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 delay07:00–08:002.3min · 512 recorded · 507 measured
Gap to highest-delay hour16.3min07:00 ↔ 16:00
Recorded flights5,467MCO–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
18.59.30.0
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
1,0575290
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
Fewer than 200 measured departures
—
11
11
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
—
186
187
07:00
92.1%
2.3 min
507
512
08:00
Fewer than 200 measured departures
—
23
23
09:00
90.3%
2.8 min
690
692
10:00
83.5%
6.5 min
200
201
11:00
86.3%
9.0 min
1,053
1,057
12:00
Fewer than 200 measured departures
—
74
74
13:00
Fewer than 200 measured departures
—
141
141
14:00
Fewer than 200 measured departures
—
37
38
15:00
Fewer than 200 measured departures
—
37
37
16:00
72.4%
18.5 min
428
429
17:00
77.6%
13.8 min
902
904
18:00
Fewer than 200 measured departures
—
103
104
19:00
74.7%
17.1 min
482
482
20:00
No observations
—
—
—
21:00
Fewer than 200 measured departures
—
18
18
22:00
Fewer than 200 measured departures
—
1
1
23:00
85.1%
5.4 min
552
556
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
16.68.30.0
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
8534270
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
84.7%
9.9 min
783
789
Tuesday
87.1%
4.7 min
728
732
Wednesday
87.5%
5.6 min
738
738
Thursday
87.2%
6.1 min
771
771
Friday
81.8%
9.2 min
781
784
Saturday
78.8%
10.5 min
848
853
Sunday
78.8%
16.6 min
796
800
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
15.37.60.0
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
5442720
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
80.8%
11.1 min
504
508
Feb
85.4%
8.6 min
458
458
Mar
81.8%
11.1 min
506
514
Apr
88.8%
2.3 min
544
544
May
81.4%
7.9 min
501
503
Jun
79.3%
13.9 min
492
492
Jul
76.5%
15.3 min
523
528
Aug
80.9%
8.1 min
235
236
Sep
89.0%
3.8 min
254
254
Oct
88.4%
6.4 min
422
422
Nov
91.1%
2.9 min
470
470
Dec
81.9%
13.5 min
536
538
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 time83.2%4,549
Delayed >15 min16.4%896
Cancelled0.4%22
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.