Route guide
Cheap Flights from Boston to Denver: Book Airline Tickets
- Distance
- about 1,750 mi
- Typical flight time
- 3 h 45 min – 4 h 45 min
- Airports
- 1 × 1
- Time difference
- 2 h behind
This page covers the practical side of flying between Boston and Denver: which airports to compare, how long the trip takes, and when it is busy. It works for either direction. For a price on your dates, ask a specialist.
Quick answer: Boston to Denver is about 1,750 miles (2,820 km) and a typical flight takes 3 h 45 min to 4 h 45 min. Denver is 2 hours behind Boston. Boston has 1 airport to compare and Denver has 1.
Airport pairs to compare
Boston's Logan airport is unusually close to downtown, separated from the center only by the harbor. Denver's airport lies on the plains northeast of the city, roughly 25 miles from downtown, so ground transport time matters.
| Pair | Departure airport | Arrival airport |
|---|---|---|
| BOS to DEN | Boston Logan International | Denver International |
About the airports
- BOS · Boston Logan International
Minutes from downtown across the harbor, with subway and Silver Line bus access. - DEN · Denver International
Sits roughly 25 miles northeast of downtown, with a commuter rail line to Union Station.
Airlines with a major base at either end
- At Boston: Delta Air Lines, JetBlue Airways
- At Denver: United Airlines, Southwest Airlines
Airlines with a base at one end often connect through their hub. A specialist can compare nonstop and connecting options on your dates.
When to go and what to expect
Boston
Fall foliage season (late September through October) is popular and tends to be expensive. Winter storms can disrupt travel.
Denver
Ski season (roughly late November through April) and summer are the busiest periods. Winter storms can disrupt flights, and spring snow is not unusual.
How long is Boston to Denver?
At about 1,750 miles, Boston to Denver is a long domestic-style flight of several hours. Meal options, seat choice and baggage rules matter more on a trip this long, so compare the full total rather than just the base fare.
Time zones and timing
Denver is 2 hours behind Boston, so you land at a local time 2 hours earlier than departure time plus flight time would suggest. Plan your arrival day around local time at the destination.
Getting between the airport and town
Boston: The Blue Line subway and the Silver Line bus connect Logan with downtown.
Denver: The A Line commuter train runs from the airport to Union Station downtown. Shuttles and rental cars serve the mountains.
Planning ground transport too? See our car rental guide.
Good to know
- Book earlier for fall weekends and graduation season in late spring, when hotels and flights fill up.
- If you are heading to a ski area, allow extra time on mountain roads in winter, and watch the forecast before travel day.
- Compare the total with bags included, not just the base fare. See baggage fees and taxes and fees.
Flying Denver to Boston?
This route guide works in both directions. For other trips, see all flights from Boston or all flights from Denver.
Frequently asked questions
How far is Boston from Denver?
The straight-line distance between the main airports is about 1,750 miles (2,820 km). Routes can be longer in practice because of air traffic and weather.
How long is a flight from Boston to Denver?
A typical scheduled flight takes roughly 3 h 45 min to 4 h 45 min in the air, depending on winds, the aircraft and the airports. Connecting itineraries take longer, and nonstop availability depends on the airline and dates.
Which airports can I use?
At Boston: BOS (Boston Logan International). At Denver: DEN (Denver International). Ask for prices on more than one pairing.
Is there a time difference?
Denver is 2 hours behind Boston.
When is the best time to fly from Boston to Denver?
In Boston: Fall foliage season (late September through October) is popular and tends to be expensive. Winter storms can disrupt travel. In Denver: Ski season (roughly late November through April) and summer are the busiest periods. Winter storms can disrupt flights, and spring snow is not unusual. Fares are usually highest in the busy periods described for each city, so flexible dates can help.
Which airlines should I compare for Boston to Denver?
Airlines with a major base at either end include Delta Air Lines, JetBlue Airways, United Airlines and Southwest Airlines. A specialist compares them with other carriers on your dates, since schedules and availability change.
Do you show fares on this page?
No. Fares change constantly, so we do not publish prices that might be out of date. A specialist checks live availability and confirms the full total, including taxes and bags, before you pay.
Route details updated October 18, 2026.