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 delay08:00–09:000.1min · 324 recorded · 318 measured
Gap to highest-delay hour24.6min08:00 ↔ 18:00
Recorded flights4,901LGA–ORF
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
24.712.30.0
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
5172590
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
—
181
187
06:00
92.0%
1.4 min
498
517
07:00
91.8%
0.3 min
279
287
08:00
90.9%
0.1 min
318
324
09:00
86.9%
4.5 min
214
221
10:00
Fewer than 200 measured departures
—
169
169
11:00
90.4%
4.1 min
302
309
12:00
84.5%
5.5 min
342
352
13:00
83.6%
7.8 min
433
444
14:00
Fewer than 200 measured departures
—
107
117
15:00
82.6%
12.9 min
442
465
16:00
79.0%
11.3 min
200
221
17:00
75.7%
18.7 min
214
222
18:00
67.7%
24.7 min
257
296
19:00
Fewer than 200 measured departures
—
7
8
20:00
67.7%
19.5 min
350
393
21:00
70.3%
16.2 min
343
369
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
13.96.90.0
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
7813910
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
86.3%
7.5 min
735
781
Tuesday
83.0%
7.6 min
733
777
Wednesday
85.0%
8.3 min
720
758
Thursday
81.6%
9.0 min
735
772
Friday
79.1%
13.9 min
736
767
Saturday
86.5%
3.6 min
369
378
Sunday
80.6%
10.6 min
628
668
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
15.67.80.0
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
5652830
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
83.3%
7.8 min
288
315
Feb
88.4%
5.9 min
275
300
Mar
79.8%
9.2 min
272
294
Apr
85.7%
4.6 min
349
352
May
80.3%
11.2 min
477
489
Jun
81.1%
10.6 min
487
520
Jul
77.5%
15.6 min
448
510
Aug
89.1%
1.9 min
313
322
Sep
89.7%
4.1 min
291
294
Oct
87.8%
4.0 min
441
449
Nov
82.6%
10.7 min
540
565
Dec
76.6%
14.8 min
475
491
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 time78.8%3,861
Delayed >15 min16.2%795
Cancelled5.0%245
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.