Cheap flights from Seattle to Taipei City from $366

The cheapest month to fly to Taipei City from Seattle is in January. Flight prices, which tend to average around $663, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Taipei City from Seattle during September instead. Flights to Taipei City in September, while not as cheap as those in January, still average around $703.

The cheapest day to depart from Seattle to Taipei City is on a Monday when prices can be found for as low as $854. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Taipei City on Saturday is $980.

In the afternoon is the cheapest time of day to fly from Seattle to Taipei City when you can find flight prices for as low as $738. Flying to Taipei City in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Taipei City is in the evening when prices are around $909.

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

You are more likely to see cheaper flights to Taipei City from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Taipei City for around $873 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Taipei City from Seattle for as low as $739 on momondo.

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Taipei City flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Delta, United Airlines, and Korean Air are the most popular carriers operating from Seattle/Tacoma Intl to Taipei City

STARLUX Airlines, EVA Air and Delta are the top three most popular airlines that fly to Taipei City from Seattle according to our data. STARLUX Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Taipei City. Keep in mind that there are 7 different airlines that fly to Taipei City on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between Seattle and Taipei City have experienced a delay on any given week. The average delay length over the past 12 months has been 182 minutes.

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

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

According to our data, STARLUX Airlines have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

As of April 2026, 6 flights take off from Seattle and land in Taipei City each day. The most common flight departure time for this route is 1:00AM, with 86% of daily flights taking off in the morning.

The number of flights available between Seattle and Taipei City is 44 per week as of April 2026. The most frequent departure day is Wed, with 18% of weekly flights leaving on this day.