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1,058 km · Domestic

LaGuardia (LGA) – Louisville Muhammad Ali (SDF)

In July 2026, 165 flights operated between LaGuardia and Louisville Muhammad Ali (both directions), and 83.0% 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
January246106▼ 56.9%
February24695▼ 61.4%
March277136▼ 50.9%
April275174▼ 36.7%
May272227▼ 16.5%
June222178▼ 19.8%
July214165▼ 22.9%
August181––
September193––
October180–in progress
November181––
December176––
Year to date (Jan–Jul)1,7521,081▼ 38.3%

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
January85.4%88.7%▲ 3.9%
February82.1%81.1%▼ 1.2%
March93.1%73.5%▼ 21.1%
April89.1%85.6%▼ 3.9%
May83.1%83.3%▲ 0.2%
June78.4%90.4%▲ 15.3%
July79.9%83.0%▲ 3.9%
August90.1%––
September92.2%––
October83.9%–in progress
November82.3%––
December75.0%––
Year-to-date average (Jan–Jul)84.4%83.7%▼ 0.9%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January108▼ 20.0%
February29▲ 350.0%
March122▲ 2,100.0%
April110.0%
May64▼ 33.3%
June84▼ 50.0%
July1613▼ 18.8%
August1––
September2––
October4–in progress
November9––
December4––
Year to date (Jan–Jul)4461▲ 38.6%

Airlines on this route

  1. Republic Airways 95.5%
  2. SkyWest Airlines 3.6%
  3. Endeavor Air 0.8%
  4. American Airlines 0.1%

Oct 1, 2024 – Jul 31, 2026

By direction

LGA → SDF

Scheduled flights
2,271
Flights operated
2,211
Cancelled
60 · 2.6%
On-time departures
84.3%

SDF → LGA

Scheduled flights
2,272
Flights operated
2,207
Cancelled
65 · 2.9%
On-time departures
87.5%

LGA → SDF and SDF → LGA counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Republic Airways YX 4,339 95.5% 86.1% 112
SkyWest Airlines OO 164 3.6% 79.5% 13
Endeavor Air 9E 36 0.8% 88.9% 0
American Airlines AA 4 0.1% 50.0% 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 delay06:00–07:00-0.7min · 509 recorded · 497 measured
Gap to highest-delay hour16.8min06:00 ↔ 18:00
Recorded flights4,543LGA–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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 92.6% · 509 recorded · 497 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 192 recorded · 191 measured · Source: the US BTS 08:00 · 90.9% · 337 recorded · 331 measured · Source: the US BTS 09:00 · 90.2% · 482 recorded · 478 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 168 recorded · 166 measured · Source: the US BTS 11:00 · 84.9% · 307 recorded · 298 measured · Source: the US BTS 12:00 · 89.2% · 607 recorded · 599 measured · Source: the US BTS 13:00 · 89.0% · 326 recorded · 319 measured · Source: the US BTS 14:00 · 83.8% · 265 recorded · 253 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 38 recorded · 38 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 209 recorded · 195 measured · Source: the US BTS 17:00 · 79.0% · 514 recorded · 495 measured · Source: the US BTS 18:00 · 74.5% · 512 recorded · 486 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 77 recorded · 72 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · -0.7 min · 509 recorded · 497 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 192 recorded · 191 measured · Source: the US BTS 08:00 · 0.6 min · 337 recorded · 331 measured · Source: the US BTS 09:00 · 1.1 min · 482 recorded · 478 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 168 recorded · 166 measured · Source: the US BTS 11:00 · 2.6 min · 307 recorded · 298 measured · Source: the US BTS 12:00 · 3.7 min · 607 recorded · 599 measured · Source: the US BTS 13:00 · 2.5 min · 326 recorded · 319 measured · Source: the US BTS 14:00 · 6.9 min · 265 recorded · 253 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 38 recorded · 38 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 209 recorded · 195 measured · Source: the US BTS 17:00 · 14.9 min · 514 recorded · 495 measured · Source: the US BTS 18:00 · 16.1 min · 512 recorded · 486 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 77 recorded · 72 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 509 · 509 recorded · 497 measured · Source: the US BTS 07:00 · 192 · 192 recorded · 191 measured · Source: the US BTS 08:00 · 337 · 337 recorded · 331 measured · Source: the US BTS 09:00 · 482 · 482 recorded · 478 measured · Source: the US BTS 10:00 · 168 · 168 recorded · 166 measured · Source: the US BTS 11:00 · 307 · 307 recorded · 298 measured · Source: the US BTS 12:00 · 607 · 607 recorded · 599 measured · Source: the US BTS 13:00 · 326 · 326 recorded · 319 measured · Source: the US BTS 14:00 · 265 · 265 recorded · 253 measured · Source: the US BTS 15:00 · 38 · 38 recorded · 38 measured · Source: the US BTS 16:00 · 209 · 209 recorded · 195 measured · Source: the US BTS 17:00 · 514 · 514 recorded · 495 measured · Source: the US BTS 18:00 · 512 · 512 recorded · 486 measured · Source: the US BTS 19:00 · 77 · 77 recorded · 72 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 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

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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———
06:0092.6%-0.7 min497509
07:00Fewer than 200 measured departures—191192
08:0090.9%0.6 min331337
09:0090.2%1.1 min478482
10:00Fewer than 200 measured departures—166168
11:0084.9%2.6 min298307
12:0089.2%3.7 min599607
13:0089.0%2.5 min319326
14:0083.8%6.9 min253265
15:00Fewer than 200 measured departures—3838
16:00Fewer than 200 measured departures—195209
17:0079.0%14.9 min495514
18:0074.5%16.1 min486512
19:00Fewer than 200 measured departures—7277
20:00No observations———
21:00No observations———
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
Monday · 85.5% · 717 recorded · 690 measured · Source: the US BTS Tuesday · 89.0% · 707 recorded · 681 measured · Source: the US BTS Wednesday · 86.7% · 703 recorded · 694 measured · Source: the US BTS Thursday · 84.4% · 702 recorded · 681 measured · Source: the US BTS Friday · 83.2% · 706 recorded · 698 measured · Source: the US BTS Saturday · 89.0% · 346 recorded · 344 measured · Source: the US BTS Sunday · 84.9% · 662 recorded · 630 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
Monday · 5.8 min · 717 recorded · 690 measured · Source: the US BTS Tuesday · 2.9 min · 707 recorded · 681 measured · Source: the US BTS Wednesday · 4.3 min · 703 recorded · 694 measured · Source: the US BTS Thursday · 6.3 min · 702 recorded · 681 measured · Source: the US BTS Friday · 10.3 min · 706 recorded · 698 measured · Source: the US BTS Saturday · 2.2 min · 346 recorded · 344 measured · Source: the US BTS Sunday · 6.1 min · 662 recorded · 630 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
Monday · 717 · 717 recorded · 690 measured · Source: the US BTS Tuesday · 707 · 707 recorded · 681 measured · Source: the US BTS Wednesday · 703 · 703 recorded · 694 measured · Source: the US BTS Thursday · 702 · 702 recorded · 681 measured · Source: the US BTS Friday · 706 · 706 recorded · 698 measured · Source: the US BTS Saturday · 346 · 346 recorded · 344 measured · Source: the US BTS Sunday · 662 · 662 recorded · 630 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday85.5%5.8 min690717
Tuesday89.0%2.9 min681707
Wednesday86.7%4.3 min694703
Thursday84.4%6.3 min681702
Friday83.2%10.3 min698706
Saturday89.0%2.2 min344346
Sunday84.9%6.1 min630662

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
Jan · 86.4% · 370 recorded · 352 measured · Source: the US BTS Feb · 81.8% · 352 recorded · 341 measured · Source: the US BTS Mar · 86.7% · 436 recorded · 413 measured · Source: the US BTS Apr · 87.8% · 451 recorded · 449 measured · Source: the US BTS May · 83.2% · 509 recorded · 499 measured · Source: the US BTS Jun · 83.8% · 412 recorded · 400 measured · Source: the US BTS Jul · 81.3% · 408 recorded · 379 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 182 recorded · 181 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 195 recorded · 193 measured · Source: the US BTS Oct · 89.9% · 360 recorded · 356 measured · Source: the US BTS Nov · 88.9% · 450 recorded · 441 measured · Source: the US BTS Dec · 84.3% · 418 recorded · 414 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
Jan · 3.3 min · 370 recorded · 352 measured · Source: the US BTS Feb · 10.8 min · 352 recorded · 341 measured · Source: the US BTS Mar · 2.7 min · 436 recorded · 413 measured · Source: the US BTS Apr · 2.2 min · 451 recorded · 449 measured · Source: the US BTS May · 8.0 min · 509 recorded · 499 measured · Source: the US BTS Jun · 10.5 min · 412 recorded · 400 measured · Source: the US BTS Jul · 15.4 min · 408 recorded · 379 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 182 recorded · 181 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 195 recorded · 193 measured · Source: the US BTS Oct · 2.6 min · 360 recorded · 356 measured · Source: the US BTS Nov · 1.3 min · 450 recorded · 441 measured · Source: the US BTS Dec · 4.4 min · 418 recorded · 414 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
Jan · 370 · 370 recorded · 352 measured · Source: the US BTS Feb · 352 · 352 recorded · 341 measured · Source: the US BTS Mar · 436 · 436 recorded · 413 measured · Source: the US BTS Apr · 451 · 451 recorded · 449 measured · Source: the US BTS May · 509 · 509 recorded · 499 measured · Source: the US BTS Jun · 412 · 412 recorded · 400 measured · Source: the US BTS Jul · 408 · 408 recorded · 379 measured · Source: the US BTS Aug · 182 · 182 recorded · 181 measured · Source: the US BTS Sep · 195 · 195 recorded · 193 measured · Source: the US BTS Oct · 360 · 360 recorded · 356 measured · Source: the US BTS Nov · 450 · 450 recorded · 441 measured · Source: the US BTS Dec · 418 · 418 recorded · 414 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan86.4%3.3 min352370
Feb81.8%10.8 min341352
Mar86.7%2.7 min413436
Apr87.8%2.2 min449451
May83.2%8.0 min499509
Jun83.8%10.5 min400412
Jul81.3%15.4 min379408
AugFewer than 200 measured departures—181182
SepFewer than 200 measured departures—193195
Oct89.9%2.6 min356360
Nov88.9%1.3 min441450
Dec84.3%4.4 min414418

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 83.5% 3,795
  • Delayed >15 min 13.7% 623
  • Cancelled 2.8% 125
  • 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

22
22 of 22
Flight numbersBy direction DeparturesOn time
YX5643 LGA → SDF 540 90.4%
YX5652 SDF → LGA 410 93.3%
YX5636 LGA → SDF 372 76.3%
YX5637 LGA → SDF 341 92.3%
YX5643 SDF → LGA 315 87.8%
YX4616 LGA → SDF 308 78.2%
YX4615 SDF → LGA 300 92.0%
YX5637 SDF → LGA 232 81.8%
YX4654 SDF → LGA 203 84.7%
YX5651 SDF → LGA 201 84.3%
YX4654 LGA → SDF 194 87.6%
YX5754 SDF → LGA 180 91.0%
YX5756 LGA → SDF 167 67.1%
YX5651 LGA → SDF 122 83.5%
YX5629 SDF → LGA 97 80.9%
YX5629 LGA → SDF 86 85.7%
OO3919 LGA → SDF 55 84.9%
OO3920 SDF → LGA 55 64.4%
YX5779 SDF → LGA 53 88.7%
YX5802 SDF → LGA 36 91.7%
YX5718 SDF → LGA 32 80.7%
YX5632 SDF → LGA 31 96.8%

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 165 −22.9% 13 83.0%
June 2026 178 −19.8% 4 90.4%
May 2026 227 −16.5% 4 83.3%
April 2026 174 −36.7% 1 85.6%
March 2026 136 −50.9% 22 73.5%
February 2026 95 −61.4% 9 81.1%
January 2026 106 −56.9% 8 88.7%
December 2025 176 −26.1% 4 75.0%
November 2025 181 −30.4% 9 82.3%
October 2025 180 +2.3% 4 83.9%
September 2025 193 2 92.2%
August 2025 181 1 90.1%
July 2025 214 16 79.9%
June 2025 222 8 78.4%
May 2025 272 6 83.1%
April 2025 275 1 89.1%
March 2025 277 1 93.1%
February 2025 246 2 82.1%
January 2025 246 10 85.4%
December 2024 238 0 91.2%
November 2024 260 0 93.5%
October 2024 176 0 96.0%

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