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Flight records through . Security counts through .

Which IAD to SFO flight is punctual? United 1147, 8:35 am.

82% on time across 92 flights in the last 3 months, never cancelled.

Find your flightIAD security
DepartsFlightOn time
8:35 amUA 114782%
6:30 amUA 109576%
2:51 pmUA 286276%
10:21 pmUA 36775%
9:45 amUA 63575%
12:40 pmUA 143473%
8:00 pmUA 207547%
5:55 pmUA 175741%
8 of 8 regular flights, ranked by arrivals on time, June to August 2026.

When do the flights leave? 8 regular flights, 6:30 am to 10:21 pm.

UA 1757 was cancelled most often, 1% of the time.

Flight records,

  1. UA 1095 6:30 am, 0% cancelled 76%
  2. UA 1147 8:35 am, 0% cancelled 82%
  3. UA 635 9:45 am, 0% cancelled 75%
  4. UA 1434 12:40 pm, 0% cancelled 73%
  5. UA 2862 2:51 pm, 0% cancelled 76%
  6. UA 1757 5:55 pm, 1% cancelled 41%
  7. UA 2075 8:00 pm, 0% cancelled 47%
  8. UA 367 10:21 pm, 0% cancelled 75%

What time should I fly? The 6 am departures.

85% landed on time; at 8 pm, 48%. Tuesday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
6 am85%
8 am84%
9 am80%
12 pm78%
2 pm82%
3 pm78%
4 pm84%
5 pm50%
6 pm68%
7 pm82%
8 pm48%
10 pm82%

When is IAD security busiest? 3 to 4 pm daily.

Calmest around 9 am. Washington IAD 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, 4 pm

4,000

people screened, all terminals.