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 9/1. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from the United States to Idaho

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

Allegiant Air Logo
2:27 pm - 5:02 pmLAX-GEG
2h 35mnonstop
Allegiant Air Logo
9:55 am - 12:34 pmGEG-LAX
2h 39mnonstop
$86Allegiant Air
Find Deal
Mon, Aug 11 - Fri, Aug 15
Allegiant Air Logo
2:27 pm - 5:02 pmLAX-GEG
2h 35mnonstop
Allegiant Air Logo
9:55 am - 12:34 pmGEG-LAX
2h 39mnonstop
$90Allegiant Air
Find Deal
Mon, Aug 11 - Fri, Aug 15
Delta Logo
6:59 pm - 9:26 pmLAX-GEG
2h 27mnonstop
Delta Logo
7:10 am - 10:08 amGEG-LAX
2h 58mnonstop
$137Delta
Find Deal
Wed, Sep 3 - Tue, Sep 9
Alaska Airlines Logo
8:21 pm - 11:43 pmSAN-BOI
2h 22mnonstop
Alaska Airlines Logo
7:07 am - 8:30 amBOI-SAN
2h 23mnonstop
$137Alaska Airlines
Find Deal
Thu, Sep 18 - Sun, Sep 21
Alaska Airlines Logo
7:50 pm - 10:25 pmLAX-GEG
2h 35mnonstop
Alaska Airlines Logo
7:00 am - 9:53 amGEG-LAX
2h 53mnonstop
$144Alaska Airlines
Find Deal
Sat, Sep 20 - Mon, Oct 6
Delta Logo
6:59 pm - 9:31 pmLAX-GEG
2h 32mnonstop
Delta Logo
6:52 am - 9:45 amGEG-LAX
2h 53mnonstop
$157Delta
Find Deal
Fri, Sep 19 - Sun, Sep 21
American Airlines Logo
1:15 pm - 3:28 pmORD-JAC
3h 13mnonstop
American Airlines Logo
3:24 pm - 7:39 pmJAC-ORD
3h 15mnonstop
$190American Airlines
Find Deal
Mon, Sep 8 - Wed, Sep 17
American Airlines Logo
1:15 pm - 3:28 pmORD-JAC
3h 13mnonstop
American Airlines Logo
3:19 pm - 7:34 pmJAC-ORD
3h 15mnonstop
$191American Airlines
Find Deal
Mon, Sep 8 - Thu, Sep 11
United Airlines Logo
7:45 am - 9:42 amDEN-BOI
1h 57mnonstop
United Airlines Logo
5:00 am - 7:05 amBOI-DEN
2h 05mnonstop
$199United Airlines
Find Deal
Wed, Aug 20 - Wed, Aug 27
United Airlines Logo
4:20 pm - 6:32 pmORD-JAC
3h 12mnonstop
United Airlines Logo
4:20 pm - 11:59 pmJAC-ORD
6h 39m1 stop
$201United Airlines
Find Deal
Mon, Sep 8 - Thu, Sep 11

Spirit Airlines flights from United States to Idaho

Our best Spirit Airlines deals on United States to Idaho flight tickets
Spirit Airlines
Aug 18
LAX6:45 amLos Angeles
9h 26m
1 stop
BOI5:11 pmBoise Air Term. Gowen Fld
Aug 25
BOI6:06 pmBoise Air Term. Gowen Fld
6h 52m
1 stop
LAX11:58 pmLos Angeles
Spirit Airlines
Sep 13
LAX6:15 amLos Angeles
6h 06m
1 stop
BOI1:21 pmBoise Air Term. Gowen Fld
Sep 20
BOI2:16 pmBoise Air Term. Gowen Fld
5h 39m
1 stop
LAX6:55 pmLos Angeles
Spirit Airlines
Sep 18
SAN6:15 amSan Diego
6h 06m
1 stop
BOI1:21 pmBoise Air Term. Gowen Fld
Sep 21
BOI2:16 pmBoise Air Term. Gowen Fld
10h 08m
1 stop
SAN11:24 pmSan Diego

Southwest flights from United States to Idaho

Our best Southwest deals on United States to Idaho flight tickets
Southwest
Nov 14
SAN4:15 pmSan Diego
7h 20m
1 stop
BOI12:35 amBoise Air Term. Gowen Fld
Nov 16
BOI5:00 amBoise Air Term. Gowen Fld
5h 15m
1 stop
SAN9:15 amSan Diego
Southwest
Aug 21
SAN4:35 pmSan Diego
6h 30m
1 stop
BOI12:05 amBoise Air Term. Gowen Fld
Aug 25
BOI5:00 amBoise Air Term. Gowen Fld
7h 35m
2 stops
SAN11:35 amSan Diego
Southwest
Aug 19
DEN9:10 pmDenver Intl
1h 55m
BOI11:05 pmBoise Air Term. Gowen Fld
Aug 26
BOI3:45 pmBoise Air Term. Gowen Fld
6h 45m
1 stop
DEN10:30 pmDenver Intl

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 July 31, 2025.
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

Los AngelesSpokane

LAX - GEG

LAXGEG

Los Angeles

Mon 8/11

2:27 pm-5:02 pm

Nonstop2h 35m

Spokane

Fri 8/15

9:55 am-12:34 pm

Nonstop2h 39m

$86

Los AngelesSpokane

LAX - GEG

LAXGEG

Los Angeles

Mon 8/11

2:27 pm-5:02 pm

Nonstop2h 35m

Spokane

Fri 8/15

9:55 am-12:34 pm

Nonstop2h 39m

$90

Los AngelesSpokane

LAX - GEG

LAXGEG

Los Angeles

Wed 9/3

6:59 pm-9:26 pm

Nonstop2h 27m

Spokane

Tue 9/9

7:10 am-10:08 am

Nonstop2h 58m

$137

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Thu 9/18

8:21 pm-11:43 pm

Nonstop2h 22m

Boise Air Term. Gowen Fld

Sun 9/21

7:07 am-8:30 am

Nonstop2h 23m

$137

Los AngelesSpokane

LAX - GEG

LAXGEG

Los Angeles

Sat 9/20

7:50 pm-10:25 pm

Nonstop2h 35m

Spokane

Mon 10/6

7:00 am-9:53 am

Nonstop2h 53m

$144

Los AngelesSpokane

LAX - GEG

LAXGEG

Los Angeles

Fri 9/19

6:59 pm-9:31 pm

Nonstop2h 32m

Spokane

Sun 9/21

6:52 am-9:45 am

Nonstop2h 53m

$157

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Mon 9/8

1:15 pm-3:28 pm

Nonstop3h 13m

Jackson Hole

Wed 9/17

3:24 pm-7:39 pm

Nonstop3h 15m

$190

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Mon 9/8

1:15 pm-3:28 pm

Nonstop3h 13m

Jackson Hole

Thu 9/11

3:19 pm-7:34 pm

Nonstop3h 15m

$191

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Wed 8/20

7:45 am-9:42 am

Nonstop1h 57m

Boise Air Term. Gowen Fld

Wed 8/27

5:00 am-7:05 am

Nonstop2h 05m

$199

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Mon 9/8

4:20 pm-6:32 pm

Nonstop3h 12m

Jackson Hole

Thu 9/11

4:20 pm-11:59 pm

1 stop6h 39m

$201

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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, January 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 $352. If you don’t want to visit Idaho in January, then you should wait until May to fly from United States, when ticket prices are also cheap, with an average price of $369.

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 $265. On the other hand, Monday 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 $325.

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 at noon. momondo users have found flights departing from United States to Idaho at noon for as low as $177. 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 $293 per ticket.

What is the cheapest United States to Idaho flight route?

Fly from Las Vegas Harry Reid 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

$39

Fastest flight time

1h 35m

Direct flights

Every day

Airports in Idaho

4 airports
The best one-way flight to Idaho from United States in the past 72 hours is $39. The best round-trip flight deal from United States to Idaho found on momondo in the last 72 hours is $86.
The fastest flight from United States to Idaho takes 1h 35m
Direct flights go from United States to Idaho every day.
There are 4 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Jackson Hole (JAC)

  • 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 $44Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
Spirit AirlinesPriceFrom $47Free CancellationRating
6.3
8,048 reviews
Search Spirit Airlines flights
Avelo AirlinesPriceFrom $64Free CancellationRating
7.5
78 reviews
Search Avelo Airlines flights
FrontierPriceFrom $73Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $78Free CancellationRating
7.8
2,611 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $98Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Alaska AirlinesPriceFrom $137Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $147Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $154Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
American AirlinesPriceFrom $198Free CancellationRating
7.2
10,000 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/5
Tue 8/12

Find better results for your trip to Idaho

Popular cities in Idaho

Popular flights according to clicks in the last 7 days on momondo