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 delay06:00–07:00-1.4min · 471 recorded · 465 measured
Gap to highest-delay hour25.5min06:00 ↔ 20:00
Recorded flights3,003BDL–FLL
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
24.111.3-1.4
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
5092550
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
—
12
12
06:00
94.2%
-1.4 min
465
471
07:00
92.5%
0.9 min
429
437
08:00
Fewer than 200 measured departures
—
172
178
09:00
Fewer than 200 measured departures
—
50
51
10:00
Fewer than 200 measured departures
—
102
102
11:00
Fewer than 200 measured departures
—
174
178
12:00
Fewer than 200 measured departures
—
129
131
13:00
Fewer than 200 measured departures
—
177
178
14:00
Fewer than 200 measured departures
—
112
114
15:00
Fewer than 200 measured departures
—
84
85
16:00
Fewer than 200 measured departures
—
52
52
17:00
Fewer than 200 measured departures
—
160
162
18:00
Fewer than 200 measured departures
—
144
145
19:00
Fewer than 200 measured departures
—
187
191
20:00
63.0%
24.1 min
502
509
21:00
Fewer than 200 measured departures
—
7
7
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
17.58.80.0
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
4922460
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
72.8%
16.1 min
475
492
Tuesday
85.8%
9.3 min
337
339
Wednesday
80.6%
7.8 min
314
314
Thursday
78.0%
10.0 min
445
446
Friday
81.4%
11.7 min
483
485
Saturday
76.3%
10.6 min
464
471
Sunday
72.3%
17.5 min
440
456
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
28.714.30.0
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
75.0%
14.4 min
292
303
Feb
77.7%
13.6 min
296
312
Mar
74.0%
11.2 min
334
336
Apr
82.7%
5.7 min
278
278
May
82.3%
7.8 min
265
265
Jun
79.0%
12.4 min
248
249
Jul
66.3%
28.7 min
243
250
Aug
Fewer than 200 measured departures
—
111
111
Sep
Fewer than 200 measured departures
—
61
61
Oct
90.7%
5.5 min
205
205
Nov
85.6%
3.7 min
299
303
Dec
68.7%
21.1 min
326
330
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 time76.6%2,300
Delayed >15 min21.9%658
Cancelled1.5%45
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.