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 delay10:00–11:002.1min · 670 recorded · 660 measured
Gap to highest-delay hour12.4min10:00 ↔ 18:00
Recorded flights3,242CLT–SLC
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
14.57.30.0
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
6703350
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
Fewer than 200 measured departures
—
35
36
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
Fewer than 200 measured departures
—
10
10
08:00
Fewer than 200 measured departures
—
48
48
09:00
Fewer than 200 measured departures
—
170
172
10:00
90.2%
2.1 min
660
670
11:00
84.6%
5.9 min
201
202
12:00
82.2%
7.3 min
202
203
13:00
Fewer than 200 measured departures
—
106
107
14:00
Fewer than 200 measured departures
—
65
65
15:00
Fewer than 200 measured departures
—
91
92
16:00
No observations
—
—
—
17:00
85.1%
6.6 min
538
547
18:00
76.4%
14.5 min
288
290
19:00
Fewer than 200 measured departures
—
177
177
20:00
Fewer than 200 measured departures
—
167
170
21:00
No observations
—
—
—
22:00
Fewer than 200 measured departures
—
1
1
23:00
85.9%
8.5 min
448
451
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
12.26.10.0
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
4742370
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
82.0%
7.3 min
460
464
Tuesday
84.3%
11.2 min
451
454
Wednesday
87.6%
5.5 min
451
455
Thursday
83.1%
10.0 min
472
474
Friday
81.6%
7.3 min
461
462
Saturday
77.2%
9.7 min
451
460
Sunday
77.9%
12.2 min
462
473
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
21.110.4-0.4
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
3671840
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
85.6%
5.3 min
256
270
Feb
80.1%
14.3 min
277
277
Mar
86.0%
4.3 min
363
367
Apr
85.7%
3.0 min
258
258
May
80.8%
8.6 min
266
270
Jun
75.0%
21.1 min
340
346
Jul
74.8%
16.8 min
361
367
Aug
Fewer than 200 measured departures
—
173
173
Sep
Fewer than 200 measured departures
—
122
122
Oct
85.9%
4.9 min
256
256
Nov
90.9%
-0.4 min
242
242
Dec
78.2%
6.4 min
294
294
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 time81.1%2,628
Delayed >15 min17.9%580
Cancelled1.0%34
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.