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 delay18:00–19:004.6min · 247 recorded · 246 measured
Gap to highest-delay hour7.8min18:00 ↔ 19:00
Recorded flights3,936LAX–TPA
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
12.46.20.0
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
8674340
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
—
5
5
06:00
Fewer than 200 measured departures
—
132
132
07:00
89.0%
4.8 min
806
813
08:00
Fewer than 200 measured departures
—
80
80
09:00
87.7%
5.7 min
261
262
10:00
85.5%
6.6 min
860
867
11:00
Fewer than 200 measured departures
—
105
105
12:00
Fewer than 200 measured departures
—
170
171
13:00
Fewer than 200 measured departures
—
64
64
14:00
No observations
—
—
—
15:00
Fewer than 200 measured departures
—
33
33
16:00
Fewer than 200 measured departures
—
45
45
17:00
Fewer than 200 measured departures
—
8
8
18:00
85.8%
4.6 min
246
247
19:00
77.2%
12.4 min
429
432
20:00
Fewer than 200 measured departures
—
13
13
21:00
Fewer than 200 measured departures
—
97
97
22:00
84.7%
6.5 min
463
469
23:00
Fewer than 200 measured departures
—
93
93
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
11.85.90.0
MonTueWedThuFriSatSun
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
6063030
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
82.7%
8.1 min
601
606
Tuesday
85.3%
5.7 min
532
534
Wednesday
89.3%
5.9 min
544
548
Thursday
83.4%
7.5 min
591
592
Friday
81.9%
8.2 min
598
603
Saturday
83.7%
8.0 min
449
451
Sunday
79.3%
11.8 min
595
602
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
16.78.40.0
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
4172090
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
82.8%
7.5 min
338
339
Feb
87.9%
4.6 min
322
324
Mar
81.1%
10.0 min
391
397
Apr
84.7%
6.3 min
392
392
May
83.1%
6.9 min
413
417
Jun
75.3%
14.7 min
336
336
Jul
79.3%
13.3 min
338
342
Aug
Fewer than 200 measured departures
—
171
174
Sep
Fewer than 200 measured departures
—
168
168
Oct
90.8%
1.8 min
281
283
Nov
87.3%
3.6 min
370
372
Dec
76.7%
16.7 min
390
392
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 time83.0%3,268
Delayed >15 min16.3%642
Cancelled0.7%26
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.