Book a trip from Seattle to Perth with Cathay Pacific , fares from USD1,870

DISCOUNT CODE (OPTIONAL)

Fly Cathay Pacific from Seattle (SEA) to Perth (PER). Enjoy award-winning service, entertainment, and an enhanced menu for Premium Economy and Business Class during your flight. Book direct to secure our best fare and join as a Cathay Pacific Member to earn Status Points or Miles.

Deals on Seattle (SEA) to Perth (PER) flights

Try alternate month or interact with individual days below in order to find offers.
Mar 2026
No results available
Apr 2026
FromUSD1,870*
Seen 1 day ago
Round trip/Economy
May 2026
FromUSD2,097*
Seen 20 hours ago
Round trip/Economy
USD1.9K
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    • RangeUSD1,870-USD2,716

    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 to Perth PER

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    Book flights to Perth PER
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)Perth (PER)Round-trip
    /
    Economy    		21/05/2026 - 04/06/2026

    From

    USD2,097

    Seen 20 hours ago

    Seattle (SEA)Perth (PER)Round-trip
    /
    Economy    		20/04/2026 - 01/05/2026

    From

    USD1,870

    Seen 1 day ago

    Seattle (SEA)Perth (PER)Round-trip
    /
    Economy    		21/04/2026 - 02/05/2026

    From

    USD2,716

    Seen 1 day ago

    Seattle (SEA)Perth (PER)Round-trip
    /
    Economy    		20/07/2026 - 31/07/2026

    From

    USD2,304

    Seen 8 hours ago

    Book Business Class flights to Perth - selected offers

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    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.