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Flight records through . Security counts through .

Which IAD to DAY flight is punctual? United 4327, 8:15 am.

84% on time across 45 flights in the last 3 months, never cancelled.

Find your flightIAD security
DepartsFlightOn time
8:15 amUA 432784%
8:15 amUA 418879%
12:44 pmUA 424173%
5:15 pmUA 427472%
4 of 4 regular flights, ranked by arrivals on time, June to August 2026.

When do the flights leave? 4 regular flights, 8:15 am to 5:15 pm.

UA 4274 was cancelled most often, 5% of the time.

Flight records,

  1. UA 4188 8:15 am, 2% cancelled 79%
  2. UA 4327 8:15 am, 0% cancelled 84%
  3. UA 4241 12:44 pm, 2% cancelled 73%
  4. UA 4274 5:15 pm, 5% cancelled 72%

What time should I fly? The 8 am departures.

83% landed on time; at 5 pm, 77%. Thursday was the best day, Sunday the worst.

Flight records,

DepartsLanded on time
8 am83%
12 pm78%
5 pm77%

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.