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 delay08:00–09:004.6min · 375 recorded · 366 measured
Gap to highest-delay hour1.1min08:00 ↔ 06:00
Recorded flights2,018JAX–LGA
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
5.72.90.0
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
3751880
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
90.1%
5.7 min
242
248
07:00
Fewer than 200 measured departures
—
28
28
08:00
88.5%
4.6 min
366
375
09:00
Fewer than 200 measured departures
—
21
22
10:00
Fewer than 200 measured departures
—
2
2
11:00
87.9%
4.9 min
282
289
12:00
Fewer than 200 measured departures
—
117
122
13:00
Fewer than 200 measured departures
—
8
9
14:00
Fewer than 200 measured departures
—
160
165
15:00
Fewer than 200 measured departures
—
168
171
16:00
Fewer than 200 measured departures
—
49
50
17:00
Fewer than 200 measured departures
—
64
69
18:00
Fewer than 200 measured departures
—
187
190
19:00
Fewer than 200 measured departures
—
138
143
20:00
Fewer than 200 measured departures
—
120
134
21:00
Fewer than 200 measured departures
—
1
1
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
14.17.10.0
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
3121560
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
82.1%
13.7 min
262
276
Tuesday
87.7%
6.3 min
260
271
Wednesday
87.2%
5.1 min
265
268
Thursday
80.2%
9.6 min
268
276
Friday
80.9%
9.4 min
298
303
Saturday
83.7%
11.3 min
301
312
Sunday
82.6%
14.1 min
299
312
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
11.55.80.0
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
3681840
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
137
142
Feb
Fewer than 200 measured departures
—
122
131
Mar
Fewer than 200 measured departures
—
123
138
Apr
Fewer than 200 measured departures
—
176
176
May
Fewer than 200 measured departures
—
154
154
Jun
Fewer than 200 measured departures
—
142
148
Jul
Fewer than 200 measured departures
—
137
155
Aug
Fewer than 200 measured departures
—
4
4
Sep
Fewer than 200 measured departures
—
42
42
Oct
90.6%
3.3 min
224
226
Nov
86.7%
6.1 min
331
334
Dec
80.3%
11.5 min
361
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 time80.7%1,629
Delayed >15 min16.1%324
Cancelled3.2%65
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.