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 delay06:00–07:005.0min · 576 recorded · 572 measured
Gap to highest-delay hour24.1min06:00 ↔ 17:00
Recorded flights3,735CLT–GRR
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
29.014.50.0
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
5762880
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
90.2%
5.0 min
572
576
07:00
Fewer than 200 measured departures
—
46
46
08:00
86.4%
7.7 min
323
327
09:00
Fewer than 200 measured departures
—
178
180
10:00
Fewer than 200 measured departures
—
115
118
11:00
83.5%
15.5 min
413
416
12:00
Fewer than 200 measured departures
—
105
106
13:00
Fewer than 200 measured departures
—
175
176
14:00
Fewer than 200 measured departures
—
167
168
15:00
Fewer than 200 measured departures
—
69
69
16:00
72.4%
16.6 min
315
320
17:00
64.5%
29.0 min
273
276
18:00
Fewer than 200 measured departures
—
101
106
19:00
72.9%
17.5 min
262
262
20:00
Fewer than 200 measured departures
—
155
158
21:00
Fewer than 200 measured departures
—
167
170
22:00
75.3%
17.0 min
259
261
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
18.29.10.0
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
5582790
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
76.5%
12.6 min
528
538
Tuesday
82.3%
14.1 min
514
518
Wednesday
84.3%
10.0 min
527
530
Thursday
75.9%
15.7 min
535
539
Friday
77.3%
17.9 min
524
530
Saturday
77.4%
17.3 min
514
522
Sunday
75.2%
18.2 min
553
558
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
29.514.70.0
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
3721860
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
80.1%
11.9 min
281
300
Feb
79.5%
9.7 min
298
303
Mar
84.5%
13.6 min
368
372
Apr
80.3%
15.2 min
360
360
May
80.4%
11.3 min
372
372
Jun
70.6%
25.4 min
354
358
Jul
67.3%
29.5 min
364
368
Aug
Fewer than 200 measured departures
—
168
170
Sep
Fewer than 200 measured departures
—
172
172
Oct
83.2%
6.8 min
274
274
Nov
81.6%
13.8 min
326
326
Dec
74.0%
15.4 min
358
360
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 time77.5%2,896
Delayed >15 min21.4%799
Cancelled1.1%40
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.