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Flight records through . Security counts through .

Which IAH to DCA flight is punctual? United 512, 7:45 am.

95% on time across 20 flights in the last 3 months, never cancelled.

Find your flightIAH security
DepartsFlightOn time
7:45 amUA 51295%
7:46 amUA 204794%
6:43 amAA 524789%
9:47 amUA 267085%
7:46 amUA 214083%
4:55 pmUA 135071%
11:55 amUA 65467%
8:52 amAA 559867%
8 of 19 regular flights, ranked by arrivals on time, June to August 2026.

Which airline is most reliable? United, ahead of American.

United landed on time 76% of the time, American 66%.

Flight records,

  • United

    76%

    on time

    0.7% cancelled

  • American

    66%

    on time

    6.4% cancelled

When do the flights leave? 19 regular flights, 6:43 am to 7:50 pm.

AA 5333 was cancelled most often, 21% of the time.

Flight records,

  1. UA 512 7:45 am, 0% cancelled 95%
  2. UA 2047 7:46 am, 0% cancelled 94%
  3. UA 2140 7:46 am, 0% cancelled 83%
  4. UA 2311 9:47 am, 0% cancelled 54%
  5. UA 2670 9:47 am, 0% cancelled 85%
  6. UA 654 11:55 am, 1% cancelled 67%
  7. UA 625 2:20 pm, 1% cancelled 59%
  8. UA 1350 4:55 pm, 0% cancelled 71%
  9. UA 2296 4:55 pm, 2% cancelled 53%
  10. UA 2332 4:55 pm, 0% cancelled 42%
  11. UA 1627 6:05 pm, 0% cancelled 58%
  12. UA 2224 7:50 pm, 0% cancelled 52%
  1. AA 5247 6:43 am, 6% cancelled 89%
  2. AA 5081 7:00 am, 18% cancelled 56%
  3. AA 5598 8:52 am, 7% cancelled 67%
  4. AA 5526 10:48 am, 14% cancelled 41%
  5. AA 5639 4:46 pm, 11% cancelled 37%
  6. AA 5026 4:50 pm, 17% cancelled 17%
  7. AA 5333 5:00 pm, 21% cancelled 31%

What time should I fly? The 7 am departures.

90% landed on time; at 5 pm, 53%. Saturday was the best day, Sunday the worst.

Flight records,

DepartsLanded on time
6 am84%
7 am90%
9 am79%
10 am68%
11 am72%
12 pm80%
2 pm73%
4 pm62%
5 pm53%
6 pm67%
7 pm68%
8 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.