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 delay08:00–09:003.7min · 370 recorded · 368 measured
Gap to highest-delay hour17.5min08:00 ↔ 18:00
Recorded flights2,261DEN–LAR
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
21.210.60.0
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
6123060
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
—
145
148
06:00
No observations
—
—
—
07:00
No observations
—
—
—
08:00
89.1%
3.7 min
368
370
09:00
No observations
—
—
—
10:00
88.6%
12.9 min
367
370
11:00
No observations
—
—
—
12:00
No observations
—
—
—
13:00
No observations
—
—
—
14:00
No observations
—
—
—
15:00
No observations
—
—
—
16:00
72.3%
21.1 min
530
551
17:00
Fewer than 200 measured departures
—
84
86
18:00
73.3%
21.2 min
584
612
19:00
No observations
—
—
—
20:00
No observations
—
—
—
21:00
Fewer than 200 measured departures
—
122
124
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
22.211.10.0
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
3761880
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.5%
14.7 min
365
376
Tuesday
Fewer than 200 measured departures
—
189
196
Wednesday
81.6%
22.2 min
365
372
Thursday
79.3%
11.1 min
362
369
Friday
78.3%
15.7 min
364
376
Saturday
Fewer than 200 measured departures
—
188
196
Sunday
81.2%
13.4 min
367
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
36.918.50.0
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
2161080
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
76.7%
17.0 min
206
214
Feb
Fewer than 200 measured departures
—
189
192
Mar
84.1%
9.1 min
201
213
Apr
81.0%
11.0 min
200
206
May
76.9%
9.6 min
203
212
Jun
71.9%
36.9 min
203
206
Jul
72.4%
16.6 min
203
214
Aug
Fewer than 200 measured departures
—
106
106
Sep
Fewer than 200 measured departures
—
102
102
Oct
Fewer than 200 measured departures
—
176
176
Nov
Fewer than 200 measured departures
—
197
204
Dec
84.6%
5.3 min
214
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 time77.3%1,747
Delayed >15 min20.0%453
Cancelled2.7%61
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.