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 delay05:00–06:00-0.6min · 651 recorded · 638 measured
Gap to highest-delay hour26.8min05:00 ↔ 20:00
Recorded flights1,316BOS–PQI
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
26.212.8-0.6
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
6583290
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
95.0%
-0.6 min
638
651
06:00
Fewer than 200 measured departures
—
7
7
07:00
No observations
—
—
—
08:00
No observations
—
—
—
09:00
No observations
—
—
—
10:00
No observations
—
—
—
11:00
No observations
—
—
—
12:00
No observations
—
—
—
13:00
No observations
—
—
—
14:00
No observations
—
—
—
15:00
No observations
—
—
—
16:00
No observations
—
—
—
17:00
No observations
—
—
—
18:00
No observations
—
—
—
19:00
No observations
—
—
—
20:00
60.7%
26.2 min
646
658
21:00
No observations
—
—
—
22:00
No observations
—
—
—
23:00
No observations
—
—
—
Day of week
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
188940
MonTueWedThuFriSatSun
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
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
Fewer than 200 measured departures
—
182
188
Tuesday
Fewer than 200 measured departures
—
183
188
Wednesday
Fewer than 200 measured departures
—
186
188
Thursday
Fewer than 200 measured departures
—
186
188
Friday
Fewer than 200 measured departures
—
187
188
Saturday
Fewer than 200 measured departures
—
185
188
Sunday
Fewer than 200 measured departures
—
182
188
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
124620
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
—
119
124
Feb
Fewer than 200 measured departures
—
104
112
Mar
Fewer than 200 measured departures
—
124
124
Apr
Fewer than 200 measured departures
—
120
120
May
Fewer than 200 measured departures
—
122
124
Jun
Fewer than 200 measured departures
—
118
120
Jul
Fewer than 200 measured departures
—
118
124
Aug
Fewer than 200 measured departures
—
62
62
Sep
Fewer than 200 measured departures
—
60
60
Oct
Fewer than 200 measured departures
—
102
102
Nov
Fewer than 200 measured departures
—
120
120
Dec
Fewer than 200 measured departures
—
122
124
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 time76.3%1,004
Delayed >15 min21.8%287
Cancelled1.9%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.