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$126+ Cheap flights from Boston (BOS) to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
Feb 1 — Feb 81
Sun 2/1
Sun 2/8
1 adult, Economy
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Cheap flight deals from Boston to Idaho

Cheapest flights from Boston to Idaho
Explore the most affordable flight options available from Boston to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 2, 2026.

This United Airlines deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:15 pmBOS - GEG
2 stops26h 04mUnited Airlines
Tue 1/611:25 amGEG - BOS
1 stop20h 27mUnited Airlines
Deal found 12/30$706
This American Airlines deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:02 amBOS - GEG
1 stop14h 26mAmerican Airlines
Tue 1/68:30 amGEG - BOS
1 stop12h 14mAmerican Airlines
Deal found 12/30$733
This American Airlines deal was found by Cheapflights users on 12/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:40 pmBOS - BOI
1 stop31h 19mAmerican Airlines
Fri 1/27:00 amBOI - BOS
1 stop12h 33mAmerican Airlines
Deal found 12/31$837
This United Airlines deal was found by Cheapflights users on 12/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:44 pmBOS - BOI
2 stops29h 15mUnited Airlines
Fri 1/26:15 amBOI - BOS
2 stops13h 29mUnited Airlines
Deal found 12/31$907
This United Airlines deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 amBOS - GEG
1 stop8h 49mUnited Airlines
Sun 1/411:59 pmGEG - BOS
1 stop21h 46mUnited Airlines
Deal found 12/30$943
This Alaska Airlines deal was found by Cheapflights users on 12/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:12 pmBOS - BOI
1 stop8h 45mAlaska Airlines
Sat 1/35:43 amBOI - BOS
1 stop8h 02mAlaska Airlines
Deal found 12/31$1,364
This Delta deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:35 pmBOS - GEG
1 stop8h 29mDelta
Sun 1/47:00 pmGEG - BOS
1 stop8h 42mDelta
Deal found 12/30$1,717

Find flight deals from Boston to Idaho

Keep the following information in mind while searching for Boston to Idaho flight deals. Data was last updated January 2, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$237
(United Airlines)

One-way from

$126
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$356
Provider with most accurate pricing for Boston Logan Intl-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Boise Air Term. Gowen Fld flights.
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From Boston Logan Intl to Idaho
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One-way flight from Boston Logan Intl to Idaho
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Highest demand for flights based on searches. 5% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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, Cheapflights users made 2,558,603 searches. Data last updated January 2, 2026.
Use the filters below to find and compare flights from Boston to Idaho that are best for you.

Fly from

Boston

Fly to

Idaho

Route

Depart

Return

Price

BostonHailey

BOS - SUN

BOSSUN

Boston Logan Intl

Thu 1/22

6:00 am-12:02 pm

1 stop8h 02m

Hailey Sun Valley-Friedman

Mon 1/26

12:43 pm-9:38 pm

1 stop6h 55m

$237

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Thu 1/22

6:00 am-12:39 pm

1 stop8h 39m

Boise Air Term. Gowen Fld

Sat 1/24

10:28 am-8:05 pm

1 stop7h 37m

$257

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Thu 1/22

6:00 am-3:21 pm

2 stops12h 21m

Spokane

Sat 1/24

5:00 am-5:24 pm

2 stops9h 24m

$267

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Fri 1/23

5:35 am-12:30 pm

1 stop8h 55m

Boise Air Term. Gowen Fld

Sat 1/24

5:40 am-4:09 pm

1 stop8h 29m

$275

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Sun 1/18

6:10 am-12:09 pm

1 stop7h 59m

Boise Air Term. Gowen Fld

Thu 1/29

5:20 am-2:05 pm

1 stop6h 45m

$288

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Tue 1/27

7:25 am-3:21 pm

1 stop10h 56m

Spokane

Mon 2/2

1:48 pm-11:46 pm

1 stop6h 58m

$295

BostonJackson

BOS - JAC

BOSJAC

Boston Logan Intl

Sun 2/22

5:44 pm-12:24 pm

1 stop20h 40m

Jackson Hole

Thu 2/26

1:04 pm-11:59 pm

1 stop8h 55m

$296

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Tue 1/27

9:45 am-6:49 pm

1 stop12h 04m

Spokane

Mon 2/2

6:00 am-6:59 pm

1 stop9h 59m

$297

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Fri 1/23

6:44 pm-12:23 am

1 stop8h 39m

Spokane

Sun 1/25

5:00 am-3:20 pm

1 stop7h 20m

$297

BostonJackson

BOS - JAC

BOSJAC

Boston Logan Intl

Thu 1/29

4:20 pm-12:11 pm

1 stop21h 51m

Jackson Hole

Thu 2/5

12:51 pm-11:54 pm

1 stop9h 03m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/31

Showing 1-10 of 60 results
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Best time to book a flight from Boston to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Idaho

What is the cheapest month to book a flight from Boston to Idaho?

Currently, April is the cheapest month in which you can book a flight from Boston to Idaho (average of $204). Flying from Boston to Idaho in June is currently the most expensive (average of $320). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated January 2, 2026.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Boston to Idaho. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,598 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,598 reviews
Alaska Airlines
8.0
Very good
11,598 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Southwest
8.0
Very good
4,254 reviews
Alaska Airlines
8.0
Very good
11,598 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,021 reviews
Alaska Airlines
8.0
Very good
11,598 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,132 reviews
Alaska Airlines
8.0
Very good
11,598 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.2
Good
11,074 reviews
Alaska Airlines
8.0
Very good
11,598 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Boston to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Idaho?

    Boston Logan Intl (BOS), located 2.6 mi from the city center, is the airport you fly out of when you book flights from Boston to Idaho.

  • How long is the flight from Boston to Idaho?

    There are many flights that can get you from Boston to Idaho in 8h 02m. Fly via United Airlines, Delta, or Alaska Airlines to get the fastest option. The distance from Boston to Idaho is about 2165 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Boston to Idaho one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $129. Alaska Airlines flights start at $154 while deals on American Airlines start at $157 one-way.

  • What are the most popular routes from Boston to Idaho?

    While some choose either Boston Logan Intl - Boise Air Term. Gowen Fld or Boston Logan Intl - Spokane, Boston Logan Intl - Jackson Hole is the most popular route from Boston to Idaho.

  • Can I find deals for flights from Boston to Idaho that include hotel bookings?

    Yes. In addition to deals on Boston to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Idaho.

  • Can I find deals for business class flights from Boston to Idaho?

    Yes. Cheapflights offers flight deals from Boston to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Idaho?

    Currently, April is the cheapest month in which you can book a flight from Boston to Idaho (average of $204). Flying from Boston to Idaho in June is currently the most expensive (average of $320). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Boston to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Boston to Idaho

Discover the top 5 airlines that operate flights from Boston to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$256Average$528FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$264Average$513FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$277Average$694FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$296Average$593FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$370Average$486FlexibilityNo cancel feeOn-time63%

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