Book a trip from Boston to Sydney with Cathay Pacific - fares from
Deals on Boston (BOS) to Sydney (SYD) flights
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Try alternate month or interact with individual days below in order to find offers.
Flight Deals for Popular Routes on Cathay Pacific
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USD
From | To | Fare Type | Dates | Price | |
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FromBoston (BOS) | ToSydney (SYD) | Round-trip / Economy | 27/06/2025 - 14/07/2025 | From USD3,454* Seen 10 hours ago | From Boston To Sydney Fare Type Round-trip Economy Dates 27/06/2025 - 14/07/2025 From USD3,454 Seen 10 hours ago |
*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking.
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