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 delay08:00–09:007.5min · 271 recorded · 269 measured
Gap to highest-delay hour16.7min08:00 ↔ 16:00
Recorded flights2,287JAC–LAX
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
24.212.10.0
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
4692350
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
Fewer than 200 measured departures
—
1
1
08:00
87.4%
7.5 min
269
271
09:00
84.5%
8.1 min
465
469
10:00
86.8%
8.1 min
227
230
11:00
Fewer than 200 measured departures
—
190
191
12:00
76.2%
15.0 min
365
368
13:00
79.1%
9.6 min
325
330
14:00
Fewer than 200 measured departures
—
69
72
15:00
Fewer than 200 measured departures
—
125
128
16:00
68.2%
24.2 min
201
202
17:00
Fewer than 200 measured departures
—
25
25
18:00
No observations
—
—
—
19:00
No observations
—
—
—
20:00
No observations
—
—
—
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
20.910.40.0
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
3861930
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.6%
9.3 min
313
318
Tuesday
86.1%
5.3 min
244
248
Wednesday
84.8%
7.3 min
257
264
Thursday
83.6%
5.6 min
329
331
Friday
79.1%
20.9 min
368
370
Saturday
80.2%
15.2 min
383
386
Sunday
76.6%
16.7 min
368
370
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
24.612.30.0
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
3401700
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
84.0%
8.6 min
338
340
Feb
83.7%
6.9 min
300
308
Mar
81.7%
7.0 min
334
336
Apr
Fewer than 200 measured departures
—
24
24
May
Fewer than 200 measured departures
—
74
75
Jun
83.0%
12.4 min
283
288
Jul
75.2%
24.6 min
306
310
Aug
Fewer than 200 measured departures
—
174
174
Sep
Fewer than 200 measured departures
—
156
156
Oct
Fewer than 200 measured departures
—
112
112
Nov
Fewer than 200 measured departures
—
10
10
Dec
Fewer than 200 measured departures
—
151
154
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 time80.1%1,832
Delayed >15 min18.8%430
Cancelled1.1%25
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.