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 delay06:00–07:002.0min · 655 recorded · 651 measured
Gap to highest-delay hour26.1min06:00 ↔ 20:00
Recorded flights2,611MIA–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
28.114.10.0
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
6553280
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
—
1
1
06:00
93.6%
2.0 min
651
655
07:00
Fewer than 200 measured departures
—
1
1
08:00
Fewer than 200 measured departures
—
67
70
09:00
Fewer than 200 measured departures
—
13
13
10:00
Fewer than 200 measured departures
—
1
1
11:00
Fewer than 200 measured departures
—
35
35
12:00
Fewer than 200 measured departures
—
109
111
13:00
Fewer than 200 measured departures
—
81
82
14:00
Fewer than 200 measured departures
—
170
172
15:00
70.1%
17.2 min
318
323
16:00
Fewer than 200 measured departures
—
41
41
17:00
Fewer than 200 measured departures
—
28
28
18:00
Fewer than 200 measured departures
—
150
153
19:00
69.4%
24.5 min
412
419
20:00
62.8%
28.1 min
250
252
21:00
75.5%
11.7 min
249
254
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
27.113.60.0
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
4712360
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
73.4%
19.1 min
353
365
Tuesday
84.4%
6.7 min
326
333
Wednesday
82.1%
12.3 min
340
343
Thursday
77.8%
14.1 min
356
356
Friday
78.1%
13.0 min
366
367
Saturday
71.2%
21.2 min
468
471
Sunday
66.9%
27.1 min
368
376
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
30.415.20.0
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
3751880
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
83.1%
12.8 min
266
278
Feb
79.1%
12.1 min
287
291
Mar
73.0%
18.7 min
366
375
Apr
76.6%
13.4 min
278
280
May
73.0%
16.3 min
267
269
Jun
71.9%
26.0 min
253
258
Jul
61.7%
30.4 min
261
261
Aug
Fewer than 200 measured departures
—
74
74
Sep
Fewer than 200 measured departures
—
60
60
Oct
Fewer than 200 measured departures
—
102
102
Nov
Fewer than 200 measured departures
—
147
147
Dec
81.5%
12.1 min
216
216
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 time74.9%1,955
Delayed >15 min23.8%622
Cancelled1.3%34
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.