$423 Cheap Flights from Hong Kong (HKG) to Seattle (SEA)

View $423 flight on Fri, Oct 17, 2025Opens in a new window

Popular airlines from Hong Kong International Airport (HKG) to Seattle-Tacoma International Airport (SEA)

Cheap Flights from Hong Kong to Seattle (HKG-SEA)

Prices were available within the past 7 days and start at $423 for one-way flights and $629 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Thu, Sep 11 - Thu, Sep 25
HKG
Hong Kong SAR
SEA
Seattle
$629 Roundtrip, found 6 days ago
$629
Roundtrip
found 6 days ago
Select Korean Air flight, departing Thu, Sep 11 from Hong Kong SAR to Seattle, returning Thu, Sep 25, priced at $629 found 6 days ago
Asiana Airlines
Mon, Feb 2 - Sun, Feb 8
HKG
Hong Kong SAR
SEA
Seattle
$667 Roundtrip, found 1 day ago
$667
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Mon, Feb 2 from Hong Kong SAR to Seattle, returning Sun, Feb 8, priced at $667 found 1 day ago
Philippine Airlines
Thu, Nov 20 - Tue, Dec 2
HKG
Hong Kong SAR
SEA
Seattle
$679 Roundtrip, found 6 days ago
$679
Roundtrip
found 6 days ago
Select Philippine Airlines flight, departing Thu, Nov 20 from Hong Kong SAR to Seattle, returning Tue, Dec 2, priced at $679 found 6 days ago
Air Canada
Wed, Dec 24 - Wed, Jan 7
HKG
Hong Kong SAR
SEA
Seattle
$682 Roundtrip, found 4 days ago
$682
Roundtrip
found 4 days ago
Select Air Canada flight, departing Wed, Dec 24 from Hong Kong SAR to Seattle, returning Wed, Jan 7, priced at $682 found 4 days ago
China Airlines
Tue, Oct 14 - Tue, Dec 16
HKG
Hong Kong SAR
SEA
Seattle
$685 Roundtrip, found 1 day ago
$685
Roundtrip
found 1 day ago
Select China Airlines flight, departing Tue, Oct 14 from Hong Kong SAR to Seattle, returning Tue, Dec 16, priced at $685 found 1 day ago
Hainan Airlines
Wed, Sep 17 - Sat, Sep 20
HKG
Hong Kong SAR
SEA
Seattle
$701 Roundtrip, found 2 days ago
$701
Roundtrip
found 2 days ago
Select Hainan Airlines flight, departing Wed, Sep 17 from Hong Kong SAR to Seattle, returning Sat, Sep 20, priced at $701 found 2 days ago
STARLUX Airlines
Wed, Nov 26 - Wed, Jan 14
HKG
Hong Kong SAR
SEA
Seattle
$742 Roundtrip, found 6 hours ago
$742
Roundtrip
found 6 hours ago
Select STARLUX Airlines flight, departing Wed, Nov 26 from Hong Kong SAR to Seattle, returning Wed, Jan 14, priced at $742 found 6 hours ago
EVA Airways
Thu, Nov 27 - Thu, Jan 15
HKG
Hong Kong SAR
SEA
Seattle
$759 Roundtrip, found 5 hours ago
$759
Roundtrip
found 5 hours ago
Select EVA Airways flight, departing Thu, Nov 27 from Hong Kong SAR to Seattle, returning Thu, Jan 15, priced at $759 found 5 hours ago
United
Fri, Sep 19 - Sat, Sep 20
HKG
Hong Kong SAR
SEA
Seattle
$766 Roundtrip, found 6 days ago
$766
Roundtrip
found 6 days ago
Select United flight, departing Fri, Sep 19 from Hong Kong SAR to Seattle, returning Sat, Sep 20, priced at $766 found 6 days ago
Delta
Thu, Sep 4 - Thu, Sep 11
HKG
Hong Kong SAR
SEA
Seattle
$834 Roundtrip, found 6 days ago
$834
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Sep 4 from Hong Kong SAR to Seattle, returning Thu, Sep 11, priced at $834 found 6 days ago

Find the cheapest month to fly from Chek Lap Kok (HKG) to Seattle (SEA)

September is typically the cheapest month to fly

From $627 - $962 per traveler.

Graph displaying average flight prices per month

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $742
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $742
Flights from Hong Kong (HKG) to Seattle (SEA)
Origin airport
Hong Kong Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Hainan Airlines, Japan Airlines, Korean Air, Philippine Airlines, Qatar Airways, STARLUX Airlines, United
Roundtrip price
$629
Distance
6487 mi

Hong Kong to Seattle Flights

The cheapest times to fly from Hong Kong to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Hong Kong to Seattle are during the month of September. You can find some of the cheapest flights from Hong Kong to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Hong Kong to Seattle

Sunday is one of the best days to book for cheap flights from Hong Kong to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Hong Kong to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Hong Kong to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $423 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Hong Kong to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Hong Kong to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA) cost?
Grab a cheap one-way flight from $423 or cheap return flight from $629 from Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA)?
September is the least expensive month to fly from HKG to SEA. Timing your trip outside of the busy season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest HKG to SEA flight.
How many flights per day from Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA)?
You'll have to take a flight with a layover when traveling from Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from HKG to SEA?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid potential delays on the Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA) route, travel before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Waiting until right before your break to book a ticket from HKG to SEA generally means paying more. While you may come across some last-minute deals, they aren't always guaranteed. Be flexible with your travel plans to maximize your chances of getting a bargain.
Is it cheaper to book a HKG to SEA flight and hotel package?
Compared with arranging flights and hotels separately, booking a HKG to SEA flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place takes the hassle out of planning your trip. Just secure your flights and select from our wide range of hotels, then tailor your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Hong Kong Intl. Airport (HKG) to Seattle - Tacoma Intl. Airport (SEA)?
Usually, it's possible to cancel or reschedule your HKG to SEA flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.