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 · Mar 6, 2025 → Jul 31, 2026
Lowest average delay06:00–07:0010.8min · 357 recorded · 351 measured
Gap to highest-delay hour5.7min06:00 ↔ 12:00
Recorded flights2,311LAN–ORD
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
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
16.58.20.0
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
3571790
00:0003:0006:0009:0012:0015:0018:0021:00
Hover, tap or focus a point to see its value, sample and source.
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
—
113
116
06:00
93.5%
10.8 min
351
357
07:00
Fewer than 200 measured departures
—
28
29
08:00
Fewer than 200 measured departures
—
88
89
09:00
Fewer than 200 measured departures
—
172
173
10:00
Fewer than 200 measured departures
—
95
97
11:00
Fewer than 200 measured departures
—
32
32
12:00
77.0%
16.5 min
204
206
13:00
Fewer than 200 measured departures
—
154
159
14:00
Fewer than 200 measured departures
—
87
88
15:00
Fewer than 200 measured departures
—
97
100
16:00
Fewer than 200 measured departures
—
194
198
17:00
Fewer than 200 measured departures
—
72
75
18:00
Fewer than 200 measured departures
—
13
13
19:00
Fewer than 200 measured departures
—
88
92
20:00
Fewer than 200 measured departures
—
180
188
21:00
Fewer than 200 measured departures
—
196
201
22:00
Fewer than 200 measured departures
—
94
98
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
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
19.910.00.0
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
3381690
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.8%
19.9 min
322
336
Tuesday
83.1%
7.8 min
325
328
Wednesday
80.4%
12.0 min
327
334
Thursday
78.8%
15.9 min
326
335
Friday
76.4%
13.5 min
330
338
Saturday
83.8%
7.4 min
303
308
Sunday
77.2%
12.0 min
325
332
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
27.313.70.0
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
3061530
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
—
120
120
Feb
Fewer than 200 measured departures
—
106
106
Mar
74.5%
27.3 min
204
213
Apr
80.3%
11.3 min
279
292
May
80.2%
8.3 min
298
306
Jun
82.4%
13.5 min
296
300
Jul
79.2%
14.6 min
303
306
Aug
Fewer than 200 measured departures
—
176
180
Sep
Fewer than 200 measured departures
—
122
122
Oct
Fewer than 200 measured departures
—
124
124
Nov
Fewer than 200 measured departures
—
112
118
Dec
Fewer than 200 measured departures
—
118
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 time78.1%1,804
Delayed >15 min19.6%454
Cancelled2.3%53
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.