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$859+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HGH
Feb 24 — Mar 31
Tue 2/24
Tue 3/3
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 January 25, 2026.

This oojo deal was found by Cheapflights users on 1/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/912:00 pm
SEA
-
HGH
1 stop31h 55m
Korean Air
Mon 3/162:40 pm
HGH
-
SEA
1 stop34h 20m
Korean Air
Deal found 1/23$859
This Trip.com deal was found by Cheapflights users on 1/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/212:10 am
SEA
-
HGH
1 stop21h 35m
Asiana Airlines
Wed 3/183:05 pm
HGH
-
SEA
1 stop14h 50m
Asiana Airlines
Deal found 1/23$903
This Asiana Airlines deal was found by Cheapflights users on 1/22. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/512:55 am
SEA
-
HGH
1 stop21h 50m
Asiana Airlines
Thu 4/93:10 pm
HGH
-
SEA
1 stop14h 45m
Asiana Airlines
Deal found 1/22$906
This oojo deal was found by Cheapflights users on 1/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/310:00 am
SEA
-
HGH
1 stop17h 55m
Hainan Airlines
Wed 3/188:50 pm
HGH
-
SEA
2 stops27h 15m
Hainan Airlines
Deal found 1/23$909
This Kiwi.com deal was found by Cheapflights users on 1/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1412:45 am
SEA
-
HGH
2 stops22h 45m
Multiple Airlines
Fri 3/209:55 am
HGH
-
SEA
1 stop21h 10m
Multiple Airlines
Deal found 1/22$950
This oojo deal was found by Cheapflights users on 1/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:29 pm
SEA
-
HGH
2 stops35h 01m
Cathay Pacific
Wed 3/188:00 am
HGH
-
SEA
2 stops26h 03m
Cathay Pacific
Deal found 1/23$963
This Cathay Pacific deal was found by Cheapflights users on 1/23. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:41 am
SEA
-
HGH
2 stops22h 54m
Cathay Pacific
Thu 4/98:00 am
HGH
-
SEA
1 stop17h 05m
Cathay Pacific
Deal found 1/23$982
This FlightHub deal was found by Cheapflights users on 1/22. 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.
Fri 3/1312:45 am
SEA
-
HGH
2 stops46h 50m
Multiple Airlines
Fri 3/209:55 am
HGH
-
SEA
1 stop21h 10m
Multiple Airlines
Deal found 1/22$983

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 January 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$859
(oojo)
Provider with most accurate pricing for Seattle/Tacoma Intl-Hangzhou flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Hangzhou flights.
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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 January 25, 2026.
Use the filters below to find and compare flights from Seattle to Hangzhou that are best for you.

Fly from

Seattle

Fly to

Hangzhou

Route

Depart

Return

Price

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Mon 3/9

12:00 pm-10:55 am

1 stop31h 55m

Hangzhou

Mon 3/16

2:40 pm-10:00 am

1 stop34h 20m

$859

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Mon 3/2

12:10 am-1:45 pm

1 stop21h 35m

Hangzhou

Wed 3/18

3:05 pm-2:55 pm

1 stop14h 50m

$903

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Sun 4/5

12:55 am-1:45 pm

1 stop21h 50m

Hangzhou

Thu 4/9

3:10 pm-2:55 pm

1 stop14h 45m

$906

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Tue 3/3

10:00 am-7:55 pm

1 stop17h 55m

Hangzhou

Wed 3/18

8:50 pm-9:05 am

2 stops27h 15m

$909

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Sat 3/14

12:45 am-2:30 pm

2 stops22h 45m

Hangzhou

Fri 3/20

9:55 am-4:05 pm

1 stop21h 10m

$950

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Tue 3/3

7:29 pm-10:30 pm

2 stops35h 01m

Hangzhou

Wed 3/18

8:00 am-7:03 pm

2 stops26h 03m

$963

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Mon 4/6

8:41 am-10:35 pm

2 stops22h 54m

Hangzhou

Thu 4/9

8:00 am-10:05 am

1 stop17h 05m

$982

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

  • 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Hangzhou

What is the cheapest month to book a flight from Seattle to Hangzhou?

Currently, April is the cheapest month in which you can book a flight from Seattle to Hangzhou (average of $435). Flying from Seattle to Hangzhou in July is currently the most expensive (average of $1,132). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 January 25, 2026.
Read reviews from past customers who have flown Hainan Airlines and 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.
Hainan Airlines
8.2
Very good
62 reviews

Boarding

8.5

Food

8.3

Overall

8.2

Entertainment

7.7

Comfort

8.1

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
Hainan Airlines
8.2
Very good
62 reviews
Hainan Airlines
8.2
Very good
62 reviews

Boarding

8.5

Food

8.3

Overall

8.2

Entertainment

7.7

Comfort

8.1

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
Cathay Pacific
7.6
Good
1,144 reviews
Hainan Airlines
8.2
Very good
62 reviews

Boarding

8.5

Food

8.3

Overall

8.2

Entertainment

7.7

Comfort

8.1

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.

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 $909, Korean Air can have you in Hangzhou from Seattle in 17h 55m. 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 are the cheapest airlines flying from Seattle to Hangzhou round-trip?

    Flying on Hainan Airlines is currently your cheapest option to Hangzhou, with prices starting at $843. Another option worth looking into is Cathay Pacific, starting at $872 round trip.

  • 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.

  • What is the cheapest month to book a flight from Seattle to Hangzhou?

    Currently, April is the cheapest month in which you can book a flight from Seattle to Hangzhou (average of $435). Flying from Seattle to Hangzhou in July is currently the most expensive (average of $1,132). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
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Hangzhou Airport car rentals

Top 2 airlines flying from Seattle to Hangzhou

Discover the top 2 airlines 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 January 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapest$843Average$974FlexibilityNo cancel feeOn-time61%
Cathay PacificCheapest$872Average$887FlexibilityNo cancel feeOn-time72%

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