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Flight records through . Security counts through .

When is Seattle security busiest? 6 to 10 every morning.

Calmest around 5 pm. Choose any hour on the board.

On time by hourCheckpoint peaks
4a6a8a10a12p2p4p6p8p10p
Mon
Tue
Wed
Thu
Fri
Sat
Sun
MonTueWedThuFriSatSun
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p

Friday, 7 am

4,660

people screened, 8-week average.

Which checkpoint is busiest? SCP 3 and SCP 6, by 10 am.

SCP IAF peaks at 1 pm.

Security counts,

  • SCP 3

    10 am

    1,170 screened

  • SCP 6

    7 am

    940 screened

  • SCP 4

    9 am

    680 screened

  • SCP 5

    8 am

    840 screened

  • SCP 1

    10 am

    590 screened

  • SCP IAF

    1 pm

    280 screened

  • SCP 2

    10 am

    240 screened

Which departures leave on time? Leave in the morning.

5 am: 93% left on time. 8 pm: 72%.

Flight records,

DepartsLeft on time
5 am93%
6 am92%
7 am88%
8 am87%
9 am83%
10 am77%
11 am72%
12 pm76%
1 pm75%
2 pm76%
3 pm76%
4 pm76%
5 pm75%
6 pm75%
7 pm76%
8 pm72%
9 pm76%
10 pm75%
11 pm77%

Which airline runs on time here? Delta and United lead.

Alaska flies 56% of SEA departures and landed on time 79% of the time.

Flight records,

  1. Delta 51,188 flights, 0.9% cancelled 82%
  2. United 9,557 flights, 0.8% cancelled 80%
  3. Alaska 103,514 flights, 1.0% cancelled 79%
  4. American 8,647 flights, 1.4% cancelled 78%
  5. Southwest 8,194 flights, 0.4% cancelled 68%

Not ranked, under ten flights a day: Frontier 74% of 1,397, Hawaiian 65% of 612, JetBlue 51% of 413.

Where do SEA flights land late? San Francisco, Anchorage, Las Vegas.

Lowest on-time rates of the 8 busiest.

Flight records,

ToFlightsOn time
LAX Los Angeles7,54481%
PHX Phoenix7,20577%
SFO San Francisco6,82259%
ANC Anchorage6,64176%
PDX Portland6,52481%
DEN Denver6,33377%
GEG Spokane6,15783%
LAS Las Vegas5,62077%

Every route from SEA

101 destinations with flights in the last twelve months.