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 delay12:00–13:0013.9min · 225 recorded · 225 measured
Gap to highest-delay hour9.1min12:00 ↔ 15:00
Recorded flights2,285MIA–STX
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
22.911.50.0
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
4112060
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
No observations
—
—
—
06:00
No observations
—
—
—
07:00
No observations
—
—
—
08:00
Fewer than 200 measured departures
—
54
56
09:00
Fewer than 200 measured departures
—
130
131
10:00
Fewer than 200 measured departures
—
197
197
11:00
Fewer than 200 measured departures
—
197
197
12:00
77.3%
13.9 min
225
225
13:00
71.8%
18.2 min
411
411
14:00
Fewer than 200 measured departures
—
172
175
15:00
75.1%
22.9 min
233
233
16:00
Fewer than 200 measured departures
—
199
199
17:00
74.1%
16.6 min
247
248
18:00
80.2%
22.4 min
212
213
19:00
No observations
—
—
—
20:00
No observations
—
—
—
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
22.711.30.0
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
3371690
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.0%
22.7 min
335
336
Tuesday
77.2%
13.3 min
307
308
Wednesday
80.4%
16.8 min
306
306
Thursday
81.2%
21.0 min
330
330
Friday
78.3%
13.9 min
337
337
Saturday
73.9%
22.6 min
330
334
Sunday
74.1%
13.6 min
332
334
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
30.115.10.0
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
2491250
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
192
198
Feb
Fewer than 200 measured departures
—
167
169
Mar
Fewer than 200 measured departures
—
186
186
Apr
81.6%
7.4 min
234
234
May
81.5%
7.8 min
249
249
Jun
75.4%
20.3 min
240
240
Jul
73.0%
30.1 min
248
248
Aug
Fewer than 200 measured departures
—
110
110
Sep
Fewer than 200 measured departures
—
62
62
Oct
Fewer than 200 measured departures
—
138
138
Nov
82.1%
3.2 min
218
218
Dec
75.5%
25.8 min
233
233
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 time77.2%1,763
Delayed >15 min22.5%514
Cancelled0.4%8
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.