
How Many Runways Are There on Sea Tac Airport
There are three parallel runways that run in the north-south direction. The passenger terminal is present towards the east. The length of these runways is between 8,500 ft to 12,000 ft:
http://www.portseattle.org/seatac/
In the year 2008, there were close to 946 aircraft operations each day. Out of these operations, 89% were the commercial flights. 10 per cent of these commercial flights were the air taxi operations. Out of these 10%, the transient general aviation component was only 1%.

