$646+ Cheap flights from Ontario (ONT) to Adelaide (ADL)
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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ADL
Sep 28 — Oct 51
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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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 August 29, 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 August 29, 2026.
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Wed 11/44:17 pm -
2 stops29h 33m
Tue 11/178:40 am -
2 stops22h 19m
Deal found 8/25![United Airlines logo]()
$1,282
This Alaska Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:00 am -
2 stops22h 05m
Sat 10/315:20 pm -
2 stops21h 39m
Deal found 8/28![Multiple Airlines logo]()
$1,295
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Sat 12/266:27 pm -
1 stop20h 33m
Sun 1/106:10 am -
2 stops24h 40m
Deal found 8/24![United Airlines logo]()
$1,299
This United Airlines deal was found by Cheapflights users on 8/24. 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 10/226:32 pm -
2 stops25h 53m
Wed 11/46:10 am -
2 stops24h 49m
Deal found 8/24![United Airlines logo]()
$1,332
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Sun 11/11:35 pm -
2 stops30h 05m
Thu 11/58:40 am -
2 stops25h 23m
Deal found 8/24![United Airlines logo]()
$1,334
This Alaska Airlines deal was found by Cheapflights users on 8/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/119:31 am -
2 stops64h 24m
Mon 9/287:10 pm -
2 stops43h 30m
Deal found 8/26![Multiple Airlines logo]()
$1,363
This Qatar Airways deal was found by Cheapflights users on 8/29. 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.
Fri 10/2311:13 am -
2 stops35h 12m
Thu 11/510:00 pm -
2 stops43h 36m
Deal found 8/29![Qatar Airways logo]()
$1,505
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 August 29, 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 August 29, 2026.
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Wed 11/44:17 pm -
2 stops29h 33m
Tue 11/178:40 am -
2 stops22h 19m
Deal found 8/25![United Airlines logo]()
$1,282
This Qatar Airways deal was found by Cheapflights users on 8/29. 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.
Fri 10/2311:13 am -
2 stops35h 12m
Thu 11/510:00 pm -
2 stops43h 36m
Deal found 8/29![Qatar Airways logo]()
$1,505
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Sat 12/266:27 pm -
2 stops24h 03m
Sun 1/106:10 am -
2 stops24h 40m
Deal found 8/24![United Airlines logo]()
$1,326
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Sun 11/11:35 pm -
2 stops30h 05m
Thu 11/58:40 am -
2 stops25h 23m
Deal found 8/24![United Airlines logo]()
$1,334
This Qatar Airways deal was found by Cheapflights users on 8/27. 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 1/257:00 am -
2 stops39h 35m
Sat 1/3010:00 pm -
2 stops43h 11m
Deal found 8/27![Qatar Airways logo]()
$1,702
This Qatar Airways deal was found by Cheapflights users on 8/27. 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.
Sat 1/2310:31 am -
2 stops36h 04m
Thu 1/2810:00 pm -
2 stops43h 11m
Deal found 8/27![Qatar Airways logo]()
$1,702
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Wed 9/304:03 pm -
2 stops26h 32m
Wed 10/286:10 am -
2 stops23h 49m
Deal found 8/26![United Airlines logo]()
$1,574
This Qatar Airways deal was found by Cheapflights users on 8/27. 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.
Tue 1/267:00 am -
2 stops39h 35m
Sat 1/3010:00 pm -
2 stops43h 11m
Deal found 8/27![Qatar Airways logo]()
$1,702
Last-minute flights from Ontario to AdelaideDiscover last-minute flight deals from Ontario to Adelaide. Data last updated August 29, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Adelaide. Data last updated August 29, 2026 and is based on user searches.
This Qatar Airways deal was found by Cheapflights users on 8/24. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:00 pm -
2 stops34h 30m
Thu 9/1010:00 pm -
2 stops41h 07m
Deal found 8/24![Qatar Airways logo]()
$1,728
This Alaska Airlines deal was found by Cheapflights users on 8/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/119:31 am -
2 stops64h 24m
Mon 9/287:10 pm -
2 stops43h 30m
Deal found 8/26![Multiple Airlines logo]()
$1,363
This Qatar Airways deal was found by Cheapflights users on 8/26. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2512:12 pm -
2 stops34h 18m
Fri 10/210:00 pm -
2 stops36h 30m
Deal found 8/26![Qatar Airways logo]()
$1,667
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Wed 9/304:03 pm -
2 stops26h 32m
Wed 10/286:10 am -
2 stops23h 49m
Deal found 8/26![United Airlines logo]()
$1,574
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 August 29, 2026.
Search for one-way flight options from Ontario to Adelaide. Find affordable one-way fares based on user searches. Data last updated August 29, 2026.
This United deal was found by Cheapflights users on 8/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/231:56 pm -
2 stops29h 24m
Deal found 8/26![Multiple Airlines logo]()
$646
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Sun 9/201:53 pm -
2 stops28h 47m
Deal found 8/26![United Airlines logo]()
$650
This United Airlines deal was found by Cheapflights users on 8/26. 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 9/221:56 pm -
2 stops28h 39m
Deal found 8/26![United Airlines logo]()
$653
This Alaska Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:00 am -
2 stops22h 05m
Deal found 8/28![Multiple Airlines logo]()
$701
This United deal was found by Cheapflights users on 8/28. 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.
Sat 10/171:52 pm -
2 stops36h 03m
Deal found 8/28![Multiple Airlines logo]()
$705
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Fri 9/251:52 pm -
2 stops28h 48m
Deal found 8/26![United Airlines logo]()
$710
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Thu 9/241:52 pm -
2 stops28h 43m
Deal found 8/26![United Airlines logo]()
$711
This United Airlines deal was found by Cheapflights users on 8/26. 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 9/264:03 pm -
2 stops26h 22m
Deal found 8/26![United Airlines logo]()
$715
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 August 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,282 (United Airlines) |
One-way from | $646 (United) |
Popular in | January |
Cheapest in | February |
Average price | $1,165 |
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 August 29, 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 11/4
4:17 pm-4:20 pm
2 stops29h 33m
Adelaide
Tue 11/17
8:40 am-12:29 pm
2 stops22h 19m
$1,282
Quickest round-trip
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Sat 12/26
6:27 pm-1:00 pm
2 stops24h 03m
Adelaide
Sun 1/10
6:10 am-12:20 pm
2 stops24h 40m
$1,326
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Sun 11/1
1:35 pm-2:10 pm
2 stops30h 05m
Adelaide
Thu 11/5
8:40 am-3:33 pm
2 stops25h 23m
$1,334
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Fri 10/23
11:13 am-3:55 pm
2 stops35h 12m
Adelaide
Thu 11/5
10:00 pm-11:06 pm
2 stops43h 36m
$1,505
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Wed 9/30
4:03 pm-11:05 am
2 stops26h 32m
Adelaide
Wed 10/28
6:10 am-12:29 pm
2 stops23h 49m
$1,574
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Mon 1/25
7:00 am-5:05 pm
2 stops39h 35m
Adelaide
Sat 1/30
10:00 pm-10:41 pm
2 stops43h 11m
$1,702
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Sat 1/23
10:31 am-5:05 pm
2 stops36h 04m
Adelaide
Thu 1/28
10:00 pm-10:41 pm
2 stops43h 11m
$1,702
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Tue 1/26
7:00 am-5:05 pm
2 stops39h 35m
Adelaide
Sat 1/30
10:00 pm-10:41 pm
2 stops43h 11m
$1,702
Cheapest one-way
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Wed 9/23
1:56 pm-11:50 am
2 stops29h 24m
$646
OntarioAdelaide
ONT Ontario - ADL Adelaide
ONTADL
Ontario
Sun 9/20
1:53 pm-11:10 am
2 stops28h 47m
$650
Showing 1-10 of 14 resultsSorted by cheapest first
- 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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