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 delay07:00–08:002.7min · 686 recorded · 683 measured
Gap to highest-delay hour17.9min07:00 ↔ 16:00
Recorded flights6,789MIA–PHX
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
20.610.30.0
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
6893450
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
—
92
94
01:00
Fewer than 200 measured departures
—
15
15
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
Fewer than 200 measured departures
—
1
1
06:00
No observations
—
—
—
07:00
92.7%
2.7 min
683
686
08:00
86.8%
6.0 min
304
304
09:00
89.3%
4.9 min
485
487
10:00
79.3%
14.7 min
212
212
11:00
75.2%
13.2 min
230
232
12:00
80.9%
10.6 min
345
345
13:00
77.1%
17.0 min
686
689
14:00
81.7%
10.1 min
295
296
15:00
Fewer than 200 measured departures
—
178
179
16:00
72.4%
20.6 min
427
428
17:00
72.4%
17.0 min
631
634
18:00
Fewer than 200 measured departures
—
1
1
19:00
71.1%
18.0 min
422
427
20:00
72.8%
15.6 min
206
206
21:00
76.7%
19.7 min
391
395
22:00
82.7%
11.2 min
525
530
23:00
84.9%
8.7 min
623
628
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
17.38.70.0
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
9904950
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.5%
13.6 min
973
986
Tuesday
83.5%
9.0 min
947
959
Wednesday
84.4%
8.7 min
941
942
Thursday
81.9%
9.9 min
972
973
Friday
79.1%
13.3 min
977
978
Saturday
81.0%
12.5 min
960
961
Sunday
75.7%
17.3 min
982
990
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
21.610.80.0
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
7433720
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
81.5%
12.6 min
626
639
Feb
85.8%
8.8 min
612
614
Mar
81.1%
11.9 min
735
743
Apr
82.0%
11.8 min
707
709
May
85.0%
9.2 min
665
665
Jun
78.2%
14.5 min
600
600
Jul
71.0%
21.6 min
610
616
Aug
75.8%
13.0 min
256
257
Sep
Fewer than 200 measured departures
—
199
199
Oct
83.7%
7.4 min
496
496
Nov
81.3%
11.5 min
593
598
Dec
79.5%
12.3 min
653
653
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 time80.2%5,448
Delayed >15 min19.2%1,304
Cancelled0.5%37
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.