Denver (DEN) to Boston (BOS) flights
United Airlines, Southwest Airlines, JetBlue, Delta Air Lines fly nonstop from Denver International Airport to Boston Logan International Airport, with about 86 flights a week in July 2026. The 1,754-mile flight takes about 3h 50m gate to gate.
- Distance
- 1,754 mi · 2,823 km
- Flight time
- 3h 50m
- Airlines
- 4
- Seats filled
- 88%
Airlines flying DEN to BOS
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 40 | Airbus A321, Boeing 737-900ER, Boeing 737 MAX 9 | 317,168 | 3h 52m |
| Southwest Airlines | 21 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 135,975 | 3h 45m |
| JetBlue | 18 | Airbus A220-300, Airbus A320-100/200, Airbus A321 | 80,993 | 3h 50m |
| Delta Air Lines | 7 | Airbus A321, Airbus A319, Boeing 737-900ER | 61,548 | 3h 57m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DEN to BOS flight schedule
19 flight numbers flew this route in August 2026, 9 of them almost daily. The first usually leaves at 6:20am 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) |
|---|---|---|---|---|
| WN 1546Southwest Airlines | 6:20am | 12:15pm | 4 | n/a |
| UA 558United Airlines | 7:45am | 1:47pm | 28 | 92% |
| WN 2279Southwest Airlines | 8:40am | 2:45pm | 12 | 83% |
| UA 1232United Airlines | 9:51am | 3:56pm | 31 | 85% |
| B6 494JetBlue | 9:54am | 3:57pm | 31 | 66% |
| DL 499Delta Air Lines | 11:33am | 5:35pm | 31 | 72% |
| WN 697Southwest Airlines | 11:40am | 5:40pm | 16 | 69% |
| UA 597United Airlines | 1:50pm | 7:55pm | 31 | 69% |
| B6 394JetBlue | 1:55pm | 7:58pm | 31 | 62% |
| WN 1250Southwest Airlines | 2:20pm | 8:15pm | 12 | 17% |
| UA 1912United Airlines | 4:00pm | 9:59pm | 18 | 61% |
| UA 2798United Airlines | 4:03pm | 10:06pm | 10 | 44% |
| WN 192Southwest Airlines | 5:20pm | 11:15pm | 8 | 52% |
| UA 1356United Airlines | 5:40pm | 11:44pm | 10 | 70% |
| UA 2671United Airlines | 5:47pm | 11:54pm | 21 | 65% |
| WN 3652Southwest Airlines | 6:00pm | 12:05am | 8 | n/a |
| WN 233Southwest Airlines | 6:30pm | 12:30am | 12 | 25% |
| B6 994JetBlue | 11:37pm | 5:30am | 31 | 67% |
| UA 2656United Airlines | 11:59pm | 5:59am | 22 | 91% |
Is DEN to BOS on time?
From September 2025 to August 2026, 70% of 3,851 flights arrived within 15 minutes of schedule and 1.5% were cancelled. Flights leaving around 8am were the most punctual (84%), those around 1pm the least (56%). Most delay time was caused by air traffic control and airport congestion (45%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,887 | 77% | 18 min | 1% |
| Southwest Airlines | 908 | 57% | 30 min | 1.1% |
| JetBlue | 691 | 65% | 31 min | 3.5% |
| Delta Air Lines | 365 | 72% | 19 min | 1.1% |
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 |
|---|---|---|---|
| 7am to 8am | 188 | 95% | |
| 8am to 9am | 226 | 84% | |
| 9am to 10am | 474 | 75% | |
| 10am to 11am | 223 | 69% | |
| 11am to 12pm | 434 | 72% | |
| 1pm to 2pm | 253 | 56% | |
| 2pm to 3pm | 472 | 62% | |
| 3pm to 4pm | 133 | 58% | |
| 4pm to 5pm | 185 | 69% | |
| 5pm to 6pm | 465 | 70% | |
| 6pm to 7pm | 116 | 38% | |
| 7pm to 8pm | 118 | 38% | |
| 11pm to 12am | 430 | 80% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 395 | 63,615 | |
| September 2025 | 331 | 53,654 | |
| October 2025 | 342 | 54,562 | |
| November 2025 | 291 | 43,009 | |
| December 2025 | 301 | 44,764 | |
| January 2026 | 247 | 37,720 | |
| February 2026 | 248 | 34,723 | |
| March 2026 | 300 | 47,417 | |
| April 2026 | 284 | 44,349 | |
| May 2026 | 322 | 52,014 | |
| June 2026 | 372 | 58,564 | |
| July 2026 | 380 | 61,293 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.