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Cheap flights from Seattle to Hangzhou from $402

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Hangzhou departing on 8/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Hangzhou

Cheap round-trip flights

Enter your travel dates to find the best prices.
Cathay Pacific Logo
11:45 am - 10:10 am
SEA
-
HGH
31h 25m
1 stop
Cathay Pacific Logo
3:55 pm - 10:05 am
HGH
-
SEA
33h 10m
1 stop
$781Cathay Pacific
Wed, Apr 29 - Sun, May 3
Cathay Pacific Logo
11:45 am - 2:40 pm
SEA
-
HGH
35h 55m
1 stop
Cathay Pacific Logo
7:45 pm - 10:05 am
HGH
-
SEA
29h 20m
1 stop
$823Cathay Pacific
Wed, Apr 29 - Wed, May 6
Cathay Pacific Logo
8:41 am - 2:40 pm
SEA
-
HGH
38h 59m
2 stops
Cathay Pacific Logo
11:25 am - 10:05 am
HGH
-
SEA
37h 40m
1 stop
$874Cathay Pacific
Wed, Apr 29 - Sun, May 3
Cathay Pacific Logo
11:45 am - 10:35 pm
SEA
-
HGH
19h 50m
1 stop
Cathay Pacific Logo
8:00 am - 10:20 am
HGH
-
SEA
17h 20m
1 stop
$898Cathay Pacific
Tue, May 5 - Tue, Jun 2
Cathay Pacific Logo
11:45 am - 8:55 pm
SEA
-
HGH
18h 10m
1 stop
Cathay Pacific Logo
7:45 pm - 10:20 am
HGH
-
SEA
29h 35m
1 stop
$901Cathay Pacific
Wed, May 6 - Mon, Jun 1
Cathay Pacific Logo
8:41 am - 10:35 pm
SEA
-
HGH
22h 54m
2 stops
Cathay Pacific Logo
11:25 am - 10:05 am
HGH
-
SEA
37h 40m
1 stop
$908Cathay Pacific
Wed, Apr 29 - Wed, May 6
Korean Air Logo
5:59 pm - 1:25 pm
SEA
-
HGH
28h 26m
2 stops
Korean Air Logo
2:30 pm - 8:25 pm
HGH
-
SEA
20h 55m
2 stops
$922Korean Air
Wed, Apr 29 - Wed, May 6
Multiple Airlines Logo
11:12 pm - 6:30 pm
SEA
-
HGH
28h 18m
2 stops
Multiple Airlines Logo
7:45 pm - 10:05 am
HGH
-
SEA
29h 20m
1 stop
$934Multiple Airlines
Sun, May 3 - Sun, May 10
Cathay Pacific Logo
8:41 am - 10:35 pm
SEA
-
HGH
22h 54m
2 stops
Cathay Pacific Logo
8:00 am - 10:20 am
HGH
-
SEA
17h 20m
1 stop
$935Cathay Pacific
Thu, May 7 - Tue, Jun 2
Cathay Pacific Logo
8:41 am - 10:35 pm
SEA
-
HGH
22h 54m
2 stops
Cathay Pacific Logo
11:25 am - 10:05 am
HGH
-
SEA
37h 40m
1 stop
$944Cathay Pacific
Fri, May 1 - Fri, May 8

Korean Air flights from Seattle to Hangzhou

Our best Korean Air deals on Seattle to Hangzhou flight tickets
Korean Air
Apr 29
SEA5:59 pmSeattle/Tacoma Intl
28h 26m
2 stops
HGH1:25 pmHangzhou
May 6
HGH2:30 pmHangzhou
20h 55m
2 stops
SEA8:25 pmSeattle/Tacoma Intl
$922
Korean Air
May 4
SEA12:50 pmSeattle/Tacoma Intl
33h 35m
1 stop
HGH1:25 pmHangzhou
Jun 1
HGH2:30 pmHangzhou
35h 30m
1 stop
SEA11:00 amSeattle/Tacoma Intl
$1,006
Korean Air
May 3
SEA7:59 pmSeattle/Tacoma Intl
50h 26m
2 stops
HGH1:25 pmHangzhou
Jun 3
HGH2:30 pmHangzhou
35h 30m
1 stop
SEA11:00 amSeattle/Tacoma Intl
$1,011

Hainan Airlines flights from Seattle to Hangzhou

Our best Hainan Airlines deals on Seattle to Hangzhou flight tickets
Hainan Airlines
May 2
SEA11:00 amSeattle/Tacoma Intl
18h 00m
1 stop
HGH8:00 pmHangzhou
Jun 2
HGH8:25 amHangzhou
15h 35m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$979
Hainan Airlines
May 7
SEA11:05 amSeattle/Tacoma Intl
40h 35m
2 stops
HGH6:40 pmHangzhou
Jun 1
HGH5:30 pmHangzhou
30h 30m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$1,040
Hainan Airlines
May 5
SEA11:00 amSeattle/Tacoma Intl
32h 15m
1 stop
HGH10:15 amHangzhou
Jun 5
HGH9:30 pmHangzhou
26h 30m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$1,125

momondo 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, momondo users made 832,500 searches. Data last updated March 21, 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 4/29

11:45 am-10:10 am

1 stop31h 25m

Hangzhou

Sun 5/3

3:55 pm-10:05 am

1 stop33h 10m

$781

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 4/29

11:45 am-2:40 pm

1 stop35h 55m

Hangzhou

Wed 5/6

7:45 pm-10:05 am

1 stop29h 20m

$823

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 4/29

8:41 am-2:40 pm

2 stops38h 59m

Hangzhou

Sun 5/3

11:25 am-10:05 am

1 stop37h 40m

$874
Quickest round-trip

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Tue 5/5

11:45 am-10:35 pm

1 stop19h 50m

Hangzhou

Tue 6/2

8:00 am-10:20 am

1 stop17h 20m

$898

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 5/6

11:45 am-8:55 pm

1 stop18h 10m

Hangzhou

Mon 6/1

7:45 pm-10:20 am

1 stop29h 35m

$901

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 4/29

8:41 am-10:35 pm

2 stops22h 54m

Hangzhou

Wed 5/6

11:25 am-10:05 am

1 stop37h 40m

$908

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Wed 4/29

5:59 pm-1:25 pm

2 stops28h 26m

Hangzhou

Wed 5/6

2:30 pm-8:25 pm

2 stops20h 55m

$922

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Sun 5/3

11:12 pm-6:30 pm

2 stops28h 18m

Hangzhou

Sun 5/10

7:45 pm-10:05 am

1 stop29h 20m

$934

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Thu 5/7

8:41 am-10:35 pm

2 stops22h 54m

Hangzhou

Tue 6/2

8:00 am-10:20 am

1 stop17h 20m

$935

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

Fri 5/1

8:41 am-10:35 pm

2 stops22h 54m

Hangzhou

Fri 5/8

11:25 am-10:05 am

1 stop37h 40m

$944

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Hangzhou from

How to get the cheapest flight ticket from Seattle to Hangzhou

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Seattle/Tacoma Intl to Hangzhou?

Cathay Pacific is the most popular carrier operating from Seattle/Tacoma Intl to Hangzhou

What airlines fly to Hangzhou?

Delta, Asiana Airlines and Korean Air are the top three most popular airlines that fly to Hangzhou from Seattle according to our data. Delta is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Hangzhou. Keep in mind that there are 9 different airlines that fly to Hangzhou on a routine basis, so you have a few additional options to choose from.

When to book flights from Seattle to Hangzhou

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Hangzhou according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Hangzhou (SEA to HGH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Hangzhou

Fastest flight time

28h 18m

Direct flights

None
The fastest flight from Seattle to Hangzhou takes 28h 18m
There are no direct flights from Seattle to Hangzhou. There are no popular flight routes from Seattle to Hangzhou.
Search flight deals

  • How far is Seattle/Tacoma Intl to Hangzhou by plane?

    Seattle/Tacoma Intl and Hangzhou are 5802.6 mi apart from one another. 28h 18m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Hangzhou Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Hangzhou Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Hangzhou Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Hangzhou Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Hangzhou Airport.

  • What documentation or ID do you need to fly to Hangzhou Airport?

    The travel and health documents required for your trip to Hangzhou Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Hangzhou Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Seattle to Hangzhou?

Best airlines flying from Seattle to Hangzhou

Compare and see reviews for airlines that fly from Seattle to Hangzhou with momondo
Airline
Rating
Free Cancellation
Price
Hainan AirlinesPriceFrom $843Free CancellationRating
8.3
63 reviews
Search Hainan Airlines flights
Cathay PacificPriceFrom $872Free CancellationRating
7.6
1,221 reviews
Search Cathay Pacific flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Hangzhou?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Hangzhou. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to Hangzhou with flexible booking policies on momondo?

All flight searches from Seattle to Hangzhou on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Hangzhou?

momondo helps you find the best flight between Seattle and Hangzhou by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Hangzhou right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Hangzhou now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Hangzhou and let you know when they change.

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