Seattle (SEA) to Charleston (CHS) flights
Alaska Airlines flies nonstop from Seattle-Tacoma International Airport to Charleston International Airport, with about 7 flights a week in July 2026. The 2,415-mile flight takes about 5h 6m gate to gate.
- Distance
- 2,415 mi · 3,887 km
- Flight time
- 5h 6m
- Airlines
- 1
- Seats filled
- 86%
Airlines flying SEA to CHS
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Alaska Airlines | 7 | Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800 | 52,531 | 5h 6m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SEA to CHS flight schedule
1 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:39am and the last at 8:39am. 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 787Alaska Airlines | 8:39am | 4:58pm | 31 | 88% |
Is SEA to CHS on time?
From September 2025 to August 2026, 86% of 347 flights arrived within 15 minutes of schedule and 0.3% were cancelled. Flights leaving around 10am were the most punctual (90%), those around 8am the least (80%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (49%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 347 | 86% | 7 min | 0.3% |
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 |
|---|---|---|---|
| 8am to 9am | 103 | 80% | |
| 9am to 10am | 174 | 88% | |
| 10am to 11am | 70 | 90% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 32 | 5,232 | |
| September 2025 | 30 | 4,608 | |
| October 2025 | 29 | 4,533 | |
| November 2025 | 23 | 3,474 | |
| December 2025 | 31 | 4,376 | |
| January 2026 | 24 | 2,976 | |
| February 2026 | 25 | 3,581 | |
| March 2026 | 31 | 4,941 | |
| April 2026 | 30 | 4,640 | |
| May 2026 | 32 | 4,813 | |
| June 2026 | 30 | 4,630 | |
| July 2026 | 31 | 4,727 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.