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

EVA Air is the most popular carrier operating from Seattle/Tacoma Intl to Hangzhou

What airlines fly to Hangzhou?

Delta, Korean Air and Asiana Airlines 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 64% of people opting to fly with this airline when traveling to Hangzhou. Keep in mind that there are 8 different airlines that fly to Hangzhou on a routine basis, so you have a few additional options to choose from.

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?

As of October 2025, there is 1 operator available to choose from 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.

$475 Cheap Flights from Seattle to Hangzhou in 2025/26

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Find the cheapest flights from Seattle to Hangzhou

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:10 am - 1:45 pmSEA-HGH

21h 35m1 stop

3:05 pm - 1:55 pmHGH-SEA

14h 50m1 stop

$749Asiana Airlines

Find Deal

lun., dic. 1 - dom., dic. 7

12:10 am - 1:45 pmSEA-HGH

21h 35m1 stop

2:00 pm - 7:16 pmHGH-SEA

21h 16m2 stops

$753Multiple Airlines

Find Deal

dom., nov. 9 - mié., nov. 19

10:00 am - 10:15 amSEA-HGH

32h 15m1 stop

7:30 am - 8:00 amHGH-SEA

16h 30m1 stop

$900Hainan Airlines

Find Deal

sáb., nov. 29 - sáb., dic. 6

11:00 am - 10:55 amSEA-HGH

31h 55m1 stop

2:40 pm - 9:00 amHGH-SEA

34h 20m1 stop

$910Korean Air

Find Deal

lun., nov. 17 - vie., nov. 21

7:55 pm - 10:10 amSEA-HGH

22h 15m2 stops

11:25 am - 6:52 pmHGH-SEA

23h 27m2 stops

$942Cathay Pacific

Find Deal

dom., mar. 1 - jue., mar. 5

7:54 pm - 10:10 amSEA-HGH

22h 16m2 stops

7:30 pm - 7:04 amHGH-SEA

27h 34m2 stops

$974Cathay Pacific

Find Deal

mar., dic. 2 - dom., dic. 7

11:15 am - 10:55 amSEA-HGH

31h 40m1 stop

12:05 pm - 1:20 pmHGH-SEA

17h 15m1 stop

$1,005Korean Air

Find Deal

lun., nov. 10 - mié., nov. 19

10:00 am - 1:30 pmSEA-HGH

35h 30m1 stop

7:35 pm - 8:00 amHGH-SEA

52h 25m2 stops

$1,060Hainan Airlines

Find Deal

mar., dic. 2 - dom., dic. 7

8:45 am - 10:00 pmSEA-HGH

45h 15m1 stop

11:10 pm - 7:10 amHGH-SEA

48h 00m1 stop

$1,332Singapore Airlines

Find Deal

mar., dic. 2 - dom., dic. 7

8:45 am - 9:55 pmSEA-HGH

45h 10m1 stop

11:10 pm - 7:10 amHGH-SEA

24h 00m1 stop

$1,480Singapore Airlines

Find Deal

dom., mar. 1 - jue., mar. 5

Asiana Airlines flights from Seattle to Hangzhou

Our best Asiana Airlines deals on Seattle to Hangzhou flight tickets

Asiana Airlines

Dec 1

SEA12:10 amSeattle/Tacoma Intl

21h 35m

1 stop

HGH1:45 pmHangzhou

Dec 7

HGH3:05 pmHangzhou

14h 50m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$749

Find similar

Asiana Airlines

Dec 1

SEA12:10 amSeattle/Tacoma Intl

21h 35m

1 stop

HGH1:45 pmHangzhou

Dec 7

HGH3:05 pmHangzhou

14h 50m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$929

Find similar

Asiana Airlines

Feb 28

SEA12:10 amSeattle/Tacoma Intl

21h 35m

1 stop

HGH1:45 pmHangzhou

Mar 5

HGH3:05 pmHangzhou

19h 22m

2 stops

SEA6:27 pmSeattle/Tacoma Intl

$1,333

Find similar

Hainan Airlines flights from Seattle to Hangzhou

Our best Hainan Airlines deals on Seattle to Hangzhou flight tickets

Hainan Airlines

Nov 29

SEA10:00 amSeattle/Tacoma Intl

32h 15m

1 stop

HGH10:15 amHangzhou

Dec 6

HGH7:30 amHangzhou

16h 30m

1 stop

SEA8:00 amSeattle/Tacoma Intl

$900

Find similar

Hainan Airlines

Oct 21

SEA11:00 amSeattle/Tacoma Intl

18h 05m

1 stop

HGH8:05 pmHangzhou

Oct 28

HGH7:30 amHangzhou

16h 30m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$994

Find similar

Hainan Airlines

Oct 21

SEA11:00 amSeattle/Tacoma Intl

18h 05m

1 stop

HGH8:05 pmHangzhou

Nov 4

HGH7:30 amHangzhou

16h 30m

1 stop

SEA8:00 amSeattle/Tacoma Intl

$1,028

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

lun. 12/1

12:10 am-1:45 pm

1 stop21h 35m

Hangzhou

dom. 12/7

3:05 pm-1:55 pm

1 stop14h 50m

$749

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

dom. 11/9

12:10 am-1:45 pm

1 stop21h 35m

Hangzhou

mié. 11/19

2:00 pm-7:16 pm

2 stops21h 16m

$753

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

sáb. 11/29

10:00 am-10:15 am

1 stop32h 15m

Hangzhou

sáb. 12/6

7:30 am-8:00 am

1 stop16h 30m

$900

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

lun. 11/17

11:00 am-10:55 am

1 stop31h 55m

Hangzhou

vie. 11/21

2:40 pm-9:00 am

1 stop34h 20m

$910

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

dom. 3/1

7:55 pm-10:10 am

2 stops22h 15m

Hangzhou

jue. 3/5

11:25 am-6:52 pm

2 stops23h 27m

$942

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mar. 12/2

7:54 pm-10:10 am

2 stops22h 16m

Hangzhou

dom. 12/7

7:30 pm-7:04 am

2 stops27h 34m

$974

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

lun. 11/10

11:15 am-10:55 am

1 stop31h 40m

Hangzhou

mié. 11/19

12:05 pm-1:20 pm

1 stop17h 15m

$1,005

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mar. 12/2

10:00 am-1:30 pm

1 stop35h 30m

Hangzhou

dom. 12/7

7:35 pm-8:00 am

2 stops52h 25m

$1,060

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mar. 12/2

8:45 am-10:00 pm

1 stop45h 15m

Hangzhou

dom. 12/7

11:10 pm-7:10 am

1 stop48h 00m

$1,332

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

dom. 3/1

8:45 am-9:55 pm

1 stop45h 10m

Hangzhou

jue. 3/5

11:10 pm-7:10 am

1 stop24h 00m

$1,480

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest day to depart on your flight to Hangzhou?

Our data shows that Thursday is the least expensive day to fly to Hangzhou. Tickets to fly out on this day can be as low as $803. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $1,303. These prices are subject to change though, so be sure to set up a Price Alert for flights to Hangzhou.

What is the cheapest time of day to depart on your flight to Hangzhou?

Our data shows that the cheapest Seattle to Hangzhou flights are usually those with departure times in the morning. Our users have found flights to Hangzhou in the morning for as low as $846. In contrast, the most expensive time of day to depart to Hangzhou is in the evening when prices are around $1,270.

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

Direct flights	None

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. 17h 55m 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?
As of October 2025, there is 1 operator available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from Seattle to Hangzhou is Hainan Airlines, representing 100% of all bookings.

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 Airlines	PriceFrom $640	Free Cancellation	Rating 8.2 45 reviews		Search Hainan Airlines 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.