Denver to Boston flights
about 3 flights a week across 11 operators. Below: the aircraft mix, and what the safety record and the turbulence model say for this route.
Route FAQ
How long does the flight from Denver to Boston take?
Flight time from Denver (DEN) to Boston (BOS) depends on routing, aircraft type, and whether the flight is direct or connecting. A direct flight typically reflects great-circle distance plus winds, while one-stop options can add several hours depending on the layover airport. The typical block time and frequency we have observed for this route are shown above.
Which airlines fly from Denver to Boston?
Airline availability for DEN to BOS changes by season and sometimes week to week as carriers adjust capacity. The airlines and aircraft types observed operating this route, both direct and connecting, are listed below based on real flight-tracking data.
Are there direct flights from Denver to Boston?
Direct (nonstop) availability on DEN to BOS varies by date, day of week, and season. Busy city pairs usually have multiple daily nonstops, while thinner routes may only have direct service a few days per week or only during peak seasons.
No fatal or serious occurrence involving any operator on this pair in the last 90 days.
- United Airlines40
- Delta Air Lines40
- Southwest Airlines40
- JetBlue Airways40
| Carrier | Sightings / 90d | Safety events |
|---|---|---|
| United Airlines | 5 sightings | No recorded events |
| Delta Air Lines | 4 sightings | No recorded events |
| Southwest Airlines | 2 sightings | No recorded events |
| JetBlue Airways | 2 sightings | No recorded events |
Flight patterns on DEN → BOS
We observed 39 flights on this route over the last 90 days (about 3 per week) across 11 airlines.
Departures cluster around 20:00–21:00 UTC, 04:00–05:00 UTC, 17:00–18:00 UTC, busiest on Monday and Friday.
On-time performance: 0% of departures left within 15 minutes of schedule (average delay 49.2 min, based on 12 timed flights).
Historically, 74.8% of flights on DEN → BOS arrived within 15 minutes of schedule (average arrival delay 8.5 min; 1.5% cancelled), across 71,346 flights from 1987–2025. Source: U.S. DOT Bureau of Transportation Statistics (BTS).
In 2025, 1,232,449 passengers flew between BOS and DEN (both directions) on 7,876 flights, led by UA. Source: U.S. DOT BTS T-100. US air traffic.
Carrier on-time performance (last 12 months)
| Carrier | On-time % | Avg delay | Flights |
|---|---|---|---|
| United Airlines | 79.4% | 14.5 min | 3,784 |
| Southwest Airlines | 63.1% | 24.3 min | 1,789 |
| JetBlue Airways | 71.2% | 20.8 min | 1,325 |
| Delta Air Lines | 77.3% | 13.5 min | 816 |
On-time = arrival within 15 minutes of schedule, per U.S. DOT definitions. Source: Bureau of Transportation Statistics (public domain). Delay-cause attribution is reported by carriers since June 2003.
Planning DEN → BOS
DEN to BOS is a medium-haul route of 2,816 km (1,750 mi). See the return BOS → DEN route.
Alternative airports near Denver: Buckley (BFK) — 19 km, Denver (APA) — 36 km, Broomfield-CO (BJC) — 38 km.
Alternative airports near Boston: Norwood (OWD) — 23 km, Bedford (BED) — 26 km, Beverly (BVY) — 26 km.