Seattle (SEA) to Atlanta (ATL) flights
Delta Air Lines, Alaska Airlines fly nonstop from Seattle-Tacoma International Airport to Hartsfield Jackson Atlanta International Airport, with about 77 flights a week in July 2026. The 2,182-mile flight takes about 4h 39m gate to gate.
- Distance
- 2,182 mi · 3,512 km
- Flight time
- 4h 39m
- Airlines
- 2
- Seats filled
- 87%
Airlines flying SEA to ATL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Delta Air Lines | 58 | Boeing 737-900ER, Boeing 757-300, Boeing 757-200 | 412,008 | 4h 38m |
| Alaska Airlines | 19 | Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800 | 130,744 | 4h 41m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SEA to ATL flight schedule
11 flight numbers flew this route in August 2026, 11 of them almost daily. The first usually leaves at 6:00am and the last at 11:59pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| DL 569Delta Air Lines | 6:00am | 1:52pm | 31 | 95% |
| DL 562Delta Air Lines | 7:16am | 3:13pm | 31 | 82% |
| AS 334Alaska Airlines | 9:05am | 4:57pm | 31 | 81% |
| DL 797Delta Air Lines | 9:10am | 5:01pm | 31 | 71% |
| DL 554Delta Air Lines | 11:56am | 8:01pm | 31 | 77% |
| DL 542Delta Air Lines | 1:30pm | 9:42pm | 31 | 79% |
| DL 560Delta Air Lines | 3:50pm | 11:59pm | 31 | 85% |
| AS 727Alaska Airlines | 4:05pm | 11:59pm | 31 | 82% |
| DL 409Delta Air Lines | 10:35pm | 6:23am | 30 | 85% |
| AS 464Alaska Airlines | 11:43pm | 7:33am | 23 | 90% |
| DL 652Delta Air Lines | 11:59pm | 7:47am | 31 | 89% |
Is SEA to ATL on time?
From September 2025 to August 2026, 84% of 3,294 flights arrived within 15 minutes of schedule and 0.7% were cancelled. Flights leaving around 6am were the most punctual (95%), those around 9am the least (76%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (57%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 2,402 | 84% | 14 min | 0.7% |
| Alaska Airlines | 892 | 83% | 9 min | 0.6% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 6am to 7am | 364 | 95% | |
| 7am to 8am | 324 | 82% | |
| 8am to 9am | 171 | 82% | |
| 9am to 10am | 291 | 76% | |
| 11am to 12pm | 348 | 77% | |
| 1pm to 2pm | 211 | 82% | |
| 3pm to 4pm | 218 | 81% | |
| 4pm to 5pm | 351 | 84% | |
| 9pm to 10pm | 233 | 85% | |
| 10pm to 11pm | 151 | 89% | |
| 11pm to 12am | 491 | 88% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 313 | 56,421 | |
| September 2025 | 284 | 49,386 | |
| October 2025 | 291 | 46,142 | |
| November 2025 | 254 | 39,002 | |
| December 2025 | 266 | 43,211 | |
| January 2026 | 217 | 33,724 | |
| February 2026 | 195 | 31,549 | |
| March 2026 | 226 | 36,550 | |
| April 2026 | 255 | 39,691 | |
| May 2026 | 302 | 48,764 | |
| June 2026 | 328 | 57,595 | |
| July 2026 | 342 | 60,717 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.