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 delay06:00–07:000.6min · 378 recorded · 368 measured
Gap to highest-delay hour20.3min06:00 ↔ 16:00
Recorded flights2,897ATL–MOB
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
20.910.50.0
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
3781890
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
—
34
34
06:00
94.6%
0.6 min
368
378
07:00
No observations
—
—
—
08:00
Fewer than 200 measured departures
—
114
116
09:00
Fewer than 200 measured departures
—
116
118
10:00
Fewer than 200 measured departures
—
33
33
11:00
84.4%
6.4 min
205
211
12:00
83.0%
8.2 min
265
270
13:00
Fewer than 200 measured departures
—
116
116
14:00
Fewer than 200 measured departures
—
111
112
15:00
Fewer than 200 measured departures
—
193
196
16:00
71.0%
20.9 min
290
291
17:00
71.2%
20.5 min
260
263
18:00
76.8%
11.5 min
224
229
19:00
Fewer than 200 measured departures
—
125
129
20:00
Fewer than 200 measured departures
—
29
29
21:00
Fewer than 200 measured departures
—
1
1
22:00
Fewer than 200 measured departures
—
179
185
23:00
Fewer than 200 measured departures
—
182
186
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
17.48.70.0
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
4462230
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
78.4%
15.2 min
440
446
Tuesday
83.9%
11.2 min
428
430
Wednesday
85.5%
7.6 min
400
401
Thursday
85.0%
7.5 min
407
412
Friday
77.1%
17.4 min
423
432
Saturday
84.4%
10.3 min
339
357
Sunday
76.0%
10.4 min
408
419
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
24.011.0-1.9
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
3901950
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
180
191
Feb
79.5%
21.8 min
224
228
Mar
82.2%
12.1 min
202
202
Apr
Fewer than 200 measured departures
—
175
180
May
Fewer than 200 measured departures
—
102
109
Jun
71.5%
24.0 min
260
274
Jul
71.3%
18.5 min
387
390
Aug
Fewer than 200 measured departures
—
190
190
Sep
Fewer than 200 measured departures
—
156
156
Oct
92.4%
-1.9 min
340
340
Nov
91.4%
-0.2 min
313
317
Dec
82.6%
15.5 min
316
320
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 time79.9%2,314
Delayed >15 min18.3%531
Cancelled1.8%52
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.