The sector is held by Alaska Airlines, Delta Air Lines and Korean Air.
Airport pair · hand carry reference
ATL Atlanta to SEA Seattle
Hartsfield-Jackson Atlanta, the United States, to Seattle Tacoma International, the United States. Computed from the scheduled network held on 2026-09-07.
- Nonstop
- 12 times a day
- Great circle
- 3,505 km
- Block, estimated
- 4h 43m
- Door to door
- 11h 28m
What ATL to SEA looks like
The ATL to SEA sector, the carriers on it and the flying time, before anything is promised to anybody.
Atlanta ATL to Seattle SEA is a long haul sector of 3,505 km by great circle, flown nonstop 12 times a day.
At the cruise speed this site models for 3,505 km, 880 km an hour, and thirty minutes of taxi at the two ends, the flight blocks at about 4h 43m.
Atlanta ATL is a major hub in the network held here, 253 scheduled destinations and 1,118.1 departures a day. Seattle SEA has 145 destinations and 717.9 departures a day.
Seattle is 3 hours behind of Atlanta 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 ATL to SEA from the scheduled route statistics, both directions, with the operating carriers named.
| Direction | Flights a day | Flights a week | Operated by |
|---|---|---|---|
| ATL to SEA | 12 | 84 | Alaska Airlines, Delta Air Lines, Korean Air |
| SEA to ATL | 12 | 84 | Alaska Airlines, Delta Air Lines |
3 carriers are recorded on the sector, so a missed departure is normally a rebooking rather than a lost day.
At 12 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 168 departures a week on ATL 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 4h 43m block time on ATL 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 ATL | 90 min | 1h 30m |
| At ATL before departure | 180 min | 4h 30m |
| ATL to SEA in the air, estimated | 283 min | 9h 13m |
| Formalities at SEA | 90 min | 10h 43m |
| Delivery run in Seattle | 45 min | 11h 28m |
| Door to door | 688 min | 11h 28m |
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 ATL to SEA is 11h 28m.
A courier who leaves Atlanta at 09:00 local is on the ground in Seattle at about 10:43 local and at the door by 12:58 the same day.
Working backwards from a six in the evening handover in Seattle, the last useful departure from Atlanta is around 14:02 local.
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. 64 of them join ATL to SEA.
| Connecting at | ATL to hub, flights a day | Hub to SEA, flights a day | Track, km | Estimated, gate to gate |
|---|---|---|---|---|
| Kansas City MCI | 9.29 | 3.57 | 3,505 | 6h 28m |
| Boise BOI | 1.57 | 15.57 | 3,594 | 6h 43m |
| Omaha OMA | 5.29 | 2.14 | 3,516 | 6h 44m |
| Portland PDX | 5.71 | 22.43 | 3,697 | 6h 45m |
| Nashville BNA | 11.43 | 6.14 | 3,520 | 6h 50m |
| Milwaukee MKE | 6.86 | 2.14 | 3,797 | 6h 51m |
With 12 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.
64 airports connect the two ends on the scheduled network held here. The quickest of the dependable ones is Kansas City MCI, where the weaker of the two legs still runs 3.6 times a day.
Through MCI the routing covers 3,505 km against the 3,505 km nonstop track and takes about 6h 28m 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 45m more than the nonstop, which is close enough that a connection is worth taking when the nonstop is full or badly timed.
Behind it, Boise BOI at 6h 43m and Omaha OMA at 6h 44m hold the same connection, so a booking has three hubs to try before it has to wait for the nonstop.
If nothing suitable leaves Atlanta, Birmingham BHM is 216 km away by great circle and carries 84 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 ATL or SEA. Listed as industrial geography, not as customers of anyone.
- Mercedes-Benz, Tuscaloosa, AlabamaSUV assembly for world markets. The same transatlantic pattern as BMW Spartanburg. Logistics through Atlanta ATL.
- 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 Atlanta 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 ATL 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 ATL airport entry
- The SEA airport entry
- Hand carry into the United States
- The written lane, Dubai to Atlanta
- The written lane, Dubai to Seattle
- The written lane, Seattle to Nagoya
- The route calculator
More pairs through ATL and SEA: Boston to Atlanta, London to Atlanta, Atlanta to Detroit, Atlanta to San Francisco, Paris to Atlanta, Amsterdam to Atlanta, Chicago to Atlanta, Frankfurt to Atlanta.