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 delay09:00–10:004.3min · 490 recorded · 477 measured
Gap to highest-delay hour26.4min09:00 ↔ 20:00
Recorded flights5,089CLT–DAB
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
30.715.30.0
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
8694350
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
—
21
21
06:00
92.9%
4.9 min
534
549
07:00
Fewer than 200 measured departures
—
53
53
08:00
Fewer than 200 measured departures
—
59
59
09:00
87.8%
4.3 min
477
490
10:00
Fewer than 200 measured departures
—
134
140
11:00
81.5%
9.3 min
850
869
12:00
79.6%
7.2 min
367
377
13:00
76.8%
14.1 min
561
572
14:00
Fewer than 200 measured departures
—
126
131
15:00
78.2%
13.4 min
321
325
16:00
Fewer than 200 measured departures
—
133
139
17:00
70.1%
25.1 min
444
457
18:00
Fewer than 200 measured departures
—
72
72
19:00
Fewer than 200 measured departures
—
152
160
20:00
64.1%
30.7 min
223
233
21:00
72.7%
19.8 min
282
290
22:00
Fewer than 200 measured departures
—
148
152
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
18.79.40.0
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
7633820
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.8%
13.8 min
713
737
Tuesday
81.2%
10.7 min
666
676
Wednesday
86.3%
4.5 min
692
708
Thursday
79.6%
11.9 min
729
737
Friday
80.6%
9.6 min
717
735
Saturday
77.4%
18.7 min
707
733
Sunday
74.8%
17.7 min
733
763
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
21.810.90.0
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
4942470
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
84.2%
12.0 min
425
462
Feb
78.4%
14.7 min
408
431
Mar
83.8%
8.4 min
462
482
Apr
81.8%
9.5 min
467
472
May
71.4%
21.4 min
489
490
Jun
76.0%
21.8 min
475
494
Jul
71.7%
19.2 min
473
486
Aug
79.6%
12.3 min
240
244
Sep
88.5%
0.5 min
253
254
Oct
89.5%
1.2 min
408
408
Nov
84.7%
3.9 min
424
430
Dec
71.8%
16.8 min
433
436
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 time77.5%3,946
Delayed >15 min19.9%1,011
Cancelled2.6%132
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.