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Flight records through . Security counts through .

Which SFO to DCA flight is punctual? United 1678, 8:20 am.

82% on time across 91 flights in the last 3 months, 1.1% cancelled.

Find your flightSFO security

  • UA 1678

    82%

    on time

    8:20 am

    1% cancelled

  • AS 8

    72%

    on time

    9:39 am

    0% cancelled

  • UA 2386

    50%

    on time

    2:18 pm

    0% cancelled

3 regular flights, June to August 2026.

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

United landed on time 78% of the time, Alaska 77%.

Flight records,

  • United

    78%

    on time

    0.6% cancelled

  • Alaska

    77%

    on time

    0.8% cancelled

When do the flights leave? 3 regular flights, 8:20 am to 2:18 pm.

UA 1678 was cancelled most often, 1% of the time.

Flight records,

  1. UA 1678 8:20 am, 1% cancelled 82%
  2. UA 2386 2:18 pm, 0% cancelled 50%
  1. AS 8 9:39 am, 0% cancelled 72%

What time should I fly? The 8 am departures.

86% landed on time; at 2 pm, 59%. Saturday was the best day, Friday the worst.

Flight records,

DepartsLanded on time
8 am86%
9 am77%
1 pm76%
2 pm59%

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.