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 delay08:00–09:003.2min · 349 recorded · 339 measured
Gap to highest-delay hour37.5min08:00 ↔ 19:00
Recorded flights2,260DDC–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
40.820.40.0
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
5092550
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
87.8%
3.7 min
271
272
08:00
86.4%
3.2 min
339
349
09:00
No observations
—
—
—
10:00
Fewer than 200 measured departures
—
162
167
11:00
84.9%
19.3 min
445
454
12:00
No observations
—
—
—
13:00
No observations
—
—
—
14:00
No observations
—
—
—
15:00
No observations
—
—
—
16:00
75.8%
19.0 min
500
509
17:00
No observations
—
—
—
18:00
No observations
—
—
—
19:00
69.6%
40.8 min
497
509
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
26.113.00.0
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
3761880
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.5%
26.0 min
373
376
Tuesday
Fewer than 200 measured departures
—
194
196
Wednesday
81.8%
8.1 min
363
372
Thursday
79.3%
12.3 min
363
368
Friday
79.5%
22.3 min
365
376
Saturday
Fewer than 200 measured departures
—
192
196
Sunday
78.9%
26.1 min
364
376
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
35.417.70.0
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
2161080
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
79.1%
9.8 min
201
214
Feb
Fewer than 200 measured departures
—
188
192
Mar
82.4%
11.5 min
204
212
Apr
77.9%
35.4 min
204
206
May
82.6%
13.3 min
207
212
Jun
72.7%
25.1 min
205
206
Jul
76.0%
19.0 min
208
214
Aug
Fewer than 200 measured departures
—
104
106
Sep
Fewer than 200 measured departures
—
102
102
Oct
Fewer than 200 measured departures
—
176
176
Nov
88.6%
17.5 min
201
204
Dec
82.7%
21.9 min
214
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 time78.5%1,774
Delayed >15 min19.5%440
Cancelled2.0%46
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.