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 delay05:00–06:003.2min · 674 recorded · 667 measured
Gap to highest-delay hour16.7min05:00 ↔ 19:00
Recorded flights3,634DEN–SBA
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
19.89.90.0
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
7093550
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
93.3%
3.2 min
667
674
06:00
Fewer than 200 measured departures
—
119
119
07:00
No observations
—
—
—
08:00
Fewer than 200 measured departures
—
1
1
09:00
Fewer than 200 measured departures
—
38
38
10:00
Fewer than 200 measured departures
—
34
34
11:00
87.4%
5.9 min
708
709
12:00
Fewer than 200 measured departures
—
189
191
13:00
78.5%
12.1 min
671
675
14:00
Fewer than 200 measured departures
—
97
97
15:00
Fewer than 200 measured departures
—
157
160
16:00
Fewer than 200 measured departures
—
46
49
17:00
No observations
—
—
—
18:00
Fewer than 200 measured departures
—
92
95
19:00
66.1%
19.8 min
631
636
20:00
Fewer than 200 measured departures
—
121
123
21:00
Fewer than 200 measured departures
—
33
33
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
14.07.00.0
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
5522760
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
78.5%
10.1 min
545
546
Tuesday
82.6%
9.9 min
483
488
Wednesday
81.4%
9.5 min
489
496
Thursday
78.9%
13.6 min
536
540
Friday
78.1%
14.0 min
544
552
Saturday
79.1%
9.4 min
459
462
Sunday
77.9%
13.2 min
548
550
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
20.910.50.0
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
4002000
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
87.1%
4.1 min
294
300
Feb
86.3%
7.1 min
278
278
Mar
82.5%
10.3 min
302
302
Apr
80.6%
10.5 min
340
340
May
74.6%
14.5 min
358
362
Jun
73.9%
20.9 min
390
392
Jul
69.9%
19.4 min
385
400
Aug
70.1%
16.6 min
214
214
Sep
Fewer than 200 measured departures
—
198
198
Oct
86.2%
2.8 min
290
290
Nov
81.5%
9.3 min
275
276
Dec
82.5%
10.1 min
280
282
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 time78.8%2,863
Delayed >15 min20.4%741
Cancelled0.8%30
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.