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Flight records through . Security counts through .

Which IAH to DFW flight is punctual? American 2551, 5:02 am.

94% on time across 92 flights in the last 3 months, 1.1% cancelled.

Find your flightIAH security
DepartsFlightOn time
5:02 amAA 255194%
12:05 pmUA 612090%
6:02 amAA 70089%
7:00 amAA 302688%
9:03 amAA 501788%
9:31 amUA 207483%
7:00 amAA 300283%
7:23 amUA 35883%
8 of 26 regular flights, ranked by arrivals on time, June to August 2026.

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

United landed on time 76% of the time, American 74%.

Flight records,

  • United

    76%

    on time

    1.4% cancelled

  • American

    74%

    on time

    3.1% cancelled

When do the flights leave? 26 regular flights, 5:02 am to 9:37 pm.

AA 1929 was cancelled most often, 11% of the time.

Flight records,

  1. UA 358 7:23 am, 0% cancelled 83%
  2. UA 2074 9:31 am, 0% cancelled 83%
  3. UA 4024 12:05 pm, 0% cancelled 80%
  4. UA 6120 12:05 pm, 0% cancelled 90%
  5. UA 1388 2:46 pm, 0% cancelled 65%
  6. UA 1439 4:20 pm, 0% cancelled 67%
  7. UA 1535 6:05 pm, 0% cancelled 57%
  8. UA 1949 7:59 pm, 0% cancelled 62%
  9. UA 1183 9:37 pm, 0% cancelled 70%
  1. AA 2551 5:02 am, 1% cancelled 94%
  2. AA 700 6:02 am, 4% cancelled 89%
  3. AA 3002 7:00 am, 2% cancelled 83%
  4. AA 3026 7:00 am, 0% cancelled 88%
  5. AA 5017 9:03 am, 0% cancelled 88%
  6. AA 3193 9:27 am, 0% cancelled 77%
  7. AA 1407 10:26 am, 0% cancelled 82%
  8. AA 1916 10:39 am, 3% cancelled 62%
  9. AA 3591 11:24 am, 6% cancelled 62%
  10. AA 860 11:28 am, 0% cancelled 82%
  11. AA 2512 2:04 pm, 4% cancelled 47%
  12. AA 1397 2:09 pm, 0% cancelled 52%
  13. AA 3583 4:18 pm, 2% cancelled 73%
  14. AA 1393 4:21 pm, 0% cancelled 52%
  15. AA 2438 6:49 pm, 0% cancelled 39%
  16. AA 1929 6:53 pm, 11% cancelled 28%
  17. AA 4923 7:49 pm, 7% cancelled 69%

What time should I fly? The 5 am departures.

87% landed on time; at 7 pm, 58%. Wednesday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
5 am87%
6 am86%
7 am83%
8 am77%
9 am81%
10 am76%
11 am76%
12 pm80%
1 pm66%
2 pm70%
4 pm70%
6 pm61%
7 pm58%
8 pm72%
9 pm79%
10 pm85%

When is IAH security busiest? 6 am, then 8 am.

Calmest around 9 am. Houston IAH 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, 6 am

4,540

people screened, all terminals.