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 delay21:00–22:004.7min · 494 recorded · 491 measured
Gap to highest-delay hour13.9min21:00 ↔ 12:00
Recorded flights5,577CLT–SAN
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
18.59.30.0
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
7823910
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
No observations
—
—
—
06:00
89.5%
5.4 min
372
375
07:00
89.7%
8.2 min
756
760
08:00
87.5%
6.1 min
472
475
09:00
Fewer than 200 measured departures
—
73
77
10:00
Fewer than 200 measured departures
—
24
24
11:00
78.6%
13.1 min
780
782
12:00
79.4%
18.5 min
345
352
13:00
69.7%
18.4 min
538
540
14:00
Fewer than 200 measured departures
—
36
39
15:00
Fewer than 200 measured departures
—
42
42
16:00
72.3%
17.0 min
519
521
17:00
Fewer than 200 measured departures
—
80
80
18:00
70.4%
17.4 min
449
457
19:00
Fewer than 200 measured departures
—
71
71
20:00
Fewer than 200 measured departures
—
44
44
21:00
84.3%
4.7 min
491
494
22:00
87.9%
15.2 min
439
444
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
17.78.90.0
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
8504250
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.4%
11.1 min
807
816
Tuesday
84.0%
8.8 min
744
746
Wednesday
83.4%
11.2 min
752
755
Thursday
80.5%
11.5 min
834
834
Friday
79.3%
17.7 min
815
822
Saturday
78.9%
12.9 min
743
754
Sunday
78.4%
14.7 min
836
850
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
21.910.90.0
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
5782890
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
82.3%
9.5 min
451
478
Feb
82.4%
9.9 min
471
474
Mar
82.4%
14.3 min
573
578
Apr
82.6%
8.5 min
539
539
May
81.0%
8.8 min
548
548
Jun
77.3%
15.4 min
538
540
Jul
71.0%
19.4 min
544
546
Aug
74.8%
21.9 min
222
222
Sep
84.4%
20.1 min
237
238
Oct
80.5%
10.5 min
452
452
Nov
87.4%
6.7 min
452
456
Dec
80.2%
14.0 min
504
506
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 time79.8%4,451
Delayed >15 min19.4%1,080
Cancelled0.8%46
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.