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Seattle, WA: Seattle/Tacoma International (SEA)Scheduled Services except Freight/MailBTS Data as of 9/23/2020
Summary Data (U.S. Flights Only)Carrier Shares for July 2019 - June 2020
Passengers*2019**2020**%ChgRank***
Arrival21,771k16,604k-23.73%8
Departure21,719k16,613k-23.51%8
Scheduled Flights
Departures192,509165,807-13.87%7
Freight/Mail (lb.) (Scheduled and Non-Scheduled)
Total678m731m7.81%18
Carriers
Scheduled18180.00%
* Scheduled enplaned revenue passengers.
** 12 months ending June of each year.
*** Among 780 U.S. airports, 12 months ending June 2020
CarrierPassengersShare
Alaska 14,17042.66%
Delta 6,55919.75%
Horizon Air3,2739.85%
Southwest 2,0736.24%
United 1,9435.85%
Other5,19815.65%
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 July 2019 - June 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%81%11
Arrival83%83%80%80%80%80%16
Avg Delay (min.)
Departure51.9454.3555.7155.0457.2454.343
Arrival52.0153.2652.6151.7854.2152.834
% Cancelled
Total0.39%0.38%0.61%0.47%0.81%2.95%2
Number of Flights (000)
Total121.3132.6137.2140.0142.9125.8
Number of Reporting Carriers
Total111111111111
* July 2019 - June 2020 .
** Ranked only for major U.S. airports, July 2019 - June 2020.