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 delay08:00–09:002.8min · 516 recorded · 513 measured
Gap to highest-delay hour19.6min08:00 ↔ 17:00
Recorded flights5,538DEN–SAF
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
22.411.20.0
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
8864430
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
89.5%
7.7 min
711
717
08:00
89.3%
2.8 min
513
516
09:00
Fewer than 200 measured departures
—
1
1
10:00
88.6%
6.9 min
553
558
11:00
80.2%
11.7 min
676
678
12:00
No observations
—
—
—
13:00
80.1%
13.1 min
879
886
14:00
Fewer than 200 measured departures
—
18
19
15:00
81.5%
12.6 min
811
824
16:00
Fewer than 200 measured departures
—
53
54
17:00
67.9%
22.4 min
224
228
18:00
81.1%
9.7 min
396
402
19:00
76.5%
20.6 min
204
208
20:00
78.1%
19.7 min
384
391
21:00
Fewer than 200 measured departures
—
56
56
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
14.67.30.0
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
8024010
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
81.2%
11.9 min
802
802
Tuesday
84.5%
11.6 min
774
784
Wednesday
82.7%
11.0 min
775
782
Thursday
79.9%
12.7 min
784
796
Friday
81.0%
14.6 min
783
798
Saturday
87.7%
7.2 min
764
774
Sunday
80.8%
11.8 min
797
802
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
16.28.10.0
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
5582790
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
80.8%
14.3 min
504
508
Feb
83.4%
13.4 min
459
466
Mar
82.6%
10.8 min
540
544
Apr
85.2%
8.0 min
540
540
May
82.7%
12.4 min
554
558
Jun
79.1%
14.9 min
540
540
Jul
79.5%
16.2 min
545
548
Aug
78.7%
8.6 min
244
248
Sep
86.7%
6.7 min
240
240
Oct
85.4%
6.4 min
404
404
Nov
87.1%
8.5 min
419
450
Dec
80.8%
12.6 min
490
492
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 time81.6%4,520
Delayed >15 min17.3%959
Cancelled1.1%59
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.