Cheap flights from Taiwan to Seattle from $399

In general, August is the cheapest month to fly from Taiwan to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $367. If you don’t want to visit Seattle in August, then you should wait until July to fly from Taiwan, when ticket prices are also cheap, with an average price of $367.

On average, the least expensive day to fly to Seattle from Taiwan is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $830. 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 Taiwan because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $946.

Flying to Seattle from Taiwan in the evening is the least expensive time of day to depart. momondo users have found prices as low as $873 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $896. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Taipei City Taiwan Taoyuan Intl to Seattle/Tacoma Intl for the best Taiwan - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Taiwan when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $831 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Taiwan for as low as $761 on momondo.

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

United Airlines and Cathay Pacific are the most popular carriers operating from Taiwan to Seattle/Tacoma Intl

Delta, EVA Air and STARLUX Airlines are the top three most popular airlines that fly to Seattle from Taiwan according to our data. Delta is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% of flights between Taiwan and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 125 minutes.

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

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Tuesday 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 10% of their flights experiencing any sort of delay.

The number of flights available between Taiwan and Seattle is 6 per day as of June 2026. The most frequent departure time is 11:00PM, with 88% of daily flights leaving in the evening.

As of June 2026, 45 flights take off from Taiwan and land in Seattle each week. The most common flight departure day for this route is Sat, with 20% of weekly flights taking off on this day.