Route on-time record
DAL to SDF: most on-time flights and the best time to fly
Dallas (Dallas Love Field) to Louisville (Louisville Muhammad Ali International Airport). 351 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was Southwest 1925 at 1:45 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DAL → SDF
Dallas to Louisville: 351 nonstop flights a year
On time (12 months)
75%
Cancelled
1.1%
avg delay 14 min
Best time to leave
9 AM to noon
84% on time vs 57% 3 to 6 PM
Most reliable airline
Southwest
74% chance on time
Lowest nonstop fare seen in the next two months: $330 (Southwest 1460 on 2026-10-23). 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 · Southwest 1925
1:45 PM → 4:40 PM1h 55m nonstop
Local times, typical schedule. Last flown 2026-04-06.
74%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 73% of the time (15 flights, Jun 2025 to May 2026).
- Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- 59% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 1925 fares Opens this date on Aviasales#2 · Southwest 1683
11:00 AM → 2:00 PM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-29.
74%
chance on time
- On time (history)
- 65%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 65% of the time (23 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 84% on time; 3 to 6 PM: 57%).
- Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 1683 fares Opens this date on Aviasales#3 · Southwest 683
1:25 PM → 4:20 PM1h 55m nonstop
Local times, typical schedule. Last flown 2026-04-01.
72%
chance on time
- On time (history)
- 63%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 63% of the time (8 flights, Jun 2025 to May 2026).
- Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 683 fares Opens this date on Aviasales#4 · Southwest 1970
2:10 PM → 5:10 PM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-27.
69%
chance on time
- On time (history)
- 56%
- Cancelled
- 0.0%
- Avg arrival delay
- 22 min
- Arrived on time 56% of the time (16 flights, Jun 2025 to May 2026).
- Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 1970 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines74%
351 flights · 75% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon84%
148 flights · avg delay 10 min
- Noon to 3 PM73%
115 flights · avg delay 16 min
- 3 to 6 PM57%
69 flights · avg delay 23 min
Best day: Tuesday (87%). Worst: Thursday (67%).
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.
What delays this route
- Late-arriving aircraft43%
- Airline (crew, maintenance, boarding)41%
- Air traffic control and airport volume14%
- Severe weather2%
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
DAL to SDF questions
- What time of day is best to fly DAL to SDF?
- 9 AM to noon: 84% of flights arrived on time, against 57% for departures 3 to 6 PM.
- Which airline is most on time from DAL to SDF?
- Southwest, with a season-adjusted 74% chance of operating and arriving on time over 351 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 DAL to SDF?
- April (69% on time); the best was September (91%), 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 DAL
- SDF to DAL (return)
- DAL to HOU 74%
- DAL to ATL 79%
- DAL to DEN 69%
- DAL to PHX 76%
- DAL to LAS 76%
- DAL to SAT 79%
- DAL to MCO 71%
- DAL to BNA 73%
- DAL to AUS 78%
- DAL to MSY 76%
- DAL to MDW 71%
- DAL to MCI 76%
Live status: FAA delays and ground stops