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 delay06:00–07:00-2.8min · 421 recorded · 416 measured
Gap to highest-delay hour26.4min06:00 ↔ 14:00
Recorded flights2,252BOS–MCI
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
23.610.4-2.8
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
No observations
—
—
—
01:00
No observations
—
—
—
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
No observations
—
—
—
06:00
93.8%
-2.8 min
416
421
07:00
Fewer than 200 measured departures
—
45
46
08:00
Fewer than 200 measured departures
—
25
25
09:00
87.2%
7.2 min
335
341
10:00
85.0%
3.6 min
234
240
11:00
Fewer than 200 measured departures
—
65
65
12:00
Fewer than 200 measured departures
—
32
33
13:00
Fewer than 200 measured departures
—
13
15
14:00
67.8%
23.6 min
227
234
15:00
Fewer than 200 measured departures
—
81
84
16:00
74.6%
12.7 min
311
318
17:00
Fewer than 200 measured departures
—
13
14
18:00
Fewer than 200 measured departures
—
101
104
19:00
73.8%
21.2 min
305
312
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
14.67.30.0
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
3501750
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.9%
13.0 min
339
350
Tuesday
84.5%
9.4 min
328
332
Wednesday
79.2%
6.9 min
322
328
Thursday
78.0%
12.8 min
336
342
Friday
79.6%
12.5 min
334
336
Saturday
81.3%
9.9 min
214
224
Sunday
78.8%
14.6 min
330
340
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
15.67.80.0
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
2861430
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
Fewer than 200 measured departures
—
122
136
Feb
Fewer than 200 measured departures
—
106
112
Mar
87.8%
1.9 min
204
206
Apr
Fewer than 200 measured departures
—
198
198
May
81.3%
10.2 min
224
224
Jun
78.8%
13.4 min
264
264
Jul
72.3%
15.0 min
278
286
Aug
Fewer than 200 measured departures
—
110
112
Sep
Fewer than 200 measured departures
—
108
110
Oct
Fewer than 200 measured departures
—
196
204
Nov
80.5%
15.6 min
200
204
Dec
Fewer than 200 measured departures
—
193
196
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 time78.4%1,765
Delayed >15 min19.4%438
Cancelled2.2%49
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.