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Cheap flights from the United States to Idaho 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 the United States to Idaho departing on 3/5. 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 the United States to Idaho

Recent round-trip flight deals from the United States to Idaho

Enter your travel dates to find the best prices.
Frontier Logo
9:50 am - 11:27 am
DEN
-
GEG
2h 37mnonstop
Frontier Logo
11:32 am - 2:55 pm
GEG
-
DEN
2h 23mnonstop
$79Frontier
Thu, Mar 5 - Thu, Mar 12
Frontier Logo
9:50 am - 11:27 am
DEN
-
GEG
2h 37mnonstop
Frontier Logo
11:32 am - 2:55 pm
GEG
-
DEN
2h 23mnonstop
$107Frontier
Thu, Mar 5 - Thu, Mar 12
Delta Logo
7:15 am - 9:50 am
SEA
-
BOI
1h 35mnonstop
Delta Logo
7:30 am - 8:15 am
BOI
-
SEA
1h 45mnonstop
$137Delta
Tue, Mar 3 - Wed, Mar 11
Alaska Airlines Logo
11:39 am - 2:10 pm
SEA
-
BOI
1h 31mnonstop
Alaska Airlines Logo
4:19 pm - 4:59 pm
BOI
-
SEA
1h 40mnonstop
$142Alaska Airlines
Fri, May 15 - Tue, May 19
Delta Logo
5:50 pm - 8:15 pm
SEA
-
BOI
1h 25mnonstop
Delta Logo
10:35 am - 11:18 am
BOI
-
SEA
1h 43mnonstop
$147Delta
Wed, Mar 4 - Mon, Mar 9
Alaska Airlines Logo
12:55 pm - 3:33 pm
SEA
-
BOI
1h 38mnonstop
Alaska Airlines Logo
6:39 pm - 8:59 pm
BOI
-
SEA
3h 20m
1 stop
$161Alaska Airlines
Wed, Apr 29 - Wed, Apr 29
United Airlines Logo
9:17 am - 12:52 pm
LAX
-
JAC
2h 35mnonstop
United Airlines Logo
4:16 pm - 9:44 pm
JAC
-
LAX
6h 28m
1 stop
$246United Airlines
Mon, Mar 23 - Sat, Mar 28
American Airlines Logo
8:24 am - 11:58 am
LAX
-
JAC
2h 34mnonstop
American Airlines Logo
12:28 pm - 2:11 pm
JAC
-
LAX
2h 43mnonstop
$248American Airlines
Mon, Mar 23 - Sat, Mar 28
American Airlines Logo
9:54 am - 12:49 pm
ORD
-
BOI
3h 55mnonstop
American Airlines Logo
1:29 pm - 6:16 pm
BOI
-
ORD
3h 47mnonstop
$249American Airlines
Sat, May 2 - Tue, May 5
United Airlines Logo
7:00 am - 3:16 pm
LAX
-
JAC
7h 16m
1 stop
United Airlines Logo
3:30 pm - 9:26 pm
JAC
-
LAX
6h 56m
1 stop
$255United Airlines
Mon, Mar 23 - Sat, Mar 28

Southwest flights from United States to Idaho

Our best Southwest deals on United States to Idaho flight tickets
Southwest
Feb 25
SEA11:20 amSeattle/Tacoma Intl
9h 55m
1 stop
BOI10:15 pmBoise Air Term. Gowen Fld
Mar 4
BOI5:25 pmBoise Air Term. Gowen Fld
5h 25m
1 stop
SEA9:50 pmSeattle/Tacoma Intl
$162
Southwest
Feb 28
SEA6:35 amSeattle/Tacoma Intl
4h 40m
1 stop
BOI12:15 pmBoise Air Term. Gowen Fld
Mar 1
BOI10:55 amBoise Air Term. Gowen Fld
12h 00m
1 stop
SEA9:55 pmSeattle/Tacoma Intl
$172
Southwest
Feb 22
SEA5:50 amSeattle/Tacoma Intl
4h 05m
1 stop
BOI10:55 amBoise Air Term. Gowen Fld
Mar 1
BOI10:55 amBoise Air Term. Gowen Fld
12h 00m
1 stop
SEA9:55 pmSeattle/Tacoma Intl
$182

United Airlines flights from United States to Idaho

Our best United Airlines deals on United States to Idaho flight tickets
United Airlines
Apr 23
SEA7:12 amSeattle/Tacoma Intl
7h 12m
1 stop
BOI3:24 pmBoise Air Term. Gowen Fld
Apr 24
BOI7:03 pmBoise Air Term. Gowen Fld
5h 27m
1 stop
SEA11:30 pmSeattle/Tacoma Intl
$223
United Airlines
Mar 6
SEA5:20 pmSeattle/Tacoma Intl
5h 37m
1 stop
BOI11:57 pmBoise Air Term. Gowen Fld
Mar 7
BOI12:59 pmBoise Air Term. Gowen Fld
6h 31m
1 stop
SEA6:30 pmSeattle/Tacoma Intl
$224
United Airlines
Mar 23
LAX9:17 amLos Angeles
2h 35m
JAC12:52 pmJackson Hole
Mar 28
JAC4:16 pmJackson Hole
6h 28m
1 stop
LAX9:44 pmLos Angeles
$246

momondo Fare Finder

 
Customize your flight search to find flights from United States 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 February 5, 2026.
Use the filters below to find and compare flights from the United States to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 3/5

9:50 am-11:27 am

Nonstop2h 37m

Spokane

Thu 3/12

11:32 am-2:55 pm

Nonstop2h 23m

$79

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 3/5

9:50 am-11:27 am

Nonstop2h 37m

Spokane

Thu 3/12

11:32 am-2:55 pm

Nonstop2h 23m

$107

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Tue 3/3

7:15 am-9:50 am

Nonstop1h 35m

Boise Air Term. Gowen Fld

Wed 3/11

7:30 am-8:15 am

Nonstop1h 45m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 5/15

11:39 am-2:10 pm

Nonstop1h 31m

Boise Air Term. Gowen Fld

Tue 5/19

4:19 pm-4:59 pm

Nonstop1h 40m

$142

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 3/4

5:50 pm-8:15 pm

Nonstop1h 25m

Boise Air Term. Gowen Fld

Mon 3/9

10:35 am-11:18 am

Nonstop1h 43m

$147

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 4/29

12:55 pm-3:33 pm

Nonstop1h 38m

Boise Air Term. Gowen Fld

Wed 4/29

6:39 pm-8:59 pm

1 stop3h 20m

$161

Los AngelesJackson

LAX - JAC

LAXJAC

Los Angeles

Mon 3/23

9:17 am-12:52 pm

Nonstop2h 35m

Jackson Hole

Sat 3/28

4:16 pm-9:44 pm

1 stop6h 28m

$246

Los AngelesJackson

LAX - JAC

LAXJAC

Los Angeles

Mon 3/23

8:24 am-11:58 am

Nonstop2h 34m

Jackson Hole

Sat 3/28

12:28 pm-2:11 pm

Nonstop2h 43m

$248

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Sat 5/2

9:54 am-12:49 pm

Nonstop3h 55m

Boise Air Term. Gowen Fld

Tue 5/5

1:29 pm-6:16 pm

Nonstop3h 47m

$249

Los AngelesJackson

LAX - JAC

LAXJAC

Los Angeles

Mon 3/23

7:00 am-3:16 pm

1 stop7h 16m

Jackson Hole

Sat 3/28

3:30 pm-9:26 pm

1 stop6h 56m

$255

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 United States 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, October is the cheapest month to fly from United States to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $319. If you don’t want to visit Idaho in October, then you should wait until January to fly from United States, when ticket prices are also cheap, with an average price of $321.

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

Our data shows that Saturday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $257. On the other hand, Sunday is the most expensive day to depart from United States because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $334.

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 afternoon. momondo users have found flights departing from United States to Idaho in the afternoon for as low as $227. 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 morning is when there is more demand to fly to Idaho, so prices are often more expensive at around $294 per ticket.

What is the cheapest United States to Idaho flight route?

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

What cabin class options are available on United States to Idaho flights?

There are 4 cabin classes available to choose from on United States 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 United States to Idaho flights?

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

Cheap United States to Idaho flight deals and tips

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

Best Price Found

$60

Fastest flight time

0h 28m

Direct flights

Every day

Airports in Idaho

27 airports
The best one-way flight to Idaho from United States in the past 72 hours is $60. The best round-trip flight deal from United States to Idaho found on momondo in the last 72 hours is $117.
The fastest flight from United States to Idaho takes 0h 28m
Direct flights go from United States to Idaho every day.
There are 27 airports in Idaho. From United States there are direct flights to Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Jackson Hole (JAC).
Search flight deals

  • When did momondo last update prices for flights from United States to Idaho?

    Prices for flights from United States to Idaho refresh daily.

  • How many operators does momondo search for flights from United States to Idaho?

  • How old do you have to be to fly from United States 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 United States to Idaho.

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

    The travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from United States to Idaho

Compare and see reviews for airlines that fly from United States to Idaho with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $40Free CancellationRating
7.2
709 reviews
Search Allegiant Air flights
Spirit AirlinesPriceFrom $42Free CancellationRating
6.3
8,419 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $50Free CancellationRating
8.0
11,843 reviews
Search Alaska Airlines flights
FrontierPriceFrom $54Free CancellationRating
5.7
3,053 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $65Free CancellationRating
7.8
2,831 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $97Free CancellationRating
7.9
8,156 reviews
Search Delta flights
United AirlinesPriceFrom $132Free CancellationRating
7.4
9,241 reviews
Search United Airlines flights
SouthwestPriceFrom $142Free CancellationRating
8.0
4,278 reviews
Search Southwest flights
American AirlinesPriceFrom $216Free CancellationRating
7.2
11,242 reviews
Search American Airlines flights

Why use momondo?

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

It is quick and easy to find United States to Idaho 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 Idaho that suits you.

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

Yes. momondo enables you to select and highlight flights to Idaho from United States with this policy.

How can momondo help me find flights from United States to Idaho?

Once you have performed a search for United States to Idaho flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from United States 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 United States and alert you when they change.

An easier way to manage your Idaho trip

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