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 delay22:00–23:001.4min · 598 recorded · 593 measured
Gap to highest-delay hour20.0min22:00 ↔ 18:00
Recorded flights2,566BHM–MIA
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
21.410.70.0
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
6433220
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
Fewer than 200 measured departures
—
17
17
06:00
91.2%
2.5 min
638
643
07:00
Fewer than 200 measured departures
—
2
2
08:00
Fewer than 200 measured departures
—
75
77
09:00
Fewer than 200 measured departures
—
93
93
10:00
Fewer than 200 measured departures
—
118
120
11:00
Fewer than 200 measured departures
—
28
28
12:00
Fewer than 200 measured departures
—
1
1
13:00
Fewer than 200 measured departures
—
2
2
14:00
Fewer than 200 measured departures
—
5
5
15:00
Fewer than 200 measured departures
—
23
23
16:00
Fewer than 200 measured departures
—
149
152
17:00
74.5%
15.5 min
369
373
18:00
70.4%
21.4 min
321
326
19:00
Fewer than 200 measured departures
—
71
72
20:00
Fewer than 200 measured departures
—
1
1
21:00
Fewer than 200 measured departures
—
33
33
22:00
86.3%
1.4 min
593
598
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
13.66.80.0
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
3881940
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
84.1%
5.3 min
370
375
Tuesday
86.6%
4.7 min
344
350
Wednesday
88.7%
3.0 min
346
349
Thursday
87.5%
3.8 min
360
364
Friday
81.6%
11.7 min
365
368
Saturday
81.5%
8.9 min
383
388
Sunday
78.4%
13.6 min
371
372
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
12.76.0-0.7
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
3001500
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
87.1%
3.0 min
241
245
Feb
Fewer than 200 measured departures
—
190
190
Mar
Fewer than 200 measured departures
—
182
187
Apr
Fewer than 200 measured departures
—
176
180
May
82.8%
10.2 min
244
246
Jun
Fewer than 200 measured departures
—
193
196
Jul
77.3%
12.7 min
299
300
Aug
Fewer than 200 measured departures
—
182
182
Sep
Fewer than 200 measured departures
—
106
106
Oct
91.8%
-0.7 min
220
220
Nov
88.3%
3.3 min
264
270
Dec
80.2%
8.0 min
242
244
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%2,132
Delayed >15 min15.9%407
Cancelled1.1%27
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.