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 delay07:00–08:004.1min · 1,108 recorded · 1,085 measured
Gap to highest-delay hour39.2min07:00 ↔ 18:00
Recorded flights7,209DFW–JFK
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
43.221.60.0
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
1,2876440
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
Fewer than 200 measured departures
—
20
21
06:00
Fewer than 200 measured departures
—
101
106
07:00
89.6%
4.1 min
1,085
1,108
08:00
85.0%
11.7 min
1,255
1,287
09:00
73.2%
17.5 min
388
398
10:00
Fewer than 200 measured departures
—
20
20
11:00
72.8%
17.7 min
346
357
12:00
76.3%
15.8 min
1,029
1,041
13:00
75.5%
18.7 min
237
242
14:00
76.4%
14.3 min
594
611
15:00
66.7%
25.3 min
345
354
16:00
61.5%
32.2 min
491
504
17:00
67.8%
32.5 min
844
876
18:00
65.7%
43.2 min
265
281
19:00
Fewer than 200 measured departures
—
1
1
20:00
No observations
—
—
—
21:00
No observations
—
—
—
22:00
No observations
—
—
—
23:00
Fewer than 200 measured departures
—
2
2
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
20.310.20.0
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
1,0565280
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
73.4%
20.3 min
1,005
1,035
Tuesday
80.4%
16.5 min
1,023
1,048
Wednesday
77.5%
16.8 min
1,020
1,030
Thursday
77.9%
20.2 min
1,020
1,049
Friday
79.5%
14.5 min
1,004
1,029
Saturday
75.8%
17.7 min
939
962
Sunday
73.4%
18.9 min
1,012
1,056
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
33.916.90.0
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
8084040
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
77.5%
17.1 min
516
549
Feb
84.6%
11.1 min
455
482
Mar
80.3%
11.3 min
527
533
Apr
79.9%
11.8 min
586
590
May
76.2%
16.7 min
760
769
Jun
68.1%
30.0 min
759
775
Jul
67.4%
33.9 min
761
808
Aug
79.6%
13.7 min
427
434
Sep
80.0%
13.8 min
364
371
Oct
83.4%
10.9 min
561
565
Nov
83.5%
8.0 min
644
655
Dec
71.8%
23.0 min
663
678
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 time74.9%5,398
Delayed >15 min22.5%1,625
Cancelled2.6%186
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.