What is the cheapest airline that flies from Idaho to United States?

Frontier, Allegiant Air, and Alaska Airlines are the most popular carriers operating from Idaho to United States

What airlines fly to United States?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to United States from Idaho according to our data. United Airlines is the first choice among our users, with 34% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 9 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

How many flights depart from Idaho to United States on average per day?

As of November 2025, there are 162 flights per day flying from Idaho to United States. The most common time of day flights depart is 2:00PM, with 44% of flights taking off at noon.

How many flights depart from Idaho to United States on average per week?

As of November 2025, 1,139 flights take off from Idaho and land in United States each week. The most common flight departure day for this route is Fri, with 20% of weekly flights taking off on this day.

How long is the flight from Idaho to United States?

Flight times vary depending on what airport in Idaho you fly out of and what airport in United States you fly into. For example, flying from Boise to Los Angeles takes 2h 19m on average. On the other hand, flying from Hailey to Los Angeles takes 2h 30m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

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?

As of November 2025, there are 9 operators available to choose from 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.

$28 Cheap Flights from Idaho to the United States in 2025/26

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Find the cheapest flights from Idaho to the United States

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:35 pm - 5:00 pmGEG-SEA

1h 25mnonstop

9:35 pm - 10:52 pmSEA-GEG

1h 17mnonstop

$89Delta

Find Deal

Tue, Dec 16 - Mon, Jan 12

9:05 am - 10:28 amGEG-SEA

1h 23mnonstop

9:59 am - 11:12 amSEA-GEG

1h 13mnonstop

$90Hawaiian Airlines

Find Deal

Thu, Jan 8 - Sun, Jan 11

6:00 pm - 7:17 pmGEG-SEA

1h 17mnonstop

9:52 pm - 11:04 pmSEA-GEG

1h 12mnonstop

$93Hawaiian Airlines

Find Deal

Sun, Jan 18 - Tue, Jan 27

9:05 am - 10:28 amGEG-SEA

1h 23mnonstop

9:59 am - 11:12 amSEA-GEG

1h 13mnonstop

$98Alaska Airlines

Find Deal

Thu, Jan 8 - Sun, Jan 11

6:08 am - 7:00 amBOI-SEA

1h 52mnonstop

8:51 am - 11:13 amSEA-BOI

1h 22mnonstop

$99Alaska Airlines

Find Deal

Mon, Dec 22 - Wed, Dec 31

12:54 pm - 2:55 pmBOI-DEN

2h 01mnonstop

9:10 am - 11:17 amDEN-BOI

2h 07mnonstop

$100Frontier

Find Deal

Sat, Jan 3 - Fri, Jan 9

12:08 pm - 3:50 pmGEG-DEN

2h 42mnonstop

9:42 am - 11:13 amDEN-GEG

2h 31mnonstop

$104Frontier

Find Deal

Thu, Dec 11 - Sun, Dec 14

9:05 am - 11:35 pmGEG-DEN

13h 30m1 stop

9:31 am - 11:08 amDEN-GEG

2h 37mnonstop

$106Multiple Airlines

Find Deal

Wed, Feb 4 - Sun, Feb 8

8:58 pm - 11:18 pmGEG-LAS

2h 20mnonstop

5:31 pm - 8:08 pmLAS-GEG

2h 37mnonstop

$111Allegiant Air

Find Deal

Sun, Jan 11 - Sun, Jan 18

12:23 pm - 4:05 pmGEG-DEN

2h 42mnonstop

7:00 am - 11:06 amDEN-GEG

5h 06m1 stop

$111Multiple Airlines

Find Deal

Sun, Feb 22 - Wed, Feb 25

United Airlines flights from Idaho to United States

Our best United Airlines deals on Idaho to United States flight tickets

United Airlines

Dec 11

BOI1:50 pmBoise Air Term. Gowen Fld

2h 24m

LAX3:14 pmLos Angeles

Dec 15

LAX6:52 pmLos Angeles

3h 52m

1 stop

BOI11:44 pmBoise Air Term. Gowen Fld

$207

Find similar

United Airlines

Dec 5

BOI1:50 pmBoise Air Term. Gowen Fld

2h 24m

LAX3:14 pmLos Angeles

Dec 8

LAX10:20 amLos Angeles

2h 15m

BOI1:35 pmBoise Air Term. Gowen Fld

$262

Find similar

United Airlines

Dec 5

BOI5:25 pmBoise Air Term. Gowen Fld

2h 07m

DEN7:32 pmDenver Intl

Dec 8

DEN7:45 amDenver Intl

2h 14m

BOI9:59 amBoise Air Term. Gowen Fld

$277

Find similar

Southwest flights from Idaho to United States

Our best Southwest deals on Idaho to United States flight tickets

Southwest

Jan 8

GEG12:10 pmSpokane

2h 15m

DEN3:25 pmDenver Intl

Jan 11

DEN8:20 amDenver Intl

2h 30m

GEG9:50 amSpokane

$117

Find similar

Southwest

Dec 14

BOI6:00 amBoise Air Term. Gowen Fld

1h 55m

LAS6:55 amLas Vegas Harry Reid Intl

Dec 17

LAS7:00 amLas Vegas Harry Reid Intl

5h 30m

1 stop

BOI1:30 pmBoise Air Term. Gowen Fld

$147

Find similar

Southwest

Dec 11

BOI6:10 amBoise Air Term. Gowen Fld

6h 45m

1 stop

SEA11:55 amSeattle/Tacoma Intl

Dec 16

SEA12:10 pmSeattle/Tacoma Intl

7h 30m

1 stop

BOI8:40 pmBoise Air Term. Gowen Fld

$151

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Tue 12/16

3:35 pm-5:00 pm

Nonstop1h 25m

Seattle/Tacoma Intl

Mon 1/12

9:35 pm-10:52 pm

Nonstop1h 17m

$89

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Thu 1/8

9:05 am-10:28 am

Nonstop1h 23m

Seattle/Tacoma Intl

Sun 1/11

9:59 am-11:12 am

Nonstop1h 13m

$90

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Sun 1/18

6:00 pm-7:17 pm

Nonstop1h 17m

Seattle/Tacoma Intl

Tue 1/27

9:52 pm-11:04 pm

Nonstop1h 12m

$93

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Thu 1/8

9:05 am-10:28 am

Nonstop1h 23m

Seattle/Tacoma Intl

Sun 1/11

9:59 am-11:12 am

Nonstop1h 13m

$98

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Mon 12/22

6:08 am-7:00 am

Nonstop1h 52m

Seattle/Tacoma Intl

Wed 12/31

8:51 am-11:13 am

Nonstop1h 22m

$99

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Sat 1/3

12:54 pm-2:55 pm

Nonstop2h 01m

Denver Intl

Fri 1/9

9:10 am-11:17 am

Nonstop2h 07m

$100

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 12/11

12:08 pm-3:50 pm

Nonstop2h 42m

Denver Intl

Sun 12/14

9:42 am-11:13 am

Nonstop2h 31m

$104

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Wed 2/4

9:05 am-11:35 pm

1 stop13h 30m

Denver Intl

Sun 2/8

9:31 am-11:08 am

Nonstop2h 37m

$106

SpokaneLas Vegas

GEG - LAS

GEGLAS

Spokane

Sun 1/11

8:58 pm-11:18 pm

Nonstop2h 20m

Las Vegas Harry Reid Intl

Sun 1/18

5:31 pm-8:08 pm

Nonstop2h 37m

$111

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Sun 2/22

12:23 pm-4:05 pm

Nonstop2h 42m

Denver Intl

Wed 2/25

7:00 am-11:06 am

1 stop5h 06m

$111

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to United States?

In general, April 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 $328. If you aren’t able to travel during the month of April, then book flights to United States from Idaho during October instead. Flights to United States in October, while not as cheap as those in April, still average around $333.

What is the cheapest day to depart on your flight to United States?

According to our data, Wednesday is the cheapest day to fly to United States from Idaho. The lowest ticket price found for a Wednesday departure recently was $391. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $551. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

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

The cheapest time of day to fly to United States is at noon when flights can be purchased for as low as $414. Try not to purchase tickets in the morning because they tend to be around $503. Of course, these prices can vary depending on the time of year and what airport you fly to.

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	$65
Fastest flight time	1h 06m
Direct flights	Every day
Airports in United States	1 airport

The best one-way flight to United States from Idaho in the past 72 hours is $65. The best round-trip flight deal from Idaho to United States found on momondo in the last 72 hours is $101.

The fastest flight from Idaho to United States takes 1h 06m

Direct flights go from Idaho to United States every day.

There is 1 airport near United States: Seattle/Tacoma Intl (SEA)

Search flight deals

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?
As of November 2025, there are 9 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Idaho to United States is Embraer 175 (26.88% of total bookings). The next most popular plane models are Embraer 175 (Enhanced Winglets) (10.65%), Boeing 737-800 Passenger/BBJ2 (winglets) (9.01%), and Boeing 737-700 Passenger/BBJ1 (winglets) (7.14%).

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 Airlines	PriceFrom $52	Free Cancellation	Rating 6.3 8,158 reviews	Search Spirit Airlines flights
Allegiant Air	PriceFrom $54	Free Cancellation	Rating 7.2 700 reviews	Search Allegiant Air flights
Frontier	PriceFrom $59	Free Cancellation	Rating 5.8 3,104 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $73	Free Cancellation	Rating 7.8 2,811 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $79	Free Cancellation	Rating 7.9 8,002 reviews	Search Delta flights
Alaska Airlines	PriceFrom $130	Free Cancellation	Rating 8.0 11,326 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $134	Free Cancellation	Rating 7.4 9,029 reviews	Search United Airlines flights
Southwest	PriceFrom $139	Free Cancellation	Rating 8.0 4,251 reviews	Search Southwest flights
American Airlines	PriceFrom $166	Free Cancellation	Rating 7.2 11,047 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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Find better results for your trip to the United States

Popular cities in the United States

Flights to New Yorkfrom $44

Flights to Los Angelesfrom $48

Flights to Miamifrom $48

Flights to Chicagofrom $48

Flights to Orlandofrom $39

Flights to Las Vegasfrom $49

Flights to San Franciscofrom $55

Flights to Washington, D.C.from $36

Flights to Bostonfrom $58

Flights to Atlantafrom $38

Flights to Dallasfrom $45

Flights to Seattlefrom $57

Idaho flight routes

Flights from Boise Air Term. Gowen Fld to Las Vegas Harry Reid Intl

Flights from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl

Flights from Idaho Falls Fanning Field to Portland

Flights from Boise Air Term. Gowen Fld to Bozeman Gallatin Field

Flights from Boise Air Term. Gowen Fld to Burbank Bob Hope

Flights from Idaho Falls Fanning Field to Santa Ana J. Wayne/Orange Cnty

Cheap flights from Idaho to the United States from $28

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 1/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Idaho to the United States

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

United Airlines flights from Idaho to United States

Our best United Airlines deals on Idaho to United States flight tickets

Southwest flights from Idaho to United States

Our best Southwest deals on Idaho to United States flight tickets

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Use the filters below to find and compare flights from Idaho to the United States that are best for you.

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?

What is the cheapest day to depart on your flight to United States?

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

The cheapest time of day to fly to United States is at noon when flights can be purchased for as low as $414. Try not to purchase tickets in the morning because they tend to be around $503. Of course, these prices can vary depending on the time of year and what airport you fly to.

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.

What is the cheapest airline that flies from Idaho to United States?

Frontier, Allegiant Air, and Alaska Airlines are the most popular carriers operating from Idaho to United States

What airlines fly to United States?

How many flights depart from Idaho to United States on average per day?

As of November 2025, there are 162 flights per day flying from Idaho to United States. The most common time of day flights depart is 2:00PM, with 44% of flights taking off at noon.

How many flights depart from Idaho to United States on average per week?

As of November 2025, 1,139 flights take off from Idaho and land in United States each week. The most common flight departure day for this route is Fri, with 20% of weekly flights taking off on this day.

How long is the flight from 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

Fastest flight time

Direct flights

Airports in United States

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

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?

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

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

Why use momondo?

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

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

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

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

An easier way to manage your United States 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.

Find better results for your trip to the United States

Popular cities in the United States

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