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 delay12:00–13:004.7min · 227 recorded · 224 measured
Gap to highest-delay hour16.0min12:00 ↔ 16:00
Recorded flights4,035CLT–SJU
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
20.710.30.0
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
6733370
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
—
1
1
06:00
Fewer than 200 measured departures
—
13
13
07:00
87.3%
7.1 min
590
593
08:00
89.6%
5.4 min
499
508
09:00
Fewer than 200 measured departures
—
126
127
10:00
Fewer than 200 measured departures
—
60
64
11:00
83.0%
6.9 min
672
673
12:00
84.8%
4.7 min
224
227
13:00
Fewer than 200 measured departures
—
157
159
14:00
Fewer than 200 measured departures
—
166
169
15:00
71.4%
13.5 min
413
421
16:00
70.7%
20.7 min
535
539
17:00
76.4%
14.8 min
208
211
18:00
Fewer than 200 measured departures
—
73
74
19:00
Fewer than 200 measured departures
—
121
121
20:00
Fewer than 200 measured departures
—
107
111
21:00
Fewer than 200 measured departures
—
22
23
22:00
Fewer than 200 measured departures
—
1
1
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
21.810.90.0
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
6293150
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.2%
13.5 min
587
593
Tuesday
80.7%
9.4 min
517
518
Wednesday
84.3%
6.9 min
515
516
Thursday
76.5%
13.9 min
605
610
Friday
82.3%
6.8 min
587
592
Saturday
75.9%
14.9 min
560
577
Sunday
72.8%
21.8 min
617
629
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
24.712.30.0
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
5202600
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
77.0%
21.0 min
431
462
Feb
84.1%
7.3 min
420
424
Mar
83.6%
10.6 min
519
520
Apr
75.4%
12.3 min
402
402
May
81.8%
10.0 min
385
386
Jun
72.7%
19.0 min
297
304
Jul
63.6%
24.7 min
308
308
Aug
Fewer than 200 measured departures
—
132
134
Sep
Fewer than 200 measured departures
—
63
63
Oct
Fewer than 200 measured departures
—
199
199
Nov
84.4%
7.0 min
340
341
Dec
81.5%
8.5 min
492
492
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 time77.4%3,124
Delayed >15 min21.4%864
Cancelled1.2%47
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.