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Cheap flights Ontario — Sydney

Ontario (ONT, US) Sydney (SYD, AU)
from $653 12 122 km ~14h 46m 1 flights found 1 airlines cheapest on Thursday
Reverse route
How many travellers?
Adults
12+ years
1
Children
2–11 years
0
Infants
under 2
0
Choose your departure date
Cheapest: $653 on 31.12.2026
Prices shown are from searches by other travellers over the last 24 hours. Missing a date? Click any day — we'll find tickets anyway.
November 2026
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December 2026
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January 2027
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Prices found for 1 of 90 days. Prices update as more travellers search. Click any date to search live.
Depart
—
Return
—
Cheapest flights found
31 Dec 2026, Thu
United Airlines UA 5577
03:00
ONT Ontario International Airport
20:05
SYD Sydney (Kingsford Smith) Airport
17h 5m 1 stop
Trip.com
$653
View this ticket
Route characteristics
Distance
12 122 km
Flight time
14h 46m
Time difference
+18h
Minimum price
from $653 (31.12.2026)
Average price
$653
Maximum price
$653
Cheapest day
Thursday
Departure airports (1)
ONT Ontario International Airport
Arrival airports (1)
SYD Sydney (Kingsford Smith) Airport
Airlines (1)
UA United Airlines
Agencies (1)
Trip.com
Airlines — cheapest prices 1
United Airlines
United Airlines
1 flights · 1 days
$653
Where to buy tickets 1
Trip.com
1 tickets · 1 days
from $653
Airports

From — Ontario (1)

  • ONT Ontario International Airport

To — Sydney (1)

  • SYD Sydney (Kingsford Smith) Airport
Other destinations from Ontario
Albuquerque
US
Accra
GH
Nantucket
US
Adelaide
AU
San Andres Island
CO
Malaga
ES · Hub
Auckland
NZ
Almaty
KZ
Alicante
ES
Ahmedabad
IN
Amsterdam
NL · Hub
Anchorage
US
Frequently asked questions about the route Ontario — Sydney
How long is the flight from Ontario to Sydney?
Approximate flight time — 14h 46m. This is an average for a direct flight. With connections, the time may be longer.
What is the distance from Ontario to Sydney?
The straight-line distance — 12 122 km.
How much do flights from Ontario to Sydney cost?
The minimum price over 3 months — from $653 on 31.12.2026.
What is the average ticket price?
The average price — $653. Range: $653 — $653.
What is the time difference between Ontario and Sydney?
The difference — +18h.
From which airports does Ontario operate flights?
From Ontario: ONT (Ontario International Airport).
To which airports in Sydney do flights arrive?
To Sydney: SYD (Sydney (Kingsford Smith) Airport).
Which airlines fly this route?
This route is served by 1 airline: United Airlines.
Which day of the week is cheapest?
The cheapest day of the week — Thursday.
When is the best time to buy tickets?
Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.
How do I book flights?
Click "View this ticket" on any flight card — you'll be redirected to the booking page with this specific ticket pre-selected.
About the route Ontario — Sydney

Flights Ontario — Sydney is a popular route. The straight-line distance is 12 122 km. Flight time 14h 46m. Time difference +18h.

From Ontario (ONT) flights depart from 1 airport: ONT. To Sydney (SYD) — 1 arrival airport: SYD.

1 airline operate on this route: United Airlines.

The minimum price for the next 3 months — from $653 (31.12.2026). The cheapest dates are highlighted in the calendar above.

The average ticket price — $653, ranging from $653 to $653. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Thursday.

Other destinations in Australia from Ontario
Adelaide
AU
Brisbane
AU
Cairns
AU
Darwin
AU
Melbourne
AU
Perth
AU

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