Earn point on your loyalty program!arrow arc left

Cheap flights from Billings (BIL) to Sydney (SYD)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Billings (BIL) to Sydney (SYD)

How to find the cheapest flight from Billings (BIL) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Billings (BIL) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Billings (BIL) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Billings to Sydney in December 2025 , January 2026

31 Dec - 10 Jan $ 1,628.00
BIL
Billings
United Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
United Airlines
2 STOPS
BIL
Billings
Pick dates
19 Dec - 07 Jan $ 3,467.00
BIL
Billings
Hawaiian Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Hawaiian Airlines
2 STOPS
BIL
Billings
Pick dates
17 Dec - 04 Jan $ 6,141.00
BIL
Billings
Qantas
1 STOPS
SYD
Sydney
SYD
Sydney
Qantas
1 STOPS
BIL
Billings
Pick dates

Last minute flights from Billings to Sydney

26 Dec - 01 Jan $ 2,567.00
BIL
Billings
Hawaiian Airlines
3 STOPS
SYD
Sydney
SYD
Sydney
Hawaiian Airlines
2 STOPS
BIL
Billings
Pick dates
19 Dec - 01 Jan $ 2,919.00
BIL
Billings
Alaska Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
2 STOPS
BIL
Billings
Pick dates
17 Dec - 31 Dec $ 5,266.00
BIL
Billings
Qantas
1 STOPS
SYD
Sydney
SYD
Sydney
Qantas
1 STOPS
BIL
Billings
Pick dates

One-way flights to Sydney from Billings

2:40 PM - 10:55 PM
United Airlines
2 Stops
24h 25m
BIL - SYD
$ 976
Kiwi
Pick dates
6:35 AM - 10:55 PM
United Airlines
2 Stops
32h 30m
BIL - SYD
$ 1,030
Kiwi
Pick dates
2:40 PM - 10:55 PM
United Airlines
2 Stops
24h 25m
BIL - SYD
$ 1,052
Kiwi
Pick dates

How to find the cheapest flight from Billings (BIL) to Sydney (SYD)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Billings (BIL) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Billings (BIL) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.