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 delay05:00–06:001.2min · 469 recorded · 458 measured
Gap to highest-delay hour25.8min05:00 ↔ 18:00
Recorded flights5,655IND–PHL
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
27.113.50.0
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
7943970
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
93.7%
1.2 min
458
469
06:00
Fewer than 200 measured departures
—
136
137
07:00
90.5%
5.7 min
401
411
08:00
86.9%
5.5 min
489
500
09:00
Fewer than 200 measured departures
—
47
49
10:00
83.7%
12.7 min
453
468
11:00
82.6%
7.7 min
396
400
12:00
Fewer than 200 measured departures
—
42
45
13:00
80.1%
12.7 min
677
688
14:00
Fewer than 200 measured departures
—
177
183
15:00
74.2%
18.6 min
457
473
16:00
68.9%
25.2 min
454
468
17:00
Fewer than 200 measured departures
—
2
2
18:00
71.0%
27.1 min
751
794
19:00
Fewer than 200 measured departures
—
193
201
20:00
Fewer than 200 measured departures
—
1
1
21:00
73.1%
19.2 min
282
298
22:00
Fewer than 200 measured departures
—
64
68
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
18.59.30.0
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
8564280
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.7%
18.5 min
819
856
Tuesday
83.6%
13.9 min
769
794
Wednesday
85.6%
7.8 min
791
804
Thursday
77.5%
16.9 min
818
840
Friday
80.1%
9.9 min
834
848
Saturday
78.7%
13.2 min
672
692
Sunday
77.6%
17.2 min
777
821
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
33.316.60.0
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
6783390
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
82.8%
9.4 min
390
418
Feb
84.6%
5.6 min
356
376
Mar
86.7%
6.6 min
450
466
Apr
79.5%
12.2 min
560
562
May
79.7%
14.1 min
664
678
Jun
79.0%
17.1 min
615
644
Jul
70.8%
33.3 min
610
656
Aug
77.0%
12.2 min
257
267
Sep
Fewer than 200 measured departures
—
198
202
Oct
82.8%
11.9 min
564
566
Nov
89.9%
2.8 min
416
416
Dec
73.3%
21.6 min
400
404
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 time77.9%4,407
Delayed >15 min19.0%1,073
Cancelled3.1%175
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.