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$886+ Cheap flights from Seattle (SEA) to Hangzhou (HGH)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HGH
Jul 19 — Jul 261
Sun 7/19
Sun 7/26
1 adult, Economy
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Cheap flight deals from Seattle to Hangzhou

Cheapest flights from Seattle to Hangzhou
Explore the most affordable flight options available from Seattle to Hangzhou. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 19, 2026.

This FlightHub deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:45 am
SEA
-
HGH
1 stop35h 55m
Cathay Pacific
Thu 11/58:00 am
HGH
-
SEA
1 stop17h 10m
Cathay Pacific
Deal found 6/14$886
This Korean Air deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:50 pm
SEA
-
HGH
1 stop33h 35m
Korean Air
Mon 11/22:40 pm
HGH
-
SEA
1 stop34h 20m
Korean Air
Deal found 6/14$901
This Korean Air deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/116:55 pm
SEA
-
HGH
2 stops51h 30m
Korean Air
Mon 11/22:40 pm
HGH
-
SEA
1 stop34h 20m
Korean Air
Deal found 6/14$907
This Cathay Pacific deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:45 am
SEA
-
HGH
1 stop39h 45m
Cathay Pacific
Sun 11/13:45 pm
HGH
-
SEA
1 stop33h 25m
Cathay Pacific
Deal found 6/14$909
This Cathay Pacific deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:50 am
SEA
-
HGH
1 stop19h 40m
Cathay Pacific
Mon 11/98:00 am
HGH
-
SEA
1 stop17h 10m
Cathay Pacific
Deal found 6/15$919
This FlightHub deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:10 am
SEA
-
HGH
1 stop22h 35m
Asiana Airlines
Thu 11/53:05 pm
HGH
-
SEA
1 stop14h 50m
Asiana Airlines
Deal found 6/14$928
This oojo deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1411:45 am
SEA
-
HGH
1 stop19h 50m
Cathay Pacific
Wed 10/288:00 am
HGH
-
SEA
1 stop17h 10m
Cathay Pacific
Deal found 6/19$949
This Korean Air deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:50 pm
SEA
-
HGH
1 stop33h 35m
Korean Air
Fri 11/62:40 pm
HGH
-
SEA
1 stop34h 20m
Korean Air
Deal found 6/14$951
This Asiana Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1112:10 am
SEA
-
HGH
1 stop22h 35m
Asiana Airlines
Tue 11/33:05 pm
HGH
-
SEA
1 stop14h 50m
Asiana Airlines
Deal found 6/14$955
This Asiana Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 am
SEA
-
HGH
1 stop22h 35m
Asiana Airlines
Sun 10/43:10 pm
HGH
-
SEA
1 stop15h 05m
Asiana Airlines
Deal found 6/18$956

Find flight deals from Seattle to Hangzhou

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Hangzhou (HGH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$886
(FlightHub)
Provider with most accurate pricing for Seattle/Tacoma Intl-Hangzhou flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Hangzhou flights.
Search Deals
From Seattle/Tacoma Intl to Hangzhou
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Hangzhou that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 19, 2026.
Use the filters below to find and compare flights from Seattle to Hangzhou that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Thu 11/5

10:50 am-10:30 pm

1 stop19h 40m

Hangzhou

Mon 11/9

8:00 am-9:10 am

1 stop17h 10m

$919

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 10/14

11:45 am-10:35 pm

1 stop19h 50m

Hangzhou

Wed 10/28

8:00 am-10:10 am

1 stop17h 10m

$949

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Tue 9/29

12:10 am-1:45 pm

1 stop22h 35m

Hangzhou

Sun 10/4

3:10 pm-3:15 pm

1 stop15h 05m

$956

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Fri 10/16

2:30 pm-1:25 pm

2 stops55h 55m

Hangzhou

Mon 11/2

2:40 pm-9:00 am

1 stop34h 20m

$957

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 9/30

5:59 pm-10:10 am

2 stops25h 11m

Hangzhou

Sun 10/4

7:45 pm-12:56 pm

2 stops32h 11m

$1,162

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Seattle-Hangzhou flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Hangzhou flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Hangzhou flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Hangzhou flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Hangzhou flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Hangzhou

Have a flexible travel schedule? Discover the best time to fly to Hangzhou from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Hangzhou

Get insights into the airlines that provide service to Hangzhou. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hangzhou. Reviews last updated June 19, 2026.
Read reviews from past customers who have flown Cathay Pacific from Seattle to Hangzhou. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Cathay Pacific
7.6
Good
1,382 reviews

Comfort

7.6

Food

7.3

Crew

8.1

Overall

7.6

Entertainment

7.8

Boarding

7.9

Reviews

1 / 20
4.0
Okay

Tejbir,Apr 2026

YVR - HKG

Flight was late 30 min so was not able to catch next flight. Instead of Delhi they send to Hyderabad and from their to Delhi. It took full 8hours more. Lot of trouble and confusion 😕
Cathay Pacific
7.6
Good
1,382 reviews
Cathay Pacific
7.6
Good
1,382 reviews

Comfort

7.6

Food

7.3

Crew

8.1

Overall

7.6

Entertainment

7.8

Boarding

7.9

Reviews

1 / 20
4.0
Okay

Tejbir,Apr 2026

YVR - HKG

Flight was late 30 min so was not able to catch next flight. Instead of Delhi they send to Hyderabad and from their to Delhi. It took full 8hours more. Lot of trouble and confusion 😕

Related info for your journey

Find useful and relevant information for your journey from Seattle to Hangzhou. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Hangzhou?

    For as low as $919, Cathay Pacific can have you in Hangzhou from Seattle in 19h 40m. The distance from Seattle to Hangzhou is about 5805 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to Hangzhou round-trip?

    Flying on Cathay Pacific is currently your cheapest option to Hangzhou, with prices starting at $872.

  • Can I find deals for flights from Seattle to Hangzhou that include hotel bookings?

    Yes. In addition to deals on Seattle to Hangzhou flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Hangzhou?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Hangzhou.

  • Can I find deals for business class flights from Seattle to Hangzhou?

    Yes. Cheapflights offers flight deals from Seattle to Hangzhou by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

Complete your trip to Hangzhou by adding a car rental and/or hotel reservation to your travel itinerary.
Hangzhou car rentals
Shanghai Hongqiao Intl Airport car rentals
Hangzhou Airport car rentals

Top airline flying from Seattle to Hangzhou

Discover the top airline that operate flights from Seattle to Hangzhou. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$872Average$887FlexibilityNo cancel feeOn-time72%

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