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Flight records through . Security counts through .

Which IAD to ROA flight is punctual? United 4612, 12:40 pm.

90% on time across 40 flights in the last 3 months, 2.5% cancelled.

Find your flightIAD security
DepartsFlightOn time
12:40 pmUA 461290%
8:30 amUA 436887%
12:45 pmUA 483177%
10:30 pmUA 489777%
4 of 4 regular flights, ranked by arrivals on time, June to August 2026.

When do the flights leave? 4 regular flights, 8:30 am to 10:30 pm.

UA 4897 was cancelled most often, 3% of the time.

Flight records,

  1. UA 4368 8:30 am, 1% cancelled 87%
  2. UA 4612 12:40 pm, 2% cancelled 90%
  3. UA 4831 12:45 pm, 3% cancelled 77%
  4. UA 4897 10:30 pm, 3% cancelled 77%

What time should I fly? The 8 am departures.

84% landed on time; at 6 pm, 72%. Saturday was the best day, Friday the worst.

Flight records,

DepartsLanded on time
8 am84%
12 pm82%
5 pm81%
6 pm72%
10 pm81%

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.