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 delay05:00–06:00-3.1min · 359 recorded · 356 measured
Gap to highest-delay hour24.4min05:00 ↔ 21:00
Recorded flights3,389BNA–MKE
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
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
21.49.2-3.1
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
3841920
00:0003:0006:0009:0012:0015:0018:0021:00
Hover, tap or focus a point to see its value, sample and source.
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
97.8%
-3.1 min
356
359
06:00
Fewer than 200 measured departures
—
79
80
07:00
Fewer than 200 measured departures
—
175
176
08:00
Fewer than 200 measured departures
—
142
143
09:00
90.8%
3.0 min
303
309
10:00
86.1%
5.2 min
317
323
11:00
Fewer than 200 measured departures
—
181
184
12:00
Fewer than 200 measured departures
—
93
93
13:00
Fewer than 200 measured departures
—
66
67
14:00
Fewer than 200 measured departures
—
77
78
15:00
66.5%
19.1 min
209
209
16:00
58.9%
20.0 min
382
384
17:00
Fewer than 200 measured departures
—
143
145
18:00
Fewer than 200 measured departures
—
165
167
19:00
Fewer than 200 measured departures
—
123
123
20:00
Fewer than 200 measured departures
—
192
194
21:00
59.9%
21.4 min
202
203
22:00
Fewer than 200 measured departures
—
150
152
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
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
14.27.10.0
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
5312660
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
75.2%
11.6 min
517
526
Tuesday
83.2%
7.8 min
469
475
Wednesday
83.6%
6.6 min
468
470
Thursday
74.6%
12.5 min
503
503
Friday
77.1%
11.0 min
525
531
Saturday
83.2%
7.3 min
374
379
Sunday
72.1%
14.2 min
499
505
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
14.37.10.0
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
3661830
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
87.3%
5.8 min
252
265
Feb
81.1%
8.7 min
248
250
Mar
78.3%
9.1 min
318
326
Apr
80.0%
9.5 min
340
340
May
75.8%
12.0 min
363
366
Jun
68.8%
14.3 min
359
362
Jul
72.3%
14.1 min
357
357
Aug
Fewer than 200 measured departures
—
156
158
Sep
Fewer than 200 measured departures
—
154
154
Oct
74.6%
14.3 min
264
264
Nov
84.2%
6.6 min
266
269
Dec
80.6%
8.3 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 time77.3%2,621
Delayed >15 min21.7%734
Cancelled1.0%34
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.