Airports AirportPace Search

Flight records through . Security counts through .

Which SFO to SLC flight is punctual? Delta 1331, 5:50 am.

94% on time across 92 flights in the last 3 months, never cancelled.

Find your flightSFO security
DepartsFlightOn time
5:50 amDL 133194%
8:40 amUA 540592%
8:40 amUA 560592%
9:17 amUA 590890%
7:25 pmDL 265275%
1:56 pmUA 201769%
9:55 amDL 92056%
1:20 pmDL 90255%
8 of 14 regular flights, ranked by arrivals on time, June to August 2026.

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

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

Flight records,

  • Delta

    75%

    on time

    0.9% cancelled

  • United

    75%

    on time

    1.0% cancelled

When do the flights leave? 14 regular flights, 5:50 am to 8:54 pm.

F9 3394 was cancelled most often, 4% of the time.

Flight records,

  1. DL 1331 5:50 am, 0% cancelled 94%
  2. DL 920 9:55 am, 2% cancelled 56%
  3. DL 849 1:20 pm, 0% cancelled 50%
  4. DL 902 1:20 pm, 2% cancelled 55%
  5. DL 1088 5:25 pm, 1% cancelled 38%
  6. DL 2652 7:25 pm, 0% cancelled 75%
  1. UA 5405 8:40 am, 0% cancelled 92%
  2. UA 5605 8:40 am, 0% cancelled 92%
  3. UA 5908 9:17 am, 0% cancelled 90%
  4. UA 2017 1:56 pm, 0% cancelled 69%
  5. UA 520 2:08 pm, 0% cancelled 38%
  6. UA 543 4:11 pm, 0% cancelled 50%
  7. UA 5753 8:54 pm, 1% cancelled 52%

What time should I fly? The 5 am departures.

96% landed on time; at 4 pm, 60%. Tuesday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
5 am96%
6 am94%
8 am91%
9 am78%
12 pm74%
1 pm62%
2 pm66%
3 pm80%
4 pm60%
5 pm66%
6 pm80%
7 pm79%
8 pm65%

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.