d o t logoUnited States Department of Transportation

  OST-R > BTS
(The month selection does not apply to on-time data.)Show all airports (by state)
Seattle, WA: Seattle/Tacoma International (SEA)Scheduled Services except Freight/MailBTS Data as of 5/28/2018
Summary Data (U.S. Flights Only)Carrier Shares for March 2017 - February 2018
Passengers*2017**2018**%ChgRank***
Arrival19,665k20,304k3.25%9
Departure19,599k20,254k3.34%9
Scheduled Flights
Departures179,189182,9522.10%8
Freight/Mail (lb.) (Scheduled and Non-Scheduled)
Total543m632m16.48%17
Carriers
Scheduled19190.00%
* Scheduled enplaned revenue passengers.
** 12 months ending February of each year.
*** Among 803 U.S. airports, 12 months ending February 2018
CarrierPassengersShare
Alaska 16,56240.83%
Delta 6,26915.46%
Horizon Air3,6108.90%
Southwest 3,0877.61%
United 2,9097.17%
Other8,12320.03%
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.
** 2018 represents data for March 2017 - February 2018.
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, 2013-2018
% On Time201320142015201620172018*Rank**
Departure85%84%84%85%83%84%5
Arrival83%82%83%83%80%82%12
Avg Delay (min.)
Departure52.4050.3251.9454.3555.7154.434
Arrival48.6749.4852.0153.2652.6151.253
% Cancelled
Total0.41%0.46%0.39%0.38%0.61%0.51%3
Number of Flights (000)
Total103.1108.7121.3132.6137.2138.6
Number of Reporting Carriers
Total111111111111
* April 2017 - March 2018 .
** Ranked only for major U.S. airports, April 2017 - March 2018.