Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.
Flight timing & delays
Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.
Times are local to the departure airport of each flight; both directions are combined.
US domestic sectors recorded by BTS
Source: the US BTS · Oct 12, 2024 → Jul 31, 2026
Lowest average delay07:00–08:002.8min · 561 recorded · 560 measured
Gap to highest-delay hour21.9min07:00 ↔ 14:00
Recorded flights5,929DEN–FLL
Departure hour
On-time departuresPartial coverage: only airlines that report on-time data to the US DOT
100.050.00.0
00:0003:0006:0009:0012:0015:0018:0021:00
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
24.712.30.0
00:0003:0006:0009:0012:0015:0018:0021:00
Hover, tap or focus a point to see its value, sample and source.
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
9354680
00:0003:0006:0009:0012:0015:0018:0021:00
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View the figures
Departure hour
On-time departures
Average departure delay
With departure time
Recorded flights
00:00
Fewer than 200 measured departures
—
7
7
01:00
No observations
—
—
—
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
Fewer than 200 measured departures
—
37
37
06:00
Fewer than 200 measured departures
—
51
51
07:00
92.7%
2.8 min
560
561
08:00
89.8%
3.1 min
411
413
09:00
88.1%
5.9 min
931
935
10:00
82.8%
8.5 min
586
588
11:00
Fewer than 200 measured departures
—
104
105
12:00
77.2%
17.0 min
407
407
13:00
76.2%
16.1 min
513
516
14:00
62.8%
24.7 min
320
320
15:00
75.8%
18.1 min
749
749
16:00
Fewer than 200 measured departures
—
82
82
17:00
75.7%
16.4 min
620
622
18:00
Fewer than 200 measured departures
—
129
129
19:00
Fewer than 200 measured departures
—
28
28
20:00
Fewer than 200 measured departures
—
119
120
21:00
Fewer than 200 measured departures
—
8
8
22:00
No observations
—
—
—
23:00
88.8%
3.5 min
251
251
Day of week
On-time departuresPartial coverage: only airlines that report on-time data to the US DOT
100.050.00.0
MonTueWedThuFriSatSun
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
17.48.70.0
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
9454730
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
82.3%
14.2 min
847
852
Tuesday
83.0%
9.3 min
742
746
Wednesday
84.7%
8.7 min
760
762
Thursday
81.4%
9.0 min
861
863
Friday
76.9%
13.1 min
866
869
Saturday
80.2%
11.8 min
945
945
Sunday
75.3%
17.4 min
892
892
Month of year
Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.
On-time departuresPartial coverage: only airlines that report on-time data to the US DOT
100.050.00.0
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
23.711.80.0
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
7793900
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
82.5%
10.2 min
646
647
Feb
82.1%
10.4 min
620
620
Mar
78.7%
15.9 min
773
779
Apr
79.9%
11.6 min
488
488
May
77.8%
11.6 min
472
474
Jun
75.9%
17.4 min
428
430
Jul
70.5%
23.7 min
448
448
Aug
82.2%
12.7 min
230
232
Sep
Fewer than 200 measured departures
—
176
176
Oct
88.0%
3.8 min
399
399
Nov
88.4%
3.8 min
561
562
Dec
79.0%
12.7 min
672
674
Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.
Recorded outcomes
On time80.2%4,754
Delayed >15 min19.5%1,159
Cancelled0.3%16
Missing departure time0.0%0
All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.
On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.
Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.