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 delay06:00–07:00-5.3min · 652 recorded · 641 measured
Gap to highest-delay hour9.9min06:00 ↔ 19:00
Recorded flights2,616JNU–SIT
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
4.6-0.3-5.3
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
6563280
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
No observations
—
—
—
06:00
95.0%
-5.3 min
641
652
07:00
No observations
—
—
—
08:00
No observations
—
—
—
09:00
87.0%
1.3 min
645
656
10:00
No observations
—
—
—
11:00
No observations
—
—
—
12:00
Fewer than 200 measured departures
—
1
1
13:00
Fewer than 200 measured departures
—
1
1
14:00
No observations
—
—
—
15:00
No observations
—
—
—
16:00
No observations
—
—
—
17:00
No observations
—
—
—
18:00
No observations
—
—
—
19:00
78.9%
4.6 min
634
654
20:00
No observations
—
—
—
21:00
Fewer than 200 measured departures
—
28
28
22:00
85.9%
-3.5 min
610
624
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
2.1-0.7-3.5
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
3761880
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
84.7%
1.5 min
373
376
Tuesday
86.2%
2.1 min
369
376
Wednesday
85.8%
1.1 min
360
368
Thursday
86.6%
-1.8 min
357
368
Friday
88.8%
-3.5 min
367
376
Saturday
88.3%
-2.6 min
367
376
Sunday
87.5%
-2.5 min
367
376
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
9.52.0-5.6
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
2481240
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
76.5%
9.5 min
234
244
Feb
87.2%
-2.1 min
219
224
Mar
84.8%
5.3 min
243
248
Apr
89.1%
-3.1 min
239
240
May
88.2%
-4.1 min
246
248
Jun
89.4%
-3.5 min
235
240
Jul
91.5%
-4.6 min
246
248
Aug
Fewer than 200 measured departures
—
122
124
Sep
Fewer than 200 measured departures
—
119
120
Oct
Fewer than 200 measured departures
—
193
204
Nov
89.7%
-5.6 min
232
236
Dec
80.2%
7.2 min
232
240
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 time85.0%2,223
Delayed >15 min12.9%337
Cancelled2.1%56
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.