Boston (BOS) to Baltimore (BWI) flights
Southwest Airlines, Republic Airline fly nonstop from Boston Logan International Airport to Baltimore/Washington International Thurgood Marshall Airport, with about 68 flights a week in July 2026. The 369-mile flight takes about 1h 31m gate to gate.
- Distance
- 369 mi · 594 km
- Flight time
- 1h 31m
- Airlines
- 2
- Seats filled
- 77%
Airlines flying BOS to BWI
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 45 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 297,305 | 1h 28m |
| Republic Airline | 23 | Embraer E175 | 56,183 | 1h 39m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A320-100/200, Airbus A320neo | 5,628 | 1h 32m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
BOS to BWI flight schedule
22 flight numbers flew this route in August 2026, 6 of them almost daily. The first usually leaves at 5:25am and the last at 9:55pm. 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) |
|---|---|---|---|---|
| WN 1642Southwest Airlines | 5:25am | 6:55am | 12 | 83% |
| WN 857Southwest Airlines | 5:50am | 7:15am | 16 | 100% |
| DL 5703Delta Air Lines · operated by Republic Airline | 6:35am | 8:20am | 31 | 91% |
| WN 2667Southwest Airlines | 7:20am | 8:55am | 4 | n/a |
| WN 280Southwest Airlines | 7:40am | 9:15am | 12 | 100% |
| WN 3985Southwest Airlines | 8:10am | 9:45am | 4 | n/a |
| WN 4333Southwest Airlines | 8:15am | 9:50am | 8 | n/a |
| WN 2409Southwest Airlines | 9:40am | 11:15am | 12 | 83% |
| DL 5668Delta Air Lines · operated by Republic Airline | 11:10am | 12:53pm | 20 | 84% |
| WN 1377Southwest Airlines | 12:10pm | 1:45pm | 4 | n/a |
| WN 2098Southwest Airlines | 2:15pm | 3:50pm | 24 | 71% |
| WN 4264Southwest Airlines | 2:20pm | 3:55pm | 4 | n/a |
| WN 735Southwest Airlines | 2:45pm | 4:20pm | 17 | 44% |
| WN 2439Southwest Airlines | 3:35pm | 5:10pm | 16 | 43% |
| DL 5644Delta Air Lines · operated by Republic Airline | 3:55pm | 5:47pm | 31 | 77% |
| WN 3823Southwest Airlines | 4:55pm | 6:40pm | 12 | 42% |
| WN 2396Southwest Airlines | 5:30pm | 7:15pm | 12 | 30% |
| WN 697Southwest Airlines | 6:25pm | 8:10pm | 12 | 73% |
| WN 858Southwest Airlines | 6:45pm | 8:25pm | 28 | 72% |
| DL 5851Delta Air Lines · operated by Republic Airline | 8:45pm | 10:39pm | 26 | 59% |
| WN 1250Southwest Airlines | 8:55pm | 10:35pm | 12 | 80% |
| WN 3401Southwest Airlines | 9:55pm | 11:30pm | 4 | n/a |
Is BOS to BWI on time?
From September 2025 to August 2026, 78% of 3,536 flights arrived within 15 minutes of schedule and 2.9% were cancelled. Flights leaving around 5am were the most punctual (94%), those around 8pm the least (49%). Most delay time was caused by late-arriving aircraft (56%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 2,413 | 77% | 17 min | 2.3% |
| Delta Air Lines | 1,099 | 82% | 13 min | 4.3% |
| Spirit Airlines | 24 | 75% | 20 min | 0% |
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 |
|---|---|---|---|
| 5am to 6am | 343 | 94% | |
| 6am to 7am | 169 | 96% | |
| 7am to 8am | 188 | 94% | |
| 8am to 9am | 312 | 90% | |
| 9am to 10am | 202 | 94% | |
| 10am to 11am | 118 | 90% | |
| 11am to 12pm | 136 | 84% | |
| 12pm to 1pm | 171 | 87% | |
| 1pm to 2pm | 284 | 83% | |
| 2pm to 3pm | 210 | 79% | |
| 3pm to 4pm | 295 | 73% | |
| 4pm to 5pm | 106 | 58% | |
| 5pm to 6pm | 390 | 69% | |
| 6pm to 7pm | 127 | 51% | |
| 7pm to 8pm | 150 | 52% | |
| 8pm to 9pm | 181 | 49% | |
| 9pm to 10pm | 119 | 52% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 313 | 38,373 | |
| September 2025 | 284 | 30,695 | |
| October 2025 | 335 | 35,973 | |
| November 2025 | 278 | 29,681 | |
| December 2025 | 272 | 29,630 | |
| January 2026 | 224 | 19,153 | |
| February 2026 | 212 | 19,825 | |
| March 2026 | 261 | 24,847 | |
| April 2026 | 321 | 33,637 | |
| May 2026 | 316 | 32,412 | |
| June 2026 | 301 | 31,163 | |
| July 2026 | 303 | 33,904 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.