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 delay19:00–20:00-4.4min · 239 recorded · 238 measured
Gap to highest-delay hour13.7min19:00 ↔ 18:00
Recorded flights2,268CDC–SLC
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
9.32.4-4.4
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
5812910
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
No observations
—
—
—
07:00
91.6%
-1.7 min
490
492
08:00
No observations
—
—
—
09:00
94.8%
-3.7 min
579
581
10:00
No observations
—
—
—
11:00
Fewer than 200 measured departures
—
155
155
12:00
No observations
—
—
—
13:00
Fewer than 200 measured departures
—
86
86
14:00
No observations
—
—
—
15:00
Fewer than 200 measured departures
—
20
20
16:00
No observations
—
—
—
17:00
93.4%
0.1 min
466
467
18:00
93.9%
9.3 min
228
228
19:00
94.5%
-4.4 min
238
239
20:00
No observations
—
—
—
21:00
No observations
—
—
—
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
3.7-0.8-5.4
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
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
93.6%
-2.7 min
374
376
Tuesday
95.6%
-5.1 min
206
206
Wednesday
96.1%
-4.7 min
254
256
Thursday
92.4%
1.2 min
366
368
Friday
92.3%
3.7 min
374
374
Saturday
95.5%
-5.4 min
314
314
Sunday
93.1%
-0.2 min
374
374
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
7.01.3-4.5
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
2161080
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
93.9%
-2.9 min
214
214
Feb
Fewer than 200 measured departures
—
192
192
Mar
89.7%
7.0 min
214
214
Apr
94.5%
-4.5 min
200
200
May
94.9%
4.4 min
216
216
Jun
97.1%
-3.8 min
206
206
Jul
92.6%
-3.4 min
216
216
Aug
Fewer than 200 measured departures
—
104
104
Sep
Fewer than 200 measured departures
—
106
106
Oct
Fewer than 200 measured departures
—
176
176
Nov
93.1%
-3.1 min
202
208
Dec
90.3%
0.6 min
216
216
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 time93.6%2,122
Delayed >15 min6.2%140
Cancelled0.3%6
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.