BOI - DEN

$83 Find Cheap Flights from Boise to Denver - Compare and Save

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Everything you should know

Cheapest round-trip
$161
Typical prices: $218-$384
Frontier
Thu 9/6Sat 9/8
BOI - DEN • Non-stop
Cheapest one-way
$83
Typical prices: $107-$238
Frontier
Fri 11/16
BOI - DEN • 1 stop
Nonstop flights
You can fly direct with United Airlines, Southwest and Frontier. Average duration is 1h 58m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 23 weeks in advance save around 48% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $221 (round-trip)
Shortest trip • 4h 00m (one-way)
Insights
Insights
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Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Boise to Denver (BOI-DEN)

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

Recent round-trip flight deals from Boise to Denver

Sun, Sep 6 - Tue, Sep 8
Frontier Logo
12:24 pm - 2:30 pmBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
2h 06mnonstop
Frontier Logo
10:29 am - 12:29 pmDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
2h 00mnonstop
$161Frontier
Tue, Sep 8 - Thu, Sep 10
Frontier Logo
1:24 pm - 3:30 pmBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
2h 06mnonstop
Frontier Logo
6:38 pm - 1:55 pmDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
19h 17m1 stop Las Vegas Harry Reid Intl
$162Frontier
Tue, Sep 8 - Sat, Sep 12
Multiple Airlines Logo
1:24 pm - 3:30 pmBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
2h 06mnonstop
Multiple Airlines Logo
11:50 am - 5:15 pmDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
5h 25m1 stop Portland
$177Multiple Airlines
Tue, Sep 8 - Tue, Sep 15
Multiple Airlines Logo
1:24 pm - 3:30 pmBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
2h 06mnonstop
Multiple Airlines Logo
8:22 am - 3:24 pmDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
7h 02m1 stop Seattle/Tacoma Intl
$177Multiple Airlines
Thu, Sep 24 - Mon, Sep 28
Frontier Logo
2:50 pm - 11:44 pmBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
8h 54m1 stop Las Vegas Harry Reid Intl
Frontier Logo
7:30 am - 1:55 pmDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
6h 25m1 stop Las Vegas Harry Reid Intl
$178Frontier
Tue, Sep 8 - Fri, Sep 11
Multiple Airlines Logo
1:24 pm - 3:30 pmBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
2h 06mnonstop
Multiple Airlines Logo
5:41 pm - 11:44 pmDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
6h 03m1 stop Seattle/Tacoma Intl
$184Multiple Airlines
Wed, Sep 23 - Thu, Sep 24
United Airlines Logo
5:00 am - 7:10 amBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
2h 10mnonstop
United Airlines Logo
7:40 am - 9:34 amDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
1h 54mnonstop
$197United Airlines
Wed, Sep 16 - Wed, Sep 23
United Airlines Logo
5:00 am - 7:10 amBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
2h 10mnonstop
United Airlines Logo
7:40 am - 9:35 amDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
1h 55mnonstop
$197United Airlines
Mon, Dec 14 - Wed, Dec 16
Southwest Logo
7:55 am - 9:50 amBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
1h 55mnonstop
Southwest Logo
1:10 pm - 3:10 pmDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
2h 00mnonstop
$197Southwest
Tue, Nov 17 - Wed, Nov 18
Southwest Logo
7:55 am - 9:50 amBOI  Boise Air Term. Gowen Fld-DEN Denver Intl
1h 55mnonstop
Southwest Logo
1:10 pm - 3:10 pmDEN  Denver Intl-BOI Boise Air Term. Gowen Fld
2h 00mnonstop
$197Southwest
Booking Insights

Price, demand and travel trends for Boise to Denver flights

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

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

Round-trip flights from Boise to Denver start at $161. Prices are below average for this route right now, with typical round-trip fares ranging from $218 to $384. The lowest price found in the past 5 days was $161 on Frontier.

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

Thursday is the cheapest day of the week to fly from Boise to Denver, it is 7% cheaper than the average day. Monday is the most expensive day with flight prices 8% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • February is the cheapest month to fly from Boise to Denver at $228 round-trip.
  • April ($351) and July ($325) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 53% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Boise to Denver the cheapest?

Flights from Boise to Denver are cheapest 23 weeks before departure. Booking in this window typically costs about 48% 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 Boise 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

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.

Blane Bachelor

Blane Bachelor

Expert on Southwest

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 Boise to Denver flights

Low season

March

Cheapest flight

$83
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 7% increase in price.
Flight from Boise to Denver

When to book flights from Boise to Denver

Are your dates flexible? Find out the best times to travel from Boise 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 Boise to Denver flight questions, answered

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

  • What transportation means are available from DEN to the Denver city center?

    Airport rail takes about 37 minutes. You'll find them adjacent to Westin Denver International Airport at level 1. Rental cars are at Island 4, Terminal level 5, for passengers who desire a convenient and private means of transport. You will find taxis at Island 1 outside doors 507 and 510, taking approximately 25 minutes to the city center. You can also board the bus at the transit center at level 1 on the South end of Jeppesen terminal.

  • Which airline gives special assistance to passengers with disability for flights from Boise to Denver?

    Alaska Airlines requires passengers with disability to inform them of the services they need before the flight. You should arrive at the airport at least 2 hours before departure. There are wheelchairs and wheelchair escorts at the airport to assist customers. Passengers who are hard of hearing should identify themselves at the gate and on board to ensure they do not miss important flight information. The visually impaired passengers receive assistance to and from the gates to connect flights and on and off the aircraft. Alaska Airlines doesn't allow more than two service dogs. They require you to make service animal travel requests at least five days before departure.

  • Which airlines are pet-friendly from Boise to Denver?

    Pet lovers traveling from Boise to Denver using Spirit Airlines can travel with small cats, dogs, or household birds. The weight of the pet and the carrier should not exceed 40 lbs. Passengers can carry a maximum of one pet carrier and two pets. Pets do not travel as checked baggage with Spirit Airlines. You will be charged extra for any pet carrier exceeding 18x14x9 inches.

  • Which airline is family-friendly from Boise to Denver?

    Families traveling with kids from Boise to Denver using United Airlines should purchase a ticket and seat for children older than two. Infants can sit on the adult's lap or have their seat if they have an FAA-approved car seat. Ranger Rick's travels kit with crayons and a toy helps distract and engage children through the flight. Breastfeeding mothers will receive ice to store formula and breast milk for free.

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

    Among airlines operating Boise to Denver flights:

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

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

  • What airlines are available from Boise to Denver?

    3 airlines operate flights between Boise and Denver. The airlines offering nonstop flights on this route include:
    • United Airlines
    • Southwest
    • Frontier

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

    Flights from Boise to Denver usually depart from Boise Air Term. Gowen Fld (BOI) and arrive at Denver Intl (DEN).

  • Which airlines include bags at no extra cost on Boise 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
    • Southwest: a cabin bag and a checked bag in Economy Class
    • Frontier: a cabin bag in Economy Class 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 Boise to Denver?

    Two cabin classes are available on flights from Boise to Denver:

    • Economy Class
    • Premium Economy Class

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

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $221 round-trip via Seattle/Tacoma Intl (SEA), compared to $299 for nonstop.

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

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$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 Boise to Denver?

    The Embraer 175 (Enhanced Winglets) family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Boeing 737-900 variants.

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

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

    • Salt Lake City (SLC) - 42% of one-stop connections
    • Portland (PDX) - 33% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 25% of one-stop connections

    Salt Lake City (SLC) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 14% on the Boise to Denver route. Thursday is the cheapest departure day at $279 round-trip on average, while Monday is the most expensive at $322, a difference of $43. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Morning is the busiest departure period on Boise to Denver flights, with 56% of flights leaving in that window. Afternoon departures account for 22%, evening flights for 22%, 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.

  • How long is a flight from Boise to Denver?

    A nonstop flight from Boise to Denver takes 1h 58m, covering 647 miles.

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

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

    • Earliest: departs at 5:00 am and lands at 6:58 am
    • Latest: departs at 5:44 pm and lands at 7:42 pm.

    The flight takes about 1h 58m.

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

    Last-minute fares on this route - booked within 2 weeks of departure - run 53% above the route average of $297. Book 23 weeks before departure for the lowest fares.

  • Do I need a passport to fly from Boise 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 Boise 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 $161 to $714. That means the highest observed fare was about 4x higher than the lowest one.

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

    One-way fares from Boise to Denver are currently lower than usual. Average one-way flight prices are about $99, which is 33% below the typical average for this route.

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

    Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 00m, compared with 5h 05m via Portland (PDX) and 6h 27m via Seattle/Tacoma Intl (SEA).

  • 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 Boise to Denver flight?

    Round-trip flights from Boise to Denver range from $218 to $384, with an average of $297 over the past 12 months. Anything below $218 counts as a good deal.

Your guide to booking Boise 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 Thursday departure instead of Monday. On this route, Thursday flights average $279 - about $43 less than Monday (13% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 23 weeks before you fly. On this route, that window historically saves about 48% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Boise to Denver trip for February. Fares historically average $228 round-trip in that month - typically $123 less than the most expensive month, which is April (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Seattle/Tacoma Intl Airport (SEA) can be cheaper than flying direct. The cheapest layover option averages $221 round-trip on this route - about $79 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
  • Boise Airport (BOI) has three main terminals. The Main Terminal is for private planes and general aviation. Concourses B and C are for commercial flights. United, American, Delta, Allegiant, and Spirit Airlines flights depart from Concourse B, while Concourse C serves Alaska Airlines.
  • Denver International Airport (DEN) is one of the major airports in the US. It serves Colorado, Aurora, Front Range Urban Corridor, and metropolitan Denver. Aurora is about 12 miles from DEN. Denver and Colorado Springs are about 18 and 71 miles from DEN, respectively.
  • Minors traveling unaccompanied require a reservation with Southwest Airlines’ minor unaccompanied program. You will be required to give details of the child's name, your relationship to the child, their address, and paperwork to prove their age. It applies to children between five and 11 years old.
  • United Airlines passengers can bring two items into the cabin at no charge. The items include one personal effect and carry-on bag with a maximum dimension of 9 × 10 × 17 inches and 9 × 14 × 22 inches, respectively. The weight limit should be about 22 lb.
  • Passengers flying with United Airlines can fly with United Polaris, Business, Premium Plus, and Economy Plus. Upgrading to United Polaris gives you access to luxurious amenities like a cozy bed, a hot meal, and silk pajamas. Business class passengers get two bag carry-on allowance and a hot meal. Economy Plus has spacious seats with extra legroom.

Prefer to fly direct from Boise to Denver?

 
Find which airlines fly direct from Boise Air Term. Gowen Fld Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Boise Air Term. Gowen Fld to Denver Intl

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

See more direct flights

Direct returns

Denver Intl to Boise Air Term. Gowen Fld

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

See more direct flights

Everything you need to know for your flight from Boise to Denver

Information on your arrival and departure airports