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Flight records through . Security counts through .

Which SEA to STS flight is punctual? Alaska 1321, 9:54 am.

79% on time across 92 flights in the last 3 months, never cancelled.

Find your flightSEA security

  • AS 1321

    79%

    on time

    9:54 am

    0% cancelled

  • AS 3410

    60%

    on time

    8:44 pm

    0% cancelled

2 regular flights, June to August 2026.

When do the flights leave? 2 regular flights, 9:54 am to 8:44 pm.

None was cancelled in the last 3 months.

Flight records,

  1. AS 1321 9:54 am, 0% cancelled 79%
  2. AS 3410 8:44 pm, 0% cancelled 60%

What time should I fly? The 6 pm departures.

100% landed on time; at 8 pm, 69%. Thursday was the best day, Friday the worst.

Flight records,

DepartsLanded on time
8 am82%
9 am80%
10 am92%
11 am76%
4 pm97%
6 pm100%
7 pm75%
8 pm69%
9 pm72%

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

Calmest around 5 pm. Seattle security, hour by hour.

Security counts,

4a8a12p4p8p
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, all terminals.