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Flight records through . Security counts through .

Which SEA to SMF flight is punctual? Southwest 3629, 5 am.

98% on time across 60 flights in the last 3 months, never cancelled.

Find your flightSEA security
DepartsFlightOn time
5:00 amWN 362998%
7:28 amAS 68296%
8:43 amDL 388194%
5:30 amWN 354293%
10:10 amDL 412592%
7:35 amWN 363089%
9:45 amWN 354385%
2:45 pmDL 415384%
8 of 19 regular flights, ranked by arrivals on time, June to August 2026.

Which airline is most reliable? Delta, ahead of Alaska.

Delta landed on time 89% of the time, Alaska 80%.

Flight records,

  • Delta

    89%

    on time

    0.2% cancelled

  • Alaska

    80%

    on time

    0.8% cancelled

  • Southwest

    73%

    on time

    0.4% cancelled

When do the flights leave? 19 regular flights, 5 am to 9:40 pm.

AS 1427 was cancelled most often, 2% of the time.

Flight records,

  1. DL 3881 8:43 am, 0% cancelled 94%
  2. DL 4125 10:10 am, 0% cancelled 92%
  3. DL 4153 2:45 pm, 0% cancelled 84%
  4. DL 4043 5:00 pm, 0% cancelled 80%
  5. DL 4131 8:25 pm, 0% cancelled 80%
  1. AS 682 7:28 am, 0% cancelled 96%
  2. AS 1380 10:01 am, 0% cancelled 67%
  3. AS 1428 11:55 am, 0% cancelled 74%
  4. AS 681 2:16 pm, 1% cancelled 71%
  5. AS 2401 2:44 pm, 0% cancelled 45%
  6. AS 638 7:23 pm, 1% cancelled 70%
  7. AS 1427 8:55 pm, 2% cancelled 63%
  1. WN 3629 5:00 am, 0% cancelled 98%
  2. WN 3542 5:30 am, 0% cancelled 93%
  3. WN 3630 7:35 am, 0% cancelled 89%
  4. WN 3543 9:45 am, 0% cancelled 85%
  5. WN 3544 3:25 pm, 0% cancelled 71%
  6. WN 3566 6:05 pm, 0% cancelled 60%
  7. WN 636 9:40 pm, 0% cancelled 51%

What time should I fly? The 5 am departures.

95% landed on time; at 11 am, 70%. Tuesday was the best day, Thursday the worst.

Flight records,

DepartsLanded on time
5 am95%
6 am93%
7 am90%
8 am92%
9 am86%
10 am83%
11 am70%
12 pm87%
1 pm77%
2 pm80%
3 pm79%
4 pm79%
5 pm80%
6 pm72%
7 pm76%
8 pm76%
9 pm74%

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.