🇺🇸

SEA Airport - Seattle Tacoma International Airport

Seattle, United States. Departures peak at 17:00 local, averaging 110.2 flights per hour.

Window: last 60 days. Last refreshed: 2026-08-16. Schedule coverage: 120 days observed.

Peak departure hour
17:00
110.2 flights/hr
Quietest active hour
03:00
1 flights/hr
Avg weekday wait
2 min
Security
Avg weekend wait
2 min
Security
Traffic score
74/100
Relative volume

Departures by hour (local time)

Avg per day, last 60 days
0003060912151821

Total: 1290.2 avg departures per day.

Weekday vs weekend departure pattern

Weekday avg per hour
0003060912151821
Weekend avg per hour
0003060912151821

Arrivals by hour (local time)

Avg per day, last 60 days
0003060912151821

Peak arrival hour: 10:00 local (105.6 flights/hr). Total: 1315.5 avg arrivals/day.

Top airlines

  1. 1. Alaska Airlines, (AS) 20,129
  2. 2. Delta Air Lines, (DL) 9,733
  3. 3. Virgin Atlantic Airways (VS) 4,529
  4. 4. KLM Royal Dutch Airlines (Koninklijke Luchtvaart Maatschappij N.V.) (KL) 3,962
  5. 5. Korean Air (KE) 3,638

Top destinations

  1. 1. 🇺🇸 San Francisco (SFO) 4,272
  2. 2. 🇺🇸 Los Angeles (LAX) 4,151
  3. 3. 🇨🇦 Vancouver (YVR) 2,551
  4. 4. 🇺🇸 Anchorage (ANC) 2,515
  5. 5. 🇺🇸 Portland (PDX) 2,384

Frequently asked

What's the busiest hour for departures at SEA?
Departures from Seattle Tacoma International Airport peak at 17:00 local time, averaging 110.2 flights per hour over the past 60 days.
What's the quietest hour to fly out of SEA?
The quietest hour with regular service is 03:00 local time, averaging 1 flights per hour.
How long are security wait times at SEA?
Average weekday security wait at Seattle Tacoma International Airport is 2 minutes, and weekend wait is 2 minutes. This is a rolling average from public airport wait data.
Which airline operates the most flights from SEA?
Alaska Airlines, (AS) is the largest operator at Seattle Tacoma International Airport, with 20129 observed departures in the past 60 days.
What's the most popular destination from SEA?
San Francisco (SFO) is the most-flown destination, with 4272 observed departures in the past 60 days.

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