To Boise

Cheap Flights from Denver to Boise

Browse current best options from Denver. Become a member to unlock all deals and get alerts when new deals appear.

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Denver

RatePunk searches hundreds of travel sites at once for deals on flights to Boise

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Denver to Boise

Explore current cheapest deals departing from Denver to Boise

Round trip

Sort by: Cheapest

August 18 - August 20

Cheapest

Best

Earliest

DEN - Boise

$194

$123

Round trip

October 15 - October 20

DEN - Boise

$177

$126

Round trip

October 6 - October 20

DEN - Boise

$153

$128

Round trip

September 22 - October 20

DEN - Boise

$137

$128

Round trip

September 29 - October 20

DEN - Boise

$143

$128

Round trip

October 13 - October 20

DEN - Boise

$173

$132

Round trip

October 20 - October 22

DEN - Boise

$179

$132

Round trip

October 1 - October 20

DEN - Boise

$141

$144

Round trip

October 15 - October 22

DEN - Boise

$173

$153

Round trip

August 25 - September 15

DEN - Boise

$162

$154

Round trip

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Route Intelligence — 486,190 Searches this Week

Insights for flights from Denver to Boise

A typical journey from Denver to Boise takes about 3h 58m, including any connections. Given that almost all itineraries are non-stop on this route, this duration primarily reflects direct flight times. For the few itineraries that do include a stopover, the typical number of connections is 1.

If you are looking for cheap flights from Denver to Boise, right now fares are below the typical level for this route. Prices typically range from $106–$159, with a median of $132. Currently, 42% of recent fares are classified as a good price. New deals appear almost daily for this route, so frequent checks can be beneficial.

The cheapest time to fly from Denver to Boise is often in May, with a median fare of $114. Other economical months include September, where the median fare is $130, and October, with a median fare of $132.

The flight distance between Denver and Boise is approximately 1042 kilometers. This classifies the route as a short-haul journey, meaning you can expect a relatively quick travel experience.

How much is a round trip from Denver to Boise

Regular price: $137 - $475

Prices for flights from Denver to Boise are currently below the regular range.

The regular price range for flights from Denver to Boise is between $137 and $475. The current lowest deal is $123 with Frontier Airlines, for travel from August 18 to August 20.

now $123

Low $137

High $475

The cheapest time to fly from Denver to Boise

The cheapest month to fly from Denver to Boise is May, with a median price of $114. The most expensive month is March, with a median price of $369. Prices are generally lower from May to October.

May

Cheapest

Flights from $114

March

Most Expensive

Flights from $369

Jan

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Denver to Boise

Frontier Airlines

Last-minute flights going from Denver to Boise

Tue, Jun 23

⌛ Last-Minute

DEN - Boise

Denver (DEN) - Boise (BOI)

Frontier Airlines

$481

$386

One-way

Fri, Jun 26

⌛ Last-Minute

DEN - Boise

Denver (DEN) - Boise (BOI)

Alaska Airlines, Inc.

$487

$470

One-way

Tue, Jun 30

⌛ Last-Minute

DEN - Boise

Denver (DEN) - Boise (BOI)

$433

$354

One-way

Wed, Jul 1

⌛ Last-Minute

DEN - Boise

Denver (DEN) - Boise (BOI)

Alaska Airlines, Inc.

$351

$263

One-way

Wed, Jul 1

⌛ Last-Minute

DEN - Boise

Denver (DEN) - Boise (BOI)

Alaska Airlines, Inc.

$358

$354

One-way

Thu, Jul 2

⌛ Last-Minute

DEN - Boise

Denver (DEN) - Boise (BOI)

Frontier Airlines

$379

$320

One-way

Biggest price drops on these dates for flights from Denver to Boise

6 nights

Jul 15 - Jul 21

$334 → $195

42%

3 nights

Aug 18 - Aug 21

$327 → $192

41%

4 nights

Jul 3 - Jul 7

$369 → $263

29%

6 nights

Jun 23 - Jun 29

$481 → $386

20%

Popular Airports to fly from Denver to Boise

Denver - Boise route insights

💸 Price insights

Recent fares are below the typical level

Recent fares from Denver to Boise are below the typical level, with deals around $123.

📅 Best time to fly

May is historically the cheapest month to fly

Historically, May is the cheapest month to fly from Denver to Boise, with a median price of $114.

⏱️ Flight duration

Direct flights take 3h 58m

The median flight duration for direct flights from Denver to Boise is 3 hours and 58 minutes.

✈️ Airlines & availability

Frontier Airlines offers direct flights

Frontier Airlines has offered direct flights on the Denver to Boise route recently.

🏆 Airline highlight

Frontier Airlines has offered 1 direct deal

Frontier Airlines has offered 1 direct deal from Denver to Boise recently.

🎯 Booking tip

Deals are frequent on this route

Deals on flights from Denver to Boise are frequent, with over 1 deal per day recently.

Denver main airports to depart from

Denver International (DEN)

Cheapest

Denver International Airport is a good choice for flights from Denver to Boise.

📍 ~40 km from city center (reachable by car or train)

💸 Flights from ~$123

Boise main airports to arrive at

Boise (BOI)

Cheapest

Boise Airport is a convenient arrival option for flights from Denver to Boise.

📍 ~6 km from city center (reachable by car)

💸 Flights from ~$123

Airports nearby Boise used as alternative

Salt Lake City International (SLC)

Cheapest

Salt Lake City International is a major international hub with extensive direct flight options for long-haul travel.

📍 ~550 km from Boise (reachable by car)

💸 Flights from ~$55

Spokane International (GEG)

Spokane International is a large regional airport with competitive pricing and good alternatives for Pacific Northwest flights.

📍 ~490 km from Boise (reachable by car)

💸 Flights from ~$246

Tri-Cities (PSC)

Tri-Cities offers several daily connections to major West Coast hubs with reasonable driving distance from Boise.

📍 ~290 km from Boise (reachable by car)

💸 Flights from ~$233

Idaho Falls Regional (IDA)

Idaho Falls Regional is a significant regional airport within Idaho, convenient for domestic connections.

📍 ~360 km from Boise (reachable by car)

💸 Flights from ~$247

Bozeman Yellowstone International (BZN)

Bozeman Yellowstone International has high popularity with a wide range of seasonal and year-round flights.

📍 ~440 km from Boise (reachable by car)

💸 Flights from ~$232

Business & First Class Flight Deals to Boise

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Cheap Flights from Denver to Boise

Today’s best flight deals from Denver to Boise

Unlock all 500+ flight deals to Boise and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Denver to Boise

How much is a round trip from Denver to Boise

The cheapest time to fly from Denver to Boise

Direct flights from Denver to Boise

Last-minute flights going from Denver to Boise

Biggest price drops on these dates for flights from Denver to Boise

Popular Airports to fly from Denver to Boise

Denver - Boise route insights

Recent fares are below the typical level

May is historically the cheapest month to fly

Direct flights take 3h 58m

Frontier Airlines offers direct flights

Frontier Airlines has offered 1 direct deal

Deals are frequent on this route

Denver main airports to depart from

Boise main airports to arrive at

Airports nearby Boise used as alternative

Business & First Class Flight Deals to Boise

Best Elite deals to Boise

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Frequently Asked Questions About Flights to Boise

How far in advance should I book a flight from Denver to Boise?

How far in advance should I book a flight from Denver to Boise?