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Flight records through . Security counts through .

Which ATL to STL flight is punctual? Delta 1571, 7:43 am.

97% on time across 73 flights in the last 3 months, never cancelled.

Find your flightATL security
DepartsFlightOn time
7:43 amDL 157197%
6:50 amWN 393796%
9:04 amDL 140096%
7:10 amWN 24489%
11:05 amDL 56686%
1:56 pmDL 270084%
11:10 pmDL 140383%
1:10 pmWN 24078%
8 of 14 regular flights, ranked by arrivals on time, June to August 2026.

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

Delta landed on time 83% of the time, Southwest 79%.

Flight records,

  • Delta

    83%

    on time

    1.9% cancelled

  • Southwest

    79%

    on time

    0.4% cancelled

When do the flights leave? 14 regular flights, 6:50 am to 11:10 pm.

WN 244 was cancelled most often, 4% of the time.

Flight records,

  1. DL 1571 7:43 am, 0% cancelled 97%
  2. DL 1400 9:04 am, 0% cancelled 96%
  3. DL 566 11:05 am, 0% cancelled 86%
  4. DL 2700 1:56 pm, 0% cancelled 84%
  5. DL 1799 3:34 pm, 0% cancelled 76%
  6. DL 1393 5:10 pm, 1% cancelled 69%
  7. DL 2833 9:33 pm, 2% cancelled 71%
  8. DL 1403 11:10 pm, 2% cancelled 83%
  1. WN 3937 6:50 am, 0% cancelled 96%
  2. WN 244 7:10 am, 4% cancelled 89%
  3. WN 240 1:10 pm, 0% cancelled 78%
  4. WN 2218 7:15 pm, 0% cancelled 46%
  5. WN 241 8:20 pm, 0% cancelled 17%

What time should I fly? The 6 am departures.

93% landed on time; at 4 pm, 60%. Wednesday was the best day, Sunday the worst.

Flight records,

DepartsLanded on time
6 am93%
7 am90%
8 am86%
9 am87%
10 am82%
11 am88%
12 pm76%
1 pm85%
2 pm81%
3 pm84%
4 pm60%
5 pm74%
6 pm83%
7 pm66%
8 pm62%
9 pm79%
10 pm83%
11 pm79%

When is ATL security busiest? 6 to 8 am, then 2 pm.

Calmest around 11 am. Atlanta 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

Monday, 7 am

7,630

people screened, all terminals.