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 delay08:00–09:005.0min · 254 recorded · 248 measured
Gap to highest-delay hour18.6min08:00 ↔ 14:00
Recorded flights1,971PHL–SRQ
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
23.611.80.0
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
3801900
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
—
17
18
06:00
Fewer than 200 measured departures
—
6
8
07:00
Fewer than 200 measured departures
—
5
6
08:00
87.5%
5.0 min
248
254
09:00
Fewer than 200 measured departures
—
162
169
10:00
Fewer than 200 measured departures
—
141
151
11:00
77.7%
12.8 min
229
235
12:00
76.6%
20.3 min
321
330
13:00
Fewer than 200 measured departures
—
91
92
14:00
74.0%
23.6 min
361
380
15:00
Fewer than 200 measured departures
—
77
80
16:00
Fewer than 200 measured departures
—
64
65
17:00
Fewer than 200 measured departures
—
64
66
18:00
Fewer than 200 measured departures
—
38
39
19:00
Fewer than 200 measured departures
—
33
36
20:00
Fewer than 200 measured departures
—
27
27
21:00
Fewer than 200 measured departures
—
10
12
22:00
Fewer than 200 measured departures
—
3
3
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
31.015.50.0
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
3311660
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.3%
10.7 min
256
280
Tuesday
84.2%
13.3 min
234
238
Wednesday
81.3%
9.2 min
208
208
Thursday
75.6%
15.0 min
287
291
Friday
79.2%
9.7 min
284
295
Saturday
76.7%
23.4 min
317
328
Sunday
74.9%
31.0 min
311
331
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
33.416.70.0
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
2741370
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
176
186
Feb
Fewer than 200 measured departures
—
199
218
Mar
76.7%
33.4 min
262
274
Apr
78.5%
7.6 min
246
256
May
Fewer than 200 measured departures
—
140
144
Jun
Fewer than 200 measured departures
—
142
142
Jul
Fewer than 200 measured departures
—
146
148
Aug
Fewer than 200 measured departures
—
64
64
Sep
Fewer than 200 measured departures
—
4
4
Oct
Fewer than 200 measured departures
—
116
128
Nov
Fewer than 200 measured departures
—
191
191
Dec
73.9%
20.0 min
211
216
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 time75.4%1,487
Delayed >15 min20.8%410
Cancelled3.8%74
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.