Louisville (SDF) to Boston (BOS) flights
Republic Airline, Envoy Air fly nonstop from Louisville Muhammad Ali International Airport to Boston Logan International Airport, with about 13 flights a week in July 2026. The 829-mile flight takes about 2h 24m gate to gate.
- Distance
- 829 mi · 1,334 km
- Flight time
- 2h 24m
- Airlines
- 2
- Seats filled
- 74%
Airlines flying SDF to BOS
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Republic Airline | 9 | Embraer E175 | 25,716 | 2h 24m |
| Envoy Air | 5 | Embraer E175 | 12,992 | 2h 25m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SDF to BOS flight schedule
3 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 12:54pm and the last at 5:10pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| DL 5615Delta Air Lines · operated by Republic Airline | 12:54pm | 3:30pm | 31 | 78% |
| AA 4786American Airlines · operated by Republic Airline | 4:34pm | 7:05pm | 8 | 87% |
| AA 4110American Airlines · operated by Envoy Air | 5:10pm | 7:41pm | 19 | 67% |
Is SDF to BOS on time?
From September 2025 to August 2026, 71% of 709 flights arrived within 15 minutes of schedule and 2.1% were cancelled. Flights leaving around 10am were the most punctual (92%), those around 5pm the least (61%). Most delay time was caused by air traffic control and airport congestion (63%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| American Airlines | 360 | 69% | 21 min | 1.4% |
| Delta Air Lines | 349 | 73% | 21 min | 2.9% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 10am to 11am | 78 | 92% | |
| 12pm to 1pm | 131 | 77% | |
| 1pm to 2pm | 165 | 64% | |
| 2pm to 3pm | 39 | 72% | |
| 3pm to 4pm | 22 | 76% | |
| 4pm to 5pm | 153 | 63% | |
| 5pm to 6pm | 82 | 61% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 60 | 3,750 | |
| September 2025 | 57 | 3,647 | |
| October 2025 | 60 | 3,816 | |
| November 2025 | 62 | 3,300 | |
| December 2025 | 57 | 2,839 | |
| January 2026 | 47 | 1,714 | |
| February 2026 | 46 | 1,794 | |
| March 2026 | 61 | 3,018 | |
| April 2026 | 62 | 3,323 | |
| May 2026 | 64 | 4,025 | |
| June 2026 | 61 | 3,885 | |
| July 2026 | 59 | 3,896 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.