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Flight records through . Security counts through .

Which ONT to SEA flight is punctual? Alaska 607, 6:02 am.

96% on time across 92 flights in the last 3 months, never cancelled.

Find your flightONT security
DepartsFlightOn time
6:02 amAS 60796%
6:20 amDL 381694%
11:56 amDL 407088%
6:01 pmDL 403185%
2:05 pmAS 56778%
12:04 pmAS 65476%
4:49 pmF9 227573%
9:20 pmAS 59462%
8 of 9 regular flights, ranked by arrivals on time, June to August 2026.

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

Delta landed on time 91% of the time, Alaska 81%.

Flight records,

  • Delta

    91%

    on time

    0.3% cancelled

  • Alaska

    81%

    on time

    1.7% cancelled

When do the flights leave? 9 regular flights, 6:02 am to 9:20 pm.

F9 2275 was cancelled most often, 4% of the time.

Flight records,

  1. DL 3816 6:20 am, 0% cancelled 94%
  2. DL 4070 11:56 am, 0% cancelled 88%
  3. DL 4031 6:01 pm, 0% cancelled 85%
  1. AS 607 6:02 am, 0% cancelled 96%
  2. AS 654 12:04 pm, 3% cancelled 76%
  3. AS 567 2:05 pm, 3% cancelled 78%
  4. AS 575 5:26 pm, 1% cancelled 60%
  5. AS 594 9:20 pm, 0% cancelled 62%

What time should I fly? The 7 am departures.

94% landed on time; at 9 pm, 60%. Tuesday was the best day, Thursday the worst.

Flight records,

DepartsLanded on time
6 am93%
7 am94%
10 am88%
11 am90%
12 pm80%
1 pm79%
2 pm83%
3 pm88%
4 pm75%
5 pm82%
6 pm80%
7 pm68%
9 pm60%

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.