HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$100+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Idaho with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Boston to Idaho

Keep the following information in mind while searching for Boston to Idaho flight deals. Data was last updated June 12, 2025.

Round-trip from

$199
(American Airlines)

One-way from

$100
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$501
From Boston Logan Intl to Idaho
Search Deals
One-way flight from Boston Logan Intl to Idaho
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 9/207:03 amBOS - GEG
1 stop8h 41mAmerican Airlines
Tue 9/231:30 pmGEG - BOS
1 stop7h 29mAmerican Airlines
Deal found 6/11$199
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 9/59:20 amBOS - GEG
1 stop10h 31mAlaska Airlines
Sun 9/77:44 pmGEG - BOS
1 stop9h 16mAlaska Airlines
Deal found 6/10$210
This Hawaiian Airlines deal was found by Cheapflights users on 6/9. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:00 amBOS - GEG
1 stop8h 44mHawaiian Airlines
Mon 9/157:44 pmGEG - BOS
1 stop9h 16mHawaiian Airlines
Deal found 6/9$244
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:10 pmBOS - GEG
1 stop8h 50mSouthwest
Mon 8/2512:10 pmGEG - BOS
1 stop6h 55mSouthwest
Deal found 6/11$248
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 7/126:00 pmBOS - GEG
1 stop8h 12mDelta
Tue 7/155:35 pmGEG - BOS
1 stop10h 05mDelta
Deal found 6/10$269
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Sat 9/139:20 amBOS - BOI
1 stop9h 58mAlaska Airlines
Sat 9/138:46 pmBOI - BOS
1 stop9h 14mAlaska Airlines
Deal found 6/10$279
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/66:00 amBOS - BOI
1 stop8h 50mHawaiian Airlines
Sat 9/138:46 pmBOI - BOS
1 stop9h 14mHawaiian Airlines
Deal found 6/12$284
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 9/106:10 amBOS - BOI
1 stop10h 53mDelta
Tue 9/1610:38 amBOI - BOS
1 stop11h 06mDelta
Deal found 6/10$285
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 8/282:33 pmBOS - BOI
1 stop9h 07mAmerican Airlines
Sun 8/311:07 pmBOI - BOS
1 stop8h 52mAmerican Airlines
Deal found 6/11$291
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 9/412:40 pmBOS - JAC
1 stop9h 19mAmerican Airlines
Thu 9/113:20 pmJAC - BOS
1 stop6h 39mAmerican Airlines
Deal found 6/11$317
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/65:35 amBOS - BOI
2 stops11h 15mSouthwest
Sat 9/135:10 amBOI - BOS
1 stop6h 55mSouthwest
Deal found 6/10$320
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 9/31:35 pmBOS - JAC
1 stop8h 18mDelta
Wed 9/107:30 amJAC - BOS
2 stops12h 40mDelta
Deal found 6/10$322

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 June 12, 2025.
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

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Sat 9/20

7:03 am-12:44 pm

1 stop8h 41m

Spokane

Tue 9/23

1:30 pm-11:59 pm

1 stop7h 29m

$199

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Fri 9/5

9:20 am-4:51 pm

1 stop10h 31m

Spokane

Sun 9/7

7:44 pm-8:00 am

1 stop9h 16m

$210

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Tue 9/9

6:00 am-11:44 am

1 stop8h 44m

Spokane

Mon 9/15

7:44 pm-8:00 am

1 stop9h 16m

$244

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Thu 8/21

5:10 pm-11:00 pm

1 stop8h 50m

Spokane

Mon 8/25

12:10 pm-10:05 pm

1 stop6h 55m

$248

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Sat 7/12

6:00 pm-11:12 pm

1 stop8h 12m

Spokane

Tue 7/15

5:35 pm-6:40 am

1 stop10h 05m

$269

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Sat 9/13

9:20 am-5:18 pm

1 stop9h 58m

Boise Air Term. Gowen Fld

Sat 9/13

8:46 pm-8:00 am

1 stop9h 14m

$279

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Sat 9/6

6:00 am-12:50 pm

1 stop8h 50m

Boise Air Term. Gowen Fld

Sat 9/13

8:46 pm-8:00 am

1 stop9h 14m

$284

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Wed 9/10

6:10 am-3:03 pm

1 stop10h 53m

Boise Air Term. Gowen Fld

Tue 9/16

10:38 am-11:44 pm

1 stop11h 06m

$285

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Thu 8/28

2:33 pm-9:40 pm

1 stop9h 07m

Boise Air Term. Gowen Fld

Sun 8/31

1:07 pm-11:59 pm

1 stop8h 52m

$291

BostonJackson

BOS - JAC

BOSJAC

Boston Logan Intl

Thu 9/4

12:40 pm-7:59 pm

1 stop9h 19m

Jackson Hole

Thu 9/11

3:20 pm-11:59 pm

1 stop6h 39m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 58 results
1
2
3
...
6

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, October is the cheapest month in which you can book a flight from Boston to Idaho (average of $314). Flying from Boston to Idaho in June is currently the most expensive (average of $395). 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.

What is the cheapest time of day to fly from BOS to ID?

Find hourly flight availability from Boston to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Boston to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Boston to Idaho, such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $100. Delta flights start at $140 while deals on Alaska Airlines start at $148 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, October is the cheapest month in which you can book a flight from Boston to Idaho (average of $314). Flying from Boston to Idaho in June is currently the most expensive (average of $395). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
Boston to O'Hare Intl flights
Boston to Los Angeles flights
Boston to Seattle flights
Boston to Las Vegas flights
Boston to Orlando flights
Boston to Denver flights
Boston to Miami flights
Boston to Dallas/Fort Worth flights
Boston to Reagan-National flights
Boston to San Francisco flights
Boston to Newark flights
Boston to Fort Lauderdale flights
Boston to Baltimore flights
Boston to Atlanta flights
Boston to Philadelphia flights
Boston to Dulles Intl flights
Hartford to Orlando flights
Boston to LaGuardia flights
Boston to Charlotte flights
Boston to Nashville flights
Boston to Hobby flights
Boston to John F Kennedy Intl flights
Boston to Portland flights
Boston to Minneapolis flights
Boston to San Diego flights
Boston to Tampa flights
Boston to Midway flights
Boston to Sky Harbor Intl flights
Boston to Salt Lake City flights
Hartford to Denver flights
Boston to Charleston flights
Hartford to O'Hare Intl flights
Boston to George Bush Intcntl flights
Boston to Austin flights
Boston to Honolulu flights
Boston to Raleigh flights
Boston to New Orleans flights
Boston to Detroit flights
Boston to Cincinnati flights
Boston to Cleveland flights
Hartford to Los Angeles flights
Boston to Bozeman flights
Hartford to Tampa flights
Boston to Ontario flights
Boston to Pittsburgh flights
Hartford to Las Vegas flights
Boston to Milwaukee flights
Hartford to Dallas/Fort Worth flights
Hartford to Fort Lauderdale flights
Boston to West Palm Beach flights

Top 6 airlines flying from Boston to Idaho

Discover the top 6 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$239Average$353FlexibilityNo cancel feeOn-time65%
DeltaCheapest$289Average$631FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$299Average$514FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$302Average$600FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$325Average$714FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$385Average$527FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.