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Flight records through . Security counts through .

Which SFO to SEA flight is punctual? United 1708, 7 am.

92% on time across 63 flights in the last 3 months, never cancelled.

Find your flightSFO security
DepartsFlightOn time
7:00 amUA 170892%
5:55 amDL 272190%
6:00 amAS 58090%
6:03 amAS 62087%
7:03 amAS 6885%
12:10 pmUA 274475%
2:20 pmAS 79070%
6:25 pmUA 261167%
8 of 25 regular flights, ranked by arrivals on time, June to August 2026.

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

United landed on time 75% of the time, Delta 73%.

Flight records,

  • United

    75%

    on time

    0.5% cancelled

  • Delta

    73%

    on time

    1.5% cancelled

  • Alaska

    68%

    on time

    1.3% cancelled

When do the flights leave? 25 regular flights, 5:55 am to 10:59 pm.

AS 580 was cancelled most often, 5% of the time.

Flight records,

  1. UA 1708 7:00 am, 0% cancelled 92%
  2. UA 781 10:05 am, 0% cancelled 48%
  3. UA 2192 10:15 am, 0% cancelled 47%
  4. UA 2744 12:10 pm, 0% cancelled 75%
  5. UA 1265 2:00 pm, 0% cancelled 57%
  6. UA 2279 4:27 pm, 0% cancelled 64%
  7. UA 2611 6:25 pm, 0% cancelled 67%
  8. UA 1577 6:28 pm, 1% cancelled 64%
  9. UA 1007 8:45 pm, 1% cancelled 58%
  10. UA 5579 10:59 pm, 0% cancelled 58%
  1. DL 2721 5:55 am, 2% cancelled 90%
  2. DL 2870 10:35 am, 1% cancelled 43%
  3. DL 1412 1:38 pm, 0% cancelled 65%
  4. DL 3707 5:36 pm, 0% cancelled 53%
  5. DL 3991 8:59 pm, 0% cancelled 55%
  1. AS 580 6:00 am, 5% cancelled 90%
  2. AS 620 6:03 am, 1% cancelled 87%
  3. AS 68 7:03 am, 0% cancelled 85%
  4. AS 1327 9:00 am, 1% cancelled 58%
  5. AS 656 10:18 am, 4% cancelled 25%
  6. AS 630 12:27 pm, 0% cancelled 25%
  7. AS 790 2:20 pm, 0% cancelled 70%
  8. AS 1340 3:50 pm, 2% cancelled 54%
  9. AS 758 5:38 pm, 0% cancelled 50%
  10. AS 591 8:28 pm, 0% cancelled 54%

What time should I fly? The 5 am departures.

94% landed on time; at 8 am, 58%. Saturday was the best day, Thursday the worst.

Flight records,

DepartsLanded on time
5 am94%
6 am90%
7 am88%
8 am58%
9 am76%
10 am59%
11 am78%
12 pm64%
1 pm76%
2 pm72%
3 pm63%
4 pm74%
5 pm58%
6 pm72%
7 pm74%
8 pm63%
9 pm63%
10 pm70%

When is SFO security busiest? 7 am, then 9 am to noon.

Calmest around 4 pm. San Francisco 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

Thursday, 10 am

5,960

people screened, all terminals.