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Cheap Flights from Boston to Denver | EazAir

Travellers

Boston to Denver flight insights

Average flight time

~4h 19m (estimated)

BOS → DEN

Cheapest month

—

Based on cached fare history

Cheapest cached price

$104

Checking live fares…

Prices shown may not be current. Last checked: Oct 6, 2026.

Planning a trip from Boston to Denver? The average flight time on this route is ~4h 19m (estimated). The lowest fare we recorded on this route recently was $104 (last checked Oct 6, 2026); today's live fare for your dates can differ.

Boston to Denver covers a straight-line distance of about 1,750 miles. Based on that distance, a nonstop flight would take approximately ~4h 19m (estimated). Actual flight time varies by airline, aircraft and routing.

Route Quick Facts

Quick facts for flights from Boston to Denver on Eazair
OriginBoston (BOS)
DestinationDenver (DEN)
Average Flight Time~4h 19m (estimated)
Cheapest Month to Fly—
Current Lowest Fare$104
Fares Last CheckedOct 6, 2026

Flight deals from Boston to Denver

Direct flights departing from Boston Logan International Airport (BOS) arrive at Denver International Airport (DEN) daily. Passengers traveling this 1,754-mile route frequently book with United Airlines, Delta Air Lines, and JetBlue Airways. Frontier Airlines also operates non-stop service connecting the Massachusetts capital directly to the Mile High City for budget-conscious travelers. A typical non-stop flight from Boston to Denver takes approximately four hours and forty-five minutes. Factoring in the two-hour time difference between the Eastern and Mountain time zones helps travelers plan their arrival schedules efficiently. Morning departures from New England often allow passengers to reach Colorado before noon, maximizing daylight hours for Rocky Mountain activities. Peak travel months for this Massachusetts-to-Colorado corridor include December through March, driven by ski season demand. Summer travel from Boston to Denver also surges in July when hikers and outdoor enthusiasts head west. Booking airfare roughly three to six weeks ahead of these peak seasons usually secures the lowest economy class rates on this transcontinental route.

View of Denver, a popular flight destination from Boston

About Denver

Popular areas to know in Denver include LoDo (Lower Downtown), RiNo Art District, and Capitol Hill.

A semi-arid climate with over 300 sunny days a year; the high altitude keeps evenings cool even in summer, and winter brings snow to the nearby mountains.

Frequently asked questions

How long is a direct flight from Boston to Denver?
Non-stop flights originating in Boston and landing in Denver typically take about 4 hours and 45 minutes to cover the 1,754-mile distance.
Which airlines fly non-stop from Boston to Denver?
JetBlue, United Airlines, Delta Air Lines, and Frontier Airlines provide direct routes connecting Boston Logan International Airport to Denver International Airport.
When is the cheapest time to book tickets from Boston to Denver?
Securing flights from Boston to Denver usually costs less when booking 30 to 45 days in advance, particularly for non-peak travel months like October or April.
What are the checked baggage rules for flights from Boston to Denver?
Baggage policies vary by carrier, but most airlines operating the Boston to Denver route charge standard fees for checked bags exceeding 50 pounds, while Frontier charges for both carry-on and checked luggage.
Which departure terminals serve flights from Boston to Denver?
Travelers leaving Boston for Denver typically depart from Terminal B for United Airlines, Terminal A for Delta Air Lines, and Terminal C for JetBlue.
What is the time difference when flying from Boston to Denver?
Boston operates on Eastern Time, which is two hours ahead of Denver's Mountain Time, meaning you gain two hours upon arrival in Colorado.
Are morning or evening flights cheaper from Boston to Denver?
Early morning departures from Boston generally offer lower airfare to Denver compared to mid-day or Friday evening flights.
How do I get to the city center after flying from Boston to Denver?
Upon landing from Boston, passengers can take the A Line commuter train from Denver International Airport, which reaches downtown Denver's Union Station in roughly 37 minutes.
Does airfare from Boston to Denver increase during ski season?
Yes, flight prices from Boston to Denver routinely rise between December and March as New England skiers travel west to access Colorado's major ski resorts.
How many daily flights operate from Boston to Denver?
There are typically around 12 to 15 direct daily flights departing Boston Logan bound for Denver International, providing multiple schedule options for travelers.
Where do connecting flights from Boston to Denver usually layover?
If you do not choose a direct option, flights starting in Boston and ending in Denver frequently layover in cities like Chicago (ORD), Atlanta (ATL), or Dallas (DFW).
How far is it from Boston to Denver?
The straight-line distance from Boston to Denver is about 1,750 miles.
What ID do I need to fly from Boston to Denver?
Since Boston to Denver is a domestic US flight, you'll need a REAL ID-compliant driver's license or another TSA-accepted form of ID, such as a valid US passport. A standard, non-compliant driver's license alone is no longer accepted at TSA checkpoints.
Which airlines operate flights from Boston to Denver?
Based on a recent live fare search, Southwest Airlines, Frontier Airlines, American Airlines, United Airlines, JetBlue and Delta Air Lines had bookable flights on the Boston to Denver route.
What's the weather usually like in Denver?
A semi-arid climate with over 300 sunny days a year; the high altitude keeps evenings cool even in summer, and winter brings snow to the nearby mountains.

Airline bag fees

Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.

Travel tips

Arrive early for domestic flights

TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.

Pack a mixed carry-on

Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.

Ease jet lag on longer routes

On longer cross-country flights, adjusting your sleep schedule a day or two before departure and staying hydrated in flight can reduce jet lag on arrival.

Screenshot your confirmation

Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.

Check in online when it opens

Most airlines open online check-in 24 hours before departure — checking in early can help with seat selection and, on some airlines, boarding group assignment.

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Airlines seen in our fare searches for this route: Southwest Airlines, Frontier Airlines, American Airlines, United Airlines, JetBlue, Delta Air Lines

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