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 delay07:00–08:00-2.0min · 304 recorded · 298 measured
Gap to highest-delay hour25.5min07:00 ↔ 20:00
Recorded flights3,442EWR–SRQ
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
23.510.7-2.0
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
9204600
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
94.2%
1.0 min
906
920
07:00
93.6%
-2.0 min
298
304
08:00
Fewer than 200 measured departures
—
82
83
09:00
Fewer than 200 measured departures
—
5
6
10:00
85.9%
13.5 min
227
232
11:00
82.9%
5.5 min
240
246
12:00
Fewer than 200 measured departures
—
169
172
13:00
Fewer than 200 measured departures
—
40
42
14:00
84.1%
7.2 min
258
265
15:00
Fewer than 200 measured departures
—
112
112
16:00
Fewer than 200 measured departures
—
1
1
17:00
Fewer than 200 measured departures
—
22
27
18:00
70.3%
22.6 min
273
285
19:00
Fewer than 200 measured departures
—
188
197
20:00
67.2%
23.5 min
484
496
21:00
Fewer than 200 measured departures
—
52
54
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
15.07.50.0
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
4982490
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
80.1%
12.8 min
477
496
Tuesday
83.7%
8.3 min
484
498
Wednesday
83.7%
12.6 min
491
494
Thursday
79.8%
14.3 min
479
486
Friday
80.1%
11.3 min
488
494
Saturday
81.1%
10.6 min
471
480
Sunday
80.1%
15.0 min
467
494
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
36.618.30.0
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
3721860
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
87.2%
3.9 min
359
372
Feb
86.4%
5.4 min
317
334
Mar
79.7%
10.7 min
369
372
Apr
82.2%
13.8 min
359
360
May
82.6%
15.0 min
310
316
Jun
78.5%
15.0 min
256
256
Jul
71.1%
36.6 min
239
248
Aug
Fewer than 200 measured departures
—
124
124
Sep
Fewer than 200 measured departures
—
120
120
Oct
85.5%
4.6 min
207
226
Nov
79.9%
10.4 min
334
346
Dec
74.7%
14.7 min
363
368
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 time79.2%2,727
Delayed >15 min18.3%630
Cancelled2.5%85
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.