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 delay05:00–06:00-1.2min · 305 recorded · 298 measured
Gap to highest-delay hour17.3min05:00 ↔ 19:00
Recorded flights5,492JNU–SEA
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
16.07.4-1.2
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
1,3596800
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
Fewer than 200 measured departures
—
65
68
02:00
Fewer than 200 measured departures
—
27
30
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
95.3%
-1.2 min
298
305
06:00
Fewer than 200 measured departures
—
41
43
07:00
90.6%
4.6 min
1,349
1,359
08:00
Fewer than 200 measured departures
—
120
123
09:00
Fewer than 200 measured departures
—
190
194
10:00
Fewer than 200 measured departures
—
28
28
11:00
71.5%
13.8 min
537
541
12:00
73.9%
10.5 min
218
222
13:00
84.5%
8.2 min
277
279
14:00
75.2%
9.5 min
456
461
15:00
Fewer than 200 measured departures
—
20
21
16:00
Fewer than 200 measured departures
—
175
175
17:00
Fewer than 200 measured departures
—
45
45
18:00
84.8%
1.4 min
712
726
19:00
60.4%
16.0 min
207
209
20:00
84.0%
3.6 min
244
248
21:00
Fewer than 200 measured departures
—
136
140
22:00
Fewer than 200 measured departures
—
176
183
23:00
Fewer than 200 measured departures
—
88
92
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
10.05.00.0
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
7903950
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
82.4%
6.3 min
774
787
Tuesday
84.0%
4.6 min
776
785
Wednesday
81.5%
5.6 min
772
783
Thursday
80.7%
9.3 min
771
779
Friday
78.7%
10.0 min
778
790
Saturday
82.0%
6.9 min
772
782
Sunday
82.4%
6.0 min
766
786
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
10.95.0-0.9
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
8664330
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
82.1%
10.9 min
352
367
Feb
84.0%
4.4 min
331
336
Mar
83.2%
7.0 min
369
372
Apr
89.4%
-0.0 min
359
360
May
80.8%
7.8 min
510
514
Jun
78.7%
8.0 min
773
779
Jul
77.5%
8.7 min
859
866
Aug
77.8%
9.5 min
406
409
Sep
84.4%
7.3 min
353
360
Oct
87.1%
6.1 min
395
407
Nov
88.1%
-0.9 min
354
359
Dec
76.4%
10.4 min
348
363
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 time80.4%4,417
Delayed >15 min18.1%992
Cancelled1.5%83
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.