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 delay09:00–10:0021.8min · 723 recorded · 719 measured
Gap to highest-delay hour17.2min09:00 ↔ 15:00
Recorded flights2,668JAC–ORD
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
39.019.50.0
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
7233620
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
No observations
—
—
—
06:00
No observations
—
—
—
07:00
Fewer than 200 measured departures
—
158
164
08:00
Fewer than 200 measured departures
—
112
115
09:00
79.6%
21.8 min
719
723
10:00
Fewer than 200 measured departures
—
141
141
11:00
Fewer than 200 measured departures
—
28
29
12:00
75.8%
36.5 min
562
566
13:00
66.7%
32.3 min
504
508
14:00
No observations
—
—
—
15:00
65.9%
39.0 min
217
219
16:00
Fewer than 200 measured departures
—
198
203
17:00
No observations
—
—
—
18:00
No observations
—
—
—
19:00
No observations
—
—
—
20:00
No observations
—
—
—
21:00
No observations
—
—
—
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
36.818.40.0
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
4152080
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.4%
21.8 min
363
372
Tuesday
80.1%
25.1 min
337
340
Wednesday
73.9%
29.3 min
353
355
Thursday
75.2%
32.7 min
383
389
Friday
73.3%
24.9 min
397
399
Saturday
70.2%
27.9 min
412
415
Sunday
67.3%
36.8 min
394
398
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
45.022.50.0
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
4922460
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
70.5%
45.0 min
220
224
Feb
75.4%
20.1 min
232
232
Mar
77.9%
20.7 min
281
283
Apr
Fewer than 200 measured departures
—
36
36
May
Fewer than 200 measured departures
—
125
128
Jun
72.6%
21.5 min
459
464
Jul
67.5%
37.1 min
483
492
Aug
69.6%
33.7 min
237
242
Sep
79.2%
23.2 min
231
231
Oct
Fewer than 200 measured departures
—
194
194
Nov
Fewer than 200 measured departures
—
10
10
Dec
Fewer than 200 measured departures
—
131
132
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 time72.9%1,945
Delayed >15 min26.0%694
Cancelled1.1%29
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.