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 delay14:00–15:000.3min · 214 recorded · 211 measured
Gap to highest-delay hour17.7min14:00 ↔ 23:00
Recorded flights2,486LAX–SBA
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
18.19.00.0
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
5702850
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
Fewer than 200 measured departures
—
16
16
06:00
94.2%
1.1 min
566
570
07:00
Fewer than 200 measured departures
—
70
72
08:00
Fewer than 200 measured departures
—
99
99
09:00
No observations
—
—
—
10:00
Fewer than 200 measured departures
—
97
97
11:00
Fewer than 200 measured departures
—
33
33
12:00
Fewer than 200 measured departures
—
141
144
13:00
Fewer than 200 measured departures
—
49
49
14:00
91.0%
0.3 min
211
214
15:00
Fewer than 200 measured departures
—
151
154
16:00
Fewer than 200 measured departures
—
182
183
17:00
Fewer than 200 measured departures
—
113
115
18:00
Fewer than 200 measured departures
—
91
91
19:00
No observations
—
—
—
20:00
No observations
—
—
—
21:00
No observations
—
—
—
22:00
89.7%
11.4 min
310
313
23:00
88.3%
18.1 min
333
336
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
10.35.10.0
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
3721860
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
92.7%
2.2 min
368
372
Tuesday
91.9%
6.4 min
346
350
Wednesday
91.1%
4.1 min
361
362
Thursday
90.4%
4.2 min
364
370
Friday
90.2%
4.9 min
366
370
Saturday
88.9%
10.3 min
305
308
Sunday
86.4%
8.9 min
352
354
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
25.011.0-3.0
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
2441220
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
90.5%
1.6 min
232
236
Feb
92.2%
2.3 min
206
208
Mar
90.1%
5.0 min
222
222
Apr
96.5%
0.4 min
230
230
May
95.8%
-3.0 min
236
236
Jun
87.9%
5.3 min
240
240
Jul
90.8%
4.2 min
240
244
Aug
Fewer than 200 measured departures
—
124
124
Sep
Fewer than 200 measured departures
—
118
118
Oct
Fewer than 200 measured departures
—
188
190
Nov
90.5%
12.3 min
220
226
Dec
79.1%
25.0 min
206
212
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 time89.4%2,222
Delayed >15 min9.7%240
Cancelled1.0%24
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.