Airports AirportPace Search

Flight records through . Security counts through .

Which DEN to COS flight is punctual? Southwest 3419, 8 am.

98% on time across 44 flights in the last 3 months, never cancelled.

Find your flightDEN security
DepartsFlightOn time
8:00 amWN 341998%
12:18 pmUA 561496%
9:45 amUA 530684%
7:45 amUA 524684%
11:09 pmUA 474578%
11:32 amUA 111176%
1:48 pmUA 180371%
3:35 pmUA 554671%
8 of 19 regular flights, ranked by arrivals on time, June to August 2026.

Which airline is most reliable? United and Southwest, neck and neck.

United landed on time 76% of the time, Southwest 74%.

Flight records,

  • United

    76%

    on time

    1.5% cancelled

  • Southwest

    74%

    on time

    0.4% cancelled

When do the flights leave? 19 regular flights, 7:45 am to 11:09 pm.

WN 4346 was cancelled most often, 10% of the time.

Flight records,

  1. UA 5246 7:45 am, 0% cancelled 84%
  2. UA 5306 9:45 am, 0% cancelled 84%
  3. UA 4734 11:21 am, 0% cancelled 69%
  4. UA 1111 11:32 am, 0% cancelled 76%
  5. UA 5614 12:18 pm, 0% cancelled 96%
  6. UA 4775 1:30 pm, 0% cancelled 68%
  7. UA 1803 1:48 pm, 4% cancelled 71%
  8. UA 5546 3:35 pm, 0% cancelled 71%
  9. UA 5308 4:55 pm, 1% cancelled 46%
  10. UA 5861 5:55 pm, 1% cancelled 44%
  11. UA 4793 7:05 pm, 1% cancelled 56%
  12. UA 5669 7:50 pm, 4% cancelled 66%
  13. UA 4744 8:30 pm, 0% cancelled 30%
  14. UA 4650 9:10 pm, 1% cancelled 70%
  15. UA 4745 11:09 pm, 3% cancelled 78%
  1. WN 3419 8:00 am, 0% cancelled 98%
  2. WN 1228 1:20 pm, 0% cancelled 56%
  3. WN 3811 8:55 pm, 2% cancelled 28%
  4. WN 4346 8:55 pm, 10% cancelled 20%

What time should I fly? The 8 am departures.

92% landed on time; at 8 pm, 58%. Tuesday was the best day, Friday the worst.

Flight records,

DepartsLanded on time
7 am84%
8 am92%
9 am85%
10 am83%
11 am78%
12 pm90%
1 pm79%
2 pm77%
3 pm78%
4 pm67%
5 pm64%
6 pm64%
7 pm70%
8 pm58%
9 pm74%
10 pm78%
11 pm85%

When is DEN security busiest? 8 to 9 every morning.

Calmest around 5 pm. Denver 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, 9 am

6,760

people screened, all terminals.