$667+ 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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ADL
Dec 5 — Dec 121
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
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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 5, 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 5, 2026.
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/3![United Airlines logo]()
$1,418
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/94:17 pm -
2 stops29h 33m
Fri 1/156:10 am -
2 stops22h 17m
Deal found 11/1![United Airlines logo]()
$1,462
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/84:17 pm -
2 stops27h 23m
Fri 1/156:10 am -
2 stops22h 17m
Deal found 11/1![United Airlines logo]()
$1,465
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/31:35 pm -
2 stops30h 05m
Fri 11/207:15 am -
2 stops23h 44m
Deal found 11/3![United Airlines logo]()
$1,468
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/54:17 pm -
2 stops26h 13m
Sat 12/192:55 pm -
1 stop26h 28m
Deal found 11/2![United Airlines logo]()
$1,505
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/286:27 pm -
1 stop20h 33m
Mon 1/112:55 pm -
1 stop21h 10m
Deal found 10/31![United Airlines logo]()
$1,528
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/311:05 pm -
1 stop25h 55m
Mon 1/112:55 pm -
1 stop26h 05m
Deal found 10/31![United Airlines logo]()
$1,578
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/311:05 pm -
1 stop25h 55m
Tue 1/126:10 am -
2 stops24h 53m
Deal found 10/31![United Airlines logo]()
$1,588
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/34:17 pm -
2 stops29h 33m
Sat 12/192:55 pm -
1 stop18h 54m
Deal found 11/2![United Airlines logo]()
$1,675
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/281:05 pm -
1 stop25h 55m
Sat 1/92:55 pm -
1 stop21h 10m
Deal found 10/31![United Airlines logo]()
$1,788
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 5, 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 5, 2026.
This United Airlines deal was found by Cheapflights users on 11/3. 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 2/254:02 pm -
2 stops29h 48m
Tue 3/26:10 am -
2 stops22h 42m
Deal found 11/3![United Airlines logo]()
$1,362
This Qatar Airways deal was found by Cheapflights users on 11/4. 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 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 11/4![Multiple Airlines logo]()
$1,693
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Mon 4/54:03 pm -
2 stops26h 37m
Sat 4/246:05 am -
2 stops22h 45m
Deal found 11/4![United Airlines logo]()
$1,364
This United Airlines deal was found by Cheapflights users on 11/3. 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 4/194:03 pm -
2 stops26h 37m
Fri 4/236:05 am -
2 stops30h 32m
Deal found 11/3![United Airlines logo]()
$1,365
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/94:17 pm -
2 stops29h 33m
Fri 1/156:10 am -
2 stops22h 17m
Deal found 11/1![United Airlines logo]()
$1,462
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/54:17 pm -
2 stops26h 13m
Sat 12/192:55 pm -
1 stop26h 28m
Deal found 11/2![United Airlines logo]()
$1,505
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/286:27 pm -
1 stop20h 33m
Mon 1/112:55 pm -
1 stop21h 10m
Deal found 10/31![United Airlines logo]()
$1,528
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/311:05 pm -
1 stop25h 55m
Tue 1/126:10 am -
2 stops24h 53m
Deal found 10/31![United Airlines logo]()
$1,588
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/34:17 pm -
2 stops29h 33m
Sat 12/192:55 pm -
1 stop18h 54m
Deal found 11/2![United Airlines logo]()
$1,675
Last-minute flights from Ontario to AdelaideDiscover last-minute flight deals from Ontario to Adelaide. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Adelaide. Data last updated November 5, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/3![United Airlines logo]()
$1,418
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/34:17 pm -
2 stops29h 33m
Sat 12/192:55 pm -
1 stop18h 54m
Deal found 11/2![United Airlines logo]()
$1,675
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/54:17 pm -
2 stops26h 13m
Sat 12/192:55 pm -
1 stop26h 28m
Deal found 11/2![United Airlines logo]()
$1,505
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/84:17 pm -
2 stops27h 23m
Fri 1/156:10 am -
2 stops22h 17m
Deal found 11/1![United Airlines logo]()
$1,465
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/94:17 pm -
2 stops29h 33m
Fri 1/156:10 am -
2 stops22h 17m
Deal found 11/1![United Airlines logo]()
$1,462
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/286:27 pm -
1 stop20h 33m
Mon 1/112:55 pm -
1 stop21h 10m
Deal found 10/31![United Airlines logo]()
$1,528
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/281:05 pm -
1 stop25h 55m
Sat 1/92:55 pm -
1 stop21h 10m
Deal found 10/31![United Airlines logo]()
$1,788
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/311:05 pm -
1 stop25h 55m
Mon 1/112:55 pm -
1 stop26h 05m
Deal found 10/31![United Airlines logo]()
$1,578
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/311:05 pm -
1 stop25h 55m
Tue 1/126:10 am -
2 stops24h 53m
Deal found 10/31![United Airlines logo]()
$1,588
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 5, 2026.
Search for one-way flight options from Ontario to Adelaide. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This United deal was found by Cheapflights users on 11/3. 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.
Mon 11/306:37 pm -
2 stops32h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$667
This United Airlines deal was found by Cheapflights users on 10/31. 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 1/311:42 pm -
2 stops49h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![United Airlines logo]()
$680
This United deal was found by Cheapflights users on 11/2. 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.
Thu 4/226:53 pm -
2 stops32h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$771
This AranGrant deal was found by Cheapflights users on 11/3. 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 stops26h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Qantas Airways logo]()
$1,838
This United Airlines deal was found by Cheapflights users on 11/3. 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 12/161:40 pm -
2 stops49h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![United Airlines logo]()
$1,887
This United Airlines deal was found by Cheapflights users on 11/3. 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 12/175:00 am -
2 stops34h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![United Airlines logo]()
$2,042
This Booking.com deal was found by Cheapflights users on 11/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:00 am -
3 stops34h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$2,692
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 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,362 (United Airlines) |
One-way from | $667 (United) |
Popular in | October |
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 5, 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
Sun 1/31
1:42 pm-9:30 am
2 stops49h 18m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$680
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Thu 4/22
6:53 pm-7:25 pm
2 stops32h 02m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$771
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Thu 2/25
4:02 pm-4:20 pm
2 stops29h 48m
Adelaide
Tue 3/2
6:10 am-10:22 am
2 stops22h 42m
$1,362
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Mon 4/5
4:03 pm-11:10 am
2 stops26h 37m
Adelaide
Sat 4/24
6:05 am-12:20 pm
2 stops22h 45m
$1,364
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Mon 4/19
4:03 pm-11:10 am
2 stops26h 37m
Adelaide
Fri 4/23
6:05 am-8:07 pm
2 stops30h 32m
$1,365
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Wed 12/9
4:17 pm-4:20 pm
2 stops29h 33m
Adelaide
Fri 1/15
6:10 am-9:57 am
2 stops22h 17m
$1,462
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Sat 12/5
4:17 pm-1:00 pm
2 stops26h 13m
Adelaide
Sat 12/19
2:55 pm-10:53 pm
1 stop26h 28m
$1,505
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Mon 12/28
6:27 pm-9:30 am
1 stop20h 33m
Adelaide
Mon 1/11
2:55 pm-5:35 pm
1 stop21h 10m
$1,528
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Thu 12/31
1:05 pm-9:30 am
1 stop25h 55m
Adelaide
Tue 1/12
6:10 am-12:33 pm
2 stops24h 53m
$1,588
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Thu 12/3
4:17 pm-4:20 pm
2 stops29h 33m
Adelaide
Sat 12/19
2:55 pm-3:19 pm
1 stop18h 54m
$1,675
Showing 1-10 of 14 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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