$418 Cheap Cathay Pacific flights Seattle (SEA) to Hong Kong (HKG)

View $418 flight on Thu, Sep 25, 2025Opens in a new window

$418 Cheap Cathay Pacific flights Seattle (SEA) to Hong Kong (HKG)

Prices were available within the past 7 days and start at $418 for one-way flights and $807 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Thu, Sep 25 - Wed, Oct 15
SEA
Seattle
HKG
Hong Kong SAR
$807 Roundtrip, just found
$807
Roundtrip
just found
Select Cathay Pacific flight, departing Thu, Sep 25 from Seattle to Hong Kong SAR, returning Wed, Oct 15, priced at $807 just found
Flights from Seattle (SEA) to Hong Kong (HKG)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Hong Kong Intl.
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Hainan Airlines, Japan Airlines, KLM, Korean Air, Philippine Airlines, Qatar Airways, STARLUX Airlines, Singapore Airlines, Turkish Airlines, United
Popular airline
Cathay Pacific
Distance
6487 mi

Frequently asked questions

How much is a Cathay Pacific flight from Seattle - Tacoma Intl. Airport (SEA) to Hong Kong Intl. Airport (HKG)?
Grab cheap return Cathay Pacific flights from $807 from SEA to HKG by filtering your results from "Price (lowest to highest)" on Expedia. Or look for options from $418 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to HKG with Cathay Pacific?
August is one of the cheapest months to get away to Hong Kong with Cathay Pacific. You could also find great prices on one-way and return fares in July.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Hong Kong Intl. Airport (HKG) with Cathay Pacific?
Start your search for Cathay Pacific flights from SEA to HKG about one month before you want to go. The cheapest time to reserve an international flight is generally 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. Regardless of itinerary or ticket type, the best day to book international airfare is usually Sunday. Friday is often the most expensive. Passengers booking on a Sunday can save an average of 17% compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Cathay Pacific fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Hong Kong Intl. Airport (HKG)?
Simply enter your dates, press search and tick the "Nonstop" filter on Expedia to find any direct flights from SEA to HKG with Cathay Pacific or another airline.
What is the earliest Cathay Pacific flight from SEA to HKG?
To find the earliest departures from SEA to HKG with Cathay Pacific, filter your results by "Early Morning" and "Morning." Choosing an early flight generally means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Cathay Pacific fly into in Hong Kong?
Get on a Cathay Pacific flight from Seattle - Tacoma Intl. Airport (SEA) to Hong Kong, and you're most likely to come in to Hong Kong Intl. Airport (HKG). This is the airline's primary hub in this city.
What kind of luggage can I take on a Cathay Pacific flight from Seattle - Tacoma Intl. Airport (SEA) to Hong Kong Intl. Airport (HKG)?
On Cathay Pacific, you can fly standard economy from SEA to HKG with a small personal item and 1 cabin bag. Your carry-on bag should be no larger than 22 inches x 9 inches x 14 inches and weigh less than 33 lb. Exceeding baggage limits can lead to extra charges, so read your airline's latest policies before finalizing your booking.
Why fly with Cathay Pacific from SEA to HKG?
Heading from SEA to HKG with Cathay Pacific means enjoying a host of benefits, such as an excellent in-flight experience and top-tier customer service. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That's in addition to the Marco Polo Club points you can earn with Cathay Pacific.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Cathay Pacific flight from Seattle - Tacoma Intl. Airport (SEA) to Hong Kong Intl. Airport (HKG)?
Depending on the type of ticket you purchased, a fee generally applies if you cancel or reschedule your flight more than 24 hours after it has been confirmed. To secure flexible plane tickets, select our "Changes included" or "No cancel fee" filter when you search for flights. For additional information on changing or canceling your reservation, visit "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.