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Flight records through . Security counts through .

Which SEA to SLC flight is punctual? Delta 1128, 5:30 am.

96% on time across 92 flights in the last 3 months, 1.1% cancelled.

Find your flightSEA security
DepartsFlightOn time
5:30 amDL 112896%
9:30 amDL 101694%
7:15 amDL 285891%
7:18 amAS 29290%
8:48 amAS 36084%
11:05 amDL 126583%
1:30 pmDL 112076%
4:47 pmAS 37374%
8 of 14 regular flights, ranked by arrivals on time, June to August 2026.

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

Delta landed on time 86% of the time, Alaska 79%.

Flight records,

  • Delta

    86%

    on time

    0.5% cancelled

  • Alaska

    79%

    on time

    1.0% cancelled

When do the flights leave? 14 regular flights, 5:30 am to 8:33 pm.

AS 292 was cancelled most often, 1% of the time.

Flight records,

  1. DL 1128 5:30 am, 1% cancelled 96%
  2. DL 2858 7:15 am, 0% cancelled 91%
  3. DL 1016 9:30 am, 0% cancelled 94%
  4. DL 1265 11:05 am, 0% cancelled 83%
  5. DL 1120 1:30 pm, 0% cancelled 76%
  6. DL 1165 5:59 pm, 0% cancelled 74%
  7. DL 1239 7:50 pm, 0% cancelled 73%
  1. AS 292 7:18 am, 1% cancelled 90%
  2. AS 360 8:48 am, 0% cancelled 84%
  3. AS 733 11:51 am, 0% cancelled 58%
  4. AS 368 2:45 pm, 0% cancelled 61%
  5. AS 373 4:47 pm, 0% cancelled 74%
  6. AS 3298 7:07 pm, 0% cancelled 71%
  7. AS 1459 8:33 pm, 0% cancelled 39%

What time should I fly? The 5 am departures.

93% landed on time; at 2 pm, 74%. Tuesday was the best day, Thursday the worst.

Flight records,

DepartsLanded on time
5 am93%
7 am93%
8 am87%
9 am87%
10 am92%
11 am77%
12 pm81%
1 pm82%
2 pm74%
3 pm79%
4 pm80%
5 pm81%
6 pm80%
7 pm78%
8 pm75%

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.