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Flight records through . Security counts through .

Which STL to LAS flight is punctual? Southwest 3845, 5:55 am.

96% on time across 28 flights in the last 3 months, never cancelled.

Find your flightSTL security
DepartsFlightOn time
5:55 amWN 384596%
5:35 amWN 393488%
1:45 pmWN 384675%
9:15 amWN 232774%
9:55 pmWN 393658%
7:10 pmF9 201757%
2:20 pmWN 435955%
2:56 pmF9 310754%
8 of 10 regular flights, ranked by arrivals on time, June to August 2026.

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

Southwest landed on time 74% of the time, Frontier 73%.

Flight records,

  • Southwest

    74%

    on time

    0.2% cancelled

  • Frontier

    73%

    on time

    2.8% cancelled

When do the flights leave? 10 regular flights, 5:35 am to 9:55 pm.

F9 3107 was cancelled most often, 12% of the time.

Flight records,

  1. WN 3934 5:35 am, 0% cancelled 88%
  2. WN 3845 5:55 am, 0% cancelled 96%
  3. WN 2327 9:15 am, 0% cancelled 74%
  4. WN 3846 1:45 pm, 0% cancelled 75%
  5. WN 4359 2:20 pm, 0% cancelled 55%
  6. WN 3847 6:25 pm, 0% cancelled 30%
  7. WN 3935 7:45 pm, 2% cancelled 17%
  8. WN 3936 9:55 pm, 0% cancelled 58%
  1. F9 3107 2:56 pm, 12% cancelled 54%
  2. F9 2017 7:10 pm, 3% cancelled 57%

What time should I fly? The 5 am departures.

96% landed on time; at 7 pm, 55%. Tuesday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
5 am96%
6 am92%
7 am90%
8 am87%
9 am82%
10 am81%
12 pm84%
1 pm71%
2 pm68%
3 pm76%
4 pm64%
5 pm80%
6 pm56%
7 pm55%
8 pm72%
9 pm59%
10 pm57%

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.