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Flight records through . Security counts through .

Which STL to SFO flight is punctual? Southwest 4157, 8:25 am.

35% on time across 20 flights in the last 3 months, never cancelled.

Find your flightSTL security

  • WN 4157

    35%

    on time

    8:25 am

    0% cancelled

  • UA 2482

    28%

    on time

    7:23 pm

    0% cancelled

  • WN 3982

    22%

    on time

    8:15 am

    0% cancelled

3 regular flights, June to August 2026.

Which airline is most reliable? United and Southwest, neck and neck.

United landed on time 58% of the time, Southwest 56%.

Flight records,

  • United

    58%

    on time

    1.2% cancelled

  • Southwest

    56%

    on time

    0.0% cancelled

When do the flights leave? 3 regular flights, 8:15 am to 7:23 pm.

None was cancelled in the last 3 months.

Flight records,

  1. UA 2482 7:23 pm, 0% cancelled 28%
  1. WN 3982 8:15 am, 0% cancelled 22%
  2. WN 4157 8:25 am, 0% cancelled 35%

What time should I fly? The 10 am departures.

91% landed on time; at 7 pm, 28%. Tuesday was the best day, Thursday the worst.

Flight records,

DepartsLanded on time
6 am71%
8 am43%
9 am63%
10 am91%
11 am80%
5 pm74%
7 pm28%

When is STL security busiest? 5 am, then 7 am.

Calmest around 5 pm. St. Louis 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

1,760

people screened, all terminals.