American · SEA
What gates does American use at Seattle Airport (SEA)?
American uses 23 gates at Seattle Airport (SEA), mainly in Concourses D and S, with about 26 departures a day (Oct 1–21, 2026). It is the main airline at 6 of them. By departures: Concourses D (93% of its departures) and S (6%).
Based on 968 American flights at SEA, Oct 1–21, 2026 (full days)
How American compares at SEA
- 4th of the 34 airlines with regular flights at SEA by departures: 4% of them (26 departures a day of about 587 a day).
- 5% of the seats leaving SEA: about 4,287 a day, 163 per departure.
- 1.7 turns a day at each gate it turns planes at, 62% fewer than the airport’s 4.5.
- Median turn at the gate: 64 min, 11 min shorter than the airport median (75 min).
- 22% of its departures are regional jets, against 28% across SEA.
- At SEA, American’s 26 departures a day compare with Southwest’s 24 and United’s 30. American has 6 gates of its own; Southwest 3; United 5.
Where American flies nonstop from SEA
10 nonstop destinations. Nonstop routes seen Oct 1–21, 2026; a few days of data can miss weekly or seasonal routes.
| Destination | Flights | Other airlines on this route |
|---|---|---|
| Dallas/Fort WorthDFW | 7-8/day | Alaska (4-5/day), Delta (2/day) |
| Chicago O'HareORD | 4-5/day | United (5/day), Alaska (4-5/day), Delta (3/day) |
| CharlotteCLT | 3-4/day | none seen |
| PhoenixPHX | 3-4/day | Alaska (7-8/day), Delta (5/day), Southwest (3/day) |
| Los AngelesLAX | 3/day | Alaska (9/day), Delta (6-7/day), United (3-4/day), Frontier (1/day) |
| PhiladelphiaPHL | 2-3/day | Alaska (2/day), Delta (1/day) |
| MiamiMIA | 1/day | Delta (1/day), Alaska (1/day) |
| Cedar RapidsCID | under 1/week | none seen |
| DenverDEN | under 1/week | United (5-6/day), Alaska (4-5/day), Southwest (3-4/day), Delta (3/day), Frontier (1/day) |
| Las VegasLAS | under 1/week | Alaska (8-9/day), Delta (4-5/day), Southwest (2-3/day), Frontier (4-5/week), United (under 1/week) |
When American flies at SEA
- First departure of the day usually around 5:00 am, the last around 12:20 am (after midnight).
- Busiest hour: 1:00 pm–2:00 pm, with about 4 of its arrivals and departures.
- About 4 of its aircraft spend the night at SEA (arrive in the evening, leave the next morning).
American’s aircraft at SEA
| Aircraft | Departures | Seats each |
|---|---|---|
| A321 | 15/day | 190 |
| A321neo | 4-5/day | 196 |
| E175 | 3/day | 76 |
| E170 | 2-3/day | 65 |
| A319 | 6-7/week | 128 |
| 737-800 | 4-5/week | 172 |
| 737 MAX 8 | under 1/week | 172 |
About 4,287 seats leave SEA on American each day. Of the gates it holds, 5 have taken a narrow-body and 1 only regional jets. Seats are capacity from each airline’s seat map per aircraft type, not passengers.
American’s gates at SEA
Concourse D D9, D10, D11
Gates 53, 54, 55
Held = the airline flying the gate most (regional partners count as their brand).
Gates it shares
| Gate | Who holds it | Other airlines there |
|---|---|---|
| S1B | Common use | Frontier, WestJet, Air Canada, Southwest |
| S2 | Common use | Delta, Alaska, Volaris, Icelandair |
| S3A | Common use | Southwest, Frontier, WestJet, JetBlue |
| S4A | Common use | Southwest, JetBlue, Frontier, WestJet |
| S5 | Common use | Delta, Air Canada, United, Aeroméxico |
| A6A | Too few flights yet | Delta |
| S6A | Common use | JetBlue, Southwest, WestJet, Frontier |
| A7 | Common use | Delta, Alaska, United, Air Canada |
| S7A | Common use | JetBlue |
| A8A | Common use | Delta, Frontier |
| D8 | Held by Alaska | Alaska |
| S8A | Common use | Southwest, WestJet, JetBlue, Delta |
| S9A | Common use | Delta, Alaska, United, Southwest |
| S15 | Common use | Delta, Emirates, EVA Air, Icelandair |
| D26 | Common use | Alaska, WestJet, Frontier, Air Canada |
| 51 | Too few flights yet | – |
| 52 | Too few flights yet | – |
About this data
Based on 16 full days of flights at SEA, Oct 1–21, 2026. Gates of its own are the gates where American flies the most (regional partners count as their brand). Every one of its departures has a seat count.
American at SEA: questions
What terminal is American at Seattle Airport (SEA)?
American flies from Concourses D and S at Seattle Airport (SEA). By departures: Concourses D (93% of its departures) and S (6%).
What gates does American use at SEA?
American has 6 gates at SEA (the airline flying each one most): 53, 54, 55, D10, D11 and D9. It used 23 gates in all over Oct 1–21, 2026.
How many flights a day does American have from SEA?
About 26 departures a day and 4,287 seats, averaged over Oct 1–21, 2026.
Where does American fly nonstop from SEA?
American flies nonstop to 10 cities from SEA, the most often to Dallas/Fort Worth, Chicago O'Hare, Charlotte, Phoenix, Los Angeles and Philadelphia. Routes seen Oct 1–21, 2026.
When is American’s first flight out of SEA?
Usually around 5:00 am; the last leaves around 12:20 am (after midnight).
Does American share gates at SEA?
Yes: 17 gates it uses are shared or used most by another airline, e.g. gate S1B with Frontier, WestJet, Air Canada and Southwest.
Other airlines at SEA
All of SEA’s gates by airline · American at every airport we map · Nonstop routes from SEA