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 delay15:00–16:001.6min · 788 recorded · 788 measured
Gap to highest-delay hour14.4min15:00 ↔ 18:00
Recorded flights5,686LGB–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
15.98.00.0
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
8104050
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
Fewer than 200 measured departures
—
6
6
07:00
94.6%
2.4 min
660
663
08:00
Fewer than 200 measured departures
—
138
138
09:00
Fewer than 200 measured departures
—
104
104
10:00
81.1%
7.9 min
265
265
11:00
87.7%
4.9 min
804
810
12:00
85.4%
4.4 min
206
206
13:00
83.1%
10.7 min
747
753
14:00
Fewer than 200 measured departures
—
99
99
15:00
89.0%
1.6 min
788
788
16:00
87.5%
3.9 min
369
369
17:00
89.1%
3.1 min
496
496
18:00
65.1%
15.9 min
206
206
19:00
Fewer than 200 measured departures
—
106
107
20:00
86.8%
2.9 min
675
676
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
7.23.60.0
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
8644320
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
85.6%
4.7 min
862
864
Tuesday
89.7%
3.4 min
759
760
Wednesday
85.6%
7.2 min
744
748
Thursday
84.4%
6.4 min
850
850
Friday
85.9%
5.3 min
859
862
Saturday
88.1%
4.4 min
759
764
Sunday
84.5%
5.9 min
836
838
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
10.94.5-1.9
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
5702850
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
88.7%
3.8 min
522
522
Feb
85.2%
5.9 min
515
518
Mar
86.5%
2.9 min
570
570
Apr
84.1%
7.5 min
534
534
May
84.4%
6.9 min
546
548
Jun
86.9%
4.8 min
502
508
Jul
84.6%
6.9 min
514
518
Aug
91.7%
-1.9 min
254
254
Sep
94.8%
-1.2 min
248
248
Oct
85.3%
6.9 min
434
434
Nov
87.8%
3.9 min
510
510
Dec
81.5%
10.9 min
520
522
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 time85.9%4,886
Delayed >15 min13.8%783
Cancelled0.3%17
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.