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Flight records through . Security counts through .

Which ATL to COS flight is punctual? Delta 2427, 11:30 am.

87% on time across 92 flights in the last 3 months, never cancelled.

Find your flightATL security

  • DL 2427

    87%

    on time

    11:30 am

    0% cancelled

  • DL 971

    66%

    on time

    7:59 pm

    0% cancelled

2 regular flights, June to August 2026.

When do the flights leave? 2 regular flights, 11:30 am to 7:59 pm.

None was cancelled in the last 3 months.

Flight records,

  1. DL 2427 11:30 am, 0% cancelled 87%
  2. DL 971 7:59 pm, 0% cancelled 66%

What time should I fly? The 11 am departures.

83% landed on time; at 7 pm, 73%. Wednesday was the best day, Sunday the worst.

Flight records,

DepartsLanded on time
11 am83%
7 pm73%
8 pm75%

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.