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 delay08:00–09:00-4.7min · 606 recorded · 606 measured
Gap to highest-delay hour21.7min08:00 ↔ 22:00
Recorded flights6,008GEG–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
17.16.2-4.7
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
8504250
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
91.6%
5.8 min
478
480
06:00
Fewer than 200 measured departures
—
177
178
07:00
Fewer than 200 measured departures
—
28
28
08:00
95.1%
-4.7 min
606
606
09:00
95.5%
-3.7 min
420
422
10:00
93.1%
-1.4 min
202
202
11:00
86.6%
3.2 min
651
653
12:00
Fewer than 200 measured departures
—
28
28
13:00
87.2%
5.4 min
631
633
14:00
Fewer than 200 measured departures
—
17
18
15:00
85.3%
6.1 min
618
621
16:00
87.6%
3.2 min
210
213
17:00
85.6%
4.5 min
849
850
18:00
Fewer than 200 measured departures
—
99
99
19:00
86.8%
3.1 min
319
319
20:00
Fewer than 200 measured departures
—
2
2
21:00
Fewer than 200 measured departures
—
147
148
22:00
82.0%
17.1 min
373
374
23:00
Fewer than 200 measured departures
—
134
134
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
5.93.00.0
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
8884440
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
87.0%
3.6 min
883
888
Tuesday
88.8%
2.6 min
875
878
Wednesday
91.0%
2.0 min
868
872
Thursday
91.2%
3.1 min
866
868
Friday
87.1%
5.6 min
879
880
Saturday
87.3%
3.6 min
745
748
Sunday
86.1%
5.9 min
873
874
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
12.75.9-0.9
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
5982990
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
89.0%
6.2 min
483
486
Feb
86.3%
5.4 min
424
424
Mar
90.7%
1.1 min
572
578
Apr
92.1%
-0.9 min
596
596
May
88.5%
3.4 min
598
598
Jun
86.2%
6.4 min
578
580
Jul
86.2%
3.8 min
594
594
Aug
86.4%
12.7 min
286
288
Sep
87.2%
8.2 min
274
274
Oct
90.5%
0.8 min
474
476
Nov
88.9%
2.3 min
524
526
Dec
86.9%
3.1 min
586
588
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 time88.1%5,293
Delayed >15 min11.6%696
Cancelled0.3%19
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.