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Flight records through . Security counts through .

Which SFO to BOS flight is punctual? United 1015, 7 am.

93% on time across 60 flights in the last 3 months, 1.7% cancelled.

Find your flightSFO security
DepartsFlightOn time
7:00 amUA 101593%
7:10 amDL 40087%
6:00 amB6 43486%
8:10 amUA 264785%
11:05 pmUA 166584%
4:15 pmUA 200182%
9:25 pmUA 79679%
10:05 amUA 235671%
8 of 19 regular flights, ranked by arrivals on time, June to August 2026.

Which airline is most reliable? United, ahead of Delta.

United landed on time 78% of the time, Delta 70%.

Flight records,

  • United

    78%

    on time

    1.1% cancelled

  • Delta

    70%

    on time

    1.6% cancelled

  • JetBlue

    69%

    on time

    2.8% cancelled

When do the flights leave? 19 regular flights, 6 am to 11:48 pm.

B6 434 was cancelled most often, 5% of the time.

Flight records,

  1. UA 1015 7:00 am, 2% cancelled 93%
  2. UA 2647 8:10 am, 2% cancelled 85%
  3. UA 2356 10:05 am, 0% cancelled 71%
  4. UA 1372 12:25 pm, 0% cancelled 63%
  5. UA 2634 2:07 pm, 0% cancelled 62%
  6. UA 2001 4:15 pm, 0% cancelled 82%
  7. UA 796 9:25 pm, 0% cancelled 79%
  8. UA 1665 11:05 pm, 1% cancelled 84%
  1. DL 400 7:10 am, 2% cancelled 87%
  2. DL 977 12:20 pm, 0% cancelled 52%
  3. DL 860 3:00 pm, 0% cancelled 38%
  4. DL 1655 10:10 pm, 2% cancelled 64%
  1. B6 434 6:00 am, 5% cancelled 86%
  2. B6 1734 10:25 am, 2% cancelled 60%
  3. B6 1534 11:26 am, 4% cancelled 59%
  4. B6 1634 12:30 pm, 4% cancelled 52%
  5. B6 734 3:18 pm, 5% cancelled 51%
  6. B6 134 9:44 pm, 2% cancelled 48%
  7. B6 1034 11:48 pm, 2% cancelled 54%

What time should I fly? The 7 am departures.

86% landed on time; at 9 am, 56%. Saturday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
6 am85%
7 am86%
8 am79%
9 am56%
10 am64%
11 am63%
12 pm63%
1 pm68%
2 pm72%
3 pm66%
4 pm84%
8 pm80%
9 pm74%
10 pm76%
11 pm74%

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.