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 delay06:00–07:001.1min · 400 recorded · 397 measured
Gap to highest-delay hour29.1min06:00 ↔ 17:00
Recorded flights3,348BNA–SAT
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
30.215.10.0
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
5732870
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
—
36
36
06:00
96.7%
1.1 min
397
400
07:00
93.3%
1.8 min
569
573
08:00
92.5%
1.6 min
294
297
09:00
Fewer than 200 measured departures
—
2
2
10:00
Fewer than 200 measured departures
—
105
105
11:00
Fewer than 200 measured departures
—
93
94
12:00
Fewer than 200 measured departures
—
63
63
13:00
Fewer than 200 measured departures
—
153
154
14:00
Fewer than 200 measured departures
—
148
149
15:00
78.8%
11.6 min
311
312
16:00
54.2%
22.6 min
229
229
17:00
55.8%
30.2 min
251
252
18:00
Fewer than 200 measured departures
—
67
71
19:00
Fewer than 200 measured departures
—
24
24
20:00
Fewer than 200 measured departures
—
188
189
21:00
Fewer than 200 measured departures
—
193
194
22:00
57.4%
20.4 min
202
204
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
15.57.70.0
MonTueWedThuFriSatSun
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
5312660
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
76.1%
10.9 min
497
501
Tuesday
82.8%
7.0 min
464
466
Wednesday
82.4%
7.3 min
461
462
Thursday
71.2%
15.5 min
528
531
Friday
73.5%
13.8 min
509
513
Saturday
81.3%
9.2 min
358
362
Sunday
74.6%
14.6 min
508
513
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
20.810.40.0
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
3611810
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
80.6%
9.7 min
253
266
Feb
83.4%
4.8 min
253
253
Mar
83.2%
6.2 min
321
325
Apr
81.2%
8.7 min
335
337
May
69.8%
16.8 min
361
361
Jun
64.9%
18.5 min
348
350
Jul
65.6%
20.8 min
340
340
Aug
Fewer than 200 measured departures
—
157
158
Sep
Fewer than 200 measured departures
—
146
146
Oct
81.9%
9.0 min
260
260
Nov
86.1%
6.3 min
273
274
Dec
75.9%
10.8 min
278
278
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 time76.5%2,562
Delayed >15 min22.8%763
Cancelled0.7%23
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.