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 delay07:00–08:004.0min · 357 recorded · 351 measured
Gap to highest-delay hour37.2min07:00 ↔ 19:00
Recorded flights3,050JFK–SAV
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
41.220.60.0
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
3571790
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
—
1
1
06:00
Fewer than 200 measured departures
—
175
185
07:00
91.7%
4.0 min
351
357
08:00
Fewer than 200 measured departures
—
174
176
09:00
80.8%
6.5 min
245
247
10:00
Fewer than 200 measured departures
—
171
175
11:00
Fewer than 200 measured departures
—
198
203
12:00
Fewer than 200 measured departures
—
139
140
13:00
80.7%
10.5 min
300
303
14:00
Fewer than 200 measured departures
—
68
69
15:00
Fewer than 200 measured departures
—
118
127
16:00
Fewer than 200 measured departures
—
162
172
17:00
78.2%
15.1 min
316
326
18:00
Fewer than 200 measured departures
—
181
187
19:00
56.1%
41.2 min
264
288
20:00
Fewer than 200 measured departures
—
88
94
21:00
No observations
—
—
—
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
17.68.80.0
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
4782390
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
76.6%
15.2 min
444
465
Tuesday
80.3%
10.7 min
366
378
Wednesday
79.5%
12.7 min
366
373
Thursday
74.9%
15.8 min
427
440
Friday
78.0%
13.1 min
441
449
Saturday
78.5%
12.0 min
466
478
Sunday
76.4%
17.6 min
441
467
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
21.610.80.0
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
4202100
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
79.3%
10.7 min
213
234
Feb
74.0%
16.6 min
223
232
Mar
74.6%
21.6 min
260
264
Apr
81.1%
7.5 min
318
319
May
75.8%
12.7 min
223
224
Jun
74.2%
18.8 min
209
218
Jul
Fewer than 200 measured departures
—
191
230
Aug
Fewer than 200 measured departures
—
108
108
Sep
Fewer than 200 measured departures
—
94
94
Oct
86.8%
7.0 min
287
288
Nov
84.5%
7.6 min
414
420
Dec
73.2%
18.1 min
411
419
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 time75.1%2,292
Delayed >15 min21.6%659
Cancelled3.2%99
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.