Cheap flights from Idaho to the United States from $54

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 9/20. 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 Idaho to the United States

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:59 pm - 3:00 pm
BOI
-
DEN
2h 01mnonstop
Frontier Logo
9:55 am - 12:04 pm
DEN
-
BOI
2h 09mnonstop
$172Frontier
Tue, Sep 15 - Thu, Sep 17
Frontier Logo
1:24 pm - 3:30 pm
BOI
-
DEN
2h 06mnonstop
Frontier Logo
10:29 am - 12:29 pm
DEN
-
BOI
2h 00mnonstop
$173Frontier
Tue, Aug 4 - Tue, Aug 11
Frontier Logo
1:24 pm - 3:30 pm
BOI
-
DEN
2h 06mnonstop
Frontier Logo
10:29 am - 12:29 pm
DEN
-
BOI
2h 00mnonstop
$181Frontier
Thu, Jul 30 - Tue, Aug 4
Alaska Airlines Logo
10:14 am - 11:10 am
BOI
-
SFO
1h 56mnonstop
Alaska Airlines Logo
7:46 pm - 10:27 pm
SFO
-
BOI
1h 41mnonstop
$187Alaska Airlines
Tue, Sep 29 - Wed, Sep 30
Multiple Airlines Logo
1:24 pm - 3:30 pm
BOI
-
DEN
2h 06mnonstop
Multiple Airlines Logo
8:40 am - 2:07 pm
DEN
-
BOI
5h 27m
1 stop
$190Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
Alaska Airlines Logo
8:57 am - 9:55 am
BOI
-
SFO
1h 58mnonstop
Alaska Airlines Logo
6:35 pm - 9:20 pm
SFO
-
BOI
1h 45mnonstop
$192Alaska Airlines
Sat, Oct 17 - Mon, Oct 19
Multiple Airlines Logo
1:24 pm - 3:30 pm
BOI
-
DEN
2h 06mnonstop
Multiple Airlines Logo
8:40 am - 3:26 pm
DEN
-
BOI
6h 46m
1 stop
$194Multiple Airlines
Tue, Aug 11 - Wed, Aug 12
Delta Logo
7:05 am - 8:30 am
GEG
-
SEA
1h 25mnonstop
Delta Logo
5:55 pm - 7:15 pm
SEA
-
GEG
1h 20mnonstop
$197Delta
Wed, Sep 16 - Sat, Sep 19
Delta Logo
4:50 pm - 6:14 pm
BOI
-
LAX
2h 24mnonstop
Delta Logo
11:50 am - 3:04 pm
LAX
-
BOI
2h 14mnonstop
$197Delta
Sat, Oct 24 - Tue, Oct 27
United Airlines Logo
7:05 pm - 11:10 pm
BOI
-
LAS
5h 05m
1 stop
United Airlines Logo
2:15 pm - 10:05 pm
LAS
-
BOI
6h 50m
1 stop
$217United Airlines
Tue, Jul 28 - Sat, Aug 1

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Alaska Airlines flights from Idaho to United States

Our best Alaska Airlines deals on Idaho to United States flight tickets
Alaska Airlines
Sep 29
BOI10:14 amBoise Air Term. Gowen Fld
1h 56m
SFO11:10 amSan Francisco
Sep 30
SFO7:46 pmSan Francisco
1h 41m
BOI10:27 pmBoise Air Term. Gowen Fld
$187
Alaska Airlines
Oct 17
BOI8:57 amBoise Air Term. Gowen Fld
1h 58m
SFO9:55 amSan Francisco
Oct 19
SFO6:35 pmSan Francisco
1h 45m
BOI9:20 pmBoise Air Term. Gowen Fld
$192
Alaska Airlines
Aug 20
BOI10:14 amBoise Air Term. Gowen Fld
1h 56m
SFO11:10 amSan Francisco
Aug 23
SFO7:46 pmSan Francisco
1h 41m
BOI10:27 pmBoise Air Term. Gowen Fld
$194

Frontier flights from Idaho to United States

Our best Frontier deals on Idaho to United States flight tickets
Frontier
Sep 15
BOI12:59 pmBoise Air Term. Gowen Fld
2h 01m
DEN3:00 pmDenver Intl
Sep 17
DEN9:55 amDenver Intl
2h 09m
BOI12:04 pmBoise Air Term. Gowen Fld
$172
Frontier
Aug 4
BOI1:24 pmBoise Air Term. Gowen Fld
2h 06m
DEN3:30 pmDenver Intl
Aug 11
DEN10:29 amDenver Intl
2h 00m
BOI12:29 pmBoise Air Term. Gowen Fld
$173
Frontier
Jul 30
BOI1:24 pmBoise Air Term. Gowen Fld
2h 06m
DEN3:30 pmDenver Intl
Aug 4
DEN10:29 amDenver Intl
2h 00m
BOI12:29 pmBoise Air Term. Gowen Fld
$181

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 June 29, 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

Tue 9/15

12:59 pm-3:00 pm

Nonstop2h 01m

Denver Intl

Thu 9/17

9:55 am-12:04 pm

Nonstop2h 09m

$172

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 8/4

1:24 pm-3:30 pm

Nonstop2h 06m

Denver Intl

Tue 8/11

10:29 am-12:29 pm

Nonstop2h 00m

$173

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 7/30

1:24 pm-3:30 pm

Nonstop2h 06m

Denver Intl

Tue 8/4

10:29 am-12:29 pm

Nonstop2h 00m

$181

BoiseSan Francisco

BOI - SFO

BOISFO

Boise Air Term. Gowen Fld

Tue 9/29

10:14 am-11:10 am

Nonstop1h 56m

San Francisco

Wed 9/30

7:46 pm-10:27 pm

Nonstop1h 41m

$187

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 8/4

1:24 pm-3:30 pm

Nonstop2h 06m

Denver Intl

Tue 8/11

8:40 am-2:07 pm

1 stop5h 27m

$190

BoiseSan Francisco

BOI - SFO

BOISFO

Boise Air Term. Gowen Fld

Sat 10/17

8:57 am-9:55 am

Nonstop1h 58m

San Francisco

Mon 10/19

6:35 pm-9:20 pm

Nonstop1h 45m

$192

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 8/11

1:24 pm-3:30 pm

Nonstop2h 06m

Denver Intl

Wed 8/12

8:40 am-3:26 pm

1 stop6h 46m

$194
Quickest round-trip

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Wed 9/16

7:05 am-8:30 am

Nonstop1h 25m

Seattle/Tacoma Intl

Sat 9/19

5:55 pm-7:15 pm

Nonstop1h 20m

$197

BoiseLos Angeles

BOI - LAX

BOILAX

Boise Air Term. Gowen Fld

Sat 10/24

4:50 pm-6:14 pm

Nonstop2h 24m

Los Angeles

Tue 10/27

11:50 am-3:04 pm

Nonstop2h 14m

$197

BoiseLas Vegas

BOI - LAS

BOILAS

Boise Air Term. Gowen Fld

Tue 7/28

7:05 pm-11:10 pm

1 stop5h 05m

Las Vegas Harry Reid Intl

Sat 8/1

2:15 pm-10:05 pm

1 stop6h 50m

$217

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 $344.

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

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

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

$71

Fastest flight time

0h 53m

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 $71. The best round-trip flight deal from Idaho to United States found on momondo in the last 72 hours is $117.
The fastest flight from Idaho to United States takes 0h 53m
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 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
DeltaPriceFrom $68Free CancellationRating
7.8
8,449 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $68Free CancellationRating
7.8
2,826 reviews
Search Hawaiian Airlines flights
FrontierPriceFrom $78Free CancellationRating
5.6
2,855 reviews
Search Frontier flights
Allegiant AirPriceFrom $80Free CancellationRating
7.3
689 reviews
Search Allegiant Air flights
Breeze AirwaysPriceFrom $83Free CancellationRating
8.2
293 reviews
Search Breeze Airways flights
Alaska AirlinesPriceFrom $99Free CancellationRating
7.9
12,590 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $123Free CancellationRating
7.4
9,894 reviews
Search United Airlines flights
SouthwestPriceFrom $143Free CancellationRating
7.9
4,246 reviews
Search Southwest flights
JetBluePriceFrom $191Free CancellationRating
7.1
3,012 reviews
Search JetBlue flights
American AirlinesPriceFrom $228Free CancellationRating
7.1
11,770 reviews
Search American Airlines 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
Wed 7/29
Wed 8/5

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