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 delay12:00–13:005.0min · 854 recorded · 853 measured
Gap to highest-delay hour13.8min12:00 ↔ 19:00
Recorded flights5,238DEN–FAT
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
18.89.40.0
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
9274640
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
No observations
—
—
—
01:00
No observations
—
—
—
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
90.8%
6.2 min
663
666
06:00
No observations
—
—
—
07:00
Fewer than 200 measured departures
—
6
6
08:00
Fewer than 200 measured departures
—
94
94
09:00
89.6%
5.9 min
626
626
10:00
Fewer than 200 measured departures
—
85
85
11:00
85.9%
6.0 min
927
927
12:00
86.8%
5.0 min
853
854
13:00
71.9%
16.6 min
445
445
14:00
Fewer than 200 measured departures
—
121
121
15:00
83.6%
8.3 min
733
734
16:00
Fewer than 200 measured departures
—
19
19
17:00
Fewer than 200 measured departures
—
5
5
18:00
Fewer than 200 measured departures
—
1
1
19:00
71.3%
18.8 min
652
654
20:00
Fewer than 200 measured departures
—
1
1
21:00
No observations
—
—
—
22:00
No observations
—
—
—
23:00
No observations
—
—
—
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
10.95.40.0
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
7543770
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
82.9%
8.0 min
750
751
Tuesday
84.4%
8.5 min
751
751
Wednesday
84.0%
8.6 min
754
754
Thursday
82.5%
10.9 min
737
738
Friday
81.6%
10.3 min
750
752
Saturday
83.9%
8.7 min
739
740
Sunday
83.3%
7.2 min
750
752
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
15.77.80.0
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
5032520
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
86.4%
6.7 min
485
485
Feb
83.0%
8.2 min
441
441
Mar
84.6%
8.1 min
488
489
Apr
84.7%
7.3 min
478
478
May
78.1%
13.5 min
493
496
Jun
76.9%
12.8 min
480
480
Jul
75.4%
15.7 min
492
494
Aug
84.3%
10.1 min
248
248
Sep
91.6%
0.9 min
239
239
Oct
91.4%
0.3 min
409
409
Nov
88.0%
5.0 min
475
476
Dec
80.7%
12.8 min
503
503
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 time83.1%4,354
Delayed >15 min16.7%877
Cancelled0.1%7
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.