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 delay08:00–09:002.9min · 322 recorded · 320 measured
Gap to highest-delay hour17.1min08:00 ↔ 19:00
Recorded flights3,660RSW–STL
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
20.010.00.0
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
5802900
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
—
132
133
06:00
Fewer than 200 measured departures
—
132
132
07:00
91.7%
3.4 min
576
580
08:00
90.0%
2.9 min
320
322
09:00
Fewer than 200 measured departures
—
144
144
10:00
80.6%
16.3 min
206
206
11:00
Fewer than 200 measured departures
—
100
100
12:00
76.0%
8.8 min
237
238
13:00
Fewer than 200 measured departures
—
133
137
14:00
Fewer than 200 measured departures
—
149
149
15:00
Fewer than 200 measured departures
—
153
154
16:00
Fewer than 200 measured departures
—
98
101
17:00
Fewer than 200 measured departures
—
159
160
18:00
76.3%
12.9 min
397
398
19:00
60.5%
20.0 min
347
350
20:00
63.1%
19.8 min
336
339
21:00
Fewer than 200 measured departures
—
16
17
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
15.37.60.0
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
5782890
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
74.7%
14.9 min
530
536
Tuesday
81.1%
9.7 min
477
479
Wednesday
80.9%
9.4 min
470
471
Thursday
78.4%
8.8 min
524
524
Friday
81.5%
8.7 min
536
537
Saturday
79.4%
11.7 min
533
535
Sunday
73.8%
15.3 min
565
578
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
16.88.40.0
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
5032520
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
80.9%
8.3 min
356
366
Feb
80.1%
9.5 min
371
374
Mar
75.6%
15.5 min
496
503
Apr
82.0%
9.0 min
366
366
May
77.3%
12.4 min
356
356
Jun
72.2%
16.4 min
266
266
Jul
68.9%
16.2 min
254
254
Aug
Fewer than 200 measured departures
—
129
130
Sep
Fewer than 200 measured departures
—
120
120
Oct
83.9%
5.0 min
274
274
Nov
83.2%
7.0 min
322
323
Dec
73.2%
16.8 min
325
328
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 time77.9%2,851
Delayed >15 min21.4%784
Cancelled0.7%25
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.