Airports AirportPace Search

Flight records through . Security counts through .

Which ORD to STL flight is punctual? American 4104, 7:04 am.

95% on time across 64 flights in the last 3 months, never cancelled.

ORD to STL flights that landed on time most often
DepartsFlightOn time
7:04 amAA 410495%
10:40 amUA 135589%
7:05 amUA 595884%
7:00 amAA 356882%
9:00 amUA 461382%
12:39 pmAA 381581%
12:55 pmUA 458176%
3:03 pmAA 453775%
8 of 26 regular flights, ranked by arrivals on time, June to August 2026.

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

American landed on time 67% of the time, United 67%.

Flight records,

  • American

    67%

    on time

    3.6% cancelled

  • United

    67%

    on time

    2.8% cancelled

When do the flights leave? 26 regular flights, 7 am to 11 pm.

AA 3620 was cancelled most often, 11% of the time.

Flight records,

  1. AA 3568 7:00 am, 0% cancelled 82%
  2. AA 4104 7:04 am, 0% cancelled 95%
  3. AA 6355 11:29 am, 4% cancelled 56%
  4. AA 6352 11:45 am, 3% cancelled 68%
  5. AA 3815 12:39 pm, 2% cancelled 81%
  6. AA 3620 3:00 pm, 11% cancelled 59%
  7. AA 4537 3:03 pm, 5% cancelled 75%
  8. AA 3570 5:59 pm, 11% cancelled 48%
  9. AA 4144 6:17 pm, 8% cancelled 52%
  10. AA 1004 11:00 pm, 8% cancelled 49%
  11. AA 3069 11:00 pm, 4% cancelled 48%
  1. UA 5958 7:05 am, 0% cancelled 84%
  2. UA 4613 9:00 am, 0% cancelled 82%
  3. UA 775 10:29 am, 0% cancelled 62%
  4. UA 1355 10:40 am, 3% cancelled 89%
  5. UA 4581 12:55 pm, 4% cancelled 76%
  6. UA 4479 1:30 pm, 0% cancelled 70%
  7. UA 2000 2:20 pm, 0% cancelled 66%
  8. UA 4416 3:59 pm, 5% cancelled 62%
  9. UA 4552 4:00 pm, 4% cancelled 62%
  10. UA 4518 4:45 pm, 8% cancelled 58%
  11. UA 4412 5:55 pm, 4% cancelled 56%
  12. UA 2144 7:55 pm, 0% cancelled 52%
  13. UA 1032 8:29 pm, 0% cancelled 48%
  14. UA 4472 10:00 pm, 10% cancelled 60%
  15. UA 4576 10:00 pm, 6% cancelled 66%

What time should I fly? The 7 am departures.

84% landed on time; at 5 pm, 52%. Tuesday was the best day, Sunday the worst.

Flight records,

Share of ORD to STL flights landing less than 15 minutes late, by scheduled departure hour
DepartsBarLanded on time
6 am71%
7 am84%
8 am69%
9 am72%
10 am73%
11 am67%
12 pm73%
1 pm75%
2 pm67%
3 pm73%
4 pm66%
5 pm52%
6 pm62%
7 pm59%
8 pm58%
9 pm63%
10 pm61%
11 pm52%

When is ORD security busiest? 5 to 7 am, then 12 to 4 pm.

Calmest around 10 am. Chicago ORD security, hour by hour.

Security counts,

People screened per hour at ORD checkpoints, by weekday and hour; choose a cell to read it
4a8a12p4p8p
Mon
Tue
Wed
Thu
Fri
Sat
Sun
People screened per hour at ORD checkpoints, by weekday and hour; choose a cell to read it
MonTueWedThuFriSatSun
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p

Friday, 6 am

7,840

people screened, all terminals.