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Route on-time record

LGA to SDF: most on-time flights and the best time to fly

New York (LaGuardia Airport) to Louisville (Louisville Muhammad Ali International Airport). 1,086 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 3.8% were cancelled. The most reliable flight number was Republic 5643 at 9:00 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

LGA → SDF

New York to Louisville: 1,086 nonstop flights a year

On time (12 months)

78%

Cancelled

3.8%

avg delay 18 min

Best time to leave

9 AM to noon

85% on time vs 59% 3 to 6 PM

Most reliable airline

SkyWest

80% chance on time

Check LGA to SDF fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · Republic 5643 · sold as American Eagle, Delta Connection or United Express

    9:00 AM → 11:25 AM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    85%

    chance on time

    On time (history)
    87%
    Cancelled
    1.5%
    Avg arrival delay
    6 min
    • Arrived on time 87% of the time (260 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 85% on time; 3 to 6 PM: 59%).
    • Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).

    Strong track record · 260 flights

    Find 9:00 AM flight fares Opens this date on Aviasales

  2. #2 · Republic 5651 · sold as American Eagle, Delta Connection or United Express

    1:53 PM → 4:22 PM2h 29m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    80%

    chance on time

    On time (history)
    85%
    Cancelled
    6.7%
    Avg arrival delay
    9 min
    • Arrived on time 85% of the time (98 flights, Jun 2025 to May 2026).
    • Cancelled 6.7% of the time (7 of 105).
    • Departs inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.

    Moderate track record · 98 flights

    Find 1:53 PM flight fares Opens this date on Aviasales

  3. #3 · Republic 5637 · sold as American Eagle, Delta Connection or United Express

    11:14 AM → 1:41 PM2h 29m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    79%

    chance on time

    On time (history)
    83%
    Cancelled
    0.7%
    Avg arrival delay
    9 min
    • Arrived on time 83% of the time (138 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 85% on time; 3 to 6 PM: 59%).
    • Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).

    Moderate track record · 138 flights

    Find 11:14 AM flight fares Opens this date on Aviasales

  4. #4 · Republic 5636 · sold as American Eagle, Delta Connection or United Express

    6:15 PM → 8:42 PM2h 28m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    68%

    chance on time

    On time (history)
    72%
    Cancelled
    6.5%
    Avg arrival delay
    19 min
    • Arrived on time 72% of the time (130 flights, Jun 2025 to May 2026).
    • Cancelled 6.5% of the time (9 of 139).
    • Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
    • 55% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 130 flights

    Find 6:15 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)80%

    61 flights · 86% on time as flown · 3.6% cancel

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)74%

    1,024 flights · 77% on time as flown · 3.8% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM83%

    102 flights · avg delay 8 min

  • 9 AM to noon85%

    304 flights · avg delay 9 min

  • Noon to 3 PM85%

    277 flights · avg delay 13 min

  • 3 to 6 PM59%

    100 flights · avg delay 55 min

  • 6 to 9 PM68%

    303 flights · avg delay 24 min

Best day: Tuesday (88%). Worst: Sunday (82%).

Smarter routing

Nearby airports that run more on time

  • EWR → SDF 78% chance on time

    Newark Liberty International Airport to Louisville Muhammad Ali International Airport · 954 flights a year · 17 mi from your airports · yours: 75%

    Rank flightsFares

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
83
F
85
M
88
A
83
M
81
J
80
J
77
A
89
S
90
O
88
N
90
D
88

What delays this route

  • Late-arriving aircraft40%
  • Air traffic control and airport volume25%
  • Airline (crew, maintenance, boarding)25%
  • Severe weather10%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from LGA to SDF…

LGA to SDF questions

What time of day is best to fly LGA to SDF?
9 AM to noon: 85% of flights arrived on time, against 59% for departures 3 to 6 PM.
Which airline is most on time from LGA to SDF?
SkyWest, with a season-adjusted 80% chance of operating and arriving on time over 61 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on LGA to SDF?
July (77% on time); the best was September (90%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from LGA

Live status: FAA delays and ground stops