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 delay12:00–13:006.3min · 360 recorded · 355 measured
Gap to highest-delay hour3.7min12:00 ↔ 14:00
Recorded flights1,654CHO–LGA
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
10.15.00.0
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
3931970
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
Fewer than 200 measured departures
—
16
16
07:00
Fewer than 200 measured departures
—
61
61
08:00
Fewer than 200 measured departures
—
44
44
09:00
Fewer than 200 measured departures
—
20
20
10:00
Fewer than 200 measured departures
—
31
31
11:00
Fewer than 200 measured departures
—
12
12
12:00
83.4%
6.3 min
355
360
13:00
Fewer than 200 measured departures
—
153
154
14:00
83.2%
10.1 min
381
393
15:00
Fewer than 200 measured departures
—
182
197
16:00
Fewer than 200 measured departures
—
149
159
17:00
Fewer than 200 measured departures
—
81
84
18:00
Fewer than 200 measured departures
—
36
41
19:00
Fewer than 200 measured departures
—
1
1
20:00
Fewer than 200 measured departures
—
28
28
21:00
Fewer than 200 measured departures
—
51
53
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
18.69.30.0
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
2631320
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
81.7%
9.7 min
251
263
Tuesday
78.1%
12.6 min
251
258
Wednesday
86.7%
4.4 min
241
252
Thursday
76.7%
18.6 min
240
243
Friday
75.9%
14.5 min
249
258
Saturday
Fewer than 200 measured departures
—
123
124
Sunday
80.1%
9.3 min
246
256
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
14.37.20.0
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
2721360
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
—
104
107
Feb
Fewer than 200 measured departures
—
93
100
Mar
Fewer than 200 measured departures
—
105
116
Apr
Fewer than 200 measured departures
—
118
118
May
Fewer than 200 measured departures
—
112
116
Jun
Fewer than 200 measured departures
—
114
120
Jul
Fewer than 200 measured departures
—
102
114
Aug
Fewer than 200 measured departures
—
51
52
Sep
Fewer than 200 measured departures
—
52
52
Oct
84.0%
7.5 min
238
240
Nov
83.7%
5.7 min
270
272
Dec
75.6%
14.3 min
242
247
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 time77.7%1,285
Delayed >15 min19.1%316
Cancelled3.2%53
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.