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 delay11:00–12:003.3min · 228 recorded · 227 measured
Gap to highest-delay hour25.1min11:00 ↔ 17:00
Recorded flights1,862BGR–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
28.414.20.0
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
2611310
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
—
1
1
06:00
Fewer than 200 measured departures
—
145
145
07:00
Fewer than 200 measured departures
—
49
50
08:00
82.4%
10.1 min
227
228
09:00
Fewer than 200 measured departures
—
106
106
10:00
Fewer than 200 measured departures
—
8
8
11:00
88.1%
3.3 min
227
228
12:00
81.0%
14.9 min
231
234
13:00
Fewer than 200 measured departures
—
167
168
14:00
Fewer than 200 measured departures
—
3
3
15:00
No observations
—
—
—
16:00
80.4%
18.3 min
225
230
17:00
73.4%
28.4 min
256
261
18:00
Fewer than 200 measured departures
—
114
118
19:00
Fewer than 200 measured departures
—
78
82
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
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
30.615.30.0
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
2951480
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
75.3%
26.9 min
243
252
Tuesday
88.4%
5.5 min
216
217
Wednesday
84.0%
12.5 min
244
247
Thursday
82.7%
11.5 min
289
295
Friday
75.0%
21.5 min
288
292
Saturday
81.4%
14.6 min
279
281
Sunday
76.6%
30.6 min
278
278
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
32.616.30.0
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
4922460
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
No observations
—
—
—
Feb
No observations
—
—
—
Mar
No observations
—
—
—
Apr
Fewer than 200 measured departures
—
83
87
May
79.6%
11.2 min
211
211
Jun
79.2%
12.1 min
375
384
Jul
77.0%
32.6 min
483
492
Aug
80.9%
17.4 min
215
218
Sep
87.1%
17.2 min
217
217
Oct
83.1%
4.8 min
249
249
Nov
Fewer than 200 measured departures
—
4
4
Dec
No observations
—
—
—
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 time79.2%1,474
Delayed >15 min19.5%363
Cancelled1.3%25
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.