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 delay09:00–10:009.6min · 1,173 recorded · 1,166 measured
Gap to highest-delay hour24.9min09:00 ↔ 20:00
Recorded flights4,638DEN–SGF
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
34.517.20.0
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
1,3116560
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
89.2%
12.5 min
232
233
06:00
Fewer than 200 measured departures
—
68
68
07:00
Fewer than 200 measured departures
—
52
52
08:00
Fewer than 200 measured departures
—
136
138
09:00
84.8%
9.6 min
1,166
1,173
10:00
No observations
—
—
—
11:00
Fewer than 200 measured departures
—
52
52
12:00
No observations
—
—
—
13:00
81.4%
12.7 min
1,302
1,311
14:00
No observations
—
—
—
15:00
No observations
—
—
—
16:00
Fewer than 200 measured departures
—
43
43
17:00
72.0%
21.7 min
1,209
1,224
18:00
Fewer than 200 measured departures
—
39
40
19:00
No observations
—
—
—
20:00
65.1%
34.5 min
289
292
21:00
Fewer than 200 measured departures
—
12
12
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
19.99.90.0
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
6813410
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
78.7%
14.7 min
672
672
Tuesday
80.4%
19.9 min
634
647
Wednesday
77.2%
14.1 min
646
649
Thursday
79.3%
14.6 min
665
667
Friday
79.6%
15.6 min
670
681
Saturday
79.1%
14.1 min
641
648
Sunday
80.2%
16.4 min
672
674
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
25.912.90.0
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
5282640
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
81.3%
11.7 min
368
372
Feb
81.4%
13.2 min
361
369
Mar
83.4%
9.5 min
421
428
Apr
76.4%
18.5 min
352
358
May
80.5%
17.6 min
477
479
Jun
71.9%
25.9 min
512
514
Jul
68.9%
23.9 min
527
528
Aug
79.0%
16.8 min
248
248
Sep
86.2%
6.9 min
239
239
Oct
83.4%
13.9 min
355
355
Nov
86.4%
7.6 min
367
375
Dec
80.7%
11.8 min
373
373
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 time78.6%3,644
Delayed >15 min20.6%956
Cancelled0.8%38
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.