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 delay15:00–16:0027.5min · 246 recorded · 245 measured
Recorded flights2,314SFB–TYS
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
27.513.70.0
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
2461230
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
No observations
—
—
—
06:00
Fewer than 200 measured departures
—
108
109
07:00
Fewer than 200 measured departures
—
51
51
08:00
Fewer than 200 measured departures
—
165
166
09:00
Fewer than 200 measured departures
—
86
86
10:00
Fewer than 200 measured departures
—
105
106
11:00
Fewer than 200 measured departures
—
78
78
12:00
Fewer than 200 measured departures
—
136
137
13:00
Fewer than 200 measured departures
—
176
177
14:00
Fewer than 200 measured departures
—
131
131
15:00
59.6%
27.5 min
245
246
16:00
Fewer than 200 measured departures
—
156
156
17:00
Fewer than 200 measured departures
—
173
174
18:00
Fewer than 200 measured departures
—
165
166
19:00
Fewer than 200 measured departures
—
184
184
20:00
Fewer than 200 measured departures
—
131
131
21:00
Fewer than 200 measured departures
—
122
124
22:00
Fewer than 200 measured departures
—
92
92
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
32.216.10.0
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
4202100
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
67.7%
29.6 min
368
370
Tuesday
79.6%
7.4 min
216
216
Wednesday
Fewer than 200 measured departures
—
166
166
Thursday
79.1%
9.5 min
402
402
Friday
65.8%
25.1 min
368
368
Saturday
69.0%
23.4 min
368
372
Sunday
62.5%
32.2 min
416
420
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
54.027.00.0
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
2681340
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
68.5%
23.4 min
206
212
Feb
Fewer than 200 measured departures
—
188
188
Mar
78.6%
10.8 min
238
242
Apr
Fewer than 200 measured departures
—
186
186
May
63.5%
24.7 min
200
200
Jun
50.5%
54.0 min
206
206
Jul
50.9%
50.4 min
212
212
Aug
Fewer than 200 measured departures
—
104
104
Sep
Fewer than 200 measured departures
—
94
94
Oct
Fewer than 200 measured departures
—
182
182
Nov
75.0%
10.5 min
220
220
Dec
75.0%
16.4 min
268
268
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 time70.3%1,626
Delayed >15 min29.3%678
Cancelled0.4%10
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.