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 delay09:00–10:000.4min · 516 recorded · 511 measured
Gap to highest-delay hour6.6min09:00 ↔ 12:00
Recorded flights1,905ATL–GEG
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
7.03.50.0
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
5542770
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
No observations
—
—
—
09:00
91.2%
0.4 min
511
516
10:00
Fewer than 200 measured departures
—
140
142
11:00
No observations
—
—
—
12:00
84.6%
7.0 min
550
554
13:00
Fewer than 200 measured departures
—
102
104
14:00
No observations
—
—
—
15:00
No observations
—
—
—
16:00
No observations
—
—
—
17:00
No observations
—
—
—
18:00
No observations
—
—
—
19:00
Fewer than 200 measured departures
—
167
167
20:00
Fewer than 200 measured departures
—
126
128
21:00
No observations
—
—
—
22:00
Fewer than 200 measured departures
—
184
184
23:00
Fewer than 200 measured departures
—
107
110
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
8.14.10.0
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
3181590
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.1%
8.1 min
263
263
Tuesday
86.1%
4.4 min
244
244
Wednesday
85.2%
4.3 min
250
250
Thursday
83.2%
4.6 min
310
312
Friday
86.0%
5.6 min
307
314
Saturday
Fewer than 200 measured departures
—
198
204
Sunday
81.0%
6.5 min
315
318
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
8.64.30.0
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
2281140
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
—
132
138
Feb
Fewer than 200 measured departures
—
112
112
Mar
Fewer than 200 measured departures
—
184
186
Apr
Fewer than 200 measured departures
—
196
196
May
84.0%
4.2 min
200
200
Jun
Fewer than 200 measured departures
—
199
201
Jul
80.5%
8.6 min
226
228
Aug
Fewer than 200 measured departures
—
86
90
Sep
Fewer than 200 measured departures
—
78
78
Oct
Fewer than 200 measured departures
—
146
146
Nov
Fewer than 200 measured departures
—
160
160
Dec
Fewer than 200 measured departures
—
168
170
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 time83.0%1,582
Delayed >15 min16.0%305
Cancelled0.9%18
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.