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 delay10:00–11:001.2min · 376 recorded · 368 measured
Gap to highest-delay hour25.5min10:00 ↔ 17:00
Recorded flights3,027CLE–JFK
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
26.713.40.0
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
4492250
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
—
2
2
06:00
Fewer than 200 measured departures
—
150
157
07:00
Fewer than 200 measured departures
—
175
177
08:00
Fewer than 200 measured departures
—
84
85
09:00
Fewer than 200 measured departures
—
125
125
10:00
90.5%
1.2 min
368
376
11:00
Fewer than 200 measured departures
—
152
152
12:00
89.6%
2.6 min
441
449
13:00
Fewer than 200 measured departures
—
139
144
14:00
82.0%
11.6 min
300
314
15:00
84.4%
7.3 min
340
346
16:00
Fewer than 200 measured departures
—
97
101
17:00
71.4%
26.7 min
248
277
18:00
Fewer than 200 measured departures
—
86
88
19:00
Fewer than 200 measured departures
—
12
12
20:00
Fewer than 200 measured departures
—
7
7
21:00
Fewer than 200 measured departures
—
187
188
22:00
Fewer than 200 measured departures
—
20
27
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
9.14.50.0
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
5132570
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
85.9%
4.7 min
405
421
Tuesday
85.4%
8.3 min
398
417
Wednesday
87.8%
3.1 min
409
419
Thursday
86.7%
6.5 min
413
421
Friday
82.8%
9.0 min
408
416
Saturday
87.3%
7.8 min
494
513
Sunday
82.8%
9.1 min
406
420
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
25.712.4-0.9
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
3671840
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
—
198
204
Feb
Fewer than 200 measured departures
—
161
172
Mar
Fewer than 200 measured departures
—
199
199
Apr
90.7%
2.3 min
248
248
May
87.8%
4.0 min
278
278
Jun
77.3%
18.5 min
291
308
Jul
70.7%
25.7 min
273
318
Aug
Fewer than 200 measured departures
—
134
136
Sep
Fewer than 200 measured departures
—
118
120
Oct
94.2%
-0.9 min
325
327
Nov
94.0%
-0.8 min
364
367
Dec
77.3%
13.7 min
344
350
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 time82.9%2,510
Delayed >15 min14.0%423
Cancelled3.1%94
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.