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
USD
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| FromBoston (BOS) | ToSydney (SYD) | Round-trip / Economy | 21/03/2025 - 20/04/2025 | From USD2,063* Seen 4 hours ago | From Boston To Sydney Fare Type Round-trip Economy Dates 21/03/2025 - 20/04/2025 From USD2,063 Seen 4 hours ago |
| FromBoston (BOS) | ToSydney (SYD) | Round-trip / Economy | 21/04/2025 - 19/05/2025 | From USD1,499* Seen 16 hours ago | From Boston To Sydney Fare Type Round-trip Economy Dates 21/04/2025 - 19/05/2025 From USD1,499 Seen 16 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
USD
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
Flight Deals for Popular Routes on Cathay Pacific
flight_takeoff
flight_land
USD
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.)