Airports AirportPace Search

Flight records through . Security counts through .

Which IAD to BUF flight is punctual? United 3514, 8:25 am.

89% on time across 27 flights in the last 3 months, 3.7% cancelled.

Find your flightIAD security
DepartsFlightOn time
8:25 amUA 351489%
12:59 pmUA 433578%
10:26 pmUA 351675%
10:26 pmUA 447474%
10:18 pmUA 448071%
5:30 pmUA 482366%
6 of 6 regular flights, ranked by arrivals on time, June to August 2026.

When do the flights leave? 6 regular flights, 8:25 am to 10:26 pm.

UA 4823 was cancelled most often, 10% of the time.

Flight records,

  1. UA 3514 8:25 am, 4% cancelled 89%
  2. UA 4335 12:59 pm, 3% cancelled 78%
  3. UA 4823 5:30 pm, 10% cancelled 66%
  4. UA 4480 10:18 pm, 0% cancelled 71%
  5. UA 3516 10:26 pm, 10% cancelled 75%
  6. UA 4474 10:26 pm, 0% cancelled 74%

What time should I fly? The 8 am departures.

88% landed on time; at 5 pm, 73%. Thursday was the best day, Sunday the worst.

Flight records,

DepartsLanded on time
8 am88%
12 pm80%
5 pm73%
10 pm75%

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.