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 delay08:00–09:00-4.9min · 251 recorded · 251 measured
Gap to highest-delay hour6.8min08:00 ↔ 12:00
Recorded flights4,614FAT–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
1.9-1.5-4.9
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
No observations
—
—
—
06:00
95.9%
-0.3 min
655
657
07:00
Fewer than 200 measured departures
—
120
124
08:00
96.4%
-4.9 min
251
251
09:00
94.9%
-1.8 min
370
374
10:00
94.3%
0.9 min
420
420
11:00
92.9%
1.2 min
238
238
12:00
89.1%
1.9 min
658
658
13:00
No observations
—
—
—
14:00
No observations
—
—
—
15:00
94.3%
-1.2 min
530
531
16:00
Fewer than 200 measured departures
—
75
75
17:00
91.3%
1.0 min
617
618
18:00
Fewer than 200 measured departures
—
32
32
19:00
No observations
—
—
—
20:00
92.2%
1.7 min
601
603
21:00
Fewer than 200 measured departures
—
33
33
22:00
No observations
—
—
—
23:00
No observations
—
—
—
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
3.71.2-1.2
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
6863430
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
92.1%
0.8 min
684
686
Tuesday
94.4%
-1.2 min
664
664
Wednesday
94.2%
-0.3 min
660
662
Thursday
92.5%
-0.8 min
676
678
Friday
93.0%
3.7 min
681
682
Saturday
92.3%
-0.4 min
568
572
Sunday
93.0%
0.5 min
667
670
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
7.61.2-5.2
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
4862430
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
90.7%
1.2 min
378
382
Feb
92.1%
1.8 min
352
352
Mar
92.6%
-0.2 min
418
418
Apr
94.4%
-0.6 min
412
412
May
94.4%
-0.7 min
462
462
Jun
94.7%
-1.0 min
470
470
Jul
92.0%
-0.1 min
486
486
Aug
97.5%
-5.2 min
240
240
Sep
94.6%
-0.2 min
220
220
Oct
94.4%
-2.8 min
358
358
Nov
92.2%
2.3 min
386
396
Dec
89.5%
7.6 min
418
418
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 time92.8%4,281
Delayed >15 min6.9%319
Cancelled0.3%14
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.