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 delay18:00–19:00-1.8min · 577 recorded · 575 measured
Gap to highest-delay hour20.4min18:00 ↔ 22:00
Recorded flights3,836MSO–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
18.68.4-1.8
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
6533270
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
92.2%
10.3 min
652
653
06:00
No observations
—
—
—
07:00
No observations
—
—
—
08:00
No observations
—
—
—
09:00
Fewer than 200 measured departures
—
181
181
10:00
91.3%
0.8 min
436
444
11:00
Fewer than 200 measured departures
—
140
141
12:00
Fewer than 200 measured departures
—
121
121
13:00
92.3%
-0.0 min
401
409
14:00
Fewer than 200 measured departures
—
5
5
15:00
91.6%
0.7 min
320
321
16:00
92.3%
-1.4 min
298
298
17:00
Fewer than 200 measured departures
—
36
36
18:00
91.7%
-1.8 min
575
577
19:00
No observations
—
—
—
20:00
No observations
—
—
—
21:00
Fewer than 200 measured departures
—
150
151
22:00
80.0%
18.6 min
479
479
23:00
Fewer than 200 measured departures
—
20
20
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
5.22.60.0
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
5642820
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
92.0%
2.6 min
563
564
Tuesday
92.0%
2.9 min
553
553
Wednesday
89.0%
4.8 min
544
550
Thursday
91.0%
5.0 min
545
548
Friday
89.5%
5.2 min
550
554
Saturday
89.9%
4.2 min
513
518
Sunday
89.2%
2.5 min
546
549
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
9.13.7-1.7
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
3721860
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
90.3%
5.3 min
349
350
Feb
89.1%
8.0 min
312
312
Mar
88.1%
3.3 min
362
366
Apr
90.3%
2.3 min
360
360
May
92.5%
-1.7 min
372
372
Jun
90.8%
7.3 min
360
360
Jul
88.3%
2.1 min
368
368
Aug
Fewer than 200 measured departures
—
186
186
Sep
Fewer than 200 measured departures
—
148
148
Oct
93.7%
0.2 min
302
302
Nov
94.4%
-1.0 min
340
352
Dec
87.0%
9.1 min
355
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 time89.9%3,447
Delayed >15 min9.6%367
Cancelled0.6%22
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.