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 delay11:00–12:005.5min · 655 recorded · 652 measured
Gap to highest-delay hour20.2min11:00 ↔ 19:00
Recorded flights2,205DEN–SUN
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
25.712.80.0
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
6553280
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
Fewer than 200 measured departures
—
1
1
07:00
92.6%
6.2 min
443
445
08:00
No observations
—
—
—
09:00
No observations
—
—
—
10:00
Fewer than 200 measured departures
—
4
4
11:00
87.7%
5.5 min
652
655
12:00
No observations
—
—
—
13:00
No observations
—
—
—
14:00
82.4%
15.9 min
649
652
15:00
No observations
—
—
—
16:00
No observations
—
—
—
17:00
No observations
—
—
—
18:00
No observations
—
—
—
19:00
72.8%
25.7 min
444
446
20:00
Fewer than 200 measured departures
—
2
2
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
15.47.70.0
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
3241620
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
82.9%
10.7 min
309
313
Tuesday
84.4%
15.4 min
308
309
Wednesday
84.8%
11.3 min
310
310
Thursday
84.7%
14.3 min
313
313
Friday
84.1%
14.0 min
320
324
Saturday
85.3%
11.2 min
319
319
Sunday
82.9%
12.5 min
316
317
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
21.210.60.0
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
2481240
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
86.6%
13.4 min
246
248
Feb
80.2%
20.6 min
222
224
Mar
89.0%
4.8 min
245
245
Apr
Fewer than 200 measured departures
—
131
131
May
Fewer than 200 measured departures
—
156
158
Jun
75.0%
21.2 min
240
240
Jul
81.7%
20.2 min
246
246
Aug
Fewer than 200 measured departures
—
124
124
Sep
Fewer than 200 measured departures
—
120
120
Oct
Fewer than 200 measured departures
—
151
151
Nov
Fewer than 200 measured departures
—
118
120
Dec
Fewer than 200 measured departures
—
196
198
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 time83.8%1,847
Delayed >15 min15.8%348
Cancelled0.5%10
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.