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 delay17:00–18:0011.4min · 677 recorded · 671 measured
Gap to highest-delay hour0.3min17:00 ↔ 08:00
Recorded flights1,519ATW–DEN
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
11.75.80.0
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
6773390
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
No observations
—
—
—
08:00
82.3%
11.7 min
651
657
09:00
Fewer than 200 measured departures
—
20
20
10:00
Fewer than 200 measured departures
—
8
8
11:00
No observations
—
—
—
12:00
Fewer than 200 measured departures
—
8
8
13:00
Fewer than 200 measured departures
—
31
31
14:00
Fewer than 200 measured departures
—
5
5
15:00
Fewer than 200 measured departures
—
12
12
16:00
Fewer than 200 measured departures
—
40
40
17:00
79.6%
11.4 min
671
677
18:00
Fewer than 200 measured departures
—
2
2
19:00
Fewer than 200 measured departures
—
27
27
20:00
Fewer than 200 measured departures
—
30
32
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
20.010.00.0
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
2461230
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
80.5%
9.0 min
210
212
Tuesday
81.7%
12.3 min
208
210
Wednesday
Fewer than 200 measured departures
—
199
199
Thursday
70.8%
20.0 min
240
243
Friday
82.9%
11.8 min
210
213
Saturday
Fewer than 200 measured departures
—
194
196
Sunday
75.8%
17.2 min
244
246
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
19.29.60.0
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
2041020
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
—
124
124
Feb
Fewer than 200 measured departures
—
111
112
Mar
Fewer than 200 measured departures
—
118
124
Apr
Fewer than 200 measured departures
—
130
130
May
Fewer than 200 measured departures
—
134
136
Jun
Fewer than 200 measured departures
—
159
160
Jul
72.9%
19.2 min
203
204
Aug
Fewer than 200 measured departures
—
82
82
Sep
Fewer than 200 measured departures
—
76
76
Oct
Fewer than 200 measured departures
—
128
128
Nov
Fewer than 200 measured departures
—
117
118
Dec
Fewer than 200 measured departures
—
123
125
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 time78.6%1,194
Delayed >15 min20.5%311
Cancelled0.9%14
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.