Airports AirportPace Search

Flight records through . Security counts through .

Which IAD to SAN flight is punctual? United 1930, 8:26 am.

91% on time across 92 flights in the last 3 months, 1.1% cancelled.

Find your flightIAD security
DepartsFlightOn time
8:26 amUA 193091%
12:40 pmUA 216379%
6:00 pmUA 205468%
7:53 pmAS 20158%
4 of 4 regular flights, ranked by arrivals on time, June to August 2026.

Which airline is most reliable? United, by a distance.

United landed on time 85% of the time, Alaska 72%.

Flight records,

  • United

    85%

    on time

    0.7% cancelled

  • Alaska

    72%

    on time

    0.8% cancelled

When do the flights leave? 4 regular flights, 8:26 am to 7:53 pm.

AS 201 was cancelled most often, 2% of the time.

Flight records,

  1. UA 1930 8:26 am, 1% cancelled 91%
  2. UA 2163 12:40 pm, 0% cancelled 79%
  3. UA 2054 6:00 pm, 2% cancelled 68%
  1. AS 201 7:53 pm, 2% cancelled 58%

What time should I fly? The 9 am departures.

93% landed on time; at 7 pm, 62%. Saturday was the best day, Thursday the worst.

Flight records,

DepartsLanded on time
8 am92%
9 am93%
12 pm85%
5 pm80%
6 pm74%
7 pm62%

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.