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 delay05:00–06:00-2.7min · 239 recorded · 233 measured
Gap to highest-delay hour41.6min05:00 ↔ 20:00
Recorded flights6,571DFW–JAX
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
38.918.1-2.7
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
8824410
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
94.9%
-2.7 min
233
239
06:00
91.0%
1.6 min
310
318
07:00
88.9%
5.8 min
852
882
08:00
85.7%
4.2 min
574
585
09:00
Fewer than 200 measured departures
—
148
153
10:00
Fewer than 200 measured departures
—
85
89
11:00
82.4%
17.3 min
575
587
12:00
71.1%
19.7 min
619
633
13:00
Fewer than 200 measured departures
—
53
54
14:00
Fewer than 200 measured departures
—
191
195
15:00
60.7%
26.5 min
542
555
16:00
65.4%
31.6 min
428
440
17:00
59.8%
26.9 min
555
572
18:00
Fewer than 200 measured departures
—
132
137
19:00
55.9%
33.7 min
660
695
20:00
51.7%
38.9 min
414
432
21:00
Fewer than 200 measured departures
—
5
5
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
23.711.90.0
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
1,0065030
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
69.7%
23.7 min
974
1,002
Tuesday
77.0%
13.6 min
834
867
Wednesday
73.9%
16.9 min
848
869
Thursday
71.9%
19.4 min
941
964
Friday
73.5%
18.3 min
976
1,006
Saturday
69.7%
23.7 min
859
887
Sunday
69.3%
23.4 min
944
976
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
31.515.70.0
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
7463730
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
78.8%
15.6 min
486
524
Feb
81.4%
12.7 min
478
482
Mar
70.5%
21.5 min
616
632
Apr
73.7%
15.1 min
563
580
May
70.7%
17.1 min
638
667
Jun
64.4%
25.9 min
700
728
Jul
62.9%
31.5 min
722
746
Aug
61.1%
30.9 min
288
296
Sep
79.8%
20.6 min
248
254
Oct
78.1%
9.6 min
492
496
Nov
77.4%
16.5 min
567
578
Dec
72.8%
20.8 min
578
588
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 time69.9%4,595
Delayed >15 min27.1%1,781
Cancelled3.0%195
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.