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 delay07:00–08:000.7min · 238 recorded · 237 measured
Gap to highest-delay hour23.5min07:00 ↔ 18:00
Recorded flights2,122DAL–LGB
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
24.112.10.0
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
3641820
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
—
73
73
07:00
94.5%
0.7 min
237
238
08:00
93.4%
3.3 min
362
364
09:00
Fewer than 200 measured departures
—
188
188
10:00
Fewer than 200 measured departures
—
92
94
11:00
Fewer than 200 measured departures
—
70
71
12:00
Fewer than 200 measured departures
—
61
64
13:00
Fewer than 200 measured departures
—
132
133
14:00
Fewer than 200 measured departures
—
96
96
15:00
Fewer than 200 measured departures
—
137
138
16:00
Fewer than 200 measured departures
—
154
155
17:00
Fewer than 200 measured departures
—
111
113
18:00
54.7%
24.1 min
318
322
19:00
Fewer than 200 measured departures
—
48
49
20:00
Fewer than 200 measured departures
—
23
24
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
14.57.20.0
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
3301650
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
75.3%
11.4 min
316
318
Tuesday
80.6%
11.3 min
314
316
Wednesday
80.3%
9.3 min
314
316
Thursday
81.7%
9.5 min
306
312
Friday
78.8%
10.9 min
311
314
Saturday
77.0%
14.5 min
213
216
Sunday
72.0%
13.6 min
328
330
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
12.86.40.0
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
2321160
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
177
186
Feb
Fewer than 200 measured departures
—
160
160
Mar
Fewer than 200 measured departures
—
183
184
Apr
Fewer than 200 measured departures
—
178
180
May
Fewer than 200 measured departures
—
181
182
Jun
Fewer than 200 measured departures
—
188
188
Jul
Fewer than 200 measured departures
—
192
194
Aug
Fewer than 200 measured departures
—
114
114
Sep
Fewer than 200 measured departures
—
112
112
Oct
Fewer than 200 measured departures
—
173
174
Nov
83.1%
6.2 min
213
216
Dec
78.4%
12.8 min
231
232
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%1,638
Delayed >15 min21.9%464
Cancelled0.9%20
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.