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 delay08:00–09:001.4min · 396 recorded · 387 measured
Gap to highest-delay hour13.8min08:00 ↔ 17:00
Recorded flights3,100LGA–MKE
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
15.37.60.0
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
5032520
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
—
20
20
06:00
91.1%
4.8 min
394
407
07:00
Fewer than 200 measured departures
—
19
19
08:00
91.5%
1.4 min
387
396
09:00
Fewer than 200 measured departures
—
9
9
10:00
89.8%
3.4 min
491
503
11:00
Fewer than 200 measured departures
—
190
202
12:00
Fewer than 200 measured departures
—
5
5
13:00
Fewer than 200 measured departures
—
125
129
14:00
84.7%
8.5 min
365
380
15:00
Fewer than 200 measured departures
—
168
179
16:00
Fewer than 200 measured departures
—
49
51
17:00
75.8%
15.3 min
318
351
18:00
Fewer than 200 measured departures
—
187
189
19:00
Fewer than 200 measured departures
—
132
146
20:00
Fewer than 200 measured departures
—
92
109
21:00
Fewer than 200 measured departures
—
5
5
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
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
13.26.60.0
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
4862430
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
84.9%
8.2 min
451
486
Tuesday
85.5%
5.5 min
454
483
Wednesday
86.2%
5.2 min
457
476
Thursday
83.9%
12.4 min
454
473
Friday
80.3%
13.2 min
467
476
Saturday
86.6%
6.0 min
238
241
Sunday
86.7%
7.3 min
435
465
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
17.27.9-1.5
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
4022010
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
87.8%
6.1 min
222
237
Feb
86.3%
4.9 min
212
226
Mar
80.2%
13.2 min
298
326
Apr
81.8%
9.0 min
296
296
May
83.4%
12.8 min
271
275
Jun
83.9%
9.6 min
347
369
Jul
83.2%
12.9 min
351
402
Aug
Fewer than 200 measured departures
—
171
174
Sep
Fewer than 200 measured departures
—
90
91
Oct
90.6%
2.5 min
201
202
Nov
91.5%
-1.5 min
258
260
Dec
77.4%
17.2 min
239
242
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 time80.8%2,504
Delayed >15 min14.6%452
Cancelled4.6%144
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.