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 delay00:00–01:004.0min · 317 recorded · 316 measured
Gap to highest-delay hour39.8min00:00 ↔ 08:00
Recorded flights5,672CLT–SFO
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
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
43.821.90.0
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
8854430
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
88.6%
4.0 min
316
317
01:00
No observations
—
—
—
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
Fewer than 200 measured departures
—
181
183
06:00
Fewer than 200 measured departures
—
28
28
07:00
90.6%
12.6 min
523
530
08:00
79.6%
43.8 min
206
206
09:00
79.8%
22.2 min
877
885
10:00
Fewer than 200 measured departures
—
105
111
11:00
Fewer than 200 measured departures
—
33
33
12:00
68.2%
16.9 min
270
270
13:00
75.8%
18.6 min
528
529
14:00
Fewer than 200 measured departures
—
35
35
15:00
Fewer than 200 measured departures
—
188
190
16:00
74.9%
13.6 min
259
260
17:00
60.0%
25.9 min
260
263
18:00
63.5%
20.6 min
458
463
19:00
59.2%
25.4 min
213
221
20:00
55.4%
27.3 min
471
474
21:00
Fewer than 200 measured departures
—
41
42
22:00
82.7%
7.2 min
330
332
23:00
74.6%
9.6 min
291
300
Day of week
On-time departuresPartial coverage: only airlines that report on-time data to the US DOT
100.050.00.0
MonTueWedThuFriSatSun
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
26.013.00.0
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
8694350
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
73.1%
19.5 min
828
835
Tuesday
79.9%
16.7 min
712
718
Wednesday
78.9%
15.6 min
758
766
Thursday
71.7%
17.4 min
858
863
Friday
76.2%
14.0 min
826
840
Saturday
76.6%
14.7 min
773
781
Sunday
71.0%
26.0 min
858
869
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
33.016.50.0
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
5942970
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
80.2%
8.8 min
399
428
Feb
80.9%
11.8 min
424
428
Mar
78.5%
15.9 min
536
540
Apr
80.1%
17.5 min
558
558
May
74.2%
17.1 min
592
594
Jun
62.3%
26.5 min
547
561
Jul
59.2%
33.0 min
563
567
Aug
73.1%
12.7 min
260
262
Sep
82.1%
13.1 min
273
273
Oct
83.2%
10.1 min
482
482
Nov
79.2%
17.2 min
470
470
Dec
75.8%
20.0 min
509
509
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 time74.3%4,217
Delayed >15 min24.6%1,396
Cancelled1.0%59
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.