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 delay06:00–07:007.0min · 670 recorded · 667 measured
Gap to highest-delay hour13.0min06:00 ↔ 20:00
Recorded flights2,952CLE–MIA
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
20.110.00.0
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
6703350
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
—
28
28
06:00
91.3%
7.0 min
667
670
07:00
Fewer than 200 measured departures
—
68
68
08:00
Fewer than 200 measured departures
—
53
54
09:00
Fewer than 200 measured departures
—
30
31
10:00
Fewer than 200 measured departures
—
32
32
11:00
Fewer than 200 measured departures
—
76
77
12:00
Fewer than 200 measured departures
—
49
50
13:00
Fewer than 200 measured departures
—
72
72
14:00
82.9%
7.6 min
210
212
15:00
Fewer than 200 measured departures
—
185
188
16:00
Fewer than 200 measured departures
—
143
146
17:00
Fewer than 200 measured departures
—
133
134
18:00
Fewer than 200 measured departures
—
189
192
19:00
Fewer than 200 measured departures
—
186
190
20:00
69.4%
20.1 min
444
448
21:00
70.1%
19.6 min
354
356
22:00
Fewer than 200 measured departures
—
4
4
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
23.211.60.0
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
4742370
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
76.8%
11.9 min
449
461
Tuesday
85.2%
11.3 min
318
320
Wednesday
86.9%
5.4 min
321
321
Thursday
77.5%
16.7 min
449
450
Friday
79.8%
17.1 min
460
464
Saturday
77.4%
11.9 min
461
462
Sunday
70.1%
23.2 min
465
474
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
25.312.60.0
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
3781890
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
72.2%
25.3 min
345
349
Feb
84.1%
5.6 min
289
292
Mar
74.9%
22.0 min
371
378
Apr
78.5%
8.9 min
223
224
May
80.5%
7.7 min
231
231
Jun
78.5%
12.4 min
270
270
Jul
75.9%
15.0 min
278
280
Aug
Fewer than 200 measured departures
—
107
110
Sep
Fewer than 200 measured departures
—
91
93
Oct
Fewer than 200 measured departures
—
170
170
Nov
83.3%
8.0 min
252
254
Dec
75.3%
17.6 min
296
301
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 time77.7%2,293
Delayed >15 min21.3%630
Cancelled1.0%29
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.