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 delay07:00–08:003.5min · 1,677 recorded · 1,646 measured
Gap to highest-delay hour26.7min07:00 ↔ 15:00
Recorded flights7,527AUS–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
30.215.10.0
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
1,6778390
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
—
46
49
06:00
91.9%
10.4 min
368
382
07:00
92.5%
3.5 min
1,646
1,677
08:00
Fewer than 200 measured departures
—
70
70
09:00
Fewer than 200 measured departures
—
18
18
10:00
Fewer than 200 measured departures
—
111
111
11:00
85.5%
10.0 min
1,322
1,354
12:00
77.3%
18.1 min
463
471
13:00
89.4%
4.5 min
377
381
14:00
77.4%
18.6 min
447
457
15:00
62.7%
30.2 min
488
494
16:00
Fewer than 200 measured departures
—
145
150
17:00
76.7%
22.6 min
533
551
18:00
77.9%
16.2 min
756
771
19:00
74.0%
18.8 min
400
409
20:00
Fewer than 200 measured departures
—
97
101
21:00
Fewer than 200 measured departures
—
77
80
22:00
Fewer than 200 measured departures
—
1
1
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
17.28.60.0
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
1,1315660
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
80.6%
17.1 min
1,086
1,131
Tuesday
84.3%
13.3 min
1,094
1,122
Wednesday
84.7%
11.4 min
1,100
1,113
Thursday
81.6%
17.2 min
1,095
1,104
Friday
81.2%
12.1 min
1,105
1,123
Saturday
84.5%
11.0 min
843
860
Sunday
79.3%
17.0 min
1,042
1,074
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
27.113.50.0
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
7743870
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
88.0%
9.8 min
614
644
Feb
83.9%
11.3 min
554
580
Mar
81.6%
11.2 min
618
632
Apr
86.1%
7.7 min
677
679
May
81.5%
16.3 min
766
774
Jun
75.8%
20.7 min
743
754
Jul
75.7%
27.1 min
733
774
Aug
79.0%
18.5 min
348
352
Sep
88.5%
7.8 min
348
348
Oct
84.9%
11.0 min
623
630
Nov
87.1%
6.0 min
665
671
Dec
78.9%
18.9 min
676
689
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 time80.5%6,058
Delayed >15 min17.4%1,307
Cancelled2.2%162
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.