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Seattle, WA: Seattle/Tacoma International (SEA)Scheduled Services except Freight/MailBTS Data as of 12/4/2020
Summary Data (U.S. Flights Only)Carrier Shares for September 2019 - August 2020
Passengers*2019**2020**%ChgRank***
Arrival21,877k13,464k-38.45%9
Departure21,829k13,432k-38.47%9
Scheduled Flights
Departures193,088151,688-21.44%7
Freight/Mail (lb.) (Scheduled and Non-Scheduled)
Total685m752m9.79%18
Carriers
Scheduled17185.88%
* Scheduled enplaned revenue passengers.
** 12 months ending August of each year.
*** Among 780 U.S. airports, 12 months ending August 2020
CarrierPassengersShare
Alaska 11,50742.78%
Delta 5,05018.78%
Horizon Air3,03911.30%
Southwest 1,6566.16%
American 1,4055.23%
Other4,23815.76%
Based on enplaned passengers(000) both arriving and departing.
Total Passengers (U.S. Flights, in millions)Top 10 Destination Airports (U.S. Only, Passengers (000))
*  Before October 2002, only carriers operating aircraft with more than 60 seats or 18,000 pounds in payload reported traffic data.
** 2020 represents data for September 2019 - August 2020.
Source: T-100 Domestic Market (US Carriers).
SEA vs. National Departure Delays (Major U.S. Carriers)SEA On-Time Performance Summary (Major U.S. Carriers Only)
A flight is considered delayed when it arrived or departed 15 or more minutes than the schedule. Delayed minutes are calculated from delayed flights only.
Domestic Flights, 2015-2020
% On Time201520162017201820192020*Rank**
Departure84%85%83%84%82%84%9
Arrival83%83%80%80%80%84%11
Avg Delay (min.)
Departure51.9454.3555.7155.0457.2454.864
Arrival52.0153.2652.6151.7854.2152.306
% Cancelled
Total0.39%0.38%0.61%0.47%0.81%3.33%2
Number of Flights (000)
Total121.3132.6137.2140.0142.9110.5
Number of Reporting Carriers
Total111111111111
* October 2019 - September 2020 .
** Ranked only for major U.S. airports, October 2019 - September 2020.