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Flight records through . Security counts through .

Which ONT to SFO flight is punctual? United 2363, 6 am.

88% on time across 92 flights in the last 3 months, never cancelled.

Find your flightONT security
DepartsFlightOn time
6:00 amUA 236388%
1:50 pmUA 137537%
8:58 amF9 115931%
6:39 pmUA 562416%
8:36 pmF9 26779%
5 of 5 regular flights, ranked by arrivals on time, June to August 2026.

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

United landed on time 65% of the time, Frontier 37%.

Flight records,

  • United

    65%

    on time

    0.5% cancelled

  • Frontier

    37%

    on time

    1.9% cancelled

When do the flights leave? 5 regular flights, 6 am to 8:36 pm.

F9 1159 was cancelled most often, 2% of the time.

Flight records,

  1. UA 2363 6:00 am, 0% cancelled 88%
  2. UA 1375 1:50 pm, 0% cancelled 37%
  3. UA 5624 6:39 pm, 0% cancelled 16%
  1. F9 1159 8:58 am, 2% cancelled 31%
  2. F9 2677 8:36 pm, 0% cancelled 9%

What time should I fly? The 6 am departures.

90% landed on time; at 8 pm, 14%. Saturday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
6 am90%
8 am30%
9 am51%
10 am47%
11 am36%
1 pm65%
6 pm45%
8 pm14%
10 pm55%

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.