Book a trip from Seattle to Hanoi with Cathay Pacific , fares from USD841

PROMOTION CODE (OPTIONAL)

Fly Cathay Pacific from Seattle (SEA) to Hanoi (HAN). 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 member to earn Status Points or Miles.

When is the best time to fly from Seattle (SEA) to Hanoi (HAN)?

Aug 2026
FromUSD939*
Seen 1 day ago
Round trip/Economy
Sep 2026
FromUSD939*
Seen 1 day ago
Round trip/Economy
Oct 2026
No results available
cmp-daily-histogram-bars-legend-min-price-aria-label USD939
Displaying fares for August-2026
  • SEA–HAN, 26/08/2026 – 05/09/2026: From USD939
    26

    Wed

    AUG

  • SEA–HAN, 27/08/2026 – 05/09/2026: From USD939
    27

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  • SEA–HAN, 28/08/2026 – 05/09/2026: From USD1,030
    28

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  • SEA–HAN, 29/08/2026 – 05/09/2026: From USD1,026
    29

    Sat

  • SEA–HAN, 30/08/2026 – 05/09/2026: From USD980
    30

    Sun

  • SEA–HAN, 31/08/2026 – 05/09/2026: From USD980
    31

    Mon

  • SEA–HAN, 01/09/2026 – 05/09/2026: From USD939
    01

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    SEP

  • SEA–HAN, 02/09/2026 – 05/09/2026: From USD2,148
    02

    Wed

  • SEA–HAN, 03/09/2026 – 05/09/2026: From USD2,148
    03

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    09

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    10

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    11

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    12

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    14

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    15

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    16

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    17

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    18

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    19

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    20

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    21

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    22

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    23

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    • RangeUSD939-USD2,148

    Lowest fares on 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.

    Travel Destination Facts

    Destination airport(s)
    • Noi Bai International Airport (HAN)
    Aircraft Type

    Boeing 777, Airbus A321neo, Airbus A330 and Airbus A350 aircraft*

    Departure time zone
    GMT-07:00
    Arrival time zone
    GMT+07:00
    Cabin Class

    First class, Business class, Premium Economy, Economy^

    Lowest fare month
    February
    *Aircraft model may vary due to operational requirements. ^Cabin class availability is subject to aircraft configuration. Lowest fare month for 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.

    Explore flight fares from Seattle (SEA) to Hanoi (HAN)

    Make flexible bookings with Cathay Pacific and enjoy hassle-free travel when plans change.

    USD
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    Explore flight fares from Seattle (SEA) to Hanoi (HAN)
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)Hanoi (HAN)Round-trip
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    Economy    		27/01/2027 - 16/02/2027

    From

    USD841

    Seen 18 hours ago

    Seattle (SEA)Hanoi (HAN)Round-trip
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    Economy    		04/02/2027 - 16/02/2027

    From

    USD841

    Seen 18 hours ago

    Seattle (SEA)Hanoi (HAN)Round-trip
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    Economy    		25/01/2027 - 16/02/2027

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    USD841

    Seen 18 hours ago

    Seattle (SEA)Hanoi (HAN)Round-trip
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    Economy    		26/01/2027 - 16/02/2027

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    USD841

    Seen 18 hours ago

    Seattle (SEA)Hanoi (HAN)Round-trip
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    Economy    		29/01/2027 - 16/02/2027

    From

    USD841

    Seen 18 hours ago

    Seattle (SEA)Hanoi (HAN)Round-trip
    /
    Economy    		28/01/2027 - 16/02/2027

    From

    USD841

    Seen 18 hours ago

    Seattle (SEA)Hanoi (HAN)Round-trip
    /
    Economy    		01/02/2027 - 16/02/2027

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    USD841

    Seen 18 hours ago

    Seattle (SEA)Hanoi (HAN)Round-trip
    /
    Economy    		02/02/2027 - 16/02/2027

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    USD841

    Seen 18 hours ago

    Seattle (SEA)Hanoi (HAN)Round-trip
    /
    Economy    		03/02/2027 - 16/02/2027

    From

    USD879

    Seen 18 hours ago

    Seattle (SEA)Hanoi (HAN)Round-trip
    /
    Economy    		30/11/2026 - 31/03/2027

    From

    USD879

    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.

    Book Business Class flights to Hanoi - selected offers

    Experience refined comfort in our award-winning Business class.

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    Lowest fares on 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.

    Flights from Seattle SEA to Hanoi HAN

    From the Ancient Quarter of the city to the calming lakes and waers, Hanoi has plenty to offer as Vietnam's capital city. Bustling and thriving, the city is ideal for walking and exploring the region's vast history. Choose Cathay Pacific for your flights to Hanoi and enjoy reclining seats, high-quality cuisine, and impeccable service no matter which class you choose.

    First visit to Hanoi

    For recent history, start at Ho Chi Minh Mausoleum at Ba Dinh Square, where Ho Chi Minh first delivered his declaration of independence on behalf of his countrymen in 1945. The Ho Chi Minh Museum, located nearby, details the leader’s history in one of the city's most impressive buildings. For some peace and tranquillity, follow the walking trail around Hoan Kiem Lake. For local colour and culture, stroll along the 36 streets that make up the Ancient Quarter, the historic region with plenty of local wares to browse and cuisine to sample.

    Travel tips for Hanoi

    The compact city makes it easy to navigate most attractions by foot. Hire taxis, bicycles, or motorbikes for added convenience. Start your visit in style – book your Hanoi flights with Cathay Pacific today.