Book a trip from Boston to Sydney with Cathay Pacific , fares from USD1,499
Deals on Boston (BOS) to Sydney (SYD) flights
expand_more
location_on
location_on
Try alternate month or interact with individual days below in order to find offers.
Book flights to Sydney SYD
flight_takeoff
flight_land
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| FromBoston (BOS) | ToSydney (SYD) | Round-trip / Economy | 21/03/2025 - 20/04/2025 | From USD2,063* Seen 3 hours ago | From Boston To Sydney Fare Type Round-trip Economy Dates 21/03/2025 - 20/04/2025 From USD2,063 Seen 3 hours ago |
| FromBoston (BOS) | ToSydney (SYD) | Round-trip / Economy | 21/04/2025 - 19/05/2025 | From USD1,499* Seen 15 hours ago | From Boston To Sydney Fare Type Round-trip Economy Dates 21/04/2025 - 19/05/2025 From USD1,499 Seen 15 hours ago |
| FromBoston (BOS) | ToSydney (SYD) | Round-trip / Economy | 29/06/2025 - 27/07/2025 | From USD2,801* Seen 14 hours ago | From Boston To Sydney Fare Type Round-trip Economy Dates 29/06/2025 - 27/07/2025 From USD2,801 Seen 14 hours ago |
| FromBoston (BOS) | ToSydney (SYD) | Round-trip / Economy | 07/05/2025 - 01/06/2025 | From USD1,499* Seen 1 day ago | From Boston To Sydney Fare Type Round-trip Economy Dates 07/05/2025 - 01/06/2025 From USD1,499 Seen 1 day ago |
Book Business Class flights to Sydney - selected offers
flight_takeoff
flight_land
The Cathay Pacific experience
-
Spacious cabins and world-class service
-
Complete flexibility when you book
-
Fresher flavours, now ready for Business
-
Our intuitive digital experience
All fares displayed include taxes and carrier-imposed surcharges. All fares, government taxes and fees, and surcharges are subject to change at any time. For ticket cancellations, where applicable, the Hong Kong Passenger Security Charge, the Hong Kong Air Passenger Departure Tax, and the Hong Kong International Airport Construction Fee will be refunded without any administration fees.
Flight Deals for Popular Routes on Cathay Pacific
flight_takeoff
flight_land
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| FromBoston (BOS) | ToSydney (SYD) | Round-trip / Economy | 17/12/2025 - 06/01/2026 | From USD3,246* Seen 1 day ago | From Boston To Sydney Fare Type Round-trip Economy Dates 17/12/2025 - 06/01/2026 From USD3,246 Seen 1 day ago |
*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking.
Travel to Sydney in Premium Economy
Boston (BOS)to
Sydney (SYD)04/04/2025 - 11/04/2025FromUSD4,047*Seen 1 day agoRound-trip/Premium Economy
Best fares on flights found by others in the last 48 hours. (Please note that some fares may only apply when there are multiple travellers.)
Explore More Flights from Other Popular Origins
- Flights from Hong Kong
- Flights from Taipei
- Flights from Manchester
- Flights from Delhi
- Flights from Seoul
- Flights from Kathmandu
- Flights from Bangkok
- Flights from Mumbai
- Flights from Manila
- Flights from Paris
- Flights from Amsterdam
- Flights from Kaohsiung
- Flights from Frankfurt
- Flights from Vancouver
- Flights from Dhaka