The sector is held by Cathay Pacific.
Airport pair · hand carry reference
SEA Seattle to HKG Hong Kong
Seattle Tacoma International, the United States, to Hong Kong International, Hong Kong. Computed from the scheduled network held on 2026-09-07.
- Nonstop
- 5 times a week
- Great circle
- 10,442 km
- Block, estimated
- 13h 05m
- Door to door
- 19h 50m
What SEA to HKG looks like
The SEA to HKG sector, the carriers on it and the flying time, before anything is promised to anybody.
Seattle SEA to Hong Kong HKG is an ultra long sector of 10,442 km by great circle, flown nonstop 5 times a week.
At the cruise speed this site models for 10,442 km, 880 km an hour, and thirty minutes of taxi at the two ends, the flight blocks at about 13h 05m.
Seattle SEA is a large airport in the network held here, 145 scheduled destinations and 717.9 departures a day. Hong Kong HKG has 144 destinations and 478.9 departures a day.
Hong Kong 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 HKG from the scheduled route statistics, both directions, with the operating carriers named.
| Direction | Flights a day | Flights a week | Operated by |
|---|---|---|---|
| SEA to HKG | 0.71 | 5 | Cathay Pacific |
| HKG to SEA | 0.71 | 5 | Cathay Pacific |
One carrier holds the sector, Cathay Pacific, so a cancellation has no second nonstop behind it and the connections below stop being theoretical.
Between them the two directions put about 9.9 departures a week on SEA to HKG, 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 13h 05m block time on SEA to HKG. 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 HKG in the air, estimated | 785 min | 17h 35m |
| Formalities at HKG | 90 min | 19h 05m |
| Delivery run in Hong Kong | 45 min | 19h 50m |
| Door to door | 1,190 min | 19h 50m |
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 HKG is 19h 50m.
A courier who leaves Seattle at 09:00 local is on the ground in Hong Kong at about 14:05 local and at the door by 16:20 the following day.
Working backwards from a six in the evening handover in Hong Kong, 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 50m 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. 30 of them join SEA to HKG.
| Connecting at | SEA to hub, flights a day | Hub to HKG, flights a day | Track, km | Estimated, gate to gate |
|---|---|---|---|---|
| Anchorage ANC | 25.57 | 4 | 10,491 | 14h 48m |
| Vancouver YVR | 19.71 | 5.43 | 10,474 | 14h 55m |
| Seoul ICN | 4.86 | 23.86 | 10,443 | 14h 59m |
| Taipei TPE | 5.71 | 41.86 | 10,563 | 15h 02m |
| Shanghai PVG | 1.14 | 23 | 10,444 | 15h 10m |
| Tokyo HND | 2.29 | 9 | 10,615 | 15h 14m |
30 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 times a day.
Through ANC the routing covers 10,491 km against the 10,442 km nonstop track and takes about 14h 48m 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 43m 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 55m and Seoul ICN at 14h 59m 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 Hong Kong, Macau MFM is 38 km away by great circle and carries 39 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.
Hong Kong HKG, night operations: Operates around the clock. Night departures to Europe and the Gulf are routine.
Industry within reach of the two ends
Public manufacturing and research sites whose logistics run through SEA or HKG. 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.
Plan Seattle to Hong Kong 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 HKG 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 HKG airport entry
- Hand carry into the United States
- Hand carry into Hong Kong
- The written lane, Dubai to Seattle
- The written lane, Seattle to Nagoya
- The written lane, Abu Dhabi to Hong Kong
- The route calculator
More pairs through SEA and HKG: Hong Kong to Taipei, Seoul to Hong Kong, Paris to Hong Kong, Hong Kong to Shanghai, Bangkok to Hong Kong, San Francisco to Hong Kong, Beijing to Hong Kong, Amsterdam to Hong Kong.