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 delay22:00–23:008.4min · 361 recorded · 359 measured
Gap to highest-delay hour18.9min22:00 ↔ 15:00
Recorded flights4,571CLT–SEA
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
27.213.60.0
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
5072540
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
Fewer than 200 measured departures
—
185
186
06:00
95.0%
9.2 min
219
221
07:00
89.3%
27.1 min
505
507
08:00
Fewer than 200 measured departures
—
166
172
09:00
79.6%
9.7 min
475
477
10:00
Fewer than 200 measured departures
—
117
117
11:00
Fewer than 200 measured departures
—
8
8
12:00
Fewer than 200 measured departures
—
133
138
13:00
78.0%
14.5 min
499
502
14:00
Fewer than 200 measured departures
—
33
33
15:00
64.1%
27.2 min
273
273
16:00
64.9%
23.7 min
425
429
17:00
Fewer than 200 measured departures
—
181
183
18:00
68.1%
20.8 min
420
423
19:00
Fewer than 200 measured departures
—
34
34
20:00
Fewer than 200 measured departures
—
152
154
21:00
Fewer than 200 measured departures
—
188
195
22:00
88.6%
8.4 min
359
361
23:00
Fewer than 200 measured departures
—
158
158
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
22.611.30.0
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
6733370
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.5%
22.1 min
649
660
Tuesday
81.9%
11.3 min
630
634
Wednesday
80.5%
11.9 min
632
635
Thursday
77.0%
13.6 min
666
668
Friday
78.0%
13.4 min
659
662
Saturday
72.8%
22.6 min
633
639
Sunday
75.3%
21.2 min
661
673
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
29.014.50.0
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
6123060
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
85.5%
7.7 min
337
358
Feb
85.4%
6.2 min
315
318
Mar
77.4%
13.5 min
359
366
Apr
79.2%
15.7 min
360
360
May
78.5%
13.4 min
446
446
Jun
69.1%
28.8 min
570
576
Jul
65.4%
29.0 min
609
612
Aug
68.7%
18.8 min
252
252
Sep
85.4%
13.2 min
240
240
Oct
83.9%
9.0 min
366
366
Nov
88.9%
10.2 min
324
325
Dec
79.3%
15.8 min
352
352
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 time76.9%3,514
Delayed >15 min22.2%1,016
Cancelled0.9%41
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.