$34 Cheap Flights from Boise (BOI) to Denver (DEN)

View $34 flight on Tue, May 27, 2025Opens in a new window

Popular airlines from Boise Airport (BOI) to Denver Intl. Airport (DEN)

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Find available prices by choosing your travel dates.

Cheap Flights from Boise to Denver (BOI-DEN)

Prices were available within the past 7 days and start at $34 for one-way flights and $68 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, May 20 - Tue, May 27
BOI
Boise
DEN
Denver
$68 Roundtrip, found 9 hours ago
$68
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Tue, May 20 from Boise to Denver, returning Tue, May 27, priced at $68 found 9 hours ago
Frontier Airlines
Sun, May 18 - Tue, May 20
BOI
Boise
DEN
Denver
$119 Roundtrip, found 3 hours ago
$119
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sun, May 18 from Boise to Denver, returning Tue, May 20, priced at $119 found 3 hours ago
Frontier Airlines
Tue, May 27 - Wed, May 28
BOI
Boise
DEN
Denver
$129 Roundtrip, found 3 hours ago
$129
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Tue, May 27 from Boise to Denver, returning Wed, May 28, priced at $129 found 3 hours ago
Frontier Airlines
Tue, May 20 - Tue, May 27
BOI
Boise
DEN
Denver
$132 Roundtrip, found 9 hours ago
$132
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Tue, May 20 from Boise to Denver, returning Tue, May 27, priced at $132 found 9 hours ago
Delta
Sun, May 25 - Tue, May 27
BOI
Boise
DEN
Denver
$139 Roundtrip, found 3 hours ago
$139
Roundtrip
found 3 hours ago
Select Delta flight, departing Sun, May 25 from Boise to Denver, returning Tue, May 27, priced at $139 found 3 hours ago
Southwest Airlines
Mon, May 19 - Tue, May 20
BOI
Boise
DEN
Denver
$140 Roundtrip, found 3 hours ago
$140
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Mon, May 19 from Boise to Denver, returning Tue, May 20, priced at $140 found 3 hours ago
Southwest Airlines
Tue, May 20 - Tue, May 27
BOI
Boise
DEN
Denver
$144 Roundtrip, found 9 hours ago
$144
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Tue, May 20 from Boise to Denver, returning Tue, May 27, priced at $144 found 9 hours ago
Southwest Airlines
Tue, May 20 - Tue, May 27
BOI
Boise
DEN
Denver
$144 Roundtrip, found 9 hours ago
$144
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Tue, May 20 from Boise to Denver, returning Tue, May 27, priced at $144 found 9 hours ago
United
Sat, May 17 - Tue, May 20
BOI
Boise
DEN
Denver
$150 Roundtrip, found 8 hours ago
$150
Roundtrip
found 8 hours ago
Select United flight, departing Sat, May 17 from Boise to Denver, returning Tue, May 20, priced at $150 found 8 hours ago
Alaska Airlines
Sat, May 17 - Tue, May 20
BOI
Boise
DEN
Denver
$172 Roundtrip, found 8 hours ago
$172
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Sat, May 17 from Boise to Denver, returning Tue, May 20, priced at $172 found 8 hours ago

Frequently asked questions

How much does a flight from Boise Airport (BOI) to Denver Intl. Airport (DEN) cost?
Cheap return flights from Boise Airport (BOI) to Denver Intl. Airport (DEN) start at $159. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving BOI on May 18 2025 and touching down at DEN. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from BOI to DEN?
The cheapest flights from BOI to DEN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Boise Airport (BOI) to Denver Intl. Airport (DEN)?
Board a direct flight with United Airlines and journey straight from Boise Airport (BOI) to Denver Intl. Airport (DEN).
What is the cheapest airline that flies from BOI to DEN?
Book a flight from BOI to DEN with Frontier Airlines. This airline currently offers the cheapest one-way fare for this route, starting from $74. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BOI on May 27 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Boise Airport (BOI) to Denver Intl. Airport (DEN)?
Daily, an average of 7 direct flights take off from Boise Airport (BOI) to Denver Intl. Airport (DEN). Choose the departure date that fits your schedule best.
What are the most popular departure times for flights from Boise Airport (BOI) to Denver Intl. Airport (DEN)?
The 7 AM departures from BOI to DEN are the top choice for many travelers. Greater demand means you’ll likely pay more for these departures. If you want to save money, pick a less crowded time to fly.
What day of the week has the most flights from BOI to DEN?
Depart on a Friday if you’re after the best selection of flights from Boise Airport (BOI) to Denver Intl. Airport (DEN).
What is the earliest flight from Boise Airport (BOI) to Denver Intl. Airport (DEN)?
Boise Airport (BOI)’s first flight to Denver Intl. Airport (DEN) leaves at approximately 5:10AM UTC-7. With a total journey time of 2h, you’ll touch down at around 7:10AM UTC-7.
How long does it take to fly from Boise Airport (BOI) to Denver Intl. Airport (DEN)?
Flights from BOI to DEN have an average travel time of 2 hours and 2 minutes. The total distance between the two is 650 mi.
What airline has the least delays from BOI to DEN?
Consider traveling with Southwest Airlines if you’d like to go straight from Boise Airport (BOI) to Denver Intl. Airport (DEN) without any holdups. This carrier has the strongest track record for punctuality, with an on-time score of 85%. Want to be notified if anything changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Boise Airport (BOI) to Denver Intl. Airport (DEN)?
To avoid potential delays on the Boise Airport (BOI) to Denver Intl. Airport (DEN) route, travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Denver from Boise Airport (BOI)?
Denver Intl. Airport (DEN) is the only airport in Denver with direct flights from Boise Airport (BOI). Browse the options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Denver Intl. Airport (DEN) last-minute?
Waiting until just before your trip to book your flight from BOI to DEN generally means paying more. While you might find some last-minute offers, there’s no guarantee. Allow some flexibility in your schedule for a better chance of landing a bargain.
Is it cheaper to book a BOI to DEN flight and hotel package?
Securing a BOI to DEN flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Pick from our impressive range of stays and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Denver Intl. Airport (DEN)?
In most instances, you’re able to cancel or reschedule your BOI to DEN flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline’s fees and rules on flight changes, or if you want further information, head to our Customer Service portal.
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