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 delay07:00–08:00-0.6min · 349 recorded · 346 measured
Gap to highest-delay hour29.0min07:00 ↔ 19:00
Recorded flights2,903BUF–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
28.413.9-0.6
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
3491750
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
—
112
112
06:00
95.0%
0.4 min
280
281
07:00
96.0%
-0.6 min
346
349
08:00
95.6%
1.1 min
229
230
09:00
Fewer than 200 measured departures
—
108
108
10:00
Fewer than 200 measured departures
—
134
136
11:00
Fewer than 200 measured departures
—
62
63
12:00
Fewer than 200 measured departures
—
112
112
13:00
Fewer than 200 measured departures
—
166
166
14:00
Fewer than 200 measured departures
—
173
174
15:00
Fewer than 200 measured departures
—
77
77
16:00
63.6%
25.7 min
209
212
17:00
70.0%
15.1 min
210
210
18:00
64.8%
22.1 min
250
255
19:00
56.4%
28.4 min
218
222
20:00
Fewer than 200 measured departures
—
149
149
21:00
Fewer than 200 measured departures
—
33
34
22:00
Fewer than 200 measured departures
—
13
13
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
17.38.60.0
MonTueWedThuFriSatSun
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
4672340
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
80.9%
10.8 min
430
438
Tuesday
82.1%
9.6 min
335
337
Wednesday
81.9%
8.6 min
342
345
Thursday
76.5%
10.5 min
438
438
Friday
82.6%
9.3 min
432
432
Saturday
74.0%
14.7 min
465
467
Sunday
72.2%
17.3 min
439
446
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
19.19.60.0
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
3581790
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
87.7%
2.5 min
277
280
Feb
77.8%
15.7 min
306
312
Mar
68.8%
19.1 min
353
358
Apr
79.8%
7.9 min
342
344
May
75.2%
13.3 min
307
308
Jun
Fewer than 200 measured departures
—
183
183
Jul
Fewer than 200 measured departures
—
174
174
Aug
Fewer than 200 measured departures
—
150
150
Sep
Fewer than 200 measured departures
—
130
130
Oct
Fewer than 200 measured departures
—
192
192
Nov
86.5%
7.5 min
230
232
Dec
76.0%
14.0 min
237
240
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 time77.7%2,256
Delayed >15 min21.5%625
Cancelled0.8%22
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.