$125 Find Cheap Flights from Denver to Boston - Compare and Save

Public transportation to DEN includes the A Line commuter train from Denver Union Station in downtown Denver and the SkyLine airport bus line to Jeppesen Terminal. Both run through most of the day. Shared rides and shuttle buses can also be arranged online, though they are not public transportation.

BOS is connected to South Station in downtown Boston by the Silver Line.

The West security checkpoint in the Jeppesen Terminal on Level 6 is one option when security lines are long. CLEAR is another option, offering premium lanes and document verification kiosks for a faster, more predictable screening process.

Airport employees can provide additional assistance after arrival at Boston Logan International Airport (BOS). The airport also has ramps, elevators and wheelchair-accessible restrooms.

Yes, each terminal at BOS has an indoor and an outdoor pet relief area.

DEN has several parking options. Budget-friendly choices include several Economy Parking Lots, while parking closer to the terminal is available in the East and West garages. The garages, the Short Term facility and the 61st and Peña Lot offer sub-daily and daily rates. Economy, Pikes Peak, Longs Peak and Premium Reserve offer daily rates only.

Among airlines operating Denver to Boston flights:

• United Airlines: offers extra legroom; offers free seat selection
• JetBlue: offers extra legroom; offers free seat selection
• Southwest: offers free seat selection
• Delta: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

4 airlines operate flights between Denver and Boston. The airlines offering nonstop flights on this route include:

• United Airlines
• Southwest
• JetBlue
• Delta

Flights from Denver to Boston usually depart from Denver Intl (DEN) and arrive at Boston Logan Intl (BOS).

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in Economy Class
• JetBlue: a cabin bag and a checked bag in Economy Class
• Southwest: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Four cabin classes are available on flights from Denver to Boston:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $260 round-trip via Orlando (MCO), compared to $377 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Airbus A321neo family is used most often on this route, operated mainly by United Airlines and Delta. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

One-stop flights from Denver to Boston most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 13% of one-stop connections
• Philadelphia (PHL) - 12% of one-stop connections
• Chicago O'Hare Intl (ORD) - 12% of one-stop connections
• Charlotte Douglas (CLT) - 8% of one-stop connections

Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 22% on the Denver to Boston route. Wednesday is the cheapest departure day at $338 round-trip on average, while Monday is the most expensive at $433, a difference of $95. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Denver to Boston route, 25% of flights were delayed in the past 3 months, with delays averaging 2 hours 39 minutes.

Morning is the busiest departure period on Denver to Boston flights, with 40% of flights leaving in that window. Afternoon departures account for 30%, evening flights for 20%, and night flights for 10%.

Some of the most popular sights in Boston are TD Garden, Fenway Park and Boston Common. These are among the most viewed places in Boston on KAYAK.

These are the earliest and latest flight times available from Denver to Boston:

• Earliest: departs at 6:10 am and lands at 10:08 am
• Latest: departs at 11:59 pm and lands at 3:57 am.

The flight takes about 3h 58m.

Last-minute fares on this route - booked within 2 weeks of departure - run 27% above the route average of $371. Book 24 weeks before departure for the lowest fares.

A nonstop flight from Denver to Boston takes 3h 58m, covering 1,748 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $227 to $1,002. That means the highest observed fare was about 4x higher than the lowest one.

One-way fares from Denver to Boston are currently lower than usual. Average one-way flight prices are about $126, which is 43% below the typical average for this route.

United Airlines is slightly above the route average for timely arrivals, while Delta has a lower on-time arrival rate. On-time arrival rates on Denver to Boston flights are:

• United Airlines: 81% on time
• Delta: 81% on time
• JetBlue: 72% on time

Overall, flights on this route are on time 75% of the time on average.

Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Chicago Midway (MDW) gives the shortest average 1-stop total travel time at 5h 51m, compared with 6h 21m via Lambert-St Louis (STL) and 6h 26m via Washington, D.C. Dulles Intl (IAD).

Boston is 2 hours ahead of Denver (Eastern Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

Boston Logan Intl Airport (BOS) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
• Dollar
• Hertz
• Budget
• Thrifty
• Sixt

Round-trip flights from Denver to Boston range from $279 to $487, with an average of $371 over the past 12 months. Anything below $279 counts as a good deal.

Two airlines offer in-flight Wi-Fi on Denver to Boston flights:

• JetBlue
• Delta

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.