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 delay08:00–09:00-3.0min · 219 recorded · 219 measured
Gap to highest-delay hour11.7min08:00 ↔ 20:00
Recorded flights4,396MIA–TLH
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
8.72.9-3.0
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
6443220
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
—
18
18
06:00
93.1%
4.2 min
638
644
07:00
95.5%
-2.9 min
376
379
08:00
95.4%
-3.0 min
219
219
09:00
89.2%
4.8 min
529
534
10:00
Fewer than 200 measured departures
—
105
105
11:00
Fewer than 200 measured departures
—
73
75
12:00
Fewer than 200 measured departures
—
18
18
13:00
Fewer than 200 measured departures
—
123
125
14:00
Fewer than 200 measured departures
—
93
93
15:00
Fewer than 200 measured departures
—
165
167
16:00
Fewer than 200 measured departures
—
83
83
17:00
Fewer than 200 measured departures
—
65
65
18:00
86.0%
3.2 min
623
630
19:00
Fewer than 200 measured departures
—
1
1
20:00
80.0%
8.7 min
594
603
21:00
Fewer than 200 measured departures
—
2
2
22:00
82.6%
7.9 min
619
625
23:00
Fewer than 200 measured departures
—
10
10
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
9.14.50.0
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
6423210
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
86.2%
4.9 min
630
634
Tuesday
92.2%
0.2 min
604
612
Wednesday
88.7%
1.3 min
599
609
Thursday
89.2%
6.4 min
618
627
Friday
87.5%
2.9 min
634
638
Saturday
85.5%
7.0 min
634
634
Sunday
81.6%
9.1 min
635
642
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
10.65.30.0
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
4492250
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
87.3%
2.8 min
403
425
Feb
87.7%
4.2 min
382
384
Mar
84.8%
8.8 min
414
418
Apr
91.2%
0.2 min
352
354
May
88.7%
1.2 min
371
374
Jun
85.5%
3.8 min
366
368
Jul
81.2%
10.6 min
430
430
Aug
84.6%
5.1 min
234
234
Sep
Fewer than 200 measured departures
—
184
184
Oct
92.0%
1.1 min
374
374
Nov
89.0%
6.4 min
445
449
Dec
85.5%
5.6 min
399
402
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 time86.4%3,797
Delayed >15 min12.7%557
Cancelled1.0%42
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.