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 delay22:00–23:00-4.5min · 435 recorded · 432 measured
Gap to highest-delay hour12.7min22:00 ↔ 16:00
Recorded flights5,759OGG–SFO
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
8.21.9-4.5
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
7493750
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
No observations
—
—
—
06:00
No observations
—
—
—
07:00
90.6%
3.2 min
680
685
08:00
91.9%
1.4 min
333
333
09:00
90.7%
4.6 min
744
749
10:00
85.4%
6.2 min
522
523
11:00
84.9%
7.7 min
330
333
12:00
89.8%
7.6 min
362
366
13:00
90.7%
1.2 min
441
444
14:00
88.2%
3.2 min
544
545
15:00
Fewer than 200 measured departures
—
148
151
16:00
82.6%
8.2 min
597
598
17:00
Fewer than 200 measured departures
—
94
94
18:00
Fewer than 200 measured departures
—
149
149
19:00
Fewer than 200 measured departures
—
37
37
20:00
Fewer than 200 measured departures
—
1
1
21:00
Fewer than 200 measured departures
—
72
72
22:00
95.4%
-4.5 min
432
435
23:00
92.6%
0.5 min
243
244
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
6.23.10.0
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
9004500
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
88.9%
3.0 min
813
815
Tuesday
91.9%
0.9 min
781
785
Wednesday
90.6%
2.6 min
779
784
Thursday
89.7%
3.9 min
819
821
Friday
86.2%
6.2 min
826
828
Saturday
86.9%
6.0 min
888
900
Sunday
88.9%
3.4 min
823
826
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
7.42.9-1.6
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
6963480
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
90.6%
4.6 min
434
436
Feb
85.6%
5.4 min
360
360
Mar
88.0%
1.9 min
548
558
Apr
89.8%
3.8 min
550
552
May
90.5%
2.5 min
496
496
Jun
88.4%
3.5 min
612
614
Jul
86.2%
7.4 min
690
696
Aug
90.2%
1.4 min
287
290
Sep
94.6%
-1.6 min
240
240
Oct
88.9%
6.7 min
404
406
Nov
88.8%
2.6 min
499
500
Dec
90.0%
3.3 min
609
611
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 time88.5%5,098
Delayed >15 min11.0%631
Cancelled0.5%30
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.