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 → Apr 20, 2026
Lowest average delay06:00–07:0019.5min · 303 recorded · 292 measured
Gap to highest-delay hour21.9min06:00 ↔ 21:00
Recorded flights1,697ATL–CRW
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
41.420.70.0
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
3031520
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
90.4%
19.5 min
292
303
07:00
No observations
—
—
—
08:00
Fewer than 200 measured departures
—
32
33
09:00
Fewer than 200 measured departures
—
10
13
10:00
Fewer than 200 measured departures
—
43
44
11:00
Fewer than 200 measured departures
—
66
70
12:00
Fewer than 200 measured departures
—
43
44
13:00
Fewer than 200 measured departures
—
103
105
14:00
Fewer than 200 measured departures
—
44
44
15:00
Fewer than 200 measured departures
—
192
200
16:00
Fewer than 200 measured departures
—
167
169
17:00
Fewer than 200 measured departures
—
195
202
18:00
Fewer than 200 measured departures
—
105
106
19:00
Fewer than 200 measured departures
—
76
76
20:00
Fewer than 200 measured departures
—
43
46
21:00
71.8%
41.4 min
234
242
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
31.916.00.0
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
2551280
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
69.4%
31.9 min
248
255
Tuesday
70.2%
28.5 min
238
244
Wednesday
73.2%
30.3 min
239
246
Thursday
74.5%
30.7 min
239
245
Friday
80.3%
20.1 min
239
246
Saturday
84.7%
9.1 min
215
224
Sunday
80.2%
24.2 min
227
237
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
45.222.60.0
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
3021510
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
62.0%
45.2 min
263
302
Feb
Fewer than 200 measured departures
—
156
158
Mar
Fewer than 200 measured departures
—
130
134
Apr
Fewer than 200 measured departures
—
128
130
May
Fewer than 200 measured departures
—
162
164
Jun
Fewer than 200 measured departures
—
39
39
Jul
Fewer than 200 measured departures
—
16
16
Aug
Fewer than 200 measured departures
—
52
52
Sep
Fewer than 200 measured departures
—
79
79
Oct
87.1%
8.9 min
209
209
Nov
84.7%
10.2 min
215
218
Dec
Fewer than 200 measured departures
—
196
196
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 time73.5%1,248
Delayed >15 min23.4%397
Cancelled3.1%52
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.