When did momondo last update prices for flights from Adelaide Airport to Ontario Airport?

Prices for flights from Adelaide Airport to Ontario Airport are updated daily.

How old do you have to be to fly from Adelaide Airport to Ontario Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Adelaide Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$970 Cheap Flights from Adelaide to Ontario in 2026/27

Find the cheapest flights from Adelaide to Los Angeles

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One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:10 - 15:27ADL Adelaide-ONT Ontario

26h 47m2 stops Brisbane San Francisco

06:00 - 11:10ONT Ontario-ADL Adelaide

36h 40m2 stops San Francisco Brisbane

$1,538United Airlines

Wed, 31 Mar - Sun, 4 Apr

06:10 - 09:47ADL Adelaide-ONT Ontario

22h 07m2 stops Brisbane San Francisco

18:53 - 12:10ONT Ontario-ADL Adelaide

23h 47m2 stops San Francisco Brisbane

$1,538United Airlines

Wed, 17 Feb - Wed, 31 Mar

06:10 - 17:47ADL Adelaide-ONT Ontario

29h 07m2 stops Brisbane San Francisco

16:03 - 11:10ONT Ontario-ADL Adelaide

26h 37m2 stops San Francisco Brisbane

$1,543United Airlines

Wed, 31 Mar - Sun, 4 Apr

06:10 - 15:27ADL Adelaide-ONT Ontario

26h 47m2 stops Brisbane San Francisco

06:00 - 11:10ONT Ontario-ADL Adelaide

36h 40m2 stops San Francisco Brisbane

$1,546United Airlines

Wed, 31 Mar - Sun, 4 Apr

08:40 - 15:33ADL Adelaide-ONT Ontario

25h 23m2 stops Melbourne San Francisco

16:17 - 14:10ONT Ontario-ADL Adelaide

27h 23m2 stops San Francisco Melbourne

$1,546United Airlines

Tue, 3 Nov - Tue, 10 Nov

06:10 - 15:27ADL Adelaide-ONT Ontario

26h 47m2 stops Brisbane San Francisco

06:00 - 11:10ONT Ontario-ADL Adelaide

36h 40m2 stops San Francisco Brisbane

$1,553United Airlines

Wed, 31 Mar - Sun, 4 Apr

07:15 - 12:19ADL Adelaide-ONT Ontario

23h 34m2 stops Melbourne San Francisco

18:35 - 16:20ONT Ontario-ADL Adelaide

27h 15m2 stops San Francisco Brisbane

$1,610United Airlines

Tue, 19 Jan - Thu, 18 Feb

08:40 - 15:33ADL Adelaide-ONT Ontario

25h 23m2 stops Melbourne San Francisco

18:37 - 16:20ONT Ontario-ADL Adelaide

27h 13m2 stops San Francisco Brisbane

$1,618United Airlines

Thu, 5 Nov - Thu, 12 Nov

06:05 - 12:20ADL Adelaide-ONT Ontario

22h 45m2 stops Melbourne San Francisco

18:53 - 11:05ONT Ontario-ADL Adelaide

23h 42m2 stops San Francisco Melbourne

$1,632United Airlines

Sun, 18 Apr - Tue, 18 May

16:30 - 18:00ADL Adelaide-ONT Ontario

42h 00m2 stops Melbourne Taipei City Taiwan Taoyuan Intl

00:10 - 17:45ONT Ontario-ADL Adelaide

49h 05m2 stops Taipei City Taiwan Taoyuan Intl Melbourne

$2,591China Airlines

Tue, 20 Apr - Tue, 18 May

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United Airlines flights from Adelaide to Ontario

Our best United Airlines deals on Adelaide to Ontario flight tickets

United Airlines

31 Mar

ADL06:10Adelaide

26h 47m

2 stops

ONT15:27Ontario

4 Apr

ONT06:00Ontario

36h 40m

2 stops

ADL11:10Adelaide

$1,538

United Airlines

31 Mar

ADL06:10Adelaide

29h 07m

2 stops

ONT17:47Ontario

4 Apr

ONT16:03Ontario

26h 37m

2 stops

ADL11:10Adelaide

$1,543

United Airlines

3 Nov

ADL08:40Adelaide

25h 23m

2 stops

ONT15:33Ontario

10 Nov

ONT16:17Ontario

27h 23m

2 stops

ADL14:10Adelaide

$1,546

China Airlines flights from Adelaide to Ontario

Our best China Airlines deals on Adelaide to Ontario flight tickets

China Airlines

20 Apr

ADL16:30Adelaide

42h 00m

2 stops

ONT18:00Ontario

18 May

ONT00:10Ontario

49h 05m

2 stops

ADL17:45Adelaide

$2,591

China Airlines

19 Apr

ADL14:00Adelaide

44h 30m

2 stops

ONT18:00Ontario

17 May

ONT00:10Ontario

47h 05m

2 stops

ADL15:45Adelaide

$2,658

China Airlines

20 Apr

ADL14:20Adelaide

44h 10m

2 stops

ONT18:00Ontario

19 May

ONT00:10Ontario

48h 15m

2 stops

ADL16:55Adelaide

$2,661

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Wed 31/3

06:10-15:27

2 stops26h 47m

Ontario

Sun 4/4

06:00-11:10

2 stops36h 40m

$1,538

Fastest return journey

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Wed 17/2

06:10-09:47

2 stops22h 07m

Ontario

Wed 31/3

18:53-12:10

2 stops23h 47m

$1,538

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Wed 31/3

06:10-17:47

2 stops29h 07m

Ontario

Sun 4/4

16:03-11:10

2 stops26h 37m

$1,543

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Wed 31/3

06:10-15:27

2 stops26h 47m

Ontario

Sun 4/4

06:00-11:10

2 stops36h 40m

$1,546

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Tue 3/11

08:40-15:33

2 stops25h 23m

Ontario

Tue 10/11

16:17-14:10

2 stops27h 23m

$1,546

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Wed 31/3

06:10-15:27

2 stops26h 47m

Ontario

Sun 4/4

06:00-11:10

2 stops36h 40m

$1,553

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Tue 19/1

07:15-12:19

2 stops23h 34m

Ontario

Thu 18/2

18:35-16:20

2 stops27h 15m

$1,610

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Thu 5/11

08:40-15:33

2 stops25h 23m

Ontario

Thu 12/11

18:37-16:20

2 stops27h 13m

$1,618

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Sun 18/4

06:05-12:20

2 stops22h 45m

Ontario

Tue 18/5

18:53-11:05

2 stops23h 42m

$1,632

AdelaideOntario

ADL Adelaide - ONT Ontario

ADLONT

Adelaide

Tue 20/4

16:30-18:00

2 stops42h 00m

Ontario

Tue 18/5

00:10-17:45

2 stops49h 05m

$2,591

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from Adelaide to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Adelaide to Ontario?

United Airlines is the most popular carrier operating from Adelaide to Ontario

Which airlines fly to Ontario?

Qantas Airways, Fiji Airways and Virgin Australia are the top three most popular airlines that fly to Ontario from Adelaide according to our data. Qantas Airways is the first choice among our users, with 52% of people opting to fly with this airline when travelling to Ontario. Keep in mind that there are 5 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from Adelaide to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Adelaide to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Adelaide to Ontario (ADL to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Adelaide to Ontario

Best price found	$970
Fastest flight time	24h 49m
Direct flights	None

The best one-way flight to Ontario from Adelaide in the past 72 hours is $970. The best return flight deal from Adelaide to Ontario found on momondo in the last 72 hours is $1,538.

The fastest flight from Adelaide to Ontario takes 24h 49m

There are no direct flights from Adelaide to Ontario. There are no popular flight routes from Adelaide to Ontario.

Search flight deals

Frequently asked questions about flying from Adelaide to Ontario

How far is Adelaide to Ontario by plane?
Ontario is 13203.4 km away from Adelaide. Flights usually cover this in 24h 49m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Adelaide Airport to Ontario Airport?
Prices for flights from Adelaide Airport to Ontario Airport are updated daily.
How old do you have to be to fly from Adelaide Airport to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Adelaide Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Adelaide to Ontario?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Adelaide to Ontario . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Adelaide to Ontario with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ontario from Adelaide which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Adelaide to Ontario?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Adelaide to Ontario.

I’m not ready to book a flight from Adelaide to Ontario right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Adelaide to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.