Cheap flights from Idaho to the United States from $66

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 the United States departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
1:33 pm - 3:49 pm
BOI
-
DEN
2h 16mnonstop
Frontier Logo
10:33 am - 12:38 pm
DEN
-
BOI
2h 05mnonstop
$171Frontier
Thu, Jun 4 - Sun, Jun 7
Frontier Logo
12:59 pm - 3:00 pm
BOI
-
DEN
2h 01mnonstop
Frontier Logo
9:55 am - 12:04 pm
DEN
-
BOI
2h 09mnonstop
$174Frontier
Tue, Sep 15 - Thu, Sep 17
Delta Logo
6:25 am - 9:15 am
GEG
-
LAX
2h 50mnonstop
Delta Logo
9:25 pm - 12:05 am
LAX
-
GEG
2h 40mnonstop
$177Delta
Fri, Jun 5 - Tue, Jun 9
Alaska Airlines Logo
8:51 pm - 9:29 pm
BOI
-
SEA
1h 38mnonstop
Alaska Airlines Logo
1:04 pm - 3:34 pm
SEA
-
BOI
1h 30mnonstop
$177Alaska Airlines
Sat, May 30 - Wed, Jun 3
Southwest Logo
2:40 pm - 10:00 pm
GEG
-
LAX
7h 20m
2 stops
Southwest Logo
5:35 am - 10:35 am
LAX
-
GEG
5h 00m
1 stop
$182Southwest
Tue, Jun 2 - Sat, Jun 6
Delta Logo
6:00 pm - 6:42 pm
BOI
-
SEA
1h 42mnonstop
Delta Logo
7:15 am - 9:54 am
SEA
-
BOI
1h 39mnonstop
$187Delta
Sat, May 30 - Sun, May 31
Alaska Airlines Logo
7:33 pm - 8:57 pm
BOI
-
LAX
2h 24mnonstop
Alaska Airlines Logo
7:00 am - 10:20 am
LAX
-
BOI
2h 20mnonstop
$187Alaska Airlines
Fri, Jun 5 - Sat, Jun 6
Southwest Logo
4:00 pm - 11:05 pm
GEG
-
LAX
7h 05m
1 stop
Southwest Logo
3:40 pm - 10:40 pm
LAX
-
GEG
7h 00m
1 stop
$192Southwest
Sat, Jun 6 - Wed, Jun 10
Multiple Airlines Logo
6:07 pm - 11:59 pm
BOI
-
DEN
5h 52m
1 stop
Multiple Airlines Logo
10:29 am - 12:30 pm
DEN
-
BOI
2h 01mnonstop
$194Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
1:25 pm - 11:29 pm
BOI
-
LAS
11h 04m
1 stop
Multiple Airlines Logo
5:52 pm - 8:43 pm
LAS
-
BOI
1h 51mnonstop
$209Multiple Airlines
Tue, Jun 16 - Tue, Jun 30

Southwest flights from Idaho to United States

Our best Southwest deals on Idaho to United States flight tickets
Southwest
Jun 2
GEG2:40 pmSpokane
7h 20m
2 stops
LAX10:00 pmLos Angeles
Jun 6
LAX5:35 amLos Angeles
5h 00m
1 stop
GEG10:35 amSpokane
$182
Southwest
Jun 6
GEG4:00 pmSpokane
7h 05m
1 stop
LAX11:05 pmLos Angeles
Jun 10
LAX3:40 pmLos Angeles
7h 00m
1 stop
GEG10:40 pmSpokane
$192
Southwest
Jun 2
BOI5:00 pmBoise Air Term. Gowen Fld
4h 50m
1 stop
LAX8:50 pmLos Angeles
Jun 6
LAX5:35 amLos Angeles
4h 55m
1 stop
BOI11:30 amBoise Air Term. Gowen Fld
$197

United Airlines flights from Idaho to United States

Our best United Airlines deals on Idaho to United States flight tickets
United Airlines
Jun 2
GEG12:37 pmSpokane
5h 14m
1 stop
LAX5:51 pmLos Angeles
Jun 5
LAX6:45 pmLos Angeles
4h 29m
1 stop
GEG11:14 pmSpokane
$212
United Airlines
Jun 5
BOI7:05 pmBoise Air Term. Gowen Fld
4h 32m
1 stop
LAX10:37 pmLos Angeles
Jun 6
LAX6:57 pmLos Angeles
2h 08m
BOI10:05 pmBoise Air Term. Gowen Fld
$218
United Airlines
Jun 4
BOI7:00 amBoise Air Term. Gowen Fld
2h 33m
LAX8:33 amLos Angeles
Jun 6
LAX6:57 pmLos Angeles
2h 08m
BOI10:05 pmBoise Air Term. Gowen Fld
$226

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to United States 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 May 13, 2026.
Use the filters below to find and compare flights from Idaho to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 6/4

1:33 pm-3:49 pm

Nonstop2h 16m

Denver Intl

Sun 6/7

10:33 am-12:38 pm

Nonstop2h 05m

$171

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 9/15

12:59 pm-3:00 pm

Nonstop2h 01m

Denver Intl

Thu 9/17

9:55 am-12:04 pm

Nonstop2h 09m

$174

SpokaneLos Angeles

GEG - LAX

GEGLAX

Spokane

Fri 6/5

6:25 am-9:15 am

Nonstop2h 50m

Los Angeles

Tue 6/9

9:25 pm-12:05 am

Nonstop2h 40m

$177
Quickest round-trip

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 5/30

8:51 pm-9:29 pm

Nonstop1h 38m

Seattle/Tacoma Intl

Wed 6/3

1:04 pm-3:34 pm

Nonstop1h 30m

$177

SpokaneLos Angeles

GEG - LAX

GEGLAX

Spokane

Tue 6/2

2:40 pm-10:00 pm

2 stops7h 20m

Los Angeles

Sat 6/6

5:35 am-10:35 am

1 stop5h 00m

$182

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 5/30

6:00 pm-6:42 pm

Nonstop1h 42m

Seattle/Tacoma Intl

Sun 5/31

7:15 am-9:54 am

Nonstop1h 39m

$187

BoiseLos Angeles

BOI - LAX

BOILAX

Boise Air Term. Gowen Fld

Fri 6/5

7:33 pm-8:57 pm

Nonstop2h 24m

Los Angeles

Sat 6/6

7:00 am-10:20 am

Nonstop2h 20m

$187

SpokaneLos Angeles

GEG - LAX

GEGLAX

Spokane

Sat 6/6

4:00 pm-11:05 pm

1 stop7h 05m

Los Angeles

Wed 6/10

3:40 pm-10:40 pm

1 stop7h 00m

$192

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 6/2

6:07 pm-11:59 pm

1 stop5h 52m

Denver Intl

Tue 6/9

10:29 am-12:30 pm

Nonstop2h 01m

$194

BoiseLas Vegas

BOI - LAS

BOILAS

Boise Air Term. Gowen Fld

Tue 6/16

1:25 pm-11:29 pm

1 stop11h 04m

Las Vegas Harry Reid Intl

Tue 6/30

5:52 pm-8:43 pm

Nonstop1h 51m

$209

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 the United States from

How to get the cheapest flight ticket from Idaho to United States

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 United States?

In general, August is the cheapest month to fly from Idaho to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $331. If you aren’t able to travel during the month of August, then book flights to United States from Idaho during October instead. Flights to United States in October, while not as cheap as those in August, still average around $335.

What is the cheapest Idaho to United States flight route?

Fly from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl for the best Idaho - United States flight prices

Can stopping save me money on Idaho to United States flights?

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

Cheap Idaho to United States flight deals and tips

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

Best Price Found

$75

Fastest flight time

0h 54m

Direct flights

Every day

Airports in United States

4,297 airports
The best one-way flight to United States from Idaho in the past 72 hours is $75. The best round-trip flight deal from Idaho to United States found on momondo in the last 72 hours is $103.
The fastest flight from Idaho to United States takes 0h 54m
Direct flights go from Idaho to United States every day.
There are 4,297 airports in United States. From Idaho there are direct flights to Denver Intl (DEN), Seattle/Tacoma Intl (SEA), Las Vegas Harry Reid Intl (LAS).

Frequently asked questions about flying from Idaho to the United States

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

    Prices for flights from Idaho to United States are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to United States.

  • What documentation or ID do you need to fly to United States?

    The travel and health documents required for your trip to United States 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 United States. 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 Idaho to United States?

Best airlines flying from Idaho to United States

Compare and see reviews for airlines that fly from Idaho to United States with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $39Free CancellationRating
6.3
8,631 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $63Free CancellationRating
7.8
2,837 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $77Free CancellationRating
7.9
8,450 reviews
Search Delta flights
FrontierPriceFrom $78Free CancellationRating
5.6
2,952 reviews
Search Frontier flights
Allegiant AirPriceFrom $80Free CancellationRating
7.3
708 reviews
Search Allegiant Air flights
Breeze AirwaysPriceFrom $88Free CancellationRating
8.1
284 reviews
Search Breeze Airways flights
Alaska AirlinesPriceFrom $99Free CancellationRating
7.9
12,356 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $123Free CancellationRating
7.4
9,706 reviews
Search United Airlines flights
SouthwestPriceFrom $137Free CancellationRating
7.9
4,296 reviews
Search Southwest flights
JetBluePriceFrom $191Free CancellationRating
7.1
2,973 reviews
Search JetBlue flights

Why use momondo?

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

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

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

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

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

momondo helps you find the best flight between Idaho and United States by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Idaho to United States flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
Fri 6/12
Fri 6/19

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