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Cheap flights from Idaho to Denver from $39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Denver departing on 3/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Idaho to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:53 am - 1:56 pm
BOI
-
DEN
2h 03mnonstop
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
$92Frontier
Thu, Apr 30 - Sun, May 3
Frontier Logo
11:53 am - 1:56 pm
BOI
-
DEN
2h 03mnonstop
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
$93Frontier
Thu, May 14 - Sun, May 17
Multiple Airlines Logo
11:32 am - 2:46 pm
GEG
-
DEN
2h 14mnonstop
Multiple Airlines Logo
7:05 pm - 7:55 pm
DEN
-
GEG
25h 50m
1 stop
$162Multiple Airlines
Thu, May 14 - Wed, May 20
Multiple Airlines Logo
11:32 am - 2:46 pm
GEG
-
DEN
2h 14mnonstop
Multiple Airlines Logo
10:39 am - 7:55 pm
DEN
-
GEG
34h 16m
2 stops
$171Multiple Airlines
Thu, May 14 - Wed, May 20
United Airlines Logo
5:20 pm - 7:10 pm
IDA
-
DEN
1h 50mnonstop
United Airlines Logo
8:10 am - 9:55 am
DEN
-
IDA
1h 45mnonstop
$189United Airlines
Wed, Apr 29 - Sat, May 2
United Airlines Logo
5:30 pm - 7:22 pm
IDA
-
DEN
1h 52mnonstop
United Airlines Logo
8:10 am - 9:53 am
DEN
-
IDA
1h 43mnonstop
$198United Airlines
Sat, Mar 28 - Sun, Mar 29
Delta Logo
6:00 am - 9:22 am
IDA
-
DEN
3h 22m
1 stop
Delta Logo
5:40 am - 10:47 am
DEN
-
IDA
5h 07m
1 stop
$209Delta
Sat, May 30 - Mon, Jun 1
Delta Logo
5:25 am - 9:24 am
IDA
-
DEN
3h 59m
1 stop
Delta Logo
6:15 pm - 10:16 pm
DEN
-
IDA
4h 01m
1 stop
$224Delta
Sat, Mar 7 - Sat, Mar 14
Alaska Airlines Logo
11:52 am - 6:56 pm
SUN
-
DEN
7h 04m
1 stop
Alaska Airlines Logo
1:10 pm - 2:03 pm
DEN
-
SUN
24h 53m
1 stop
$326Alaska Airlines
Fri, Mar 6 - Tue, Mar 10
Alaska Airlines Logo
11:52 am - 6:56 pm
SUN
-
DEN
7h 04m
1 stop
Alaska Airlines Logo
6:45 pm - 2:03 pm
DEN
-
SUN
19h 18m
1 stop
$346Alaska Airlines
Fri, Mar 6 - Tue, Mar 10

Frontier flights from Idaho to Denver

Our best Frontier deals on Idaho to Denver flight tickets
Frontier
Feb 27
BOI11:56 amBoise Air Term. Gowen Fld
2h 00m
DEN1:56 pmDenver Intl
Mar 1
DEN9:01 amDenver Intl
2h 10m
BOI11:11 amBoise Air Term. Gowen Fld
$88
Frontier
Apr 30
BOI11:53 amBoise Air Term. Gowen Fld
2h 03m
DEN1:56 pmDenver Intl
May 3
DEN9:10 amDenver Intl
1h 58m
BOI11:08 amBoise Air Term. Gowen Fld
$92
Frontier
May 14
BOI11:53 amBoise Air Term. Gowen Fld
2h 03m
DEN1:56 pmDenver Intl
May 17
DEN9:10 amDenver Intl
1h 58m
BOI11:08 amBoise Air Term. Gowen Fld
$93

Delta flights from Idaho to Denver

Our best Delta deals on Idaho to Denver flight tickets
Delta
Mar 10
GEG6:15 amSpokane
5h 10m
1 stop
DEN12:25 pmDenver Intl
Mar 17
DEN7:40 pmDenver Intl
5h 23m
1 stop
GEG12:03 amSpokane
$183
Delta
May 7
GEG9:32 amSpokane
7h 20m
1 stop
DEN5:52 pmDenver Intl
May 10
DEN6:21 pmDenver Intl
6h 35m
2 stops
GEG11:56 pmSpokane
$188
Delta
Apr 2
GEG3:25 pmSpokane
7h 07m
1 stop
DEN11:32 pmDenver Intl
Apr 6
DEN6:30 amDenver Intl
5h 20m
1 stop
GEG10:50 amSpokane
$203

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 18, 2026.
Use the filters below to find and compare flights from Idaho to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 4/30

11:53 am-1:56 pm

Nonstop2h 03m

Denver Intl

Sun 5/3

9:10 am-11:08 am

Nonstop1h 58m

$92

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 5/14

11:53 am-1:56 pm

Nonstop2h 03m

Denver Intl

Sun 5/17

9:10 am-11:08 am

Nonstop1h 58m

$93

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 5/14

11:32 am-2:46 pm

Nonstop2h 14m

Denver Intl

Wed 5/20

7:05 pm-7:55 pm

1 stop25h 50m

$162

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 5/14

11:32 am-2:46 pm

Nonstop2h 14m

Denver Intl

Wed 5/20

10:39 am-7:55 pm

2 stops34h 16m

$171

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Wed 4/29

5:20 pm-7:10 pm

Nonstop1h 50m

Denver Intl

Sat 5/2

8:10 am-9:55 am

Nonstop1h 45m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 3/28

5:30 pm-7:22 pm

Nonstop1h 52m

Denver Intl

Sun 3/29

8:10 am-9:53 am

Nonstop1h 43m

$198

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 5/30

6:00 am-9:22 am

1 stop3h 22m

Denver Intl

Mon 6/1

5:40 am-10:47 am

1 stop5h 07m

$209

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 3/7

5:25 am-9:24 am

1 stop3h 59m

Denver Intl

Sat 3/14

6:15 pm-10:16 pm

1 stop4h 01m

$224

HaileyDenver

SUN - DEN

SUNDEN

Hailey Sun Valley-Friedman

Fri 3/6

11:52 am-6:56 pm

1 stop7h 04m

Denver Intl

Tue 3/10

1:10 pm-2:03 pm

1 stop24h 53m

$326

HaileyDenver

SUN - DEN

SUNDEN

Hailey Sun Valley-Friedman

Fri 3/6

11:52 am-6:56 pm

1 stop7h 04m

Denver Intl

Tue 3/10

6:45 pm-2:03 pm

1 stop19h 18m

$346

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Denver from

How to get the cheapest flight ticket from Idaho to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Idaho is in October. Flight prices, which tend to average around $187, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in October, then you should wait until August to fly from Idaho, when ticket prices are also cheap, with an average price of $221.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $399. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Monday, with ticket prices averaging around $520.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the afternoon when flights can be purchased for as low as $425. Flights at noon are often more expensive with an average ticket price of $467.

What is the cheapest Idaho to Denver Intl flight route?

Fly from Boise Air Term. Gowen Fld to Denver Intl for the best Idaho - Denver Intl flight prices

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

You are more likely to see cheaper flights to Denver from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $261 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Idaho for as low as $190 on momondo.

What cabin class options are available on Idaho to Denver Intl flights?

There are 4 cabin classes available to choose from on Idaho to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Idaho to Denver flights?

No. A direct flight is the cheapest option for a flight between Idaho to Denver.

Cheap Idaho to Denver flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Denver

Best Price Found

$168

Fastest flight time

1h 39m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from Idaho in the past 72 hours is $168. The best round-trip flight deal from Idaho to Denver found on momondo in the last 72 hours is $332.
The fastest flight from Idaho to Denver takes 1h 39m
Direct flights go from Idaho to Denver every day.
There is 1 airport in Denver. From Idaho there are direct flights to Denver Intl (DEN).
Search flight deals

  • When did momondo last update prices for flights from Idaho to Denver Intl Airport?

    Prices for flights from Idaho to Denver Intl Airport are updated daily.

  • How many operators does momondo search for flights from Idaho to Denver Intl Airport?

  • How old do you have to be to fly from Idaho to Denver Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The travel and health documents you'll need for your trip to Denver Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Idaho to Denver?

Best airlines flying from Idaho to Denver

Compare and see reviews for airlines that fly from Idaho to Denver with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $43Free CancellationRating
7.2
711 reviews
Search Allegiant Air flights
FrontierPriceFrom $52Free CancellationRating
5.7
3,048 reviews
Search Frontier flights
DeltaPriceFrom $128Free CancellationRating
7.9
8,209 reviews
Search Delta flights
Alaska AirlinesPriceFrom $154Free CancellationRating
8.0
11,904 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $161Free CancellationRating
7.4
9,319 reviews
Search United Airlines flights
SouthwestPriceFrom $189Free CancellationRating
8.0
4,294 reviews
Search Southwest flights

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Breckenridge
Estes Park
Black Hawk
Aurora
Fort Collins
Manitou Springs
Boulder
Cripple Creek
Longmont
Keystone
Greeley
Lakewood
Westminster
Thornton
Frisco
Copper Mountain
Winter Park
Centennial
Grand Lake
Englewood

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Denver?

It is quick and easy to find Idaho to Denver flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Denver that suits you.

Can I find flights from Idaho to Denver with flexible booking policies on momondo?

All flight searches from Idaho to Denver on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Idaho to Denver?

Once all potential Idaho to Denver flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Idaho to Denver right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Idaho to Denver now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Denver and let you know when they change.

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Fri 3/20
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