Book a trip from Seattle to Sydney with Cathay Pacific , fares from USD1,506

DISCOUNT CODE (OPTIONAL)

Deals on Seattle (SEA) to Sydney (SYD) flights

Try alternate month or interact with individual days below in order to find offers.
Mar 2026
No results available
Apr 2026
FromUSD1,938*
Seen 4 hours ago
Round trip/Economy
May 2026
FromUSD1,551*
Seen 5 hours ago
Round trip/Economy
USD1.9K
Displaying fares for March-2026
  • 23

    Mon

    MAR

  • 24

    Tue

  • 25

    Wed

  • 26

    Thu

  • 27

    Fri

  • 28

    Sat

  • 29

    Sun

  • 30

    Mon

  • 31

    Tue

  • 01

    Wed

    APR

  • 02

    Thu

  • 03

    Fri

  • 04

    Sat

  • 05

    Sun

  • 06

    Mon

  • 07

    Tue

  • 08

    Wed

  • 09

    Thu

  • 10

    Fri

  • 11

    Sat

  • 12

    Sun

  • 13

    Mon

  • 14

    Tue

  • 15

    Wed

  • 16

    Thu

  • 17

    Fri

  • 18

    Sat

  • 19

    Sun

  • 20

    Mon

  • 21

    Tue

  • 22

    Wed

    • RangeUSD1,938

    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 Sydney SYD

    USD
    keyboard_arrow_down
    Book flights to Sydney SYD
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)Sydney (SYD)Round-trip
    /
    Economy    		03/05/2026 - 19/05/2026

    From

    USD1,551

    Seen 5 hours ago

    Seattle (SEA)Sydney (SYD)Round-trip
    /
    Economy    		18/04/2026 - 12/05/2026

    From

    USD1,938

    Seen 4 hours ago

    Book Business Class flights to Sydney - selected offers

    USD
    keyboard_arrow_down

    Explore More Flights from Other Popular Origins