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 delay11:00–12:008.4min · 505 recorded · 500 measured
Gap to highest-delay hour21.6min11:00 ↔ 20:00
Recorded flights5,026CAK–CLT
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
30.015.00.0
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
7253630
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
—
16
17
06:00
86.2%
18.1 min
514
521
07:00
Fewer than 200 measured departures
—
128
136
08:00
85.4%
16.7 min
535
542
09:00
84.0%
9.2 min
470
478
10:00
Fewer than 200 measured departures
—
52
56
11:00
82.0%
8.4 min
500
505
12:00
Fewer than 200 measured departures
—
100
104
13:00
Fewer than 200 measured departures
—
166
168
14:00
Fewer than 200 measured departures
—
90
93
15:00
72.1%
19.7 min
276
278
16:00
71.3%
21.2 min
324
328
17:00
72.6%
22.5 min
252
258
18:00
69.0%
27.2 min
719
725
19:00
72.8%
20.1 min
268
272
20:00
62.9%
30.0 min
385
395
21:00
Fewer than 200 measured departures
—
134
135
22:00
Fewer than 200 measured departures
—
14
15
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
22.911.40.0
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
7663830
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
76.3%
18.0 min
752
759
Tuesday
81.9%
10.8 min
536
538
Wednesday
81.7%
14.7 min
728
738
Thursday
77.1%
19.8 min
739
755
Friday
75.1%
22.1 min
748
762
Saturday
77.6%
16.0 min
692
708
Sunday
73.4%
22.9 min
748
766
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
30.815.40.0
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
4902450
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
81.3%
17.0 min
449
487
Feb
72.6%
19.5 min
401
420
Mar
75.5%
22.5 min
473
476
Apr
79.7%
14.0 min
454
456
May
75.5%
16.9 min
474
478
Jun
71.8%
26.2 min
479
490
Jul
74.0%
22.7 min
481
482
Aug
78.6%
16.4 min
234
234
Sep
85.7%
5.9 min
230
230
Oct
87.4%
7.7 min
380
380
Nov
85.4%
6.3 min
411
414
Dec
69.0%
30.8 min
477
479
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 time76.1%3,826
Delayed >15 min22.2%1,117
Cancelled1.7%83
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.