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Idaho

$119+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$237
(Delta)

One-way from

$119
(Delta)

Popular in

December

Cheapest in

January

Average price

$466
From Boston Logan Intl to Idaho
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One-way flight from Boston Logan Intl to Idaho
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/16. 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 10/157:20 amBOS - GEG
1 stop10h 37mDelta
Sun 10/197:23 pmGEG - BOS
1 stop8h 12mDelta
Deal found 9/16$237
This Delta deal was found by Cheapflights users on 9/16. 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 10/296:15 amBOS - GEG
1 stop10h 43mDelta
Sat 11/16:00 amGEG - BOS
1 stop7h 12mDelta
Deal found 9/16$247
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/156:00 amBOS - GEG
1 stop8h 42mUnited Airlines
Wed 10/221:38 pmGEG - BOS
1 stop7h 06mUnited Airlines
Deal found 9/15$317
This Delta deal was found by Cheapflights users on 9/15. 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 10/285:40 amBOS - BOI
1 stop8h 49mDelta
Tue 11/45:42 amBOI - BOS
1 stop6h 11mDelta
Deal found 9/15$317
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/156:00 amBOS - GEG
1 stop8h 42mUnited Airlines
Sat 10/185:05 amGEG - BOS
2 stops9h 46mUnited Airlines
Deal found 9/16$322
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 10/282:04 pmBOS - BOI
2 stops10h 18mAmerican Airlines
Tue 11/41:25 pmBOI - BOS
1 stop7h 37mAmerican Airlines
Deal found 9/15$322
This Delta deal was found by Cheapflights users on 9/15. 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 12/37:15 amBOS - BOI
1 stop10h 47mDelta
Mon 12/811:44 amBOI - BOS
1 stop10h 08mDelta
Deal found 9/15$334
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 10/276:55 pmBOS - GEG
1 stop8h 04mDelta
Mon 11/312:51 pmGEG - BOS
1 stop9h 22mDelta
Deal found 9/15$337
This Delta deal was found by Cheapflights users on 9/16. 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.
Thu 10/167:20 amBOS - BOI
1 stop10h 46mDelta
Mon 10/202:00 pmBOI - BOS
1 stop7h 59mDelta
Deal found 9/16$338
This Delta deal was found by Cheapflights users on 9/14. 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.
Mon 11/36:15 amBOS - SUN
1 stop7h 54mDelta
Wed 11/512:49 pmSUN - BOS
1 stop8h 59mDelta
Deal found 9/14$341
This Orbitz deal was found by Cheapflights users on 9/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/248:25 pmBOS - GEG
1 stop19h 39mAlaska Airlines
Tue 10/288:45 amGEG - BOS
1 stop12h 35mAlaska Airlines
Deal found 9/15$347
This Delta deal was found by Cheapflights users on 9/15. 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 12/36:47 pmBOS - BOI
1 stop7h 56mDelta
Fri 12/57:45 amBOI - BOS
1 stop11h 42mDelta
Deal found 9/15$348

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 September 17, 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

Thu 10/16

7:20 am-2:57 pm

1 stop10h 37m

Spokane

Sun 10/19

5:24 pm-6:35 am

1 stop10h 11m

$237

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Wed 10/15

7:20 am-2:57 pm

1 stop10h 37m

Spokane

Sat 10/18

5:45 am-5:12 pm

1 stop8h 27m

$237

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Wed 10/29

6:15 am-1:58 pm

1 stop10h 43m

Spokane

Sat 11/1

6:00 am-4:12 pm

1 stop7h 12m

$247

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Wed 11/12

8:00 am-1:05 pm

1 stop8h 05m

Spokane

Wed 11/12

7:38 pm-6:35 am

1 stop7h 57m

$317

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Tue 10/28

5:40 am-12:29 pm

1 stop8h 49m

Boise Air Term. Gowen Fld

Tue 11/4

5:42 am-1:53 pm

1 stop6h 11m

$317

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Wed 12/3

6:25 pm-12:10 am

1 stop7h 45m

Boise Air Term. Gowen Fld

Tue 12/9

3:12 pm-11:59 pm

1 stop6h 47m

$317

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Wed 10/15

6:00 am-11:42 am

1 stop8h 42m

Spokane

Sat 10/18

5:05 am-5:51 pm

2 stops9h 46m

$322

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Wed 12/3

7:15 am-4:02 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Mon 12/8

11:44 am-11:52 pm

1 stop10h 08m

$334

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Thu 12/4

11:10 am-6:52 pm

1 stop9h 42m

Boise Air Term. Gowen Fld

Tue 12/9

3:54 pm-5:29 am

1 stop11h 35m

$334

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Mon 10/27

6:55 pm-11:59 pm

1 stop8h 04m

Spokane

Mon 11/3

12:51 pm-1:13 am

1 stop9h 22m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

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, 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 $398). 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 September 17, 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.

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 September 17, 2025.
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
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

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 9h 33m. Fly via Delta or United Airlines to get the fastest option. The distance from Boston to Idaho is about 2056 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 $119. Alaska Airlines flights start at $158 while deals on United Airlines start at $169 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 $398). 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 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$264Average$601FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$264Average$359FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$264Average$500FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$296Average$518FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$330Average$698FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$385Average$506FlexibilityNo cancel feeOn-time63%

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