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 delay10:00–11:003.0min · 336 recorded · 330 measured
Gap to highest-delay hour25.0min10:00 ↔ 17:00
Recorded flights6,292BDL–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
27.914.00.0
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
9394700
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
—
69
70
06:00
91.0%
9.0 min
487
500
07:00
91.0%
9.4 min
923
939
08:00
90.8%
7.7 min
262
271
09:00
85.9%
5.5 min
262
265
10:00
88.8%
3.0 min
330
336
11:00
77.2%
12.4 min
556
563
12:00
Fewer than 200 measured departures
—
141
145
13:00
75.8%
13.6 min
466
478
14:00
71.4%
23.1 min
598
603
15:00
Fewer than 200 measured departures
—
24
24
16:00
75.3%
12.1 min
332
338
17:00
64.3%
27.9 min
482
485
18:00
Fewer than 200 measured departures
—
76
82
19:00
67.2%
19.5 min
296
296
20:00
69.4%
24.9 min
288
293
21:00
65.7%
25.2 min
204
212
22:00
66.1%
22.8 min
380
392
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
20.010.00.0
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
9384690
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
77.6%
20.0 min
903
927
Tuesday
81.9%
12.3 min
821
836
Wednesday
85.1%
7.7 min
851
860
Thursday
78.6%
11.9 min
926
930
Friday
75.8%
15.1 min
903
917
Saturday
76.5%
16.9 min
859
884
Sunday
74.4%
19.1 min
913
938
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
28.814.40.0
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
6513260
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
84.6%
12.4 min
493
540
Feb
83.4%
9.4 min
487
514
Mar
74.3%
19.8 min
602
608
Apr
77.4%
13.1 min
584
584
May
77.3%
15.7 min
647
651
Jun
75.3%
16.9 min
592
604
Jul
67.8%
28.8 min
596
610
Aug
76.1%
19.1 min
272
272
Sep
84.7%
7.9 min
254
256
Oct
84.1%
6.7 min
560
560
Nov
84.2%
9.9 min
513
515
Dec
77.8%
13.6 min
576
578
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 time77.0%4,845
Delayed >15 min21.2%1,331
Cancelled1.8%116
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.