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 delay16:00–17:002.9min · 535 recorded · 535 measured
Gap to highest-delay hour5.8min16:00 ↔ 23:00
Recorded flights4,188RNO–SLC
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
8.74.40.0
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
6583290
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
—
118
118
06:00
94.4%
3.7 min
539
540
07:00
Fewer than 200 measured departures
—
49
49
08:00
Fewer than 200 measured departures
—
86
86
09:00
Fewer than 200 measured departures
—
49
49
10:00
Fewer than 200 measured departures
—
86
86
11:00
87.0%
4.1 min
656
658
12:00
Fewer than 200 measured departures
—
62
63
13:00
87.0%
5.9 min
593
595
14:00
No observations
—
—
—
15:00
Fewer than 200 measured departures
—
109
109
16:00
89.0%
2.9 min
535
535
17:00
87.7%
5.1 min
644
644
18:00
No observations
—
—
—
19:00
No observations
—
—
—
20:00
Fewer than 200 measured departures
—
49
49
21:00
Fewer than 200 measured departures
—
91
91
22:00
83.8%
3.8 min
309
310
23:00
81.1%
8.7 min
206
206
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
8.14.00.0
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
6083040
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
88.8%
3.3 min
606
608
Tuesday
88.8%
5.5 min
598
600
Wednesday
91.0%
0.0 min
598
598
Thursday
85.8%
6.6 min
598
598
Friday
89.9%
1.9 min
603
604
Saturday
87.4%
3.0 min
571
572
Sunday
85.0%
8.1 min
607
608
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
14.34.8-4.7
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
4742370
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
85.6%
1.2 min
368
368
Feb
79.0%
14.3 min
334
336
Mar
85.7%
6.1 min
371
372
Apr
91.4%
4.4 min
360
360
May
91.1%
0.4 min
370
372
Jun
85.3%
4.8 min
402
402
Jul
88.2%
3.0 min
474
474
Aug
90.0%
6.2 min
230
230
Sep
95.8%
-4.7 min
214
214
Oct
93.1%
-0.4 min
348
348
Nov
93.5%
1.1 min
352
352
Dec
82.1%
10.6 min
358
360
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 time87.9%3,683
Delayed >15 min11.9%498
Cancelled0.2%7
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.