find and compare flights from Ontario to Adelaide that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Wed 5/5
4:03 pm-11:05 am
2 stops26h 32m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$695
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Tue 5/4
4:03 pm-11:05 am
2 stops26h 32m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$695
Quickest round-trip
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Sat 5/1
6:53 pm-11:05 am
2 stops23h 42m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$755
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Thu 5/6
11:20 am-11:05 am
2 stops31h 15m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$755
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Fri 5/7
6:53 pm-11:10 am
2 stops23h 47m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$985
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Mon 1/25
3:59 pm-9:30 am
1 stop23h 01m
Adelaide
Mon 2/22
7:15 am-3:21 pm
2 stops26h 36m
$1,340
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Wed 2/3
2:00 pm-4:20 pm
2 stops31h 50m
Adelaide
Sun 2/7
7:55 pm-9:57 am
2 stops32h 32m
$1,365
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Wed 3/10
4:03 pm-1:00 pm
2 stops26h 27m
Adelaide
Mon 4/12
6:00 am-12:20 pm
2 stops22h 50m
$1,368
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Tue 12/1
4:17 pm-2:10 pm
2 stops27h 23m
Adelaide
Tue 12/8
8:40 am-3:35 pm
2 stops25h 25m
$1,504
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Sat 1/16
1:40 pm-1:00 pm
2 stops28h 50m
Adelaide
Mon 1/25
2:55 pm-3:18 pm
1 stop18h 53m
$1,554
Showing 1-10 of 16 resultsSorted by cheapest first
Compare providers for flights from Ontario to Adelaide
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 Ontario to Adelaide in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Adelaide flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Adelaide flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Adelaide flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Adelaide 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 Ontario-Adelaide 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 Ontario to Adelaide
Have a flexible travel schedule? Discover the best time to fly to Adelaide from Ontario with our price prediction graph.
ONT-ADL
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.
Related info for your journey
Find useful and relevant information for your journey from Ontario to Adelaide. 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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