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 delay08:00–09:004.7min · 214 recorded · 210 measured
Gap to highest-delay hour17.1min08:00 ↔ 13:00
Recorded flights1,814JFK–SRQ
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
21.810.90.0
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
2371190
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
—
72
74
07:00
Fewer than 200 measured departures
—
117
119
08:00
85.2%
4.7 min
210
214
09:00
Fewer than 200 measured departures
—
108
109
10:00
Fewer than 200 measured departures
—
128
130
11:00
Fewer than 200 measured departures
—
147
151
12:00
70.9%
17.7 min
230
237
13:00
74.3%
21.8 min
214
223
14:00
Fewer than 200 measured departures
—
122
126
15:00
Fewer than 200 measured departures
—
23
23
16:00
Fewer than 200 measured departures
—
44
47
17:00
Fewer than 200 measured departures
—
169
181
18:00
Fewer than 200 measured departures
—
112
117
19:00
Fewer than 200 measured departures
—
8
9
20:00
Fewer than 200 measured departures
—
29
29
21:00
Fewer than 200 measured departures
—
21
24
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
20.910.40.0
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
2731370
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
73.8%
15.5 min
237
255
Tuesday
81.5%
15.2 min
249
254
Wednesday
86.0%
4.4 min
243
244
Thursday
75.6%
16.8 min
262
265
Friday
79.5%
10.0 min
253
256
Saturday
72.9%
13.1 min
266
273
Sunday
73.9%
20.9 min
245
267
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
19.39.60.0
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
2321160
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
—
178
186
Feb
77.4%
19.3 min
208
225
Mar
74.3%
17.8 min
226
232
Apr
82.7%
5.2 min
225
229
May
Fewer than 200 measured departures
—
176
176
Jun
Fewer than 200 measured departures
—
132
132
Jul
Fewer than 200 measured departures
—
114
124
Aug
Fewer than 200 measured departures
—
62
62
Sep
Fewer than 200 measured departures
—
60
60
Oct
Fewer than 200 measured departures
—
94
102
Nov
Fewer than 200 measured departures
—
136
138
Dec
Fewer than 200 measured departures
—
144
148
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 time75.0%1,361
Delayed >15 min21.7%394
Cancelled3.3%59
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.