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 delay07:00–08:000.7min · 562 recorded · 557 measured
Gap to highest-delay hour12.1min07:00 ↔ 16:00
Recorded flights4,409LAX–MCI
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
12.86.40.0
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
6623310
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
—
92
93
06:00
Fewer than 200 measured departures
—
178
180
07:00
92.6%
0.7 min
557
562
08:00
88.1%
4.5 min
202
203
09:00
90.2%
2.4 min
656
662
10:00
83.3%
8.0 min
251
253
11:00
Fewer than 200 measured departures
—
72
73
12:00
Fewer than 200 measured departures
—
87
87
13:00
Fewer than 200 measured departures
—
48
49
14:00
Fewer than 200 measured departures
—
157
157
15:00
85.5%
5.5 min
639
642
16:00
76.7%
12.8 min
459
463
17:00
Fewer than 200 measured departures
—
121
123
18:00
77.3%
10.5 min
440
442
19:00
Fewer than 200 measured departures
—
161
162
20:00
Fewer than 200 measured departures
—
141
142
21:00
Fewer than 200 measured departures
—
74
76
22:00
Fewer than 200 measured departures
—
20
20
23:00
Fewer than 200 measured departures
—
20
20
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
13.86.90.0
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
6793400
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
78.1%
12.5 min
661
666
Tuesday
85.2%
6.4 min
581
583
Wednesday
86.0%
3.2 min
558
559
Thursday
79.9%
7.2 min
675
679
Friday
81.7%
9.0 min
665
668
Saturday
82.4%
8.0 min
598
604
Sunday
76.0%
13.8 min
637
650
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
17.58.70.0
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
5422710
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
84.0%
7.2 min
243
254
Feb
81.3%
8.8 min
262
263
Mar
84.8%
10.8 min
382
384
Apr
82.3%
5.7 min
402
402
May
82.4%
5.8 min
482
489
Jun
77.4%
10.7 min
539
540
Jul
76.7%
10.6 min
536
542
Aug
86.6%
1.9 min
224
227
Sep
86.3%
5.8 min
226
226
Oct
83.6%
8.9 min
342
342
Nov
82.4%
6.8 min
393
394
Dec
73.8%
17.5 min
344
346
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 time80.5%3,550
Delayed >15 min18.7%825
Cancelled0.8%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.