493 km · Domestic

Detroit Metropolitan Wayne County (DTW) – Louisville Muhammad Ali (SDF)

In July 2026, 123 flights operated between Detroit Metropolitan Wayne County and Louisville Muhammad Ali (both directions), and 86.2% left on time, according to the US BTS.

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January168154▼ 8.3%
February156152▼ 2.6%
March176210▲ 19.3%
April206230▲ 11.7%
May2362360.0%
June236142▼ 39.8%
July247123▼ 50.2%
August246––
September146––
October210–in progress
November210––
December173––
Year to date (Jan–Jul)1,4251,247▼ 12.5%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January86.9%72.7%▼ 16.3%
February91.0%75.7%▼ 16.8%
March92.0%68.6%▼ 25.4%
April89.8%83.0%▼ 7.6%
May83.5%83.9%▲ 0.5%
June80.5%76.8%▼ 4.6%
July73.7%86.2%▲ 17.0%
August87.4%––
September95.2%––
October92.9%–in progress
November85.7%––
December63.0%––
Year-to-date average (Jan–Jul)85.3%78.1%▼ 8.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January880.0%
February00–
March06–
April02–
May00–
June20▼ 100.0%
July110.0%
August0––
September0––
October0–in progress
November4––
December3––
Year to date (Jan–Jul)1117▲ 54.5%

Airlines on this route

  1. SkyWest Airlines 51.7%
  2. Republic Airways 46.5%
  3. Spirit Airlines 1.1%
  4. Delta Air Lines 0.6%
  5. Endeavor Air 0.0%

Oct 1, 2024 – Jul 31, 2026

By direction

DTW → SDF

Scheduled flights
2,132
Flights operated
2,112
Cancelled
20 · 0.9%
On-time departures
82.7%

SDF → DTW

Scheduled flights
2,132
Flights operated
2,117
Cancelled
15 · 0.7%
On-time departures
85.1%

DTW → SDF and SDF → DTW counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 2,206 51.7% 78.8% 26
Republic Airways YX 1,982 46.5% 89.9% 9
Spirit Airlines NK 48 1.1% 83.3% 0
Delta Air Lines DL 26 0.6% 53.8% 0
Endeavor Air 9E 2 0.0% 100.0% 0

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 delay07:00–08:000.4min · 654 recorded · 651 measured
Gap to highest-delay hour21.9min07:00 ↔ 18:00
Recorded flights4,264DTW–SDF

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:00Fewer than 200 measured departures—11
07:0092.6%0.4 min651654
08:0086.0%8.6 min529534
09:00Fewer than 200 measured departures—22
10:0085.9%8.1 min654660
11:00Fewer than 200 measured departures—2020
12:0081.7%6.3 min235237
13:0087.2%6.3 min219221
14:0083.6%6.8 min226228
15:0075.2%15.0 min246249
16:0081.5%13.4 min232234
17:00Fewer than 200 measured departures—171173
18:0081.5%22.3 min297300
19:0077.5%18.5 min484488
20:00Fewer than 200 measured departures—141141
21:00Fewer than 200 measured departures—121122
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday81.4%14.3 min646650
Tuesday86.8%11.8 min613616
Wednesday86.8%7.2 min604610
Thursday80.3%11.5 min618618
Friday79.7%11.6 min627632
Saturday89.3%2.0 min513518
Sunday84.2%11.8 min608620

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 departures Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan80.1%16.1 min322338
Feb83.4%19.3 min308308
Mar79.3%11.5 min386392
Apr86.2%7.4 min436438
May83.7%10.2 min472472
Jun79.1%12.5 min378380
Jul77.8%13.0 min370372
Aug87.4%2.0 min246246
SepFewer than 200 measured departures—146146
Oct93.8%0.1 min352352
Nov89.5%5.7 min428432
Dec78.4%19.9 min385388

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 time 83.2% 3,548
  • Delayed >15 min 16.0% 681
  • Cancelled 0.8% 35
  • Missing departure time 0.0% 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 on this route

35
35 of 35
Flight numbersBy direction DeparturesOn time
YX5824 SDF → DTW 572 91.6%
YX5832 DTW → SDF 554 82.2%
OO3993 DTW → SDF 291 85.1%
OO3957 DTW → SDF 263 70.1%
OO3993 SDF → DTW 224 84.8%
OO3821 SDF → DTW 200 88.3%
OO3821 DTW → SDF 165 84.1%
OO3957 SDF → DTW 162 65.2%
OO3575 SDF → DTW 140 78.3%
OO3575 DTW → SDF 140 76.8%
OO4122 SDF → DTW 101 78.2%
YX5787 DTW → SDF 62 91.8%
YX5793 DTW → SDF 62 87.1%
YX5839 SDF → DTW 62 90.3%
YX5793 SDF → DTW 50 88.0%
OO4120 DTW → SDF 45 75.6%
OO3651 DTW → SDF 38 92.1%
OO3651 SDF → DTW 38 81.6%
YX5593 SDF → DTW 38 94.7%
YX5611 SDF → DTW 38 97.4%
YX5618 DTW → SDF 38 97.4%
YX5778 DTW → SDF 38 92.1%
YX5603 SDF → DTW 36 97.2%
YX5603 DTW → SDF 36 100.0%
YX5662 DTW → SDF 36 97.2%
YX5842 DTW → SDF 36 94.4%
YX5863 SDF → DTW 36 100.0%
YX5662 SDF → DTW 35 94.3%
OO3661 SDF → DTW 32 62.5%
OO3931 SDF → DTW 31 66.7%
OO3931 DTW → SDF 31 80.0%
OO3664 SDF → DTW 30 79.3%
OO3664 DTW → SDF 30 75.9%
YX5670 SDF → DTW 30 96.7%
YX5833 DTW → SDF 30 93.3%

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.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 123 −50.2% 1 86.2%
June 2026 142 −39.8% 0 76.8%
May 2026 236 +0.0% 0 83.9%
April 2026 230 +11.7% 2 83.0%
March 2026 210 +19.3% 6 68.6%
February 2026 152 −2.6% 0 75.7%
January 2026 154 −8.3% 8 72.7%
December 2025 173 −18.4% 3 63.0%
November 2025 210 −3.7% 4 85.7%
October 2025 210 +47.9% 0 92.9%
September 2025 146 0 95.2%
August 2025 246 0 87.4%
July 2025 247 1 73.7%
June 2025 236 2 80.5%
May 2025 236 0 83.5%
April 2025 206 0 89.8%
March 2025 176 0 92.0%
February 2025 156 0 91.0%
January 2025 168 8 86.9%
December 2024 212 0 91.0%
November 2024 218 0 93.1%
October 2024 142 0 95.1%

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