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 delay05:00–06:00-0.2min · 225 recorded · 224 measured
Gap to highest-delay hour23.8min05:00 ↔ 18:00
Recorded flights4,039LAS–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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
23.611.7-0.2
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
4212110
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
Fewer than 200 measured departures
—
18
18
01:00
No observations
—
—
—
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
97.8%
-0.2 min
224
225
06:00
95.0%
0.4 min
419
421
07:00
Fewer than 200 measured departures
—
176
176
08:00
90.7%
3.0 min
332
333
09:00
79.6%
9.9 min
245
246
10:00
Fewer than 200 measured departures
—
125
126
11:00
Fewer than 200 measured departures
—
164
164
12:00
75.5%
13.0 min
261
264
13:00
74.7%
13.8 min
261
261
14:00
77.3%
10.1 min
247
248
15:00
Fewer than 200 measured departures
—
115
117
16:00
67.3%
17.4 min
226
227
17:00
60.2%
19.3 min
304
306
18:00
58.2%
23.6 min
380
380
19:00
64.9%
21.8 min
393
399
20:00
Fewer than 200 measured departures
—
56
57
21:00
Fewer than 200 measured departures
—
44
46
22:00
No observations
—
—
—
23:00
Fewer than 200 measured departures
—
25
25
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
16.58.30.0
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
6563280
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
70.7%
16.5 min
620
628
Tuesday
78.5%
10.4 min
540
543
Wednesday
83.3%
6.5 min
534
534
Thursday
71.1%
13.9 min
608
613
Friday
76.8%
13.0 min
629
629
Saturday
84.8%
7.4 min
435
436
Sunday
77.0%
11.2 min
649
656
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
21.410.70.0
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
4192100
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
77.4%
11.0 min
292
293
Feb
79.0%
9.6 min
300
300
Mar
78.4%
11.4 min
407
416
Apr
81.8%
6.9 min
417
419
May
76.3%
11.6 min
409
412
Jun
67.6%
21.4 min
376
376
Jul
69.7%
16.8 min
380
382
Aug
80.1%
9.2 min
206
206
Sep
Fewer than 200 measured departures
—
185
187
Oct
77.9%
9.7 min
398
398
Nov
86.2%
6.3 min
341
346
Dec
75.7%
12.6 min
304
304
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%3,091
Delayed >15 min22.9%924
Cancelled0.6%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.