Airports AirportPace Search

Flight records through . Security counts through .

Which IAD to BOS flight is punctual? United 641, 8:35 am.

92% on time across 92 flights in the last 3 months, 1.1% cancelled.

Find your flightIAD security
DepartsFlightOn time
8:35 amUA 64192%
12:55 pmUA 139275%
10:10 pmUA 75571%
10:00 amUA 355268%
5:25 pmUA 68860%
3:30 pmUA 361548%
6 of 6 regular flights, ranked by arrivals on time, June to August 2026.

When do the flights leave? 6 regular flights, 8:35 am to 10:10 pm.

UA 3615 was cancelled most often, 26% of the time.

Flight records,

  1. UA 641 8:35 am, 1% cancelled 92%
  2. UA 3552 10:00 am, 14% cancelled 68%
  3. UA 1392 12:55 pm, 2% cancelled 75%
  4. UA 3615 3:30 pm, 26% cancelled 48%
  5. UA 688 5:25 pm, 2% cancelled 60%
  6. UA 755 10:10 pm, 2% cancelled 71%

What time should I fly? The 8 am departures.

93% landed on time; at 3 pm, 30%. Saturday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
8 am93%
9 am87%
10 am81%
12 pm78%
3 pm30%
5 pm59%
10 pm78%

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.