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 delay08:00–09:000.7min · 472 recorded · 467 measured
Gap to highest-delay hour21.3min08:00 ↔ 19:00
Recorded flights2,260DEN–LBL
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
22.011.00.0
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
5462730
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
—
75
75
08:00
88.9%
0.7 min
467
472
09:00
No observations
—
—
—
10:00
Fewer than 200 measured departures
—
15
15
11:00
91.0%
4.0 min
536
546
12:00
Fewer than 200 measured departures
—
43
44
13:00
No observations
—
—
—
14:00
No observations
—
—
—
15:00
Fewer than 200 measured departures
—
84
88
16:00
75.2%
12.8 min
479
495
17:00
No observations
—
—
—
18:00
No observations
—
—
—
19:00
74.3%
22.0 min
506
525
20:00
No observations
—
—
—
21:00
No observations
—
—
—
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
13.86.90.0
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
81.3%
10.2 min
374
376
Tuesday
Fewer than 200 measured departures
—
192
196
Wednesday
88.9%
5.2 min
361
372
Thursday
82.8%
5.3 min
366
368
Friday
83.1%
7.4 min
360
376
Saturday
Fewer than 200 measured departures
—
187
196
Sunday
82.5%
13.8 min
365
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
22.711.2-0.3
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
86.1%
8.5 min
209
214
Feb
Fewer than 200 measured departures
—
180
192
Mar
88.2%
-0.3 min
204
212
Apr
80.1%
11.8 min
201
206
May
81.5%
22.7 min
205
212
Jun
77.0%
19.0 min
204
206
Jul
76.1%
8.0 min
209
214
Aug
Fewer than 200 measured departures
—
102
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
87.5%
4.5 min
216
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 time81.3%1,837
Delayed >15 min16.3%368
Cancelled2.4%55
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.