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Flight records through . Security counts through .

Which ONT to IAH flight is punctual? United 1936, 5:45 am.

89% on time across 80 flights in the last 3 months, 1.3% cancelled.

Find your flightONT security

  • UA 1936

    89%

    on time

    5:45 am

    1% cancelled

  • F9 2412

    82%

    on time

    9:32 am

    3% cancelled

  • F9 3132

    62%

    on time

    5:43 pm

    8% cancelled

3 regular flights, June to August 2026.

Which airline is most reliable? United, by a distance.

United landed on time 91% of the time, Frontier 76%.

Flight records,

  • United

    91%

    on time

    0.6% cancelled

  • Frontier

    76%

    on time

    2.3% cancelled

When do the flights leave? 3 regular flights, 5:45 am to 5:43 pm.

F9 3132 was cancelled most often, 8% of the time.

Flight records,

  1. UA 1936 5:45 am, 1% cancelled 89%
  1. F9 2412 9:32 am, 3% cancelled 82%
  2. F9 3132 5:43 pm, 8% cancelled 62%

What time should I fly? The 6 am departures.

91% landed on time; at 5 pm, 67%. Tuesday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
5 am89%
6 am91%
9 am84%
5 pm67%
8 pm70%

When is ONT security busiest? 5 am, every morning.

Calmest around 5 pm. Ontario 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, 5 am

1,420

people screened, all terminals.