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 13, 2024 → Jul 31, 2026
Lowest average delay12:00–13:0011.2min · 209 recorded · 206 measured
Recorded flights1,711ISP–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
11.25.60.0
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
2091050
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
—
21
22
06:00
Fewer than 200 measured departures
—
80
86
07:00
Fewer than 200 measured departures
—
27
28
08:00
Fewer than 200 measured departures
—
58
59
09:00
Fewer than 200 measured departures
—
99
102
10:00
Fewer than 200 measured departures
—
183
190
11:00
Fewer than 200 measured departures
—
133
136
12:00
76.2%
11.2 min
206
209
13:00
Fewer than 200 measured departures
—
137
138
14:00
Fewer than 200 measured departures
—
179
187
15:00
Fewer than 200 measured departures
—
123
124
16:00
Fewer than 200 measured departures
—
132
133
17:00
Fewer than 200 measured departures
—
71
71
18:00
Fewer than 200 measured departures
—
38
39
19:00
Fewer than 200 measured departures
—
72
73
20:00
Fewer than 200 measured departures
—
50
50
21:00
Fewer than 200 measured departures
—
52
56
22:00
Fewer than 200 measured departures
—
8
8
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
23.912.00.0
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
3541770
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
73.6%
19.5 min
258
272
Tuesday
Fewer than 200 measured departures
—
103
104
Wednesday
Fewer than 200 measured departures
—
169
170
Thursday
80.4%
7.3 min
209
213
Friday
77.7%
11.2 min
282
285
Saturday
71.5%
15.9 min
351
354
Sunday
67.3%
23.9 min
297
313
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
8.84.40.0
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
2291150
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
149
154
Feb
Fewer than 200 measured departures
—
192
202
Mar
Fewer than 200 measured departures
—
180
186
Apr
78.0%
8.8 min
227
229
May
Fewer than 200 measured departures
—
168
170
Jun
Fewer than 200 measured departures
—
122
126
Jul
Fewer than 200 measured departures
—
125
126
Aug
Fewer than 200 measured departures
—
84
84
Sep
Fewer than 200 measured departures
—
70
72
Oct
Fewer than 200 measured departures
—
80
84
Nov
Fewer than 200 measured departures
—
108
108
Dec
Fewer than 200 measured departures
—
164
170
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 time73.2%1,252
Delayed >15 min24.4%417
Cancelled2.5%42
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.