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 delay08:00–09:001.4min · 593 recorded · 579 measured
Gap to highest-delay hour15.6min08:00 ↔ 18:00
Recorded flights4,220CLL–DFW
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
17.08.50.0
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
6443220
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
85.6%
15.7 min
361
373
06:00
92.1%
5.7 min
280
284
07:00
No observations
—
—
—
08:00
90.0%
1.4 min
579
593
09:00
Fewer than 200 measured departures
—
128
133
10:00
86.0%
7.3 min
563
579
11:00
Fewer than 200 measured departures
—
1
1
12:00
Fewer than 200 measured departures
—
125
129
13:00
Fewer than 200 measured departures
—
48
48
14:00
Fewer than 200 measured departures
—
126
130
15:00
No observations
—
—
—
16:00
75.0%
15.1 min
536
555
17:00
Fewer than 200 measured departures
—
99
102
18:00
76.0%
17.0 min
608
644
19:00
Fewer than 200 measured departures
—
8
8
20:00
Fewer than 200 measured departures
—
28
29
21:00
Fewer than 200 measured departures
—
184
192
22:00
80.0%
12.1 min
405
420
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
14.97.40.0
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
6123060
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
82.9%
9.6 min
592
608
Tuesday
85.5%
5.2 min
565
593
Wednesday
83.1%
8.8 min
591
603
Thursday
84.7%
8.9 min
576
594
Friday
86.0%
10.2 min
587
604
Saturday
78.6%
14.9 min
575
606
Sunday
80.9%
11.1 min
593
612
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
14.57.30.0
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
4102050
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
86.8%
5.9 min
341
370
Feb
85.2%
11.2 min
325
328
Mar
79.4%
14.0 min
359
372
Apr
81.3%
11.5 min
348
360
May
80.9%
14.4 min
351
372
Jun
79.8%
14.5 min
341
360
Jul
82.9%
7.7 min
363
370
Aug
84.7%
5.7 min
229
238
Sep
88.6%
3.4 min
236
238
Oct
84.3%
8.2 min
402
406
Nov
84.6%
8.1 min
395
410
Dec
81.2%
10.2 min
389
396
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 time80.3%3,390
Delayed >15 min16.3%689
Cancelled3.3%141
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.