San Antonio (SAT) to Seattle (SEA) flights
Alaska Airlines flies nonstop from San Antonio International Airport to Seattle-Tacoma International Airport, with about 14 flights a week in July 2026. The 1,774-mile flight takes about 4h 24m gate to gate.
- Distance
- 1,774 mi · 2,855 km
- Flight time
- 4h 24m
- Airlines
- 1
- Seats filled
- 82%
Airlines flying SAT to SEA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Alaska Airlines | 14 | Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800 | 79,662 | 4h 24m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SAT to SEA flight schedule
2 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 7:02am and the last at 4:44pm. 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) |
|---|---|---|---|---|
| AS 519Alaska Airlines | 7:02am | 9:25am | 18 | 84% |
| AS 494Alaska Airlines | 4:44pm | 7:10pm | 31 | 73% |
Is SAT to SEA on time?
From September 2025 to August 2026, 79% of 550 flights arrived within 15 minutes of schedule and 1.1% were cancelled. Flights leaving around 7am were the most punctual (91%), those around 4pm the least (69%). Most delay time was caused by late-arriving aircraft (46%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 550 | 79% | 13 min | 1.1% |
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 | 129 | 82% | |
| 7am to 8am | 98 | 91% | |
| 4pm to 5pm | 68 | 69% | |
| 5pm to 6pm | 77 | 77% | |
| 6pm to 7pm | 136 | 74% | |
| 7pm to 8pm | 42 | 78% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 56 | 7,719 | |
| September 2025 | 47 | 6,044 | |
| October 2025 | 52 | 6,785 | |
| November 2025 | 48 | 6,315 | |
| December 2025 | 52 | 7,336 | |
| January 2026 | 37 | 5,214 | |
| February 2026 | 28 | 4,374 | |
| March 2026 | 31 | 5,035 | |
| April 2026 | 30 | 4,622 | |
| May 2026 | 50 | 7,419 | |
| June 2026 | 60 | 9,069 | |
| July 2026 | 61 | 9,730 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.