Delta · SEA
What gates does Delta use at Seattle Airport (SEA)?
Delta uses 43 gates at Seattle Airport (SEA), mainly in Concourses A, B and S, with about 159 departures a day (Oct 1–21, 2026). It is the main airline at 22 of them. By departures: Concourses A (52% of its departures), B (40%) and S (8%).
Based on 5,710 Delta flights at SEA, Oct 1–21, 2026 (full days)
How Delta compares at SEA
- 2nd of the 34 airlines with regular flights at SEA by departures: 27% of them (159 departures a day of about 587 a day).
- 26% of the seats leaving SEA: about 22,466 a day, 141 per departure.
- 3.2 turns a day at each gate it turns planes at, 29% fewer than the airport’s 4.5.
- Median turn at the gate: 75 min, the same as the airport median (75 min).
- 37% of its departures are regional jets, against 28% across SEA.
- At SEA, Delta’s 159 departures a day compare with Alaska’s 309 and United’s 30. Delta has 22 gates of its own; Alaska 45; United 5.
Where Delta flies nonstop from SEA
64 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 |
|---|---|---|
| Portland, ORPDX | 7-8/day | Alaska (12/day) |
| SpokaneGEG | 7-8/day | Alaska (9-10/day) |
| AtlantaATL | 7/day | Alaska (3/day) |
| Salt Lake CitySLC | 6-7/day | Alaska (4-5/day), United (under 1/week) |
| Los AngelesLAX | 6-7/day | Alaska (9/day), United (3-4/day), American (3/day), Frontier (1/day) |
| BoiseBOI | 6-7/day | Alaska (8/day) |
| VancouverYVR | 5-6/day | Alaska (6/day), Air Canada (3-4/day) |
| PhoenixPHX | 5/day | Alaska (7-8/day), American (3-4/day), Southwest (3/day) |
| Minneapolis/St. PaulMSP | 5/day | Alaska (2-3/day), Sun Country (4-5/week), United (under 1/week) |
| San FranciscoSFO | 5/day | Alaska (8-9/day), United (7/day) |
| AnchorageANC | 4-5/day | Alaska (14/day) |
| Las VegasLAS | 4-5/day | Alaska (8-9/day), Southwest (2-3/day), Frontier (4-5/week), United (under 1/week), American (under 1/week) |
| SacramentoSMF | 4-5/day | Alaska (4-5/day), Southwest (3/day) |
| San JoseSJC | 4-5/day | Alaska (5-6/day), Southwest (2-3/day), United (under 1/week) |
| San DiegoSAN | 4-5/day | Alaska (8-9/day), Southwest (2/day) |
| DetroitDTW | 4/day | Alaska (2/day) |
| New York JFKJFK | 4/day | Alaska (3-4/day), JetBlue (1/day) |
| Orange CountySNA | 3-4/day | Alaska (6-7/day) |
| BostonBOS | 3-4/day | Alaska (4/day), JetBlue (1/day) |
| Eugene, OREUG | 3/day | Alaska (5-6/day) |
| Chicago O'HareORD | 3/day | United (5/day), American (4-5/day), Alaska (4-5/day) |
| DenverDEN | 3/day | United (5-6/day), Alaska (4-5/day), Southwest (3-4/day), Frontier (1/day), American (under 1/week) |
| Pasco, WAPSC | 3/day | Alaska (4/day) |
| Redmond/BendRDM | 3/day | Alaska (5/day) |
| Medford, ORMFR | 3/day | Alaska (3-4/day) |
| Ontario, CAONT | 2-3/day | Alaska (3-4/day), Frontier (4-5/week) |
| AustinAUS | 2-3/day | Alaska (3/day), Southwest (1/day) |
| AmsterdamAMS | 2/day | none seen |
| Dallas/Fort WorthDFW | 2/day | American (7-8/day), Alaska (4-5/day) |
| HonoluluHNL | 2/day | Alaska (6/day) |
| OrlandoMCO | 2/day | Alaska (3/day) |
| BozemanBZN | 2/day | Alaska (3-4/day) |
| FairbanksFAI | 1-2/day | Alaska (4/day) |
| Kansas CityMCI | 1/day | Alaska (2/day) |
| Lewiston, IDLWS | 1/day | none seen |
| Tokyo HanedaHND | 1/day | ANA (1/day) |
| CincinnatiCVG | 1/day | Alaska (1/day) |
| Fort LauderdaleFLL | 1/day | Alaska (1/day) |
| Kahului (Maui)OGG | 1/day | Alaska (4/day) |
| KonaKOA | 1/day | Alaska (2/day) |
| Lihue (Kauai)LIH | 1/day | Alaska (2/day) |
| London HeathrowLHR | 1/day | British Airways (2/day), Alaska (1/day), Virgin Atlantic (1/day) |
| MiamiMIA | 1/day | American (1/day), Alaska (1/day) |
| NashvilleBNA | 1/day | Alaska (2/day) |
| ParisCDG | 1/day | Air France (5-6/week) |
| PhiladelphiaPHL | 1/day | American (2-3/day), Alaska (2/day) |
| Raleigh/DurhamRDU | 1/day | Alaska (1/day) |
| SeoulICN | 1/day | Korean Air (1-2/day), Alaska (5-6/week), Asiana (2-3/week) |
| TucsonTUS | 1/day | Alaska (1-2/day) |
| Washington NationalDCA | 1/day | Alaska (2/day) |
| TaipeiTPE | 6-7/week | EVA Air (1-2/day), STARLUX (1/day), China Airlines (5-6/week) |
| TampaTPA | 6-7/week | Alaska (1/day) |
| Washington DullesIAD | 6-7/week | Alaska (2-3/day), United (2/day) |
| ShanghaiPVG | 6/week | none seen |
| RomeFCO | 4/week | Alaska (6/week) |
| BarcelonaBCN | 3/week | none seen |
| AlbuquerqueABQ | 2-3/week | Alaska (2/day) |
| JuneauJNU | 1-2/week | Alaska (3-4/day) |
| WhitehorseYXY | under 1/week | none seen |
| Billings, MTBIL | under 1/week | Alaska (3/day) |
| EdmontonYEG | under 1/week | Alaska (1-2/day) |
| El PasoELP | under 1/week | Alaska (1/day) |
| Roswell, NMROW | under 1/week | none seen |
| SeattleSEA | under 1/week | Alaska (1-2/week) |
When Delta flies at SEA
- First departure of the day usually around 5:25 am, the last around 12:05 am (after midnight).
- Busiest hour: 7:00 am–8:00 am, with about 23 of its arrivals and departures.
- About 16 of its aircraft spend the night at SEA (arrive in the evening, leave the next morning).
Delta’s aircraft at SEA
| Aircraft | Departures | Seats each |
|---|---|---|
| E175 | 60/day | 76 |
| A321neo | 29/day | 194 |
| A220-300 | 24/day | 130 |
| 737-800 | 18/day | 160 |
| 737-900 | 15/day | 180 |
| A330-900neo | 5/day | 281 |
| A350-900 | 4/day | 306 |
| 757-300 | 2-3/day | 234 |
| A321 | 1-2/day | 191 |
| A330-300 | 1-2/week | 282 |
| A220-100 | 1-2/week | 109 |
About 22,466 seats leave SEA on Delta each day. Of the gates it holds, 3 have taken a wide-body, 4 have taken a 757/767, 13 have taken a narrow-body and 2 only regional jets. Seats are capacity from each airline’s seat map per aircraft type, not passengers.
Delta’s gates at SEA
Concourse A A1, A2, A3, A4, A4A, A5, A6, A9, A11, A12, A13, A14
Concourse B B1, B3, B4, B5, B5A, B6, B7, B7B, B8
Gates TBA
Held = the airline flying the gate most (regional partners count as their brand).
Gates it shares
About this data
Based on 16 full days of flights at SEA, Oct 1–21, 2026. Gates of its own are the gates where Delta flies the most (regional partners count as their brand). Every one of its departures has a seat count.
Delta at SEA: questions
What terminal is Delta at Seattle Airport (SEA)?
Delta flies from Concourses A, B and S at Seattle Airport (SEA). By departures: Concourses A (52% of its departures), B (40%) and S (8%).
What gates does Delta use at SEA?
Delta has 22 gates at SEA (the airline flying each one most): A1, A11, A12, A13, A14, A2, A3, A4, A4A, A5, A6, A9 and 10 more. It used 43 gates in all over Oct 1–21, 2026.
How many flights a day does Delta have from SEA?
About 159 departures a day and 22,466 seats, averaged over Oct 1–21, 2026.
Where does Delta fly nonstop from SEA?
Delta flies nonstop to 64 cities from SEA, the most often to Portland, OR, Spokane, Atlanta, Salt Lake City, Los Angeles and Boise. Routes seen Oct 1–21, 2026.
When is Delta’s first flight out of SEA?
Usually around 5:25 am; the last leaves around 12:05 am (after midnight).
Does Delta share gates at SEA?
Yes: 21 gates it uses are shared or used most by another airline, e.g. gate S1 with Alaska, Air Canada, Frontier and Volaris.
Other airlines at SEA
All of SEA’s gates by airline · Delta at every airport we map · Nonstop routes from SEA