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Flight records through . Security counts through .

Which BUF to IAD flight is punctual? United 4179, 10:34 am.

92% on time across 24 flights in the last 3 months, never cancelled.

Find your flightBUF security
DepartsFlightOn time
10:34 amUA 417992%
6:15 amUA 366885%
10:34 amUA 343082%
10:30 amUA 419276%
7:52 pmUA 427074%
3:00 pmUA 429171%
6 of 6 regular flights, ranked by arrivals on time, June to August 2026.

When do the flights leave? 6 regular flights, 6:15 am to 7:52 pm.

UA 4270 was cancelled most often, 11% of the time.

Flight records,

  1. UA 3668 6:15 am, 4% cancelled 85%
  2. UA 4192 10:30 am, 0% cancelled 76%
  3. UA 3430 10:34 am, 0% cancelled 82%
  4. UA 4179 10:34 am, 0% cancelled 92%
  5. UA 4291 3:00 pm, 4% cancelled 71%
  6. UA 4270 7:52 pm, 11% cancelled 74%

What time should I fly? The 6 am departures.

88% landed on time; at 3 pm, 71%. Saturday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
6 am88%
9 am81%
10 am86%
2 pm76%
3 pm71%
7 pm79%

When is BUF security busiest? 5 am, every morning.

Calmest around 12 pm. Buffalo 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

Friday, 5 am

1,130

people screened, all terminals.