ONT - SYD

$601 Find Cheap Flights from Ontario to Sydney - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$1,117
Typical prices: $1,048-$1,690
United Airlines
Sat 2/24Sat 3/17
ONT - SYD • 1 stop
Cheapest one-way
$601
Typical prices: $493-$510
Delta
Sat 11/17
ONT - SYD • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Ontario and Sydney. You'll need to take a connecting flight to reach the destination.
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Top layover airports
Honolulu (HNL)
Cheapest • Avg $1,080 (round-trip)
San Francisco (SFO)
Shortest trip • 18h 19m (one-way)
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Cheap Flights from Ontario to Sydney (ONT-SYD)

 

Cheap flights from Ontario to Sydney with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Tue, Feb 2 - Tue, Feb 16
United Airlines Logo
2:00 pm - 6:20 amONT  Ontario-SYD Sydney Kingsford Smith
21h 20m1 stop San Francisco
United Airlines Logo
11:50 am - 9:47 amSYD  Sydney Kingsford Smith-ONT Ontario
16h 57m1 stop San Francisco
$1,117United Airlines
Wed, Feb 24 - Wed, Mar 17
United Airlines Logo
6:35 pm - 9:20 amONT  Ontario-SYD Sydney Kingsford Smith
19h 45m1 stop San Francisco
United Airlines Logo
11:50 am - 12:20 pmSYD  Sydney Kingsford Smith-ONT Ontario
18h 30m1 stop San Francisco
$1,117United Airlines
Fri, Oct 30 - Fri, Nov 6
Multiple Airlines Logo
7:00 am - 7:45 pmONT  Ontario-SYD Sydney Kingsford Smith
18h 45m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 10:43 pmSYD  Sydney Kingsford Smith-ONT Ontario
20h 03m1 stop Honolulu
$1,139Multiple Airlines
Sat, Oct 31 - Sat, Nov 7
Multiple Airlines Logo
7:00 am - 7:45 pmONT  Ontario-SYD Sydney Kingsford Smith
18h 45m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 10:43 pmSYD  Sydney Kingsford Smith-ONT Ontario
20h 03m1 stop Honolulu
$1,139Multiple Airlines
Fri, Oct 30 - Fri, Nov 13
Multiple Airlines Logo
7:00 am - 7:45 pmONT  Ontario-SYD Sydney Kingsford Smith
18h 45m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 10:43 pmSYD  Sydney Kingsford Smith-ONT Ontario
20h 03m1 stop Honolulu
$1,139Multiple Airlines
Tue, Nov 10 - Tue, Nov 17
Multiple Airlines Logo
9:55 am - 7:45 pmONT  Ontario-SYD Sydney Kingsford Smith
38h 50m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 10:43 pmSYD  Sydney Kingsford Smith-ONT Ontario
20h 03m1 stop Honolulu
$1,150Multiple Airlines
Wed, Jan 27 - Tue, Feb 2
Multiple Airlines Logo
7:00 am - 7:45 pmONT  Ontario-SYD Sydney Kingsford Smith
17h 45m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 9:18 pmSYD  Sydney Kingsford Smith-ONT Ontario
18h 38m1 stop Honolulu
$1,155Multiple Airlines
Wed, Nov 4 - Sat, Nov 14
Multiple Airlines Logo
9:55 am - 7:45 pmONT  Ontario-SYD Sydney Kingsford Smith
38h 50m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 10:43 pmSYD  Sydney Kingsford Smith-ONT Ontario
20h 03m1 stop Honolulu
$1,156Multiple Airlines
Wed, Jan 27 - Tue, Feb 2
Multiple Airlines Logo
7:00 am - 7:45 pmONT  Ontario-SYD Sydney Kingsford Smith
17h 45m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 9:18 pmSYD  Sydney Kingsford Smith-ONT Ontario
18h 38m1 stop Honolulu
$1,158Multiple Airlines
Sat, Oct 31 - Fri, Nov 20
Multiple Airlines Logo
7:00 am - 7:45 pmONT  Ontario-SYD Sydney Kingsford Smith
18h 45m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 9:23 pmSYD  Sydney Kingsford Smith-ONT Ontario
18h 43m1 stop Honolulu
$1,189Multiple Airlines

Price, demand and travel trends for Ontario to Sydney flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Ontario to Sydney?

Round-trip flights from Ontario to Sydney typically range from $1,048 to $1,690. The lowest price found in the past 5 days was $1,117, on United Airlines.

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Key details for Ontario to Sydney flights

Cheapest flight

$601
One-way flight from Ontario to Sydney

When to book flights from Ontario to Sydney

Are your dates flexible? Find out the best times to travel from Ontario to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Ontario to Sydney flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to Sydney?

    Only Economy Class is available on flights from Ontario to Sydney.

  • How long is a flight from Ontario to Sydney?

    A nonstop flight from Ontario to Sydney takes 00m, covering 7,534 miles.

  • Do I need a passport to fly from Ontario to Sydney?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Ontario to Sydney looking right now?

    One-way fares from Ontario to Sydney are currently higher than usual. Average one-way flight prices are about $614, which is 24% above the typical average for this route.

  • What car rental options are available at Sydney Kingsford Smith Airport (SYD)?

    Sydney Kingsford Smith Airport (SYD) hosts 5 major car rental companies, with daily rates starting from around $10 for economy cars. Top options include:

    • East Coast Car Rentals
    • Bargain Car Rentals
    • YESDRIVE CAR RENTAL
    • No Birds
    • EverythingFleet

  • Which airports can I use when flying from Ontario to Sydney?

    Flights from Ontario to Sydney usually depart from Ontario (ONT) and arrive at Sydney Kingsford Smith (SYD).

  • Which airports do connecting flights from Ontario to Sydney pass through?

    Connecting flights from Ontario to Sydney most commonly pass through:

    • San Francisco (SFO) - 75% of one-stop connections
    • Honolulu (HNL) - 25% of one-stop connections

  • Can I save money by using flexible dates for flights from Ontario to Sydney?

    Yes. Flexible dates can save you up to 38% on flights from Ontario to Sydney. Wednesday is the cheapest departure day at $1,048 round-trip on average, while Friday is the most expensive at $1,690, a difference of $642.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Ontario to Sydney?

    Flying via Honolulu (HNL) gives the shortest average 1-stop total travel time at 17h 35m, compared with 18h 19m via San Francisco (SFO).

  • What is the time difference between Ontario and Sydney?

    Sydney is 18 hours ahead of Ontario (Eastern Australia Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Sydney?

    Some of the most popular sights in Sydney are Sydney Opera House, Museum of Contemporary Art and Chinatown Night Market. These are among the most viewed places in Sydney on KAYAK.

Your guide to booking Ontario to Sydney flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Friday. On this route, Wednesday flights average $1,048, about $642 less than Friday fares (38% savings) based on the last 12 months.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Sydney Kingsford Smith Airport.

    • ibis budget Sydney Airport
    • Rydges Sydney Airport Hotel
    • Travelodge Hotel Sydney Airport

More options for your flight from Ontario to Sydney

Complete your trip to Sydney with a hotel stay or car rental

Car rentals in Sydney
Hotels in Sydney
Vacations in Sydney