Cheap flights from the United States to Idaho from $70

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 4/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.
Alaska Airlines Logo
9:24 pm - 11:59 pm
SEA
-
BOI
1h 35mnonstop
Alaska Airlines Logo
6:00 am - 6:40 am
BOI
-
SEA
1h 40mnonstop
$119Alaska Airlines
Thu, Apr 23 - Sat, Apr 25
Alaska Airlines Logo
9:29 pm - 11:56 pm
SEA
-
BOI
1h 27mnonstop
Alaska Airlines Logo
2:22 pm - 3:00 pm
BOI
-
SEA
1h 38mnonstop
$139Alaska Airlines
Sat, Apr 18 - Tue, Apr 21
Delta Logo
10:36 am - 1:12 pm
SEA
-
BOI
1h 36mnonstop
Delta Logo
8:40 pm - 9:32 pm
BOI
-
SEA
1h 52mnonstop
$148Delta
Wed, Apr 15 - Wed, Apr 22
Southwest Logo
7:20 am - 1:25 pm
SEA
-
BOI
5h 05m
1 stop
Southwest Logo
5:40 pm - 12:40 am
BOI
-
SEA
8h 00m
1 stop
$151Southwest
Thu, Apr 23 - Thu, Apr 23
Southwest Logo
11:35 am - 11:30 pm
SEA
-
BOI
10h 55m
2 stops
Southwest Logo
4:05 pm - 11:35 pm
BOI
-
SEA
8h 30m
1 stop
$156Southwest
Wed, Apr 15 - Wed, Apr 22
Delta Logo
12:00 pm - 3:03 pm
LAX
-
BOI
2h 03mnonstop
Delta Logo
4:55 pm - 6:14 pm
BOI
-
LAX
2h 19mnonstop
$177Delta
Wed, Apr 15 - Sat, Apr 18
United Airlines Logo
1:50 pm - 4:48 pm
SFO
-
BOI
1h 58mnonstop
United Airlines Logo
9:26 am - 10:30 am
BOI
-
SFO
2h 04mnonstop
$177United Airlines
Sat, Apr 18 - Sat, Apr 25
United Airlines Logo
8:10 am - 11:06 am
SFO
-
BOI
1h 56mnonstop
United Airlines Logo
7:03 pm - 8:05 pm
BOI
-
SFO
2h 02mnonstop
$187United Airlines
Fri, Apr 10 - Mon, Apr 13
American Airlines Logo
11:30 am - 2:20 pm
ORD
-
BOI
3h 50mnonstop
American Airlines Logo
3:11 pm - 8:04 pm
BOI
-
ORD
3h 53mnonstop
$251American Airlines
Wed, May 27 - Wed, Jun 3
American Airlines Logo
1:16 pm - 3:30 pm
ORD
-
JAC
3h 14mnonstop
American Airlines Logo
3:49 pm - 8:14 pm
JAC
-
ORD
3h 25mnonstop
$319American Airlines
Tue, May 26 - Tue, Jun 2

Delta flights from United States to Idaho

Our best Delta deals on United States to Idaho flight tickets
Delta
Apr 15
SEA10:36 amSeattle/Tacoma Intl
1h 36m
BOI1:12 pmBoise Air Term. Gowen Fld
Apr 22
BOI8:40 pmBoise Air Term. Gowen Fld
1h 52m
SEA9:32 pmSeattle/Tacoma Intl
$148
Delta
Apr 15
LAX12:00 pmLos Angeles Los Angeles
2h 03m
BOI3:03 pmBoise Air Term. Gowen Fld
Apr 18
BOI4:55 pmBoise Air Term. Gowen Fld
2h 19m
LAX6:14 pmLos Angeles Los Angeles
$177
Delta
May 17
SEA12:15 pmSeattle/Tacoma Intl
1h 45m
BOI3:00 pmBoise Air Term. Gowen Fld
May 20
BOI3:14 pmBoise Air Term. Gowen Fld
1h 41m
SEA3:55 pmSeattle/Tacoma Intl
$188

Alaska Airlines flights from United States to Idaho

Our best Alaska Airlines deals on United States to Idaho flight tickets
Alaska Airlines
Apr 23
SEA9:24 pmSeattle/Tacoma Intl
1h 35m
BOI11:59 pmBoise Air Term. Gowen Fld
Apr 25
BOI6:00 amBoise Air Term. Gowen Fld
1h 40m
SEA6:40 amSeattle/Tacoma Intl
$119
Alaska Airlines
Apr 18
SEA9:29 pmSeattle/Tacoma Intl
1h 27m
BOI11:56 pmBoise Air Term. Gowen Fld
Apr 21
BOI2:22 pmBoise Air Term. Gowen Fld
1h 38m
SEA3:00 pmSeattle/Tacoma Intl
$139
Alaska Airlines
Apr 21
SEA7:49 amSeattle/Tacoma Intl
1h 32m
BOI10:21 amBoise Air Term. Gowen Fld
Apr 21
BOI2:22 pmBoise Air Term. Gowen Fld
1h 38m
SEA3:00 pmSeattle/Tacoma Intl
$159

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 March 23, 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

Cheapest round-trip

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 4/23

9:24 pm-11:59 pm

Nonstop1h 35m

Boise Air Term. Gowen Fld

Sat 4/25

6:00 am-6:40 am

Nonstop1h 40m

$119
Quickest round-trip

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 4/18

9:29 pm-11:56 pm

Nonstop1h 27m

Boise Air Term. Gowen Fld

Tue 4/21

2:22 pm-3:00 pm

Nonstop1h 38m

$139

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 4/15

10:36 am-1:12 pm

Nonstop1h 36m

Boise Air Term. Gowen Fld

Wed 4/22

8:40 pm-9:32 pm

Nonstop1h 52m

$148

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 4/23

7:20 am-1:25 pm

1 stop5h 05m

Boise Air Term. Gowen Fld

Thu 4/23

5:40 pm-12:40 am

1 stop8h 00m

$151

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 4/15

11:35 am-11:30 pm

2 stops10h 55m

Boise Air Term. Gowen Fld

Wed 4/22

4:05 pm-11:35 pm

1 stop8h 30m

$156

Los AngelesBoise

LAX - BOI

LAXBOI

Los Angeles Los Angeles

Wed 4/15

12:00 pm-3:03 pm

Nonstop2h 03m

Boise Air Term. Gowen Fld

Sat 4/18

4:55 pm-6:14 pm

Nonstop2h 19m

$177

San FranciscoBoise

SFO - BOI

SFOBOI

San Francisco

Sat 4/18

1:50 pm-4:48 pm

Nonstop1h 58m

Boise Air Term. Gowen Fld

Sat 4/25

9:26 am-10:30 am

Nonstop2h 04m

$177

San FranciscoBoise

SFO - BOI

SFOBOI

San Francisco

Fri 4/10

8:10 am-11:06 am

Nonstop1h 56m

Boise Air Term. Gowen Fld

Mon 4/13

7:03 pm-8:05 pm

Nonstop2h 02m

$187

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Wed 5/27

11:30 am-2:20 pm

Nonstop3h 50m

Boise Air Term. Gowen Fld

Wed 6/3

3:11 pm-8:04 pm

Nonstop3h 53m

$251

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Tue 5/26

1:16 pm-3:30 pm

Nonstop3h 14m

Jackson Hole

Tue 6/2

3:49 pm-8:14 pm

Nonstop3h 25m

$319

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, 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 $258. If you don’t want to visit Idaho in January, then you should wait until October to fly from United States, when ticket prices are also cheap, with an average price of $318.

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 $261. 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 $342.

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 $225. 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 evening is when there is more demand to fly to Idaho, so prices are often more expensive at around $296 per ticket.

What is the cheapest United States to Idaho flight route?

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

$55

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 $55. The best round-trip flight deal from United States to Idaho found on momondo in the last 72 hours is $88.
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 Boise Air Term. Gowen Fld (BOI).
  • 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
Spirit AirlinesPriceFrom $34Free CancellationRating
6.3
8,539 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $50Free CancellationRating
7.9
12,101 reviews
Search Alaska Airlines flights
Allegiant AirPriceFrom $55Free CancellationRating
7.3
710 reviews
Search Allegiant Air flights
Hawaiian AirlinesPriceFrom $65Free CancellationRating
7.8
2,840 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $98Free CancellationRating
7.9
8,318 reviews
Search Delta flights
FrontierPriceFrom $119Free CancellationRating
5.7
3,020 reviews
Search Frontier flights
United AirlinesPriceFrom $129Free CancellationRating
7.4
9,463 reviews
Search United Airlines flights
SouthwestPriceFrom $137Free CancellationRating
8.0
4,324 reviews
Search Southwest flights
American AirlinesPriceFrom $216Free CancellationRating
7.1
11,486 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.

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1 adult
Wed 4/22
Wed 4/29

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Popular cities in Idaho

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