
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $625 (Richmond) |
One-way from | $431 (Booking.com) |
Popular in | July |
Cheapest in | April |
Average price | $706 |
Good round-trip deal | $735 or less |
Good one-way deal | $437 or less |
Fly from
Fly to
Route
Depart
Return
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Thu 9/24
9:50 am-6:00 am
Nonstop11h 10m
Seattle/Tacoma Intl
Sat 10/3
12:35 pm-12:10 pm
1 stop32h 35m
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Tue 9/1
1:20 pm-1:37 pm
1 stop15h 17m
Seattle/Tacoma Intl
Tue 9/8
1:00 pm-12:10 pm
1 stop32h 10m
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Wed 6/3
7:55 am-1:25 pm
1 stop20h 30m
Seattle/Tacoma Intl
Mon 6/8
4:20 pm-7:55 pm
Nonstop12h 35m
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Sun 5/10
9:50 am-1:12 am
1 stop30h 22m
Seattle/Tacoma Intl
Mon 5/25
5:06 pm-6:45 pm
2 stops34h 39m
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Fri 6/12
6:55 pm-11:00 am
1 stop31h 05m
Seattle/Tacoma Intl
Tue 6/16
4:20 pm-7:55 pm
Nonstop12h 35m
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Sun 5/10
9:55 am-6:00 am
Nonstop11h 05m
Seattle/Tacoma Intl
Wed 5/20
3:55 pm-7:55 pm
Nonstop13h 00m
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Wed 6/10
6:55 pm-11:00 am
1 stop31h 05m
Seattle/Tacoma Intl
Wed 6/17
4:20 pm-7:55 pm
Nonstop12h 35m
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Mon 7/6
9:50 am-6:47 pm
1 stop23h 57m
Seattle/Tacoma Intl
Sat 7/18
10:29 am-6:45 pm
1 stop17h 16m
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Mon 6/1
1:20 pm-4:51 pm
2 stops42h 31m
Seattle/Tacoma Intl
Mon 6/8
1:05 pm-12:10 pm
1 stop32h 05m
Taipei CitySeattle
TPE - SEA
TPESEA
Taipei City Taiwan Taoyuan Intl
Thu 7/16
9:50 am-1:29 am
1 stop30h 39m
Seattle/Tacoma Intl
Fri 7/31
8:45 am-6:45 pm
1 stop19h 00m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
The best time to book flights from Taipei City Taiwan Taoyuan Intl Airport to Seattle is 15 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, April is the cheapest month in which you can book a flight from Taipei City Taiwan Taoyuan Intl Airport to Seattle (average of $706). Flying from Taipei City Taiwan Taoyuan Intl Airport to Seattle in July is currently the most expensive (average of $1,126). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from Taipei City Taiwan Taoyuan Intl Airport to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
About 16% of weekly flights between Taipei City and Seattle have experienced delays in the past year, with the average delay time being 121 minutes.
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Wednesday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Over the last year, STARLUX Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.
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ember j,Apr 2026
TPE - ONT
Comfort
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ember j,Apr 2026
TPE - ONT
Comfort
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ember j,Apr 2026
TPE - ONT
Comfort
Boarding
Entertainment
Crew
Overall
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ember j,Apr 2026
TPE - ONT
Comfort
Boarding
Entertainment
Crew
Overall
Food
Reviews
ember j,Apr 2026
TPE - ONT
Comfort
Boarding
Entertainment
Crew
Overall
Food
Reviews
ember j,Apr 2026
TPE - ONT
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$365 | Average$780 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$542 | Average$671 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$683 | Average$867 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$717 | Average$800 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$753 | Average$826 | FlexibilityNo cancel fee | On-timeN/A |