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 delay06:00–07:005.2min · 230 recorded · 229 measured
Gap to highest-delay hour28.7min06:00 ↔ 19:00
Recorded flights2,596CLT–MDW
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
33.917.00.0
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
4502250
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
—
87
91
06:00
93.9%
5.2 min
229
230
07:00
84.6%
6.5 min
234
236
08:00
Fewer than 200 measured departures
—
150
152
09:00
Fewer than 200 measured departures
—
140
143
10:00
Fewer than 200 measured departures
—
47
47
11:00
Fewer than 200 measured departures
—
61
61
12:00
Fewer than 200 measured departures
—
133
135
13:00
76.9%
11.4 min
221
223
14:00
Fewer than 200 measured departures
—
28
28
15:00
Fewer than 200 measured departures
—
25
26
16:00
Fewer than 200 measured departures
—
75
76
17:00
Fewer than 200 measured departures
—
97
98
18:00
56.6%
25.2 min
445
450
19:00
48.0%
33.9 min
304
308
20:00
52.5%
27.9 min
263
266
21:00
Fewer than 200 measured departures
—
26
26
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
20.410.20.0
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
4042020
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
72.2%
17.1 min
399
404
Tuesday
73.3%
12.6 min
375
376
Wednesday
76.5%
13.5 min
370
372
Thursday
66.5%
19.0 min
394
400
Friday
69.8%
17.9 min
401
404
Saturday
67.7%
19.5 min
248
254
Sunday
62.7%
20.4 min
378
386
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
23.912.00.0
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
3361680
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
148
152
Feb
Fewer than 200 measured departures
—
164
166
Mar
69.5%
17.0 min
226
230
Apr
77.1%
13.5 min
231
232
May
67.9%
19.4 min
237
238
Jun
61.9%
23.9 min
312
314
Jul
60.5%
23.3 min
329
336
Aug
Fewer than 200 measured departures
—
117
120
Sep
Fewer than 200 measured departures
—
112
112
Oct
73.7%
11.2 min
224
224
Nov
75.5%
12.7 min
224
230
Dec
65.6%
19.2 min
241
242
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 time69.1%1,793
Delayed >15 min29.7%772
Cancelled1.2%31
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.