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Flight records through . Security counts through .

Which SEA to MIA flight is punctual? Delta 506, 8:05 am.

82% on time across 92 flights in the last 3 months, 1.1% cancelled.

Find your flightSEA security
DepartsFlightOn time
8:05 amDL 50682%
12:56 pmAA 65482%
8:12 amAS 30579%
8:45 pmAA 147176%
4 of 4 regular flights, ranked by arrivals on time, June to August 2026.

Which airline is most reliable? Alaska and Delta, neck and neck.

Alaska landed on time 80% of the time, Delta 79%.

Flight records,

  • Alaska

    80%

    on time

    0.3% cancelled

  • Delta

    79%

    on time

    1.4% cancelled

  • American

    77%

    on time

    0.8% cancelled

When do the flights leave? 4 regular flights, 8:05 am to 8:45 pm.

AA 654 was cancelled most often, 2% of the time.

Flight records,

  1. AS 305 8:12 am, 0% cancelled 79%
  1. DL 506 8:05 am, 1% cancelled 82%
  1. AA 654 12:56 pm, 2% cancelled 82%
  2. AA 1471 8:45 pm, 0% cancelled 76%

What time should I fly? The 7 am departures.

86% landed on time; at 1 pm, 71%. Wednesday was the best day, Friday the worst.

Flight records,

DepartsLanded on time
7 am86%
8 am77%
12 pm85%
1 pm71%
8 pm79%
10 pm73%
11 pm81%

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.