The sector is held by China Airlines, Delta Air Lines, EVA Air and Starlux Airlines.
Airport pair · hand carry reference
SEA Seattle to TPE Taipei
Seattle Tacoma International, the United States, to Taoyuan International, Taiwan. Computed from the scheduled network held on 2026-09-07.
- Nonstop
- 5.7 times a day
- Great circle
- 9,757 km
- Block, estimated
- 12h 15m
- Door to door
- 19h 00m
What SEA to TPE looks like
The SEA to TPE sector, the carriers on it and the flying time, before anything is promised to anybody.
Seattle SEA to Taipei TPE is an ultra long sector of 9,757 km by great circle, flown nonstop 5.7 times a day.
At the cruise speed this site models for 9,757 km, 880 km an hour, and thirty minutes of taxi at the two ends, the flight blocks at about 12h 15m.
Seattle SEA is a large airport in the network held here, 145 scheduled destinations and 717.9 departures a day. Taipei TPE has 108 destinations and 382.9 departures a day.
Taipei runs 16 hours ahead of Seattle in January and 15 hours ahead in July, because the two ends do not change their clocks together.
The pair sits between the Americas and Asia Pacific, a corridor where the site already publishes 16 written lanes that go into customs and ground detail this page does not.
Who flies the sector, and how often
Average daily frequencies on SEA to TPE from the scheduled route statistics, both directions, with the operating carriers named.
| Direction | Flights a day | Flights a week | Operated by |
|---|---|---|---|
| SEA to TPE | 5.71 | 40 | China Airlines, Delta Air Lines, EVA Air, Starlux Airlines |
| TPE to SEA | 4.71 | 33 | China Airlines, Delta Air Lines, EVA Air, Starlux Airlines |
4 carriers are recorded on the sector, so a missed departure is normally a rebooking rather than a lost day.
At 5.7 times a day there is usually another departure within a few hours, which is what makes a same day booking on this pair realistic.
Between them the two directions put about 72.9 departures a week on SEA to TPE, which is the number that decides whether a seat can be found today or on Thursday.
The clock from collection to signature
The same ground timings the route calculator starts from, applied to the 12h 15m block time on SEA to TPE. Change any of them in the tool further down and the total moves with them.
| Stage | Allowed | Elapsed |
|---|---|---|
| Collection and the run to SEA | 90 min | 1h 30m |
| At SEA before departure | 180 min | 4h 30m |
| SEA to TPE in the air, estimated | 735 min | 16h 45m |
| Formalities at TPE | 90 min | 18h 15m |
| Delivery run in Taipei | 45 min | 19h 00m |
| Door to door | 1,140 min | 19h 00m |
On the desk standard ground timings, ninety minutes to collect and reach the airport, three hours at the airport before departure, ninety minutes of arrival formalities and a forty five minute delivery run, the door to door figure for SEA to TPE is 19h 00m.
A courier who leaves Seattle at 09:00 local is on the ground in Taipei at about 13:15 local and at the door by 15:30 the following day.
Working backwards from a six in the evening handover in Taipei, nothing leaving Seattle inside a normal working day arrives in time, so this pair is an overnight and a next morning delivery rather than a same day one.
At 19h 00m the mission is past the sixteen hour duty day a single courier is planned against, so it is quoted with a rest at the far end or with a second courier, and never as a turnaround.
When the nonstop does not work
Every airport that joins the two ends, ranked by when they land, among the ones whose weaker leg is dependable enough to plan on. Connection time is allowed for the size of the hub. 28 of them join SEA to TPE.
| Connecting at | SEA to hub, flights a day | Hub to TPE, flights a day | Track, km | Estimated, gate to gate |
|---|---|---|---|---|
| Anchorage ANC | 25.57 | 4.71 | 9,845 | 14h 01m |
| Vancouver YVR | 19.71 | 2.29 | 9,797 | 14h 06m |
| Seoul ICN | 4.86 | 14.14 | 9,837 | 14h 12m |
| Tokyo NRT | 2.29 | 25.57 | 9,837 | 14h 15m |
| Tokyo HND | 2.29 | 2.29 | 9,834 | 14h 15m |
| Shanghai PVG | 1.14 | 11.29 | 9,865 | 14h 34m |
With 5.7 times a day on the nonstop, a connection here is a disruption plan rather than a routing, and it is listed because a closed runway or a cancellation wave is exactly when nobody has time to work it out.
28 airports connect the two ends on the scheduled network held here. The quickest of the dependable ones is Anchorage ANC, where the weaker of the two legs still runs 4.7 times a day.
Through ANC the routing covers 9,845 km against the 9,757 km nonstop track and takes about 14h 01m in the air and on the ground at the hub, allowing 60 minutes to connect at an airport of that size.
That is only 1h 46m more than the nonstop, which is close enough that a connection is worth taking when the nonstop is full or badly timed.
Behind it, Vancouver YVR at 14h 06m and Seoul ICN at 14h 12m hold the same connection, so a booking has three hubs to try before it has to wait for the nonstop.
If nothing suitable leaves Seattle, Victoria YYJ is 157 km away by great circle and carries 22 scheduled destinations of its own, which is usually a shorter road transfer than a lost day.
If nothing suitable leaves Taipei, Fuzhou FOC is 184 km away by great circle and carries 80 scheduled destinations of its own, which is usually a shorter road transfer than a lost day.
Restricted hours at either end
Widely documented operating restrictions, checked 2026-09-07. Exemptions and seasonal variations exist, so confirm with the carrier before relying on any of them.
Taipei TPE, night operations: Operates around the clock.
Industry within reach of the two ends
Public manufacturing and research sites whose logistics run through SEA or TPE. Listed as industrial geography, not as customers of anyone.
- Boeing, Everett and RentonWidebody and 737 final assembly. A European supplier base and an American line, eight time zones apart. Logistics through Seattle SEA.
- TSMC, HsinchuThe largest contract chip manufacturer in the world. European lithography, Taiwanese fabs, and a clock that runs in fab hours. Logistics through Taipei TPE.
Plan Seattle to Taipei yourself
The same tool the dispatchers use, open to anybody and free. It is loaded with this pair already. Change either end, add a stopover or a preferred airline, and it works out the connection, the transit and the door to door clock, with the real departures underneath. Put it on your own site if it is useful to you.
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Restrictions
Where this came from, and where to look next
- Carriers and frequencies: AeroDataBox scheduled route statistics, retrieved 2026-09-07. Average daily flights, not a timetable.
- Distances: great circle from published coordinates. They read short against a flown track, which is why the block time above applies a factor to them.
- Block and connection times: the same model the route calculator lower down this page runs, at the same rounding.
- Restrictions: the airport notes file, checked 2026-09-07.
- Industrial sites: public company information. Nothing here says or implies that any company named is a customer of any courier operator.
Who publishes this. OnBoard Courier is a placement desk in Dubai. An assignment is carried out by a vetted partner operator, with the desk as the single point of contact from the quote to the signature. This page exists because our own dispatchers need the answer for SEA to TPE in the twenty minutes before a promise is made, and a reference only one operator can read is not a reference. Free to read, quote and cite. Found an error? Tell us and we will correct it.
If you need something moved rather than looked up, the desk prices a hand carry in fifteen minutes.
- The SEA airport entry
- The TPE airport entry
- Hand carry into the United States
- Hand carry into Taiwan
- The written lane, Dubai to Seattle
- The written lane, Seattle to Nagoya
- The written lane, Amsterdam to Taipei
- The route calculator
More pairs through SEA and TPE: San Francisco to Seattle, Atlanta to Seattle, London to Seattle, Seattle to Boston, Seattle to Los Angeles, Detroit to Seattle, Seattle to Chicago, Seattle to Seoul.