Boston Logan to Denver International
1750 miles great-circle distance, typically flown in 3h 55m with 7 airlines operating direct service from Boston Logan (BOS) to Denver International (DEN). Cheapest fares are usually in January (around $169 return), with peak prices in August (around $507). Departures on a Tuesday tend to undercut weekend prices on this corridor.
Flying from Boston Logan
Boston Logan International sits across the harbour from downtown — one of the most central airport locations in the country, just 3 miles from the Financial District. The Silver Line SL1 bus runs free for arriving passengers from each terminal directly to South Station in around 15 minutes; the MBTA Blue Line via the airport shuttle reaches downtown Boston in 25 minutes. JetBlue has its largest base here; Delta and AA add significant capacity, and transatlantic service from Aer Lingus, BA, Virgin and Lufthansa is dense.
Arriving in Denver
Denver International is 25 miles northeast of downtown Denver — the most remote big-city airport in the US, deliberately sited to allow for unlimited expansion. The University of Colorado A Line commuter train runs from a dedicated station every 15 minutes to Union Station in 37 minutes for $10.50. Snow can disrupt operations from November through April; Denver fares are cheapest in shoulder seasons (April–May, September–October).
Who flies BOS to DEN?
| Airline | IATA | Flight time | Cabin |
| JetBlue Airways | B6 | 3h 55m | Economy |
| Delta Air Lines | DL | 3h 55m | Economy |
| American Airlines | AA | 3h 55m | Economy |
| United Airlines | UA | 3h 55m | Economy |
| Southwest Airlines | WN | 3h 55m | Economy |
| Spirit Airlines | NK | 3h 55m | Economy |
| Alaska Airlines | AS | 3h 55m | Economy |
7 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly BOS→DEN
Synthesised from 12-month price aggregates. Cheapest months in green, peak in red.
Estimated baseline. Prices update on a 30-day cadence as Travelpayouts data refreshes. Cheapest day-of-week typically Tuesday.
Boston to Denver FAQs
Direct flights from Boston Logan (BOS) to Denver International (DEN) take approximately 3h 55m for the 1750-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
January is typically the cheapest month on this route, with one-way fares from $169. August is the peak — expect prices 2–3× higher. Book 4–8 weeks ahead for best fares; last-minute prices on this corridor rise sharply inside two weeks of departure.
7 carriers operate direct service from Boston Logan (BOS) to Denver International (DEN): JetBlue Airways, Delta Air Lines, American Airlines, United Airlines, Southwest Airlines and 2 more. Frequencies vary by season and carrier — JetBlue Airways typically operates the highest weekly count on this corridor.
No — United States is domestic travel for US citizens. A US passport is not required for the 50 states, DC or US territories (Puerto Rico, US Virgin Islands, Guam, American Samoa, Northern Mariana Islands), though Real ID-compliant ID is required at TSA from May 2025.
Denver International (DEN) is the primary international airport for Denver. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.