San Francisco (SFO) to Boston (BOS) flights
JetBlue, United Airlines, Delta Air Lines fly nonstop from San Francisco International Airport to Boston Logan International Airport, with about 111 flights a week in July 2026. The 2,704-mile flight takes about 5h 36m gate to gate.
- Distance
- 2,704 mi ยท 4,352 km
- Flight time
- 5h 36m
- Airlines
- 3
- Seats filled
- 86%
Airlines flying SFO to BOS
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| JetBlue | 45 | Airbus A321, Airbus A320-100/200 | 233,924 | 5h 35m |
| United Airlines | 42 | Boeing 737 MAX 9, Boeing 757-200, Boeing 757-300 | 292,879 | 5h 36m |
| Delta Air Lines | 23 | Airbus A321, Boeing 767-300/300ER | 147,980 | 5h 36m |
| Alaska AirlinesSeasonal or ended | n/a | Boeing 737 MAX 9, Boeing 737-900ER, Boeing 737-800 | 24,835 | 5h 40m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SFO to BOS flight schedule
21 flight numbers flew this route in August 2026, 16 of them almost daily. The first usually leaves at 6:00am and the last at 11:59pm. 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) |
|---|---|---|---|---|
| B6 434JetBlue | 6:00am | 2:41pm | 31 | 85% |
| DL 400Delta Air Lines | 7:00am | 3:45pm | 31 | 89% |
| UA 1015United Airlines | 7:00am | 3:54pm | 8 | 94% |
| UA 371United Airlines | 7:00am | 3:55pm | 12 | 100% |
| UA 2647United Airlines | 8:12am | 5:07pm | 29 | 82% |
| UA 2356United Airlines | 10:16am | 7:10pm | 31 | 63% |
| B6 1734JetBlue | 10:25am | 7:12pm | 31 | 66% |
| B6 1534JetBlue | 11:26am | 8:16pm | 31 | 63% |
| UA 1372United Airlines | 12:10pm | 9:02pm | 31 | 74% |
| DL 977Delta Air Lines | 12:25pm | 9:07pm | 31 | 57% |
| B6 1634JetBlue | 12:30pm | 9:18pm | 31 | 61% |
| UA 2634United Airlines | 2:07pm | 10:59pm | 21 | 62% |
| DL 860Delta Air Lines | 3:00pm | 11:41pm | 21 | 39% |
| B6 734JetBlue | 3:18pm | 11:59pm | 31 | 74% |
| UA 2001United Airlines | 4:15pm | 1:11am | 10 | 87% |
| UA 796United Airlines | 9:10pm | 6:02am | 23 | 85% |
| B6 134JetBlue | 9:44pm | 6:28am | 26 | 63% |
| DL 1189Delta Air Lines | 9:48pm | 6:30am | 8 | n/a |
| DL 1655Delta Air Lines | 9:48pm | 6:30am | 14 | 69% |
| UA 1665United Airlines | 11:18pm | 8:14am | 31 | 84% |
| B6 1034JetBlue | 11:59pm | 8:41am | 31 | 61% |
Is SFO to BOS on time?
From September 2025 to August 2026, 75% of 4,815 flights arrived within 15 minutes of schedule and 1.8% were cancelled. Flights leaving around 7am were the most punctual (87%), those around 10am the least (64%). Most delay time was caused by air traffic control and airport congestion (41%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,939 | 79% | 16 min | 1.1% |
| JetBlue | 1,806 | 72% | 23 min | 2.8% |
| Delta Air Lines | 946 | 72% | 21 min | 1.6% |
| Alaska Airlines | 123 | 80% | 13 min | 0.8% |
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 |
|---|---|---|---|
| 6am to 7am | 171 | 87% | |
| 7am to 8am | 614 | 87% | |
| 8am to 9am | 525 | 80% | |
| 10am to 11am | 315 | 64% | |
| 11am to 12pm | 346 | 64% | |
| 12pm to 1pm | 546 | 65% | |
| 1pm to 2pm | 355 | 70% | |
| 2pm to 3pm | 112 | 73% | |
| 3pm to 4pm | 407 | 68% | |
| 4pm to 5pm | 193 | 85% | |
| 8pm to 9pm | 154 | 83% | |
| 9pm to 10pm | 453 | 76% | |
| 10pm to 11pm | 174 | 77% | |
| 11pm to 12am | 415 | 76% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 430 | 70,071 | |
| September 2025 | 408 | 60,243 | |
| October 2025 | 422 | 63,715 | |
| November 2025 | 349 | 50,526 | |
| December 2025 | 354 | 49,714 | |
| January 2026 | 296 | 42,972 | |
| February 2026 | 262 | 37,244 | |
| March 2026 | 322 | 50,665 | |
| April 2026 | 379 | 56,550 | |
| May 2026 | 440 | 66,338 | |
| June 2026 | 500 | 76,129 | |
| July 2026 | 492 | 76,310 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.