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Cheap flights from Denver to Idaho from $48

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Idaho departing on 4/2. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Denver to Idaho

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
Frontier Logo
12:03 pm - 2:06 pm
BOI
-
DEN
2h 03mnonstop
$107Frontier
Thu, Apr 2 - Sun, Apr 5
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
Frontier Logo
12:03 pm - 2:06 pm
BOI
-
DEN
2h 03mnonstop
$108Frontier
Thu, Apr 2 - Thu, Apr 9
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
Frontier Logo
11:53 am - 1:56 pm
BOI
-
DEN
2h 03mnonstop
$117Frontier
Thu, Apr 16 - Sun, Apr 19
Delta Logo
7:45 pm - 12:20 am
DEN
-
GEG
5h 35m
1 stop
Delta Logo
6:15 am - 12:17 pm
GEG
-
DEN
5h 02m
1 stop
$165Delta
Thu, Apr 16 - Sun, Apr 19
Delta Logo
5:30 am - 12:27 pm
DEN
-
GEG
7h 57m
2 stops
Delta Logo
6:15 am - 12:17 pm
GEG
-
DEN
5h 02m
1 stop
$170Delta
Fri, Apr 17 - Sun, Apr 19
United Airlines Logo
8:10 am - 9:53 am
DEN
-
IDA
1h 43mnonstop
United Airlines Logo
5:20 pm - 7:10 pm
IDA
-
DEN
1h 50mnonstop
$209United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
8:05 am - 9:50 am
DEN
-
IDA
1h 45mnonstop
United Airlines Logo
5:54 pm - 7:45 pm
IDA
-
DEN
1h 51mnonstop
$219United Airlines
Thu, May 21 - Mon, May 25
Multiple Airlines Logo
10:30 pm - 3:27 pm
DEN
-
IDA
16h 57m
1 stop
Multiple Airlines Logo
10:21 pm - 3:59 am
IDA
-
DEN
5h 38m
1 stop
$252Multiple Airlines
Thu, Apr 9 - Mon, Apr 13
Multiple Airlines Logo
10:00 am - 4:08 pm
DEN
-
IDA
6h 08m
1 stop
Multiple Airlines Logo
10:56 pm - 9:33 am
IDA
-
DEN
10h 37m
1 stop
$259Multiple Airlines
Fri, Jun 12 - Mon, Jun 15
Alaska Airlines Logo
7:24 pm - 11:18 am
DEN
-
SUN
15h 54m
1 stop
Alaska Airlines Logo
12:00 pm - 11:56 pm
SUN
-
DEN
11h 56m
1 stop
$269Alaska Airlines
Fri, Apr 3 - Mon, Apr 6

Frontier flights from Denver to Idaho

Our best Frontier deals on Denver to Idaho flight tickets
Frontier
Apr 2
DEN9:10 amDenver Intl
1h 58m
BOI11:08 amBoise Air Term. Gowen Fld
Apr 5
BOI12:03 pmBoise Air Term. Gowen Fld
2h 03m
DEN2:06 pmDenver Intl
$107
Frontier
Apr 2
DEN9:10 amDenver Intl
1h 58m
BOI11:08 amBoise Air Term. Gowen Fld
Apr 9
BOI12:03 pmBoise Air Term. Gowen Fld
2h 03m
DEN2:06 pmDenver Intl
$108
Frontier
Apr 16
DEN9:10 amDenver Intl
1h 58m
BOI11:08 amBoise Air Term. Gowen Fld
Apr 19
BOI11:53 amBoise Air Term. Gowen Fld
2h 03m
DEN1:56 pmDenver Intl
$117

United Airlines flights from Denver to Idaho

Our best United Airlines deals on Denver to Idaho flight tickets
United Airlines
Apr 14
DEN8:10 amDenver Intl
1h 43m
IDA9:53 amIdaho Falls Fanning Field
Apr 21
IDA5:20 pmIdaho Falls Fanning Field
1h 50m
DEN7:10 pmDenver Intl
$209
United Airlines
May 21
DEN8:05 amDenver Intl
1h 45m
IDA9:50 amIdaho Falls Fanning Field
May 25
IDA5:54 pmIdaho Falls Fanning Field
1h 51m
DEN7:45 pmDenver Intl
$219
United Airlines
Mar 27
DEN11:45 amDenver Intl
1h 45m
IDA1:30 pmIdaho Falls Fanning Field
Mar 29
IDA2:30 pmIdaho Falls Fanning Field
1h 47m
DEN4:17 pmDenver Intl
$224

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Idaho 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 March 10, 2026.
Use the filters below to find and compare flights from Denver to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 4/2

9:10 am-11:08 am

Nonstop1h 58m

Boise Air Term. Gowen Fld

Sun 4/5

12:03 pm-2:06 pm

Nonstop2h 03m

$107

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 4/2

9:10 am-11:08 am

Nonstop1h 58m

Boise Air Term. Gowen Fld

Thu 4/9

12:03 pm-2:06 pm

Nonstop2h 03m

$108

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 4/16

9:10 am-11:08 am

Nonstop1h 58m

Boise Air Term. Gowen Fld

Sun 4/19

11:53 am-1:56 pm

Nonstop2h 03m

$117

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 4/16

7:45 pm-12:20 am

1 stop5h 35m

Spokane

Sun 4/19

6:15 am-12:17 pm

1 stop5h 02m

$165

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Fri 4/17

5:30 am-12:27 pm

2 stops7h 57m

Spokane

Sun 4/19

6:15 am-12:17 pm

1 stop5h 02m

$170
Quickest round-trip

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Tue 4/14

8:10 am-9:53 am

Nonstop1h 43m

Idaho Falls Fanning Field

Tue 4/21

5:20 pm-7:10 pm

Nonstop1h 50m

$209

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 5/21

8:05 am-9:50 am

Nonstop1h 45m

Idaho Falls Fanning Field

Mon 5/25

5:54 pm-7:45 pm

Nonstop1h 51m

$219

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 4/9

10:30 pm-3:27 pm

1 stop16h 57m

Idaho Falls Fanning Field

Mon 4/13

10:21 pm-3:59 am

1 stop5h 38m

$252

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Fri 6/12

10:00 am-4:08 pm

1 stop6h 08m

Idaho Falls Fanning Field

Mon 6/15

10:56 pm-9:33 am

1 stop10h 37m

$259

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Fri 4/3

7:24 pm-11:18 am

1 stop15h 54m

Hailey Sun Valley-Friedman

Mon 4/6

12:00 pm-11:56 pm

1 stop11h 56m

$269

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 Idaho from

How to get the cheapest flight ticket from Denver to Idaho

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 Idaho?

In general, February is the cheapest month to fly from Denver to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $130. If you don’t want to visit Idaho in February, then you should wait until September to fly from Denver, when ticket prices are also cheap, with an average price of $163.

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

Our data shows that Thursday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $165. On the other hand, Monday is the most expensive day to depart from Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $323.

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

According to our data, the cheapest time of day to fly to Idaho is in the morning. momondo users have found flights departing from Denver to Idaho in the morning for as low as $208. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Idaho, so prices are often more expensive at around $316 per ticket.

What is the cheapest Denver Intl to Idaho flight route?

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

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

You are more likely to see cheaper flights to Idaho from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $225 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Denver for as low as $171 on momondo.

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

There are 4 cabin classes available to choose from on Denver Intl to Idaho 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 Denver to Idaho flights?

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

Cheap Denver to Idaho flight deals and tips

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

Best Price Found

$138

Fastest flight time

1h 27m

Direct flights

Every day

Airports in Idaho

27 airports
The best one-way flight to Idaho from Denver in the past 72 hours is $138. The best round-trip flight deal from Denver to Idaho found on momondo in the last 72 hours is $108.
The fastest flight from Denver to Idaho takes 1h 27m
Direct flights go from Denver to Idaho every day.
There are 27 airports in Idaho. From Denver there are direct flights to West Yellowstone (WYS), Idaho Falls Fanning Field (IDA), Jackson Hole (JAC), Boise Air Term. Gowen Fld (BOI).
Search flight deals

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

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

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

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

    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 Denver Intl Airport to Idaho.

  • What documentation or ID do you need to fly to Idaho?

    The travel and health documents you'll need for your trip to Idaho 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 Idaho. 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 Denver to Idaho?

Best airlines flying from Denver to Idaho

Compare and see reviews for airlines that fly from Denver to Idaho with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $40Free CancellationRating
7.3
714 reviews
Search Allegiant Air flights
FrontierPriceFrom $54Free CancellationRating
5.7
3,033 reviews
Search Frontier flights
DeltaPriceFrom $68Free CancellationRating
7.9
8,277 reviews
Search Delta flights
United AirlinesPriceFrom $157Free CancellationRating
7.4
9,413 reviews
Search United Airlines flights
SouthwestPriceFrom $197Free CancellationRating
8.0
4,317 reviews
Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Denver to Idaho. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Denver to Idaho flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Idaho from Denver. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Idaho, momondo offers a useful price alert feature which will track prices for flights to Idaho from Denver and alert you when they change.

An easier way to manage your Idaho trip

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