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 delay23:00–00:007.0min · 331 recorded · 322 measured
Gap to highest-delay hour3.4min23:00 ↔ 10:00
Recorded flights2,921OGG–SAN
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
10.45.20.0
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
7413710
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
No observations
—
—
—
07:00
Fewer than 200 measured departures
—
22
22
08:00
Fewer than 200 measured departures
—
9
9
09:00
Fewer than 200 measured departures
—
182
182
10:00
83.5%
10.4 min
738
741
11:00
85.0%
7.7 min
227
227
12:00
85.5%
9.8 min
283
283
13:00
Fewer than 200 measured departures
—
88
90
14:00
Fewer than 200 measured departures
—
131
131
15:00
Fewer than 200 measured departures
—
79
80
16:00
Fewer than 200 measured departures
—
41
41
17:00
Fewer than 200 measured departures
—
78
78
18:00
82.1%
7.7 min
335
340
19:00
Fewer than 200 measured departures
—
49
49
20:00
Fewer than 200 measured departures
—
130
130
21:00
Fewer than 200 measured departures
—
19
19
22:00
Fewer than 200 measured departures
—
165
168
23:00
76.7%
7.0 min
322
331
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
12.36.20.0
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
4182090
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.3%
9.7 min
416
418
Tuesday
86.2%
5.4 min
412
418
Wednesday
85.4%
6.8 min
411
417
Thursday
84.0%
8.7 min
412
414
Friday
78.8%
12.3 min
415
418
Saturday
80.2%
9.6 min
415
418
Sunday
79.9%
9.7 min
417
418
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
15.37.60.0
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
3101550
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
84.6%
8.2 min
247
248
Feb
78.1%
13.7 min
224
224
Mar
80.9%
9.4 min
299
302
Apr
85.3%
7.2 min
300
300
May
85.4%
7.4 min
309
310
Jun
80.7%
9.0 min
300
300
Jul
83.8%
7.2 min
308
310
Aug
Fewer than 200 measured departures
—
121
124
Sep
Fewer than 200 measured departures
—
118
120
Oct
Fewer than 200 measured departures
—
196
200
Nov
83.9%
6.8 min
236
236
Dec
73.3%
15.3 min
240
247
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 time81.3%2,375
Delayed >15 min17.9%523
Cancelled0.8%23
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.