$510 Cheap Flights from Taipei (TSA) to Seattle (SEA)

View $510 flight on Sat, Dec 20, 2025Opens in a new window

Popular airlines from Songshan Airport (TSA) to Seattle-Tacoma International Airport (SEA)

Cheap Flights from Taipei to Seattle (TSA-SEA)

Prices were available within the past 7 days and start at $510 for one-way flights and $833 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All Nippon Airways
Wed, Dec 3 - Sat, Dec 6
TSA
Taipei
SEA
Seattle
$833 Roundtrip, found 2 days ago
$833
Roundtrip
found 2 days ago
Select All Nippon Airways flight, departing Wed, Dec 3 from Taipei to Seattle, returning Sat, Dec 6, priced at $833 found 2 days ago
All Nippon Airways
Sat, Dec 13 - Thu, Jan 8
TSA
Taipei
SEA
Seattle
$840 Roundtrip, found 10 hours ago
$840
Roundtrip
found 10 hours ago
Select All Nippon Airways flight, departing Sat, Dec 13 from Taipei to Seattle, returning Thu, Jan 8, priced at $840 found 10 hours ago
All Nippon Airways
Sat, Dec 13 - Sat, Jan 3
TSA
Taipei
SEA
Seattle
$841 Roundtrip, found 2 days ago
$841
Roundtrip
found 2 days ago
Select All Nippon Airways flight, departing Sat, Dec 13 from Taipei to Seattle, returning Sat, Jan 3, priced at $841 found 2 days ago
All Nippon Airways
Thu, Dec 11 - Wed, Dec 31
TSA
Taipei
SEA
Seattle
$843 Roundtrip, found 4 days ago
$843
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Thu, Dec 11 from Taipei to Seattle, returning Wed, Dec 31, priced at $843 found 4 days ago
All Nippon Airways
Thu, Dec 4 - Mon, Apr 6
TSA
Taipei
SEA
Seattle
$845 Roundtrip, found 5 days ago
$845
Roundtrip
found 5 days ago
Select All Nippon Airways flight, departing Thu, Dec 4 from Taipei to Seattle, returning Mon, Apr 6, priced at $845 found 5 days ago
All Nippon Airways
Mon, Dec 15 - Mon, Jun 15
TSA
Taipei
SEA
Seattle
$848 Roundtrip, found 3 hours ago
$848
Roundtrip
found 3 hours ago
Select All Nippon Airways flight, departing Mon, Dec 15 from Taipei to Seattle, returning Mon, Jun 15, priced at $848 found 3 hours ago
All Nippon Airways
Tue, Nov 18 - Mon, Dec 1
TSA
Taipei
SEA
Seattle
$849 Roundtrip, found 1 day ago
$849
Roundtrip
found 1 day ago
Select All Nippon Airways flight, departing Tue, Nov 18 from Taipei to Seattle, returning Mon, Dec 1, priced at $849 found 1 day ago
All Nippon Airways
Thu, Nov 20 - Thu, Dec 4
TSA
Taipei
SEA
Seattle
$853 Roundtrip, found 5 days ago
$853
Roundtrip
found 5 days ago
Select All Nippon Airways flight, departing Thu, Nov 20 from Taipei to Seattle, returning Thu, Dec 4, priced at $853 found 5 days ago
EVA Airways
Wed, Dec 17 - Fri, Jan 2
TSA
Taipei
SEA
Seattle
$917 Roundtrip, found 3 days ago
$917
Roundtrip
found 3 days ago
Select EVA Airways flight, departing Wed, Dec 17 from Taipei to Seattle, returning Fri, Jan 2, priced at $917 found 3 days ago
Japan Airlines
Mon, Dec 15 - Tue, Dec 30
TSA
Taipei
SEA
Seattle
$1,273 Roundtrip, found 3 days ago
$1,273
Roundtrip
found 3 days ago
Select Japan Airlines flight, departing Mon, Dec 15 from Taipei to Seattle, returning Tue, Dec 30, priced at $1,273 found 3 days ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $916
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $916

Frequently asked questions

How much does a flight from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA) cost?
Grab a cheap one-way flight from $510 or cheap return flight from $833 from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest month to fly from TSA to SEA is December, when there's less demand. Off-peak season is usually when better flight deals are available between these airports.
Which airlines fly direct from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA)?
You can't take a direct flight from Taipei (TSA-Songshan) to Seattle - Tacoma Intl. Airport (SEA). However, you can seamlessly travel to Seattle without any layovers by leaving from Taoyuan Intl. Airport (TPE).
What is the cheapest airline that flies from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline that'll fly you from TSA to SEA, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA)?
Direct flights from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from TSA to SEA?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a range of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA)?
Book a flight from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until just before your departure to book a flight from TSA to SEA often results in higher prices. While you might find some last-minute deals, they aren't always guaranteed. Be flexible with your itinerary for the best chance of landing a bargain.
Is it cheaper to book a TSA to SEA flight and hotel package?
Securing a TSA to SEA flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Pick from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Songshan Airport (TSA) to Seattle - Tacoma Intl. Airport (SEA)?
If you booked your TSA to SEA flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Origin airport
Songshan
Destination airport
Seattle - Tacoma Intl.
Airlines serving
All Nippon Airways, Japan Airlines
Roundtrip price
$833
Distance
6051 mi

Book with confidence

Taipei to Seattle Flights

The cheapest times to fly from Taipei to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Taipei to Seattle are during the month of December. You can find some of the cheapest flights from Taipei to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Taipei to Seattle

Sunday is one of the best days to book for cheap flights from Taipei to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Taipei to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Taipei to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $510 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Taipei to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Taipei to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Taipei to Seattle Flights

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*Available to One Key members.