BOS - DEN

$114 Find Cheap Flights from Boston to Denver - Compare and Save

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Everything you should know

Cheapest round-trip
$222
Typical prices: $278-$468
JetBlue
Sun 10/28Sun 10/28
BOS - DEN • Non-stop
Cheapest one-way
$114
Typical prices: $153-$276
Frontier
Mon 9/17
BOS - DEN • 1 stop
Nonstop flights
You can fly direct with United Airlines, Southwest and others. Average duration is 4h 39m.
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 89% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 14 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 17% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $226 (round-trip)
Shortest trip • 6h 28m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Boston to Denver (BOS-DEN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Denver

Wed, Oct 28 - Wed, Oct 28
JetBlue Logo
8:59 am - 11:50 amBOS  Boston Logan Intl-DEN Denver Intl
4h 51mnonstop
JetBlue Logo
2:00 pm - 8:15 pmDEN  Denver Intl-BOS Boston Logan Intl
4h 15mnonstop
$222JetBlue
Sat, Oct 31 - Thu, Nov 5
Multiple Airlines Logo
11:27 am - 9:32 pmBOS  Boston Logan Intl-DEN Denver Intl
12h 05m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
12:05 pm - 6:05 pmDEN  Denver Intl-BOS Boston Logan Intl
4h 00mnonstop
$223Multiple Airlines
Tue, Oct 20 - Wed, Oct 28
Multiple Airlines Logo
12:57 pm - 9:31 pmBOS  Boston Logan Intl-DEN Denver Intl
10h 34m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
2:00 pm - 8:15 pmDEN  Denver Intl-BOS Boston Logan Intl
4h 15mnonstop
$223Multiple Airlines
Wed, Nov 18 - Tue, Nov 24
JetBlue Logo
8:59 am - 11:47 amBOS  Boston Logan Intl-DEN Denver Intl
4h 48mnonstop
JetBlue Logo
11:59 pm - 5:47 amDEN  Denver Intl-BOS Boston Logan Intl
3h 48mnonstop
$224JetBlue
Sat, Oct 24 - Mon, Oct 26
United Airlines Logo
7:38 am - 12:21 pmBOS  Boston Logan Intl-DEN Denver Intl
6h 43m1 stop Newark
United Airlines Logo
3:53 pm - 9:46 pmDEN  Denver Intl-BOS Boston Logan Intl
3h 53mnonstop
$225United Airlines
Sat, Oct 24 - Sat, Oct 31
United Airlines Logo
7:38 am - 12:21 pmBOS  Boston Logan Intl-DEN Denver Intl
6h 43m1 stop Newark
United Airlines Logo
9:35 am - 3:30 pmDEN  Denver Intl-BOS Boston Logan Intl
3h 55mnonstop
$225United Airlines
Wed, Oct 21 - Mon, Oct 26
Southwest Logo
4:15 pm - 10:30 pmBOS  Boston Logan Intl-DEN Denver Intl
8h 15m1 stop Nashville Intl
Southwest Logo
7:20 pm - 1:15 amDEN  Denver Intl-BOS Boston Logan Intl
3h 55mnonstop
$225Southwest
Wed, Oct 21 - Sat, Oct 24
Southwest Logo
5:25 am - 7:55 amBOS  Boston Logan Intl-DEN Denver Intl
4h 30mnonstop
Southwest Logo
5:45 am - 4:30 pmDEN  Denver Intl-BOS Boston Logan Intl
8h 45m1 stop Nashville Intl
$225Southwest
Thu, Sep 17 - Sat, Sep 19
Frontier Logo
11:17 am - 7:37 amBOS  Boston Logan Intl-DEN Denver Intl
22h 20m1 stop Orlando
Frontier Logo
6:40 am - 10:58 amDEN  Denver Intl-BOS Boston Logan Intl
26h 18m1 stop Orlando
$230Frontier
Thu, Oct 1 - Sat, Oct 10
Frontier Logo
11:17 am - 3:37 pmBOS  Boston Logan Intl-DEN Denver Intl
30h 20m1 stop Orlando
Frontier Logo
7:02 pm - 11:02 amDEN  Denver Intl-BOS Boston Logan Intl
14h 00m1 stop Orlando
$233Frontier
Booking Insights

Price, demand and travel trends for Boston to Denver flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Boston to Denver with more confidence.

How much is a round-trip flight from Boston to Denver?

Round-trip flights from Boston to Denver start at $222. Prices are below average for this route right now, with typical round-trip fares ranging from $278 to $468. The lowest price found in the past 5 days was $222 on JetBlue.

What's the cheapest day of the week to fly from Boston to Denver?

Wednesday is the cheapest day of the week to fly from Boston to Denver, it is 13% cheaper than the average day. Sunday is the most expensive day with flight prices 17% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Boston to Denver?

  • January is the cheapest month to fly from Boston to Denver at $303 round-trip.
  • June ($414) and July ($401) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 36% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Boston to Denver the cheapest?

Flights from Boston to Denver are cheapest 14 weeks before departure. Booking in this window typically costs about 27% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Boston to Denver

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on JetBlue and DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Blane Bachelor

Blane Bachelor

Expert on Southwest and BOS

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Key details for Boston to Denver flights

Low season

December

Cheapest flight

$114
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 13% increase in price.
Flight from Boston to Denver

When to book flights from Boston to Denver

Are your dates flexible? Find out the best times to travel from Boston to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Boston to Denver flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • How can I get from Denver airport to downtown Denver?

    A quick and economic way to reach downtown Denver is with the A Line Commuter Train, which departs from the airport’s station. To reach Denver Union Station, it will take about 40 min and a day pass will cost approximately $11. The train departs every 15 min from the station and runs from 3:00 am to 1:00 am. If you arrive outside these times, you can also opt for a taxi, which will cost approximately $56 to get to Denver.

  • Where can I sleep close to Denver airport?

    To find accommodation close to Denver airport, look no further than the Westin Denver International Airport Hotel. This modern hotel is just a few steps from the terminal building and offers a huge business center, various event rooms, and swimming pools. Multiple restaurants are also dotted around, for a well-rounded hotel experience just a few minutes from the airport.

  • Can I park long-term at Boston airport?

    Boston Logan airport has an economy-friendly parking lot just a few minutes from the terminal building. This way, you can drive your own car to the airport and have it await your return without accumulating astronomical fees. The first day costs approximately $52 and each subsequent day is approximately $26. To reach the airport, you can use the courtesy shuttle bus operating between the lot and the terminals.

  • How far is the Rocky Mountain Arsenal Wildlife Refuge from Denver Airport?

    Denver airport lies conveniently close to the Rocky Mountain Wildlife Refuge and only 16 mi separate you from an encounter with the wild animals. You can reach it by public transport with the A Line Train to Central Park Station, then change for the 62 bus, which stops at Prairie Parkway.

  • How many terminals are there at Denver International Airport (DEN)?

    There’s only one terminal at DEN, the Jeppesen Terminal, and three concourses: A, B, and C. Jeppesen Terminal serves check-in facilities, security checkpoints, customs, immigration and baggage claim. On the other hand, the concourses are used for departure. Transfer from the terminal to the three concourses is via the Automated Guideway Transit System. This service runs from the terminal through the concourses every 5-15min.

  • Are there any lounges at Denver International Airport (DEN)?

    Several carriers operate multiple lounges at Denver International Airport (DEN), including American Airlines’ Admirals Club and Delta Airline’s Delta Sky Club. Members and holders of registered cards get priority access. Also, as an economy class traveler, you can access these lounges if you agree to pay for a day pass.

  • Is there a prayer room at DEN?

    Suppose you want to retreat to a quiet space and thank your god for a safe journey from BOS to DEN – you’ll be happy to learn that BOS offers a dedicated prayer room. The room is situated in Jeppesen Terminal, Level 6 East. Services start at 4 am and close at midnight, daily. This religious sanctuary accommodates both the Islamic Masjid and an interfaith chapel.

  • Where can I withdraw money at DEN?

    If you’ve just landed at DEN and want to recharge your wallet, you won’t have a shortage of options. The Public Service Credit Union runs ATMs in the Jeppesen Terminal and at A, B and C Gates.

  • Which airlines offer extra legroom and free seat selection on Boston to Denver flights?

    Among airlines operating Boston to Denver 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.

  • What airlines are available from Boston to Denver?

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

    • United Airlines
    • Southwest
    • JetBlue
    • Delta

  • Which airports can I use when flying from Boston to Denver?

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

  • Which airlines include bags at no extra cost on Boston to Denver flights?

    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
    • Delta: 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.

  • What cabin classes can I book on flights from Boston to Denver?

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

    • Economy Class
    • Premium Economy Class
    • First Class

  • How much can I save by taking a layover when flying from Boston to Denver?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $226 round-trip via Cleveland Hopkins Intl (CLE), compared to $367 for nonstop.

  • What is the standard checked-bag allowance on flights from Boston to Denver?

    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.

  • Which aircraft model is used most often on flights from Boston to Denver?

    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 Airbus A220-300 variants.

  • Which airports do connecting flights from Boston to Denver pass through?

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

    • Atlanta Hartsfield-Jackson (ATL) - 19% of one-stop connections
    • Dallas/Fort Worth (DFW) - 16% of one-stop connections
    • Philadelphia (PHL) - 16% 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.

  • Can I save money by using flexible dates for flights from Boston to Denver?

    Yes. Being flexible with your travel dates can save you up to 26% on the Boston to Denver route. Wednesday is the cheapest departure day at $318 round-trip on average, while Sunday is the most expensive at $429, a difference of $111. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • At what point is a flight considered delayed from Boston to Denver?

    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 Boston to Denver route, 18% of flights were delayed in the past 3 months, with delays averaging 2 hours 29 minutes.

  • How are flight departures from Boston to Denver spread across the day?

    Morning is the busiest departure period on Boston to Denver flights, with 70% of flights leaving in that window. Afternoon departures account for 20%, evening flights for 10%, and night flights for 0%.

  • What popular places can I visit in Denver?

    Some of the most popular sights in Denver are Colorado Convention Center, Union Station Denver and Coors Field. These are among the most viewed places in Denver on KAYAK.

  • What are the earliest and latest flights from Boston to Denver?

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

    • Earliest: departs at 5:00 am and lands at 9:39 am
    • Latest: departs at 9:06 pm and lands at 1:45 am.

    The flight takes about 4h 39m.

  • How expensive are last-minute Boston to Denver flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 20% above the route average of $365. Book 14 weeks before departure for the lowest fares.

  • How long is a flight from Boston to Denver?

    A nonstop flight from Boston to Denver takes 4h 39m, covering 1,748 miles.

  • Do I need a passport to fly from Boston to Denver?

    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.

  • Have flight prices from Boston to Denver changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $222 to $1,765. That means the highest observed fare was about 8x higher than the lowest one.

  • How are flight prices from Boston to Denver looking right now?

    One-way fares from Boston to Denver are currently lower than usual. Average one-way flight prices are about $117, which is 44% below the typical average for this route.

  • How does Delta’s on-time performance compare to other airlines on Boston to Denver flights?

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

    • Delta: 89% on time
    • United Airlines: 87% on time
    • JetBlue: 77% on time

    Overall, flights on this route are on time 82% of the time on average.

  • How do delay rates compare for morning and evening flights from Boston to Denver?

    Night 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.

  • How much time can I save by choosing a different layover airport from Boston to Denver?

    Flying via Baltimore/Washington (BWI) gives the shortest average 1-stop total travel time at 6h 28m, compared with 6h 39m via Lambert-St Louis (STL) and 6h 41m via Chicago O'Hare Intl (ORD).

  • What is the time difference between Boston and Denver?

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

  • What car rental options are available at Denver Intl Airport (DEN)?

    Denver Intl Airport (DEN) hosts 5 major car rental companies, with daily rates starting from around $16 for economy cars. Top options include:
    · Routes Car & Truck Rentals
    · Ace
    · NU Car
    · Europcar
    · Hertz

  • How much should I expect to pay for a Boston to Denver flight?

    Round-trip flights from Boston to Denver range from $278 to $468, with an average of $365 over the past 12 months. Anything below $278 counts as a good deal.

  • Which airlines offer Wi-Fi on Boston to Denver flights?

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

Your guide to booking Boston to Denver flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average $318 - about $111 less than Sunday (26% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 14 weeks before you fly. On this route, that window historically saves about 27% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Boston to Denver trip for January. Fares historically average $303 round-trip in that month - typically $111 less than the most expensive month, which is June (based on the last 12 months).
  • If arriving on time is high on your priority list, Delta is the strongest pick on this route. 89% of Delta flights from Boston to Denver arrived on time in the past 3 months, slightly above the route's average on-time arrival rate of 82%. When flights on this route do arrive late, the average delay is 2 hours 29 minutes, so choosing a carrier with strong on-time performance can make a difference on tight schedules.
  • If you have the time, taking a 1-stop flight through Cleveland Hopkins Intl Airport (CLE) can be cheaper than flying direct. The cheapest layover option averages $226 round-trip on this route - about $141 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Denver Intl Airport.
    - The Westin Denver International Airport
  • Do you want to fly nonstop from Boston to Denver without spending too much money? With low-cost airlines like Frontier, JetBlue, and Spirit Airlines, this is an easy mission to accomplish. Any of these three airlines offer direct and cheap flights from Boston to Denver, so you have more money to spend in Colorado’s capital city.
  • While waiting for your flight from Boston to Denver at Boston Logan International Airport (BOS), let your kids spend their energy at the Kidports of Terminal A, B, or C. Toys and a big airplane are there for fun and entertainment before boarding.
  • Boston Airport features various lounges, some of which also give out entry passes to economy flyers of any airline. The Club is located in Terminal E in the post-security area and economy passengers can purchase 3-hour passes for approximately $40. The Lounge in Terminal C on the first floor, close to Gate C19, also welcomes economy travelers for a fee of $40 per 3h.
  • Denver International Airport (DEN) has an extensive art program that welcomes passengers in style and is also acknowledged as one of the best US airports for art. Permanent and limited exhibitions find their place all around the airport and definitely serve as eye candy for any travelers passing through the corridors and terminal halls.
  • There are two 24-hour eateries at Denver International Airport, in case you arrive late and your stomach is rumbling. Einstein Bros. and Bagels is located in the Center Core of the C Gates and invites with scrumptious bagels and other snacks. If you are at the A Gates and fancy a burger, McDonald’s also has its doors open round the clock.
  • Boston Logan International Airport (BOS) serves as the biggest and busiest airport in Boston. It’s also ranked as one of the 20 busiest establishments in the US. It’s equipped with high-tech innovations and modern infrastructure, hence the airport of choice for most airlines. BOS features four terminals, A, B and C, which are dedicated to domestic departures and arrivals, and E, which handles international flights. Inter-terminal transfer is via walkways, and a shuttle operates from one terminal to the next every 5-15min.
  • As part of the TSA (Transportation Security Administration) Cares program, Boston Logan International Airport (BOS) caters to the needs of passengers with disabilities and travelers with mobility limitations. There are trained and dedicated agents under this program to guide you past the security checks, when using elevators and as you board.
  • In case you’ve arrived at BOS to connect to Denver and you’re feeling fatigued, seek self-indulgence and therapy in some of the spas at this facility. For deep-tissue massage, facials, manicures, pedicures, and waxing, head to Xpress Spa in Terminal B near the American Airlines counter.
  • Those with morning flights from BOS to Denver International Airport (DEN) should consider spending a night at one of the many hotels near Boston Logan International Airport (BOS). Normally, most of these facilities provide their clients with courtesy shuttles to and from the airport. A recommended hotel in this area is Courtyard by Marriott Boston Logan Airport.
  • BOS and downtown Boston are 3.4 miles apart. The best way to travel between the two destinations is via the Silver Line, also known as Route SL1. It departs from the south central station and completes the journey in around 10min.

Prefer to fly direct from Boston to Denver?

 
Find which airlines fly direct from Boston Logan Intl Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Boston Logan Intl to Denver Intl

Monday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Tuesday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Wednesday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Thursday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Friday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Saturday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Sunday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

See more direct flights

Direct returns

Denver Intl to Boston Logan Intl

Monday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Tuesday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Wednesday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Thursday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Friday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Saturday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Sunday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

See more direct flights

More options for your flight from Boston to Denver

Complete your trip to Denver with a hotel stay or car rental