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 delay05:00–06:001.1min · 448 recorded · 444 measured
Gap to highest-delay hour21.7min05:00 ↔ 22:00
Recorded flights3,164LAS–SBA
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
22.811.40.0
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
4482240
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
95.3%
1.1 min
444
448
06:00
Fewer than 200 measured departures
—
110
110
07:00
Fewer than 200 measured departures
—
64
64
08:00
Fewer than 200 measured departures
—
115
116
09:00
84.6%
5.9 min
234
234
10:00
81.3%
6.6 min
284
285
11:00
Fewer than 200 measured departures
—
125
125
12:00
Fewer than 200 measured departures
—
168
169
13:00
Fewer than 200 measured departures
—
102
102
14:00
Fewer than 200 measured departures
—
138
138
15:00
78.9%
9.7 min
289
289
16:00
61.3%
18.9 min
367
370
17:00
Fewer than 200 measured departures
—
54
55
18:00
Fewer than 200 measured departures
—
63
63
19:00
Fewer than 200 measured departures
—
139
142
20:00
Fewer than 200 measured departures
—
53
54
21:00
Fewer than 200 measured departures
—
172
173
22:00
57.7%
22.8 min
215
227
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
12.96.50.0
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
5342670
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
75.3%
11.1 min
515
520
Tuesday
80.6%
9.9 min
382
384
Wednesday
83.1%
6.3 min
378
380
Thursday
73.9%
11.3 min
514
520
Friday
74.0%
12.9 min
526
534
Saturday
85.4%
4.9 min
350
352
Sunday
76.7%
10.1 min
471
474
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
11.75.80.0
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
3241620
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
81.3%
7.8 min
257
260
Feb
80.2%
9.3 min
253
254
Mar
79.9%
7.5 min
324
324
Apr
79.5%
6.8 min
302
302
May
76.4%
10.0 min
309
310
Jun
76.5%
11.3 min
281
284
Jul
77.4%
11.7 min
287
292
Aug
Fewer than 200 measured departures
—
140
140
Sep
Fewer than 200 measured departures
—
138
138
Oct
79.3%
9.3 min
256
258
Nov
78.2%
8.5 min
298
302
Dec
77.3%
10.9 min
291
300
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 time77.1%2,439
Delayed >15 min22.0%697
Cancelled0.9%28
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.