Seattle (SEA) to Pittsburgh (PIT) flights
Alaska Airlines flies nonstop from Seattle-Tacoma International Airport to Pittsburgh International Airport, with about 14 flights a week in July 2026. The 2,125-mile flight takes about 4h 29m gate to gate.
- Distance
- 2,125 mi · 3,420 km
- Flight time
- 4h 29m
- Airlines
- 1
- Seats filled
- 83%
Airlines flying SEA to PIT
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Alaska Airlines | 14 | Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800 | 68,210 | 4h 29m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SEA to PIT flight schedule
2 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 9:34am and the last at 10:37pm. 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 412Alaska Airlines | 9:34am | 5:12pm | 30 | 80% |
| AS 77Alaska Airlines | 10:37pm | 6:10am | 31 | 71% |
Is SEA to PIT on time?
From September 2025 to August 2026, 80% of 474 flights arrived within 15 minutes of schedule and 0.6% were cancelled. Flights leaving around 11pm were the most punctual (92%), those around 10pm the least (69%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (49%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 474 | 80% | 10 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 |
|---|---|---|---|
| 9am to 10am | 83 | 77% | |
| 10am to 11am | 107 | 83% | |
| 11am to 12pm | 149 | 79% | |
| 9pm to 10pm | 43 | 88% | |
| 10pm to 11pm | 68 | 69% | |
| 11pm to 12am | 24 | 92% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 58 | 9,483 | |
| September 2025 | 52 | 7,438 | |
| October 2025 | 32 | 4,835 | |
| November 2025 | 26 | 3,669 | |
| December 2025 | 29 | 4,093 | |
| January 2026 | 22 | 3,112 | |
| February 2026 | 20 | 2,641 | |
| March 2026 | 27 | 4,099 | |
| April 2026 | 30 | 4,405 | |
| May 2026 | 51 | 6,311 | |
| June 2026 | 61 | 8,856 | |
| July 2026 | 62 | 9,382 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.