Tulsa (TUL) to Seattle (SEA) flights
Horizon Air flies nonstop from Tulsa International Airport to Seattle-Tacoma International Airport, with about 7 flights a week in July 2026. The 1,558-mile flight takes about 4h 6m gate to gate.
- Distance
- 1,558 mi · 2,507 km
- Flight time
- 4h 6m
- Airlines
- 1
- Seats filled
- 87%
Airlines flying TUL to SEA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Horizon Air | 7 | Embraer E175 | 8,833 | 4h 6m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
TUL to SEA flight schedule
2 flight numbers flew this route in August 2026. The first usually leaves at 5:59pm and the last at 6:09pm. 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 2400Alaska Airlines · operated by Horizon Air | 5:59pm | 8:15pm | 13 | 62% |
| AS 2220Alaska Airlines · operated by Horizon Air | 6:09pm | 8:17pm | 18 | 61% |
Is TUL to SEA on time?
From September 2025 to August 2026, 70% of 167 flights arrived within 15 minutes of schedule and 0% were cancelled. Flights leaving around 4pm were the most punctual (85%), those around 5pm the least (62%). Most delay time was caused by late-arriving aircraft (54%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 167 | 70% | 18 min | 0% |
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 |
|---|---|---|---|
| 3pm to 4pm | 21 | 65% | |
| 4pm to 5pm | 35 | 85% | |
| 5pm to 6pm | 13 | 62% | |
| 6pm to 7pm | 98 | 66% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| March 2026 | 13 | 782 | |
| April 2026 | 30 | 1,697 | |
| May 2026 | 30 | 2,074 | |
| June 2026 | 30 | 2,051 | |
| July 2026 | 31 | 2,229 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.