Book flights from Boston to Australia with Cathay Pacific from USD2,457

1 Passenger(s), Economy

PROMOTION CODE (OPTIONAL)

ORIGIN

DESTINATION

DEPART ON

RETURN ON

Popular flights from Boston to Australia

LEAVING FROM

GOING TO

Budget

USD

CABIN CLASS

Boston (BOS)to
Sydney (SYD)
09/12/2026 - 11/01/2027
From
USD2,909
Seen 1 day ago
Round-trip
Economy
Boston (BOS)to
Brisbane (BNE)
09/10/2026 - 21/10/2026
From
USD2,457
Seen 3 hours ago
Round-trip
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.)

Book flights from Boston to Australia

LEAVING FROM

GOING TO

Budget

USD

CABIN CLASS

Boston (BOS)to

Sydney (SYD)

09/12/2026 - 11/01/2027

Round-trip

Economy

From

USD2,909

Seen 1 day ago

Boston (BOS)to

Sydney (SYD)

18/12/2026 - 09/01/2027

Round-trip

Economy

From

USD3,422

Seen 1 day ago

Boston (BOS)to

Brisbane (BNE)

09/10/2026 - 21/10/2026

Round-trip

Economy

From

USD2,457

Seen 3 hours ago

Boston (BOS)to

Brisbane (BNE)

27/11/2026 - 10/12/2026

Round-trip

Economy

From

USD2,666

Seen 1 day ago

Lowest fares on round-trip flights found by other customers on Cathay Pacific’s official website in the last 48 hours. All fares are subject to change at any time. Other Cathay Pacific Terms & Conditions apply.