FlightRecord

Louisville (SDF) to Newark (EWR): On-Time Performance

Data through May 2026

Louisville (SDF) to Newark (EWR) has an unusually high scrub rate — 3.7% of scheduled departures never left the gate, a cancellation rate several times the national figure. When flights do go, 86% land on time, no worse than the national average of 78%.

On-time
86%
arrived <15 min late
Avg delay
11 min
completed flights
Cancelled
3.7%
Flights/day
2.6
last 12 months
Duration
2h 14m
scheduled
Distance
642 mi

Monthly on-time trend

Monthly on-time percentage for SDF to EWR flights50%75%100%June 2024: 91% on-time (90 flights)91Jun 2024July 2024: 87% on-time (65 flights)87August 2024: 87% on-time (82 flights)87September 2024: 94% on-time (78 flights)94Sep 2024October 2024: 96% on-time (92 flights)96November 2024: 76% on-time (83 flights)76December 2024: 83% on-time (78 flights)83Dec 2024January 2025: 85% on-time (85 flights)85February 2025: 85% on-time (83 flights)85March 2025: 92% on-time (87 flights)92Mar 2025April 2025: 88% on-time (56 flights)88May 2025: 61% on-time (65 flights)61June 2025: 81% on-time (70 flights)81Jun 2025July 2025: 79% on-time (73 flights)79August 2025: 84% on-time (65 flights)84September 2025: 92% on-time (63 flights)92Sep 2025October 2025: 89% on-time (93 flights)89November 2025: 76% on-time (86 flights)76December 2025: 73% on-time (75 flights)73Dec 2025January 2026: 89% on-time (86 flights)89February 2026: 90% on-time (80 flights)90March 2026: 79% on-time (88 flights)79Mar 2026April 2026: 94% on-time (83 flights)94May 2026: 97% on-time (91 flights)97

Best time to fly from SDF to EWR

Aim for departures around 10 a.m. (97% on-time); avoid 3 p.m. departures (64%).

On-time percentage by scheduled departure hour, SDF to EWR6 a.m.: 90% on-time (502 flights)67 a.m.: 91% on-time (144 flights)78 a.m.: 93% on-time (258 flights)89 a.m.: 86% on-time (67 flights)910 a.m.: 97% on-time (75 flights)1011 a.m.: 90% on-time (195 flights)1112 p.m.: 83% on-time (121 flights)121 p.m.: 74% on-time (309 flights)132 p.m.: 81% on-time (115 flights)143 p.m.: 64% on-time (83 flights)15scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday85%10 min
Tuesdaybest90%6 min
Wednesday89%6 min
Thursday84%15 min
Friday83%12 min
Saturday88%12 min
Sunday81%13 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft17%
  • Airline operations24%
  • National airspace system56%
  • Weather3%

Frequently asked questions

How often are flights from SDF to EWR delayed?
14% of SDF–EWR flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 11 minutes.
What is the best time of day to fly from SDF to EWR?
Departures around 10 a.m. have the best record (97% on-time), while departures around 3 p.m. have the worst (64%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
How long is the flight from SDF to EWR?
The scheduled SDF–EWR flight time averages 2h 14m over 642 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
How often are SDF to EWR flights cancelled?
3.7% of scheduled flights on this route were cancelled between 2024-06 and 2026-05 — several times the typical US rate, so consider earlier departures or backup options.
What is the worst month to fly from SDF to EWR?
May 2025 was the roughest month in this dataset, with only 61% of arrivals on time. The best was May 2026 at 97%. If your dates are flexible, that 36-point gap is worth planning around.

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Based on 1,897 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.