Charleston International Airport
Charleston, United StatesCHS / KCHS
Regional airport · 80 direct destinations · 2 runways · longest runway 9,003 ft
86 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Charleston → Seattle
CHS
CharlestonCharleston International Airport
CharlestonCharleston International AirportSEASeattleSeattle–Tacoma International Airport
SeattleSeattle–Tacoma International Airport- Distance
- 2,410 mi
- Estimated flight time
- ~5h 20m
Seattle is currently 3 hours behind Charleston.
Observed nonstop
How often does this route fly?
Frequency
Daily at most
On average around 1 flights a day, observed from October 2025 to September 2026.
- 1
- flights per day
- 1
- busiest month · Oct
- 5 hr 27 min
- measured flight time
- 10 / 12
- months seen
Through the year
Per day, month by month
- 1Jan2026
- 1Feb
- 1Mar
- –Apr
- 1May
- 1Jun
- 1Jul
- 1Aug
- –Sep
- 1Oct2025
- 1Nov
- 1Dec
In January 2026 we saw less traffic at Charleston in general than usual; compare that month with care.
In April 2026, September 2026 we do not see this direction because of limited reception; the opposite direction is seen.
Airlines
Who flies it
Alaska Airlinesall year
Through the day
Departure times
Local time in Charleston. Most departures between 19:00 and 22:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 0.2Mon
- 0.1Tue
- 0.2Wed
- 0.2Thu
- 0.3Fri
- 0.3Sat
- 0.2Sun
Fleet
Aircraft observed
- Boeing 737-900B73947%
- Boeing 737 MAX 9B39M37%
- Boeing 737-800B7389%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1 | 15 |
|
| February 2026 | 1 | 6 |
|
| March 2026 | 1 | 2 |
|
| April 2026 | We do not see this direction because of limited reception; the opposite direction is seen. | ||
| May 2026 | 1 | 7 |
|
| June 2026 | 1 | 3 |
|
| July 2026 | 1 | 2 |
|
| August 2026 | 1 | 4 |
|
| September 2026 | We do not see this direction because of limited reception; the opposite direction is seen. | ||
| October 2025 | 1 | 2 |
|
| November 2025 | 1 | 14 |
|
| December 2025 | 1 | 20 |
|
Airlines observed on this route
From observed callsign routes on CHS-SEA - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The 4th longest observed direct route from CHS, out of 80.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Charleston: 80.
- Direct destinations observed from Seattle: 132.
The airports on this route
Seattle–Tacoma International Airport
Seattle, United StatesSEA / KSEA
International hub · 132 direct destinations · 3 runways · longest runway 11,900 ft
71 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Charleston to Seattle
The observed direct connection between Charleston International Airport (CHS) and Seattle–Tacoma International Airport (SEA) covers approximately 2,410 mi. The estimated flight time is around 5h 20m. Alaska Airlines has been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Charleston from Seattle by air?
- The great-circle distance between Charleston International Airport and Seattle–Tacoma International Airport is approximately 2,410 mi.
- How long is the flight from Charleston to Seattle?
- Based on the distance, the estimated flight time is about 5h 20m. This is an estimate, not a schedule.
- Is there a direct connection from Charleston to Seattle?
- Yes, a direct connection between CHS and SEA has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Alaska Airlines.
- How often is there a flight from Charleston to Seattle?
- On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 75 observed flights. Mainly Alaska Airlines. That is an observation, not a timetable.
- What is the current time difference between Charleston and Seattle?
- Seattle is currently 3 hours behind Charleston.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.