SEA - HGH

$814 Find Cheap Flights from Seattle to Hangzhou

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Hangzhou departing on 3/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Hangzhou

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Hangzhou, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Hangzhou, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$814
Hainan Airlines
Sat 3/7Sat 3/14
SEA - HGH • 1 stop
Cheapest one-way
Multiple Airlines
Thu 1/22
SEA - HGH • multi-stop
Top airlines
Hainan Airlines
Cheapest • from $814 (round-trip)
Hainan Airlines
Best reviews • 8.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Hangzhou!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Hangzhou (SEA-HGH)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Hangzhou that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Hangzhou

Sat, Mar 7 - Sat, Mar 14
Hainan Airlines Logo
10:00 am - 7:55 pm
SEA
-
HGH
17h 55m
1 stop
Hainan Airlines Logo
8:30 am - 9:00 am
HGH
-
SEA
15h 30m
1 stop
$814Hainan Airlines
Sun, Apr 5 - Thu, Apr 9
Asiana Airlines Logo
12:55 am - 1:45 pm
SEA
-
HGH
21h 50m
1 stop
Asiana Airlines Logo
3:10 pm - 2:55 pm
HGH
-
SEA
14h 45m
1 stop
$906Asiana Airlines
Wed, Feb 11 - Mon, Feb 23
Korean Air Logo
3:15 pm - 1:30 pm
SEA
-
HGH
30h 15m
2 stops
Korean Air Logo
2:40 pm - 9:00 am
HGH
-
SEA
34h 20m
1 stop
$911Korean Air
Wed, Feb 11 - Wed, Feb 25
Korean Air Logo
3:15 pm - 1:30 pm
SEA
-
HGH
30h 15m
2 stops
Korean Air Logo
12:05 pm - 11:25 pm
HGH
-
SEA
27h 20m
2 stops
$922Korean Air
Sat, Mar 7 - Sat, Mar 14
Multiple Airlines Logo
11:00 am - 11:45 pm
SEA
-
HGH
44h 45m
2 stops
Multiple Airlines Logo
8:30 am - 9:00 am
HGH
-
SEA
15h 30m
1 stop
$952Multiple Airlines
Mon, Feb 16 - Mon, Feb 23
Multiple Airlines Logo
7:55 pm - 2:30 pm
SEA
-
HGH
26h 35m
2 stops
Multiple Airlines Logo
3:45 pm - 8:47 pm
HGH
-
SEA
21h 02m
2 stops
$968Multiple Airlines
Wed, Feb 11 - Fri, Feb 20
Korean Air Logo
12:25 pm - 1:30 pm
SEA
-
HGH
33h 05m
2 stops
Korean Air Logo
2:40 pm - 9:51 pm
HGH
-
SEA
23h 11m
2 stops
$972Korean Air
Mon, Apr 6 - Thu, Apr 9
Cathay Pacific Logo
11:50 am - 10:35 pm
SEA
-
HGH
19h 45m
1 stop
Cathay Pacific Logo
8:00 am - 7:03 pm
HGH
-
SEA
26h 03m
2 stops
$982Cathay Pacific
Mon, Feb 16 - Tue, Feb 24
Multiple Airlines Logo
12:10 am - 6:15 pm
SEA
-
HGH
26h 05m
1 stop
Multiple Airlines Logo
3:45 pm - 5:30 pm
HGH
-
SEA
17h 45m
2 stops
$995Multiple Airlines
Sat, Mar 28 - Tue, Apr 14
Cathay Pacific Logo
7:03 am - 10:10 am
SEA
-
HGH
36h 07m
2 stops
Cathay Pacific Logo
7:35 pm - 7:02 am
HGH
-
SEA
26h 27m
2 stops
$1,001Cathay Pacific
Booking Insights

KAYAK's insights & trends for Seattle to Hangzhou flights

Get data-powered insights and trends into flights from Seattle to Hangzhou to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Seattle to Hangzhou?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Seattle to Hangzhou were found on Hainan Airlines ($814) and Asiana Airlines ($906).

Good to know

Cheapest flight$814
Flight from Seattle to Hangzhou

When to book flights from Seattle to Hangzhou

Are your dates flexible? Find out the best times to travel from Seattle to Hangzhou based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Hangzhou

  • What is the cheapest flight from Seattle to Hangzhou?

    In the last 3 days, the lowest price for a flight from Seattle to Hangzhou was $814 for a round-trip ticket.

  • Do I need a passport to fly between Seattle and Hangzhou?

    Yes, you’ll need a passport to travel to Hangzhou from Seattle.

  • Which aircraft models fly most regularly from Seattle to Hangzhou?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Hangzhou?

    oneworld is the only airline alliance operating flights between Seattle and Hangzhou.

  • Which is the best airline for flights from Seattle to Hangzhou, Hainan Airlines or Cathay Pacific?

    The two airlines most popular with KAYAK users for flights from Seattle to Hangzhou are Hainan Airlines and Cathay Pacific. With an average price for the route of $974 and an overall rating of 8.2, Hainan Airlines is the most popular choice. Cathay Pacific is also a great choice for the route, with an average price of $887 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Seattle to Hangzhou?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Hangzhou.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Hangzhou?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Hangzhou from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Hangzhou?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Hangzhou with an airline and back to Seattle with another airline. Booking your flights between Seattle and HGH can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Hangzhou?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Hangzhou from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Seattle to Hangzhou

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Hangzhou. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Hangzhou? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Hainan AirlinesOverall score based on 62 reviews
8.1Comfort
8.3Food
7.7Entertainment
8.5Boarding
8.9Crew
Airline reviews

My first time flying Hainan Airlines. Boarding process was easy and quick. Staff was friendly and helpful. Food was a simple, hot meal which we don’t see much any more on short flights in the US. Only water, coffee or tea to drink but it was only a two hour flight. Overall pleasing experience.

10.0 ExcellentAnonymous, Jan 2026
KWL - XIY
Read more Hainan Airlines reviews

My first time flying Hainan Airlines. Boarding process was easy and quick. Staff was friendly and helpful. Food was a simple, hot meal which we don’t see much any more on short flights in the US. Only water, coffee or tea to drink but it was only a two hour flight. Overall pleasing experience.

The absolute worst experience I’ve ever had flying. I am a regular flyer and was transferring from Seoul to Beijing to the USA. I was told the companies were partnered so no need to pick up my baggage, I got through eventually after a terribly confusing airport and unhelpful staff, had issues with the check in counter where they didn’t understand my baggage tag from the previous airline and that my bag needed transferring (which as a company partnership they should have communication like this) and then I got through extremely stressful security with multiple stops and the plane was poor quality (same exact quality as my 1.5 hour flight there) for a 16 hour flight with poor food quality, slow trash service, and less than 15 movies total for flight options I was absolutely over it. My only good thing was I was lucky enough to be sitting by myself in a row

Great although I believe they are able to redistuibute the passangers in a more comfortable way if the flight is not full dor such long flights. Unless the seats are paid for, of coruse.

Good flight, on time. The aircraft was old and the seats lost their shapes. Food was just acceptable.

Two hours delayed departure ! Lost one of our luggage! Two days later found the luggage, again waiting for more than two hours to get the lost luggage because locked at other airline office.

Hainan Airlines was amongst the best. It's sad to see her becoming just mediocre. I recommended her as outstanding. I won't recommend her again.

Such amazing service! Wonderful flight attendants who actually care about the passengers and go out of their way to make our journey easier!!

They asked how much cash i have . I said no cash they said bring cash from atm . Why they even care about my cash.

Flight was scheduled to depart at 1210 hrs. It was delayed 1 hour 20 minutes (maybe for air traffic control reasons). The seats were worn out and very uncomfortable. Lunch was typical for airline. Flight free were friendly.

I didn't have much experience with Cathay Pacific airlines because of delay and missed connections, the bulk of the trip was on Japan Airlines.

Flight delayed first from bad weather, then after boarding there was a problem with the plane. We had to get off and onto another plane...connections were missed and the trip took an additional 10 hours!! Pre-paid seatting was not honored due ro last minute carrier changes. Most of the trip was on Japan Airline.

Vegetarian options should be included with every meal. Even just simple steamed vegetables and whole grains would capture a wide audience.

Extensive delays, poor organization to board people, as it felt like chaos to get inside of the plane. No lines, everyone gathering together like a mayhem, very confusing. Passengers out of hand and rude, which is not the airlines fault. However, there should be rules, e.g., not letting one passenger take 2+ spots in the overhead bin.

Crew and food were great in-flight. We had a 2 hour delay, no communication, and just got left in a limbo. The crew arrived late and they were running checkouts on the plane (which is important, but why not doing it earlier?) Cathay did nothing to about the delay, and a lot of people missed their connection flights. I had to run and got stuck at checkpoint, which made my entire trip very unpleasant. Got to my gate 5 mins prior to them closing it.

My flight was suppose to be at 7:45pm to fly but it didnt fly out until 8:55 to dallas so then all of my other flights was late and delay ihad to wait at the airport for extra 14 hours to be able to get on a different plane

There were delays at boarding and landing. These events resulted in a tight transfer time in HK. Poor signage for transfers. Finally, lost luggage at final destination.

It was good. The planes needed to be updated though, they were dated and the entertainment systems were old. Service was amazing. The pre-booked meals were lacklustre.

Super delayed. Unnecessary. Need more competent people doing logistics to keep things moving on time. Totally unacceptable.

Flew from lax economy on cathay 777. Seat configuration 3-4-3. When the forward seat reclines it feels like someone is leaning forward and staring you. If you are slightly big tray tables will touch your abdomen even with seats upright. AVOID this above 777 configuration at all cost for a long flight. However their Airbus 350 3-3-3 configuration felt spacious and Seats wider.

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

Information on your arrival and departure airports