Best Time to Fly SDF to DCA: On-Time Stats by Hour & Airline
Louisville Muhammad Ali International → Ronald Reagan Washington National
Data through July 2026 · Last updated October 18, 2026
1,029 flights were scheduled from Louisville (SDF) to Washington (DCA) in the last 12 months, and 78.9% of those that flew arrived on time, 1.2 points above the US average of 77.6%.
Among 2 airlines, Republic Airways led with 84.7% on time and PSA Airlines was last with 73.7%.
Over 24 months, Saturday was the most reliable day (87% on time) and June the worst month (69%).
The cancellation rate was 4.2% (US average 1.8%).
SDF to DCA on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 84.7% | 53 min | 2.0% | 460 |
| PSA Airlines | 73.7% | 110 min | 6.0% | 551 |
| Envoy Air | Limited data | 13 | ||
| American Airlines | Limited data | 5 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SDF to DCA
On-time arrival % by scheduled departure hour (local time), 2,035 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 90.9% | 1.5% | 67 |
| 6am–7am | 89.4% | 1.4% | 585 |
| 7am–8am | 87.9% | 0.0% | 66 |
| 8am–9am | Limited data | 1 | |
| 9am–10am | 87.9% | 8.3% | 36 |
| 10am–11am | 82.3% | 4.5% | 244 |
| 11am–12pm | 79.7% | 6.2% | 390 |
| 12pm–1pm | Limited data | 9 | |
| 1pm–2pm | Limited data | 9 | |
| 2pm–3pm | 52.5% | 4.7% | 64 |
| 3pm–4pm | Limited data | 1 | |
| 4pm–5pm | 61.3% | 5.0% | 159 |
| 5pm–6pm | 79.3% | 3.3% | 120 |
| 6pm–7pm | 66.0% | 1.9% | 52 |
| 7pm–8pm | 46.9% | 12.6% | 183 |
| 8pm–9pm | 48.6% | 24.5% | 49 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SDF to DCA
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 66.7% | -11.9 pts | 0.0% | 36 |
| Christmas & New Year (Dec 20 - Jan 3) | 84.4% | +5.8 pts | 0.0% | 32 |
| Summer peak (Jun 15 - Aug 15) | 74.8% | -3.8 pts | 7.7% | 353 |
| All other days | 78.6% | — | 4.4% | 1,614 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).