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 delay11:00–12:006.5min · 847 recorded · 844 measured
Gap to highest-delay hour13.4min11:00 ↔ 19:00
Recorded flights4,644DEN–EGE
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
19.99.90.0
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
1,3416710
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
85.3%
8.9 min
654
658
08:00
Fewer than 200 measured departures
—
8
9
09:00
Fewer than 200 measured departures
—
188
189
10:00
Fewer than 200 measured departures
—
8
9
11:00
86.4%
6.5 min
844
847
12:00
No observations
—
—
—
13:00
84.4%
7.5 min
1,330
1,341
14:00
Fewer than 200 measured departures
—
4
4
15:00
77.8%
15.5 min
794
803
16:00
Fewer than 200 measured departures
—
1
1
17:00
Fewer than 200 measured departures
—
78
78
18:00
Fewer than 200 measured departures
—
45
46
19:00
74.4%
19.9 min
636
643
20:00
Fewer than 200 measured departures
—
14
14
21:00
No observations
—
—
—
22:00
No observations
—
—
—
23:00
Fewer than 200 measured departures
—
2
2
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
16.78.40.0
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
6883440
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
85.0%
6.7 min
666
668
Tuesday
84.4%
8.9 min
634
640
Wednesday
85.7%
5.9 min
634
638
Thursday
81.8%
10.9 min
681
686
Friday
79.0%
16.7 min
649
662
Saturday
79.1%
15.2 min
655
662
Sunday
80.1%
10.3 min
687
688
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
20.010.0-0.1
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
6123060
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
81.1%
7.3 min
524
528
Feb
77.0%
15.6 min
491
502
Mar
82.2%
8.4 min
608
612
Apr
86.4%
7.6 min
361
362
May
80.6%
11.4 min
392
394
Jun
79.8%
11.9 min
357
360
Jul
75.8%
20.0 min
367
370
Aug
Fewer than 200 measured departures
—
184
186
Sep
Fewer than 200 measured departures
—
180
180
Oct
92.2%
-0.1 min
306
306
Nov
91.7%
4.8 min
348
354
Dec
79.1%
14.1 min
488
490
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 time81.4%3,782
Delayed >15 min17.7%824
Cancelled0.8%38
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.