Cheap flights from Shanghai to Seattle from $427

In general, October is the cheapest month to fly from Shanghai to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $772. If you don’t want to visit Seattle in October, then you should wait until December to fly from Shanghai, when ticket prices are also cheap, with an average price of $870.

On average, the least expensive day to fly to Seattle from Shanghai is on a Saturday. momondo users have found tickets for Saturday departures for as low as $953. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from Shanghai because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,281.

Fly from Shanghai Pu Dong to Seattle/Tacoma Intl for the best Shanghai - Seattle/Tacoma Intl flight prices

There are 3 cabin classes available to choose from on Shanghai to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Hainan Airlines, Cathay Pacific, and Delta are the most popular carriers operating from Shanghai to Seattle/Tacoma Intl

Delta, Asiana Airlines and Korean Air are the top three most popular airlines that fly to Seattle from Shanghai 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 Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Historically, on average around 37% of flights between Shanghai and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 221 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 21% of their flights experiencing any sort of delay.

As of September 2026, 1 flights take off from Shanghai and land in Seattle each day. The most common flight departure time for this route is 5:00PM, with 100% of daily flights taking off in the afternoon.

The number of flights available between Shanghai and Seattle is 7 per week as of September 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.