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 delay06:00–07:002.5min · 360 recorded · 359 measured
Gap to highest-delay hour25.1min06:00 ↔ 20:00
Recorded flights1,820DAL–SJC
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
27.613.80.0
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
3601800
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
No observations
—
—
—
06:00
95.0%
2.5 min
359
360
07:00
Fewer than 200 measured departures
—
197
200
08:00
Fewer than 200 measured departures
—
191
192
09:00
Fewer than 200 measured departures
—
36
36
10:00
Fewer than 200 measured departures
—
18
19
11:00
Fewer than 200 measured departures
—
103
104
12:00
Fewer than 200 measured departures
—
28
28
13:00
Fewer than 200 measured departures
—
10
10
14:00
Fewer than 200 measured departures
—
1
1
15:00
Fewer than 200 measured departures
—
48
49
16:00
Fewer than 200 measured departures
—
61
62
17:00
62.5%
22.2 min
264
267
18:00
Fewer than 200 measured departures
—
100
102
19:00
Fewer than 200 measured departures
—
89
91
20:00
51.5%
27.6 min
204
208
21:00
Fewer than 200 measured departures
—
89
91
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
18.39.20.0
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
2861430
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
67.5%
18.3 min
283
284
Tuesday
77.5%
13.0 min
236
240
Wednesday
77.6%
11.5 min
237
238
Thursday
73.1%
15.4 min
279
284
Friday
76.8%
10.8 min
285
286
Saturday
74.9%
12.6 min
211
216
Sunday
69.3%
17.4 min
267
272
Month of year
Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
186930
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
134
140
Feb
Fewer than 200 measured departures
—
141
142
Mar
Fewer than 200 measured departures
—
160
160
Apr
Fewer than 200 measured departures
—
160
162
May
Fewer than 200 measured departures
—
163
168
Jun
Fewer than 200 measured departures
—
175
178
Jul
Fewer than 200 measured departures
—
184
186
Aug
Fewer than 200 measured departures
—
98
98
Sep
Fewer than 200 measured departures
—
94
94
Oct
Fewer than 200 measured departures
—
183
184
Nov
Fewer than 200 measured departures
—
155
156
Dec
Fewer than 200 measured departures
—
151
152
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 time72.7%1,324
Delayed >15 min26.0%474
Cancelled1.2%22
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.