The sector is held by Alaska Airlines, American Airlines, China Airlines and Delta Air Lines.
Airport pair · hand carry reference
MIA Miami to SEA Seattle
Miami International, the United States, to Seattle Tacoma International, the United States. Computed from the scheduled network held on 2026-09-07.
- Nonstop
- 4 times a day
- Great circle
- 4,379 km
- Block, estimated
- 5h 46m
- Door to door
- 12h 31m
What MIA to SEA looks like
The MIA to SEA sector, the carriers on it and the flying time, before anything is promised to anybody.
Miami MIA to Seattle SEA is a long haul sector of 4,379 km by great circle, flown nonstop 4 times a day.
At the cruise speed this site models for 4,379 km, 880 km an hour, and thirty minutes of taxi at the two ends, the flight blocks at about 5h 46m.
Miami MIA is a major hub in the network held here, 230 scheduled destinations and 592.1 departures a day. Seattle SEA has 145 destinations and 717.9 departures a day.
Seattle is 3 hours behind of Miami all year.
The pair sits inside the Americas, a corridor where the site already publishes 13 written lanes that go into customs and ground detail this page does not.
Who flies the sector, and how often
Average daily frequencies on MIA to SEA from the scheduled route statistics, both directions, with the operating carriers named.
| Direction | Flights a day | Flights a week | Operated by |
|---|---|---|---|
| MIA to SEA | 4 | 28 | Alaska Airlines, American Airlines, China Airlines, Delta Air Lines |
| SEA to MIA | 3.43 | 24 | Alaska Airlines, American Airlines, Delta Air Lines |
4 carriers are recorded on the sector, so a missed departure is normally a rebooking rather than a lost day.
At 4 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 52 departures a week on MIA to SEA, 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 5h 46m block time on MIA to SEA. Change any of them in the tool further down and the total moves with them.
| Stage | Allowed | Elapsed |
|---|---|---|
| Collection and the run to MIA | 90 min | 1h 30m |
| At MIA before departure | 180 min | 4h 30m |
| MIA to SEA in the air, estimated | 346 min | 10h 16m |
| Formalities at SEA | 90 min | 11h 46m |
| Delivery run in Seattle | 45 min | 12h 31m |
| Door to door | 751 min | 12h 31m |
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 MIA to SEA is 12h 31m.
A courier who leaves Miami at 09:00 local is on the ground in Seattle at about 11:46 local and at the door by 14:01 the same day.
Working backwards from a six in the evening handover in Seattle, the last useful departure from Miami is around 12:59 local.
At 12h 31m the mission uses most of a sixteen hour duty day, which leaves no room for a delay before a rest at the far end becomes the honest answer.
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. 52 of them join MIA to SEA.
| Connecting at | MIA to hub, flights a day | Hub to SEA, flights a day | Track, km | Estimated, gate to gate |
|---|---|---|---|---|
| New Orleans MSY | 3.43 | 1.14 | 4,438 | 7h 25m |
| Fort Lauderdale FLL | 1.14 | 2.29 | 4,402 | 7h 34m |
| Tampa TPA | 9.57 | 3 | 4,380 | 7h 37m |
| Kansas City MCI | 2.29 | 3.57 | 4,407 | 7h 37m |
| Orlando MCO | 12.86 | 5.43 | 4,415 | 7h 39m |
| Salt Lake City SLC | 1.71 | 12.71 | 4,464 | 7h 43m |
With 4 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.
52 airports connect the two ends on the scheduled network held here. The quickest of the dependable ones is New Orleans MSY, where the weaker of the two legs still runs about once a day.
Through MSY the routing covers 4,438 km against the 4,379 km nonstop track and takes about 7h 25m 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 39m more than the nonstop, which is close enough that a connection is worth taking when the nonstop is full or badly timed.
Behind it, Fort Lauderdale FLL at 7h 34m and Tampa TPA at 7h 37m hold the same connection, so a booking has three hubs to try before it has to wait for the nonstop.
If nothing suitable leaves Miami, Fort Lauderdale FLL is 34 km away by great circle and carries 168 scheduled destinations of its own, which is usually a shorter road transfer than a lost day.
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.
Industry within reach of the two ends
Public manufacturing and research sites whose logistics run through MIA or SEA. 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 Miami to Seattle 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 MIA to SEA 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 MIA airport entry
- The SEA airport entry
- Hand carry into the United States
- The written lane, Dubai to Miami
- The written lane, Miami to Bogota
- The written lane, Miami to Sao Paulo
- The route calculator
More pairs through MIA and SEA: Miami to Atlanta, Madrid to Miami, Boston to Miami, Miami to London, San Francisco to Miami, Barcelona to Miami, Miami to Chicago, Miami to Amsterdam.