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Seattle, WA: Seattle/Tacoma International (SEA)Scheduled Services except Freight/MailBTS Data as of 4/23/2019
Summary Data (U.S. Flights Only)Carrier Shares for February 2018 - January 2019
Passengers*2018**2019**%ChgRank***
Arrival20,243k21,503k6.23%7
Departure20,170k21,469k6.44%7
Scheduled Flights
Departures182,118191,6825.25%7
Freight/Mail (lb.) (Scheduled and Non-Scheduled)
Total629m663m5.54%16
Carriers
Scheduled19205.26%
* Scheduled enplaned revenue passengers.
** 12 months ending January of each year.
*** Among 795 U.S. airports, 12 months ending January 2019
CarrierPassengersShare
Alaska 17,98041.84%
Delta 7,48117.41%
Horizon Air3,9239.13%
Southwest 3,1337.29%
United 2,9676.90%
Other7,48817.43%
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.
** 2019 represents data for February 2018 - January 2019.
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, 2014-2019
% On Time201420152016201720182019*Rank**
Departure84%84%85%83%84%83%8
Arrival82%83%83%80%80%79%18
Avg Delay (min.)
Departure50.3251.9454.3555.7155.0457.623
Arrival49.4852.0153.2652.6151.7853.324
% Cancelled
Total0.46%0.39%0.38%0.61%0.47%0.73%4
Number of Flights (000)
Total108.7121.3132.6137.2140.0139.4
Number of Reporting Carriers
Total111111111110
* March 2018 - February 2019 .
** Ranked only for major U.S. airports, March 2018 - February 2019.