Airports AirportPace Search

Flight records through . Security counts through .

Which IAD to PHL flight is punctual? United 3541, 12:55 pm.

88% on time across 40 flights in the last 3 months, never cancelled.

Find your flightIAD security
DepartsFlightOn time
12:55 pmUA 354188%
10:34 pmUA 349779%
8:35 amUA 401578%
1:05 pmUA 401676%
10:10 pmUA 350267%
5:35 pmUA 483658%
5:35 pmUA 453452%
7 of 7 regular flights, ranked by arrivals on time, June to August 2026.

When do the flights leave? 7 regular flights, 8:35 am to 10:34 pm.

UA 4534 was cancelled most often, 11% of the time.

Flight records,

  1. UA 4015 8:35 am, 3% cancelled 78%
  2. UA 3541 12:55 pm, 0% cancelled 88%
  3. UA 4016 1:05 pm, 5% cancelled 76%
  4. UA 4534 5:35 pm, 11% cancelled 52%
  5. UA 4836 5:35 pm, 8% cancelled 58%
  6. UA 3502 10:10 pm, 7% cancelled 67%
  7. UA 3497 10:34 pm, 8% cancelled 79%

What time should I fly? The 8 am departures.

83% landed on time; at 5 pm, 68%. Tuesday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
8 am83%
12 pm82%
1 pm76%
5 pm68%
10 pm74%

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.