The cheapest times to fly from SEA to HSN are

  • January 15th to March 18th
  • June 25th to July 22nd
  • October 8th to December 9th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SEA to HSN is early to mid October. Prices can be as high as $9672 for Friday flights during late March, or as low as $797 for Tuesday flights around early to mid October.


When to Fly to Zhoushan

Flying from Seattle, WA (SEA) to Zhoushan (HSN) will usually cost between $985 to $8216 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid October with an average ticket price of $1133. Due to high demand the most expensive time to fly is late March, with an average price of $5093. Planning your trip to low-cost times can easily save you $3960 on economy flights and even more on first-class flights. Generally, any price below $2395 can be considered a good price for a round-trip SEA to HSN flight.

See below for a graph of average weekly prices for the SEA to HSN route. All prices are for round-trip tickets in USD.

SEA to HSN Flight Prices

Compared to other flights, the SEA to HSN flight is more expensive than the average and costs more than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $0.26, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to Zhoushan, and Sundays are the most expensive days to return to Seattle. Selecting flights on the least expensive days could save you up to $2435 (43%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1883. Return trip prices are from the HSN to SEA flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SEA to HSN can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 11 hour 20 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from SEA to HSN while comparing.

Destination alternative #1: Pudong Airport (PVG) in Shanghai

  • 90 miles (145 km) away from HSN
  • Usually 76.53% less expensive than HSN
  • Nonstop flights available

See SEA to PVG flights

Destination alternative #2: Hongqiao International Airport (SHA) in Shanghai

  • 107 miles (172 km) away from HSN
  • Usually 71.04% less expensive than HSN
  • 1-layover flights available

See SEA to SHA flights

Destination alternative #3: Xiaoshan Airport (HGH) in Hangzhou

  • 117 miles (188 km) away from HSN
  • Usually 65.66% less expensive than HSN
  • 1-layover flights available

See SEA to HGH flights

Destination alternative #4: Lishe Airport (NGB) in Ningbo

  • 54 miles (87 km) away from HSN
  • Usually 62.09% less expensive than HSN
  • 1-layover flights available

See SEA to NGB flights


Flight Hacking SEA to HSN

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SEA to HSN — but Champion Traveler does!

Hack #1: Los Angeles, CA (SEA > LAX > HSN)

  • Price for both tickets: $917
  • Average savings: $1478 (61.71%)

See SEA to LAX flights

Hack #2: Beijing (SEA > PEK > HSN)

  • Price for both tickets: $1366
  • Average savings: $1029 (42.96%)

See SEA to PEK flights

Hack #3: Xiamen (SEA > XMN > HSN)

  • Price for both tickets: $1451
  • Average savings: $944 (39.42%)

See SEA to XMN flights


Flight Questions Answered

Still have questions about flying from SEA to HSN? We’ve got answers.

Which airlines fly this route?

You can find 13 major airlines flying this route most often: ANA, Asiana, Cathay Pacific, China Eastern, China Southern, Delta, EVA Air, Hainan, JAL, Shandong, Shanghai Airlines, Shenzhen, Xiamen, and potentially more during busy seasons.

How far away is it from Zhoushan Airport to Seattle/Tacoma International Airport?

The distance between the two airports is roughly 5753 miles or 9259 kilometers.

How long does it take to fly from SEA to HSN?

The real-world flight time for a nonstop SEA to HSN flight is about 11 hour 20 minutes.

How many flights go between Seattle, WA and Zhoushan?

It depends on the day of the week and the date, but a typical day might have around 13 available flights from SEA to HSN.


Airport Location Info


Departing Airport

Origination code SEA
Origination airport name Seattle/Tacoma International Airport
City Seattle, WA
Country the United States
Latitude 47.5
Longitude -122.3

Return Airport

Destination code HSN
Destination airport name Zhoushan Airport
City Zhoushan
Country China
Latitude 29.9
Longitude 122.4


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.