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 delay18:00–19:00-3.5min · 311 recorded · 310 measured
Gap to highest-delay hour7.3min18:00 ↔ 20:00
Recorded flights2,635OMA–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
3.80.2-3.5
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
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
No observations
—
—
—
07:00
No observations
—
—
—
08:00
94.2%
-0.5 min
655
658
09:00
Fewer than 200 measured departures
—
44
44
10:00
No observations
—
—
—
11:00
No observations
—
—
—
12:00
Fewer than 200 measured departures
—
35
35
13:00
93.4%
-1.1 min
488
488
14:00
Fewer than 200 measured departures
—
181
182
15:00
Fewer than 200 measured departures
—
28
28
16:00
No observations
—
—
—
17:00
89.5%
0.9 min
294
294
18:00
94.2%
-3.5 min
310
311
19:00
No observations
—
—
—
20:00
87.6%
3.8 min
579
582
21:00
Fewer than 200 measured departures
—
13
13
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
2.00.2-1.7
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
3881940
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
93.0%
-1.4 min
387
388
Tuesday
92.7%
0.6 min
381
382
Wednesday
91.7%
0.4 min
374
379
Thursday
90.7%
-0.5 min
378
378
Friday
92.8%
-1.7 min
386
386
Saturday
91.9%
2.0 min
344
344
Sunday
89.1%
1.5 min
377
378
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
3.50.3-2.9
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
3021510
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
90.4%
1.8 min
230
230
Feb
87.7%
2.7 min
212
212
Mar
92.6%
-2.1 min
230
238
Apr
90.7%
1.9 min
236
236
May
92.7%
-2.2 min
247
247
Jun
92.6%
-0.9 min
258
258
Jul
91.1%
0.8 min
302
302
Aug
Fewer than 200 measured departures
—
124
124
Sep
Fewer than 200 measured departures
—
120
120
Oct
94.5%
-2.3 min
200
200
Nov
94.4%
-2.9 min
232
232
Dec
88.1%
3.5 min
236
236
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 time91.4%2,409
Delayed >15 min8.3%218
Cancelled0.3%8
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.