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 delay05:00–06:00-4.0min · 273 recorded · 273 measured
Gap to highest-delay hour22.3min05:00 ↔ 17:00
Recorded flights2,285GEG–SMF
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
18.37.2-4.0
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
2991500
00:0003:0006:0009:0012:0015:0018:0021:00
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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
98.5%
-4.0 min
273
273
06:00
Fewer than 200 measured departures
—
161
161
07:00
Fewer than 200 measured departures
—
66
66
08:00
Fewer than 200 measured departures
—
37
37
09:00
Fewer than 200 measured departures
—
107
107
10:00
Fewer than 200 measured departures
—
126
126
11:00
87.0%
7.1 min
299
299
12:00
Fewer than 200 measured departures
—
110
110
13:00
Fewer than 200 measured departures
—
76
76
14:00
Fewer than 200 measured departures
—
103
103
15:00
Fewer than 200 measured departures
—
121
121
16:00
Fewer than 200 measured departures
—
29
29
17:00
62.4%
18.3 min
221
222
18:00
Fewer than 200 measured departures
—
126
126
19:00
Fewer than 200 measured departures
—
110
110
20:00
Fewer than 200 measured departures
—
167
167
21:00
Fewer than 200 measured departures
—
151
151
22:00
Fewer than 200 measured departures
—
1
1
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
13.06.50.0
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
3721860
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.9%
8.7 min
366
366
Tuesday
84.0%
7.8 min
300
300
Wednesday
83.9%
6.2 min
292
292
Thursday
79.5%
8.7 min
361
361
Friday
76.6%
13.0 min
371
372
Saturday
84.5%
5.6 min
226
226
Sunday
78.3%
10.0 min
368
368
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
13.16.50.0
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
2841420
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
—
160
160
Feb
Fewer than 200 measured departures
—
172
172
Mar
87.5%
5.3 min
208
208
Apr
82.5%
8.6 min
206
206
May
81.9%
7.0 min
210
210
Jun
73.8%
13.1 min
263
263
Jul
77.5%
12.6 min
284
284
Aug
Fewer than 200 measured departures
—
120
120
Sep
Fewer than 200 measured departures
—
111
112
Oct
Fewer than 200 measured departures
—
174
174
Nov
Fewer than 200 measured departures
—
192
192
Dec
Fewer than 200 measured departures
—
184
184
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 time80.2%1,832
Delayed >15 min19.8%452
Cancelled0.0%1
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.