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 delay07:00–08:00-2.1min · 250 recorded · 245 measured
Gap to highest-delay hour29.5min07:00 ↔ 16:00
Recorded flights4,855PHL–PIT
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
27.412.6-2.1
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
5952980
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
—
92
94
06:00
92.1%
2.5 min
330
336
07:00
93.9%
-2.1 min
245
250
08:00
91.5%
4.0 min
588
595
09:00
Fewer than 200 measured departures
—
30
30
10:00
85.3%
9.6 min
382
389
11:00
Fewer than 200 measured departures
—
135
135
12:00
76.6%
25.0 min
239
244
13:00
Fewer than 200 measured departures
—
188
192
14:00
75.6%
15.6 min
291
293
15:00
69.3%
24.5 min
280
287
16:00
69.4%
27.4 min
320
332
17:00
67.0%
26.2 min
351
364
18:00
74.3%
16.5 min
241
245
19:00
70.1%
26.6 min
444
471
20:00
Fewer than 200 measured departures
—
57
58
21:00
79.2%
13.1 min
452
462
22:00
Fewer than 200 measured departures
—
70
76
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
18.09.00.0
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
7493750
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.3%
18.0 min
719
738
Tuesday
82.5%
10.1 min
668
680
Wednesday
86.6%
7.9 min
657
674
Thursday
78.3%
15.9 min
705
728
Friday
78.1%
17.3 min
726
743
Saturday
78.6%
13.8 min
529
543
Sunday
80.4%
13.9 min
733
749
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
29.514.70.0
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
6473240
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
81.4%
18.9 min
204
211
Feb
85.1%
5.0 min
235
255
Mar
86.2%
5.0 min
239
244
Apr
84.5%
9.4 min
624
624
May
84.2%
8.4 min
631
647
Jun
70.9%
29.5 min
499
518
Jul
68.9%
26.8 min
476
520
Aug
64.6%
26.9 min
277
278
Sep
80.3%
12.6 min
244
244
Oct
85.0%
9.5 min
608
610
Nov
88.7%
1.7 min
434
434
Dec
79.3%
16.0 min
266
270
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 time78.3%3,800
Delayed >15 min19.3%937
Cancelled2.4%118
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.