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 delay08:00–09:009.1min · 576 recorded · 574 measured
Gap to highest-delay hour10.4min08:00 ↔ 18:00
Recorded flights1,590DEN–SYR
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
19.59.70.0
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
5762880
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
No observations
—
—
—
07:00
Fewer than 200 measured departures
—
78
81
08:00
88.9%
9.1 min
574
576
09:00
Fewer than 200 measured departures
—
139
139
10:00
Fewer than 200 measured departures
—
1
1
11:00
No observations
—
—
—
12:00
No observations
—
—
—
13:00
Fewer than 200 measured departures
—
1
1
14:00
No observations
—
—
—
15:00
No observations
—
—
—
16:00
Fewer than 200 measured departures
—
137
137
17:00
77.8%
15.2 min
419
421
18:00
72.7%
19.5 min
234
234
19:00
No observations
—
—
—
20:00
No observations
—
—
—
21:00
No observations
—
—
—
22:00
No observations
—
—
—
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
18.49.20.0
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
2361180
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
81.4%
15.7 min
231
234
Tuesday
79.5%
18.4 min
210
210
Wednesday
83.5%
13.5 min
224
224
Thursday
83.8%
13.2 min
235
236
Friday
85.2%
14.2 min
236
236
Saturday
83.7%
8.6 min
215
216
Sunday
80.2%
10.6 min
232
234
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
24.912.50.0
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
2281140
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
—
120
124
Feb
Fewer than 200 measured departures
—
112
112
Mar
Fewer than 200 measured departures
—
123
124
Apr
Fewer than 200 measured departures
—
119
120
May
Fewer than 200 measured departures
—
141
142
Jun
Fewer than 200 measured departures
—
172
172
Jul
75.0%
24.9 min
228
228
Aug
Fewer than 200 measured departures
—
114
114
Sep
Fewer than 200 measured departures
—
108
108
Oct
Fewer than 200 measured departures
—
102
102
Nov
Fewer than 200 measured departures
—
120
120
Dec
Fewer than 200 measured departures
—
124
124
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 time82.1%1,306
Delayed >15 min17.4%277
Cancelled0.4%7
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.