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 69% 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.

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

Hainan Airlines is the most popular carrier operating from Seattle/Tacoma Intl to Hangzhou

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 December 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.

$427 Cheap Flights from Seattle to Hangzhou in 2025/26

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Seattle to Hangzhou

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:02 pm - 11:10 pm

SEA

HGH

41h 08m2 stops

8:00 am - 8:36 pm

HGH

SEA

28h 36m2 stops

$845China Eastern

mer., janv. 21 - mer., janv. 28

11:45 pm - 2:45 pm

SEA

HGH

23h 00m1 stop

10:00 pm - 3:05 pm

HGH

SEA

33h 05m2 stops

$848Multiple Airlines

mer., janv. 21 - mer., janv. 28

11:00 am - 1:30 pm

SEA

HGH

34h 30m1 stop

12:05 pm - 8:36 pm

HGH

SEA

24h 31m2 stops

$916Korean Air

mer., janv. 21 - mer., janv. 28

2:02 pm - 1:30 pm

SEA

HGH

31h 28m2 stops

12:05 pm - 8:36 pm

HGH

SEA

24h 31m2 stops

$921Korean Air

mer., janv. 21 - mer., janv. 28

12:15 pm - 10:35 pm

SEA

HGH

19h 20m1 stop

3:55 pm - 7:12 am

HGH

SEA

30h 17m2 stops

$946Cathay Pacific

mar., juin 16 - lun., août 17

12:15 pm - 10:35 pm

SEA

HGH

19h 20m1 stop

3:55 pm - 10:35 am

HGH

SEA

33h 40m1 stop

$951Cathay Pacific

mar., juin 16 - lun., août 17

11:25 am - 1:30 pm

SEA

HGH

34h 05m1 stop

12:05 pm - 1:20 pm

HGH

SEA

17h 15m1 stop

$1,005Korean Air

mer., janv. 21 - mer., janv. 28

1:13 pm - 10:10 am

SEA

HGH

29h 57m2 stops

3:55 pm - 11:37 am

HGH

SEA

34h 42m2 stops

$1,032Cathay Pacific

mar., juin 16 - lun., août 17

6:03 am - 9:55 pm

SEA

HGH

23h 52m2 stops

3:40 pm - 8:05 am

HGH

SEA

32h 25m3 stops

$1,118Multiple Airlines

mer., janv. 21 - mer., janv. 28

11:05 pm - 1:40 pm

SEA

HGH

46h 35m2 stops

3:05 pm - 1:45 pm

HGH

SEA

14h 40m1 stop

$4,409Multiple Airlines

lun., janv. 19 - lun., janv. 26

Cathay Pacific flights from Seattle to Hangzhou

Our best Cathay Pacific deals on Seattle to Hangzhou flight tickets

Cathay Pacific

Jun 16

SEA12:15 pmSeattle/Tacoma Intl

19h 20m

1 stop

HGH10:35 pmHangzhou

Aug 17

HGH7:35 pmHangzhou

26h 32m

2 stops

SEA7:07 amSeattle/Tacoma Intl

$946

Find similar

Cathay Pacific

Jun 16

SEA12:15 pmSeattle/Tacoma Intl

19h 20m

1 stop

HGH10:35 pmHangzhou

Aug 17

HGH8:00 amHangzhou

17h 35m

1 stop

SEA10:35 amSeattle/Tacoma Intl

$951

Find similar

Cathay Pacific

Feb 5

SEA3:45 pmSeattle/Tacoma Intl

26h 25m

2 stops

HGH10:10 amHangzhou

Feb 12

HGH8:00 amHangzhou

21h 59m

2 stops

SEA1:59 pmSeattle/Tacoma Intl

$954

Find similar

Korean Air flights from Seattle to Hangzhou

Our best Korean Air deals on Seattle to Hangzhou flight tickets

Korean Air

Jan 21

SEA11:00 amSeattle/Tacoma Intl

34h 30m

1 stop

HGH1:30 pmHangzhou

Jan 28

HGH12:05 pmHangzhou

24h 31m

2 stops

SEA8:36 pmSeattle/Tacoma Intl

$916

Find similar

Korean Air

Jan 21

SEA2:02 pmSeattle/Tacoma Intl

31h 28m

2 stops

HGH1:30 pmHangzhou

Jan 28

HGH12:05 pmHangzhou

24h 31m

2 stops

SEA8:36 pmSeattle/Tacoma Intl

$921

Find similar

Korean Air

Jan 21

SEA11:25 amSeattle/Tacoma Intl

34h 05m

1 stop

HGH1:30 pmHangzhou

Jan 28

HGH12:05 pmHangzhou

17h 15m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$1,005

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mer. 1/21

2:02 pm-11:10 pm

2 stops41h 08m

Hangzhou

mer. 1/28

8:00 am-8:36 pm

2 stops28h 36m

$845

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mer. 1/21

11:45 pm-2:45 pm

1 stop23h 00m

Hangzhou

mer. 1/28

10:00 pm-3:05 pm

2 stops33h 05m

$848

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mer. 1/21

11:00 am-1:30 pm

1 stop34h 30m

Hangzhou

mer. 1/28

12:05 pm-8:36 pm

2 stops24h 31m

$916

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mer. 1/21

2:02 pm-1:30 pm

2 stops31h 28m

Hangzhou

mer. 1/28

12:05 pm-8:36 pm

2 stops24h 31m

$921

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mar. 6/16

12:15 pm-10:35 pm

1 stop19h 20m

Hangzhou

lun. 8/17

3:55 pm-7:12 am

2 stops30h 17m

$946

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mar. 6/16

12:15 pm-10:35 pm

1 stop19h 20m

Hangzhou

lun. 8/17

3:55 pm-10:35 am

1 stop33h 40m

$951

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mer. 1/21

11:25 am-1:30 pm

1 stop34h 05m

Hangzhou

mer. 1/28

12:05 pm-1:20 pm

1 stop17h 15m

$1,005

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mar. 6/16

1:13 pm-10:10 am

2 stops29h 57m

Hangzhou

lun. 8/17

3:55 pm-11:37 am

2 stops34h 42m

$1,032

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

mer. 1/21

6:03 am-9:55 pm

2 stops23h 52m

Hangzhou

mer. 1/28

3:40 pm-8:05 am

3 stops32h 25m

$1,118

SeattleHangzhou

SEA - HGH

SEAHGH

Seattle/Tacoma Intl

lun. 1/19

11:05 pm-1:40 pm

2 stops46h 35m

Hangzhou

lun. 1/26

3:05 pm-1:45 pm

1 stop14h 40m

$4,409

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

Fastest flight time	19h 20m
Direct flights	None

The fastest flight from Seattle to Hangzhou takes 19h 20m

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. 19h 20m 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 December 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 $843	Free Cancellation	Rating 8.2 59 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.