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1,292 km · Domestic

William P. Hobby (HOU) – Louisville Muhammad Ali (SDF)

In July 2026, 62 flights operated between William P. Hobby and Louisville Muhammad Ali (both directions), and 62.9% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

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
January16160.0%
February3436▲ 5.9%
March5850▼ 13.8%
April6059▼ 1.7%
May6264▲ 3.2%
June60600.0%
July62620.0%
August44––
September42––
October58–in progress
November38––
December34––
Year to date (Jan–Jul)352347▼ 1.4%

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
January81.3%87.5%▲ 7.6%
February85.3%88.9%▲ 4.2%
March84.5%70.0%▼ 17.2%
April80.0%78.0%▼ 2.5%
May79.0%76.6%▼ 3.0%
June70.0%71.7%▲ 2.4%
July66.1%62.9%▼ 4.8%
August70.5%––
September88.1%––
October81.0%–in progress
November63.2%––
December55.9%––
Year-to-date average (Jan–Jul)78.0%76.5%▼ 1.9%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January220.0%
February00–
March00–
April00–
May00–
June00–
July00–
August0––
September0––
October0–in progress
November2––
December0––
Year to date (Jan–Jul)220.0%

By direction

HOU → SDF

Scheduled flights
523
Flights operated
520
Cancelled
3 · 0.6%
On-time departures
74.2%

SDF → HOU

Scheduled flights
522
Flights operated
519
Cancelled
3 · 0.6%
On-time departures
77.3%

HOU → SDF and SDF → HOU counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 1,045 100.0% 75.7% 6

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 delay13:00–14:0013.0min · 202 recorded · 201 measured
Recorded flights1,045HOU–SDF

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 24 recorded · 24 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 90 recorded · 89 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 121 recorded · 121 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 135 recorded · 134 measured · Source: the US BTS 13:00 · 77.6% · 202 recorded · 201 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 126 recorded · 125 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 93 recorded · 93 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 58 recorded · 58 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 31 recorded · 31 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 84 recorded · 83 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 42 recorded · 41 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 33 recorded · 33 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 24 recorded · 24 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 90 recorded · 89 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 121 recorded · 121 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 135 recorded · 134 measured · Source: the US BTS 13:00 · 13.0 min · 202 recorded · 201 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 126 recorded · 125 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 93 recorded · 93 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 58 recorded · 58 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 31 recorded · 31 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 84 recorded · 83 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 42 recorded · 41 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 33 recorded · 33 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 06:00 · 24 · 24 recorded · 24 measured · Source: the US BTS 07:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · 4 · 4 recorded · 4 measured · Source: the US BTS 10:00 · 90 · 90 recorded · 89 measured · Source: the US BTS 11:00 · 121 · 121 recorded · 121 measured · Source: the US BTS 12:00 · 135 · 135 recorded · 134 measured · Source: the US BTS 13:00 · 202 · 202 recorded · 201 measured · Source: the US BTS 14:00 · 126 · 126 recorded · 125 measured · Source: the US BTS 15:00 · 93 · 93 recorded · 93 measured · Source: the US BTS 16:00 · 58 · 58 recorded · 58 measured · Source: the US BTS 17:00 · 31 · 31 recorded · 31 measured · Source: the US BTS 18:00 · 84 · 84 recorded · 83 measured · Source: the US BTS 19:00 · 42 · 42 recorded · 41 measured · Source: the US BTS 20:00 · 33 · 33 recorded · 33 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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———
05:00Fewer than 200 measured departures—11
06:00Fewer than 200 measured departures—2424
07:00Fewer than 200 measured departures—11
08:00No observations———
09:00Fewer than 200 measured departures—44
10:00Fewer than 200 measured departures—8990
11:00Fewer than 200 measured departures—121121
12:00Fewer than 200 measured departures—134135
13:0077.6%13.0 min201202
14:00Fewer than 200 measured departures—125126
15:00Fewer than 200 measured departures—9393
16:00Fewer than 200 measured departures—5858
17:00Fewer than 200 measured departures—3131
18:00Fewer than 200 measured departures—8384
19:00Fewer than 200 measured departures—4142
20:00Fewer than 200 measured departures—3333
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 160 · 160 recorded · 160 measured · Source: the US BTS Tuesday · 110 · 110 recorded · 110 measured · Source: the US BTS Wednesday · 102 · 102 recorded · 102 measured · Source: the US BTS Thursday · 161 · 161 recorded · 161 measured · Source: the US BTS Friday · 168 · 168 recorded · 167 measured · Source: the US BTS Saturday · 158 · 158 recorded · 158 measured · Source: the US BTS Sunday · 186 · 186 recorded · 181 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—160160
TuesdayFewer than 200 measured departures—110110
WednesdayFewer than 200 measured departures—102102
ThursdayFewer than 200 measured departures—161161
FridayFewer than 200 measured departures—167168
SaturdayFewer than 200 measured departures—158158
SundayFewer than 200 measured departures—181186

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 36 · 36 recorded · 32 measured · Source: the US BTS Feb · 70 · 70 recorded · 70 measured · Source: the US BTS Mar · 108 · 108 recorded · 108 measured · Source: the US BTS Apr · 119 · 119 recorded · 119 measured · Source: the US BTS May · 126 · 126 recorded · 126 measured · Source: the US BTS Jun · 120 · 120 recorded · 120 measured · Source: the US BTS Jul · 124 · 124 recorded · 124 measured · Source: the US BTS Aug · 44 · 44 recorded · 44 measured · Source: the US BTS Sep · 42 · 42 recorded · 42 measured · Source: the US BTS Oct · 104 · 104 recorded · 104 measured · Source: the US BTS Nov · 84 · 84 recorded · 82 measured · Source: the US BTS Dec · 68 · 68 recorded · 68 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—3236
FebFewer than 200 measured departures—7070
MarFewer than 200 measured departures—108108
AprFewer than 200 measured departures—119119
MayFewer than 200 measured departures—126126
JunFewer than 200 measured departures—120120
JulFewer than 200 measured departures—124124
AugFewer than 200 measured departures—4444
SepFewer than 200 measured departures—4242
OctFewer than 200 measured departures—104104
NovFewer than 200 measured departures—8284
DecFewer than 200 measured departures—6868

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 75.3% 787
  • Delayed >15 min 24.1% 252
  • Cancelled 0.6% 6
  • 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

8
8 of 8
Flight numbersBy direction DeparturesOn time
WN4451 SDF → HOU 51 62.8%
WN2856 SDF → HOU 49 85.7%
WN1693 HOU → SDF 40 77.5%
WN159 HOU → SDF 39 87.2%
WN3612 HOU → SDF 34 61.8%
WN4287 SDF → HOU 34 51.5%
WN3606 SDF → HOU 33 57.6%
WN1122 SDF → HOU 32 71.9%

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 62 +0.0% 0 62.9%
June 2026 60 +0.0% 0 71.7%
May 2026 64 +3.2% 0 76.6%
April 2026 59 −1.7% 0 78.0%
March 2026 50 −13.8% 0 70.0%
February 2026 36 +5.9% 0 88.9%
January 2026 16 +0.0% 2 87.5%
December 2025 34 +0.0% 0 55.9%
November 2025 38 −13.6% 2 63.2%
October 2025 58 +26.1% 0 81.0%
September 2025 42 0 88.1%
August 2025 44 0 70.5%
July 2025 62 0 66.1%
June 2025 60 0 70.0%
May 2025 62 0 79.0%
April 2025 60 0 80.0%
March 2025 58 0 84.5%
February 2025 34 0 85.3%
January 2025 16 2 81.3%
December 2024 34 0 61.8%
November 2024 44 0 88.6%
October 2024 46 0 87.0%

How to read this chart

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