Which airlines fly to Ontario?

There may be other airlines that fly to Ontario from Australia, but the most popular among our users are Qantas Airways, Fiji Airways, United Airlines and Air New Zealand. These airlines should offer flights to Ontario on a routine basis if you’re flying from one of the more popular airports in Australia.

United Airlines Flights to Ontario

United Airlines will jet to Ontario around 16 times in an average week. Where you fly from will dictate what kind of deals you can get for United Airlines, but prices as low as $1,061 have been found from Brisbane to Ontario. United Airlines has scored 7.4/10 in momondo user reviews.

How long does it take to fly to Ontario?

Flight times from Australia to Ontario vary, but if you’re flying out of Sydney Kingsford Smith and flying into Los Angeles (one of the most popular routes), then the duration is 13h 40m on average. Another popular route from Australia to Ontario is flying from Melbourne to Los Angeles, which will take roughly 14h 20m. Keep in mind that layovers or delays could extend your travel time.

$748 Cheap Flights to Ontario in 2025/26

1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Australia to Ontario

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

13:00 - 21:58MEL-ONT

51h 58m2 stops

06:00 - 10:00ONT-MEL

57h 00m2 stops

$1,326United Airlines

Find Deal

Mon, 12 Jan - Wed, 21 Jan

13:00 - 17:43MEL-ONT

23h 43m1 stop

13:24 - 10:00ONT-MEL

25h 36m2 stops

$1,332United Airlines

Find Deal

Mon, 12 Jan - Wed, 11 Feb

13:00 - 12:38MEL-ONT

42h 38m2 stops

13:40 - 10:00ONT-MEL

25h 20m2 stops

$1,335United Airlines

Find Deal

Fri, 19 Dec - Thu, 1 Jan

21:40 - 20:23SYD-ONT

17h 43m1 stop

08:00 - 19:45ONT-SYD

40h 45m1 stop

$1,355Hawaiian Airlines

Find Deal

Thu, 4 Dec - Wed, 31 Dec

21:40 - 20:23SYD-ONT

17h 43m1 stop

08:00 - 19:45ONT-SYD

40h 45m1 stop

$1,364Hawaiian Airlines

Find Deal

Sun, 7 Dec - Thu, 25 Dec

21:40 - 22:28SYD-ONT

19h 48m1 stop

08:13 - 19:45ONT-SYD

40h 32m1 stop

$1,399Alaska Airlines

Find Deal

Tue, 20 Jan - Tue, 27 Jan

11:05 - 23:52BNE-ONT

30h 47m2 stops

06:00 - 07:20ONT-BNE

32h 20m2 stops

$1,421Delta

Find Deal

Wed, 18 Feb - Mon, 9 Mar

06:40 - 17:14BNE-ONT

52h 34m2 stops

10:12 - 22:25ONT-BNE

42h 13m2 stops

$1,688Multiple Airlines

Find Deal

Sun, 16 Nov - Thu, 20 Nov

21:40 - 12:46SYD-ONT

34h 06m2 stops

08:00 - 19:45ONT-SYD

40h 45m1 stop

$1,719Alaska Airlines

Find Deal

Sun, 7 Dec - Thu, 25 Dec

21:40 - 20:31SYD-ONT

17h 51m1 stop

06:00 - 20:15ONT-SYD

43h 15m2 stops

$1,929Multiple Airlines

Find Deal

Tue, 25 Nov - Tue, 2 Dec

Fly from

Route

Depart

Return

Price

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Mon 12/1

13:00-21:58

2 stops51h 58m

Ontario

Wed 21/1

06:00-10:00

2 stops57h 00m

$1,326

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Mon 12/1

13:00-17:43

1 stop23h 43m

Ontario

Wed 11/2

13:24-10:00

2 stops25h 36m

$1,332

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 19/12

13:00-12:38

2 stops42h 38m

Ontario

Thu 1/1

13:40-10:00

2 stops25h 20m

$1,335

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 4/12

21:40-20:23

1 stop17h 43m

Ontario

Wed 31/12

08:00-19:45

1 stop40h 45m

$1,355

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 7/12

21:40-20:23

1 stop17h 43m

Ontario

Thu 25/12

08:00-19:45

1 stop40h 45m

$1,364

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 20/1

21:40-22:28

1 stop19h 48m

Ontario

Tue 27/1

08:13-19:45

1 stop40h 32m

$1,399

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Wed 18/2

11:05-23:52

2 stops30h 47m

Ontario

Mon 9/3

06:00-07:20

2 stops32h 20m

$1,421

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Sun 16/11

06:40-17:14

2 stops52h 34m

Ontario

Thu 20/11

10:12-22:25

2 stops42h 13m

$1,688

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 7/12

21:40-12:46

2 stops34h 06m

Ontario

Thu 25/12

08:00-19:45

1 stop40h 45m

$1,719

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 25/11

21:40-20:31

1 stop17h 51m

Ontario

Tue 2/12

06:00-20:15

2 stops43h 15m

$1,929

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Ontario flights insights and trends

Explore insights for your Ontario flight to craft the best travel plan

Prices

Other information

What is the cheapest day to depart on your flight to Ontario?

According to our data, Monday is the cheapest day to fly to Ontario from Australia. The lowest ticket price found for a Monday departure recently was $1,405. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Wednesday is the most expensive day to depart from Australia because it is more convenient for both business and leisure travellers. As a result, prices tend to be around $1,846.

What is the cheapest time of day to depart on your flight to Ontario?

Flying to Ontario from Australia in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,644 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around $1,672. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheapest flights to Ontario

Find the cheapest flights to Ontario from your nearest city or airport

Find flights from Sydney to Los Angeles

CHEAPEST MONTH TO FLY TO ONTARIO FROM SYDNEY	September	5% cheaper	Flying from Sydney to Ontario costs on average just $1,191 in September
MOST EXPENSIVE MONTH TO FLY TO ONTARIO FROM SYDNEY	June	47% more expensive	It costs about $1,827 for flights to Ontario from Sydney in June
MOST POPULAR MONTH TO FLY TO ONTARIO FROM SYDNEY	June	800% more users visited	More momondo users searched in flights to Ontario from Sydney in June than any other month

Cheap Ontario flight deals and tips

Summary info about Ontario flight prices, duration and airlines

Best One-Way Price	$748
Best Round-Trip Price	$1,326
Fastest flight time	17h 15m

The best one-way flight price to Ontario from Australia in the last 72 hours is $748 (Sydney Kingsford Smith to Ontario).

Search Deals

The best round-trip flight price to Ontario from Australia in the last 72 hours is $1,326 (Melbourne to Ontario).

Search Deals

The fastest flight to Ontario from Australia takes 17h 15m (Sydney Kingsford Smith to Ontario).

Search Deals

Frequently asked questions about flying to Ontario

What is the cheapest month to fly to Ontario?

The month of August is another great option to travel to Ontario, with average flight prices from Australia averaging around $1,253.

Is there an alternative airport near Ontario?

Finding an alternative and possibly cheaper destination airport near Ontario is possible. If you are planning a flight to Ontario, consider booking flights to Ontario Airport (5 km from Ontario city centre), San Bernardino Int Airport (38 km from Ontario city centre), Santa Ana J. Wayne/Orange Cnty Airport (47 km from Ontario city centre), Long Beach Municipal Airport (54 km from Ontario city centre) or Burbank Bob Hope Airport (67 km from Ontario city centre).

Is there a cheaper alternative to flying into Ontario?

Ontario Airport has an average price of $148 per person and is typically the cheapest airport to fly into when visiting Ontario. This average price does vary based on departure city. Try momondo’s Airport-to-Airport Pricing Tool to find the cheapest flight.

What is the absolute cheapest flight to Ontario?

The best deal found on momondo in the last two weeks was a flight to Ontario from Las Vegas for $109. This is 59% cheaper than most flight deals to Ontario. To find the cheapest price to Ontario from your area, use momondo’s Airport-to-Airport Pricing Tool.

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

Prices for flights to Ontario Airport are updated daily.

How many operators does momondo search for flights to Ontario Airport?

The number of operators available for flights to Ontario Airport is 1 as of October 2025.

How old do you have to be to fly 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 to Ontario Airport.

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

The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight to Ontario. momondo saves you time and could save you money on your trip.

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

All flight searches to Ontario on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights to Ontario?

Once all potential Ontario flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.

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

Yes momondo offers price alerts on flights to Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.