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$392+ Cheap flights from Seattle (SEA) to Hangzhou (HGH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HGH
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
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 July 24, 2026.

This oojo deal was found by Cheapflights users on 7/22. 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.
Tue 9/112:25 pm
SEA
-
HGH
1 stop19h 10m
Cathay Pacific
Tue 9/2911:25 am
HGH
-
SEA
1 stop37h 40m
Cathay Pacific
Deal found 7/22$652
This FlightHub deal was found by Cheapflights users on 7/22. 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.
Mon 8/3112:25 pm
SEA
-
HGH
1 stop30h 45m
Cathay Pacific
Mon 9/287:45 pm
HGH
-
SEA
1 stop29h 20m
Cathay Pacific
Deal found 7/22$658
This Booking.com deal was found by Cheapflights users on 7/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:25 pm
SEA
-
HGH
1 stop35h 15m
Cathay Pacific
Mon 9/73:55 pm
HGH
-
SEA
1 stop33h 25m
Cathay Pacific
Deal found 7/23$659
This oojo deal was found by Cheapflights users on 7/19. 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.
Tue 8/1812:25 pm
SEA
-
HGH
1 stop19h 10m
Cathay Pacific
Mon 8/243:55 pm
HGH
-
SEA
1 stop33h 25m
Cathay Pacific
Deal found 7/19$724
This oojo deal was found by Cheapflights users on 7/20. 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 8/1912:25 pm
SEA
-
HGH
1 stop19h 10m
Cathay Pacific
Wed 8/267:45 pm
HGH
-
SEA
1 stop29h 35m
Cathay Pacific
Deal found 7/20$728
This KAYAK deal was found by Cheapflights users on 7/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:25 pm
SEA
-
HGH
1 stop39h 05m
Cathay Pacific
Fri 10/23:55 pm
HGH
-
SEA
1 stop33h 10m
Cathay Pacific
Deal found 7/22$731
This oojo deal was found by Cheapflights users on 7/22. 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.
Tue 9/16:49 am
SEA
-
HGH
2 stops24h 46m
Multiple Airlines
Tue 9/293:55 pm
HGH
-
SEA
1 stop33h 10m
Multiple Airlines
Deal found 7/22$753
This FlightHub deal was found by Cheapflights users on 7/22. 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.
Mon 8/3112:25 pm
SEA
-
HGH
1 stop30h 45m
Cathay Pacific
Tue 9/2911:25 am
HGH
-
SEA
2 stops20h 02m
Cathay Pacific
Deal found 7/22$759
This Gotogate deal was found by Cheapflights users on 7/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:25 pm
SEA
-
HGH
1 stop39h 05m
Multiple Airlines
Mon 9/73:55 pm
HGH
-
SEA
2 stops31h 13m
Multiple Airlines
Deal found 7/23$762
This oojo deal was found by Cheapflights users on 7/19. 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.
Sat 11/2110:50 am
SEA
-
HGH
1 stop19h 05m
Cathay Pacific
Sun 12/611:25 am
HGH
-
SEA
1 stop37h 45m
Cathay Pacific
Deal found 7/19$774

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 July 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$652
(oojo)

One-way from

$392
(oojo)
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
One-way flight from Seattle/Tacoma Intl to Hangzhou
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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 July 24, 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

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 8/19

12:25 pm-10:35 pm

1 stop19h 10m

Hangzhou

Wed 8/26

7:45 pm-7:06 am

2 stops26h 21m

$754

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Sat 11/21

10:50 am-9:55 pm

1 stop19h 05m

Hangzhou

Sun 12/6

11:25 am-9:10 am

1 stop37h 45m

$774

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Thu 8/13

6:03 am-10:35 pm

2 stops25h 32m

Hangzhou

Thu 8/20

8:00 am-3:32 pm

2 stops22h 32m

$946

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Fri 9/11

5:59 pm-10:35 pm

2 stops37h 36m

Hangzhou

Tue 9/15

11:25 am-8:38 pm

2 stops24h 13m

$949
Quickest round-trip

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Thu 9/10

12:10 am-1:45 pm

1 stop22h 35m

Hangzhou

Tue 9/15

3:10 pm-3:15 pm

1 stop15h 05m

$956

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Thu 9/3

12:10 am-1:45 pm

1 stop22h 35m

Hangzhou

Tue 9/29

3:10 pm-3:15 pm

1 stop15h 05m

$956
Cheapest one-way

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Thu 9/10

12:25 pm-2:40 pm

1 stop35h 15m

$392

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Thu 9/10

11:06 am-6:10 pm

2 stops40h 04m

$445
Quickest one-way

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Tue 8/11

3:59 pm-10:55 am

2 stops27h 56m

$460

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Tue 8/11

2:10 pm-4:45 pm

3 stops35h 35m

$2,721

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

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 July 24, 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
1,425 reviews

Boarding

7.9

Crew

8.1

Food

7.3

Comfort

7.6

Entertainment

7.7

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Ernest,Jun 2026

SFO - HKG

As good as can be expected for economy class international flight, on time very professional crew. The plane was clean bathrooms clean, decent food, connecting flight on time, with another tasty meal. Love Cathay Pacific
Cathay Pacific
7.6
Good
1,425 reviews
Cathay Pacific
7.6
Good
1,425 reviews

Boarding

7.9

Crew

8.1

Food

7.3

Comfort

7.6

Entertainment

7.7

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Ernest,Jun 2026

SFO - HKG

As good as can be expected for economy class international flight, on time very professional crew. The plane was clean bathrooms clean, decent food, connecting flight on time, with another tasty meal. Love Cathay Pacific

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 $754, Cathay Pacific can have you in Hangzhou from Seattle in 19h 10m. 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 July 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$872Average$986FlexibilityNo cancel feeOn-time72%

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