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$357+ 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 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HGH
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap 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 September 15, 2025.

Round-trip from

$842
(Air China)

One-way from

$357
(oojo)
From Seattle/Tacoma Intl to Hangzhou
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One-way flight from Seattle/Tacoma Intl to Hangzhou
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Find 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 September 15, 2025.

This Air China deal was found by Cheapflights users on 9/13. 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:36 pmSEA - HGH
2 stops32h 14mMultiple Airlines
Sun 12/79:00 pmHGH - SEA
2 stops54h 55mMultiple Airlines
Deal found 9/13$842
This oojo deal was found by Cheapflights users on 9/13. 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 12/210:00 amSEA - HGH
1 stop17h 55mHainan Airlines
Sun 12/77:35 pmHGH - SEA
2 stops52h 25mHainan Airlines
Deal found 9/13$887
This Air China deal was found by Cheapflights users on 9/14. 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:26 pmSEA - HGH
2 stops25h 19mMultiple Airlines
Fri 11/76:00 pmHGH - SEA
2 stops33h 39mMultiple Airlines
Deal found 9/14$904
This Korean Air deal was found by Cheapflights users on 9/15. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2012:50 pmSEA - HGH
1 stop33h 35mKorean Air
Fri 11/72:40 pmHGH - SEA
1 stop34h 20mKorean Air
Deal found 9/15$915
This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2912:45 amSEA - HGH
2 stops30h 45mMultiple Airlines
Thu 11/63:10 pmHGH - SEA
1 stop14h 45mMultiple Airlines
Deal found 9/15$1,011
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:15 pmSEA - HGH
2 stops22h 55mCathay Pacific
Sat 11/811:25 amHGH - SEA
2 stops25h 37mCathay Pacific
Deal found 9/14$1,040

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 September 15, 2025.
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

Tue 12/2

10:00 am-7:55 pm

1 stop17h 55m

Hangzhou

Sun 12/7

7:35 pm-8:00 am

2 stops52h 25m

$887

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Thu 10/30

4:40 pm-11:40 pm

2 stops40h 00m

Hangzhou

Thu 11/6

8:10 am-1:20 pm

2 stops21h 10m

$904

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Mon 10/20

5:26 pm-9:45 am

2 stops25h 19m

Hangzhou

Fri 11/7

6:00 pm-11:39 am

2 stops33h 39m

$904

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Mon 10/20

12:45 pm-1:25 pm

2 stops33h 40m

Hangzhou

Fri 11/7

2:40 pm-9:00 am

1 stop34h 20m

$920

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Sat 10/18

8:15 pm-10:10 am

2 stops22h 55m

Hangzhou

Sat 11/8

11:25 am-9:02 pm

2 stops25h 37m

$1,040

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Sun 3/1

5:40 pm-10:30 pm

2 stops36h 50m

Hangzhou

Thu 3/5

11:25 am-6:51 pm

2 stops23h 26m

$1,067

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Sat 11/29

10:00 am-10:15 am

1 stop32h 15m

$357

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 11/26

9:30 pm-11:40 pm

2 stops58h 10m

$479

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 11/26

11:00 am-1:30 pm

1 stop34h 30m

$505

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Sun 11/30

11:45 pm-8:10 pm

2 stops28h 25m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 14 results
1
2

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, September is the cheapest month in which you can book a flight from Seattle to Hangzhou (average of $809). Flying from Seattle to Hangzhou in June is currently the most expensive (average of $1,692). 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 September 15, 2025.
Read reviews from past customers who have flown Hainan Airlines 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
45 reviews

Entertainment

7.5

Boarding

8.5

Crew

8.8

Food

8.4

Overall

8.2

Comfort

8.0

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
45 reviews
Hainan Airlines
8.2
Very good
45 reviews

Entertainment

7.5

Boarding

8.5

Crew

8.8

Food

8.4

Overall

8.2

Comfort

8.0

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 $887, Hainan Airlines 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.

  • 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, September is the cheapest month in which you can book a flight from Seattle to Hangzhou (average of $809). Flying from Seattle to Hangzhou in June is currently the most expensive (average of $1,692). 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

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapest$468Average$1,034FlexibilityNo cancel feeOn-time61%

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