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Idaho Falls

$211+ Cheap flights from Boston to Idaho Falls (BOS - IDA)

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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — IDA
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheap flight deals from Boston to Idaho Falls

Cheapest flights from Boston to Idaho Falls
Explore the most affordable flight options available from Boston to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 19, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/17. 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 3/117:00 am
BOS
-
IDA
1 stop11h 43m
Alaska Airlines
Tue 3/175:20 pm
IDA
-
BOS
1 stop11h 34m
Alaska Airlines
Deal found 2/17$351
This Orbitz deal was found by Cheapflights users on 2/18. 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.
Wed 5/276:00 am
BOS
-
IDA
1 stop9h 17m
Alaska Airlines
Thu 6/44:03 pm
IDA
-
BOS
1 stop12h 17m
Alaska Airlines
Deal found 2/18$359
This Alaska Airlines deal was found by Cheapflights users on 2/18. 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 10/317:20 am
BOS
-
IDA
1 stop10h 09m
Alaska Airlines
Wed 11/46:15 am
IDA
-
BOS
1 stop8h 31m
Alaska Airlines
Deal found 2/18$389
This Alaska Airlines deal was found by Cheapflights users on 2/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:00 am
BOS
-
IDA
1 stop18h 36m
Alaska Airlines
Mon 3/165:20 pm
IDA
-
BOS
1 stop11h 34m
Alaska Airlines
Deal found 2/15$396
This Delta deal was found by Cheapflights users on 2/17. 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 3/117:10 am
BOS
-
IDA
2 stops13h 05m
Delta
Tue 3/176:55 pm
IDA
-
BOS
1 stop9h 15m
Delta
Deal found 2/17$401
This Alaska Airlines deal was found by Cheapflights users on 2/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:00 am
BOS
-
IDA
1 stop9h 17m
Alaska Airlines
Sat 5/304:03 pm
IDA
-
BOS
1 stop12h 17m
Alaska Airlines
Deal found 2/16$404
This American Airlines deal was found by Cheapflights users on 2/18. 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 5/2710:43 am
BOS
-
IDA
2 stops13h 28m
American Airlines
Thu 6/412:36 pm
IDA
-
BOS
1 stop9h 23m
American Airlines
Deal found 2/18$405
This American Airlines deal was found by Cheapflights users on 2/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1112:59 pm
BOS
-
IDA
2 stops12h 25m
American Airlines
Tue 3/172:18 pm
IDA
-
BOS
2 stops14h 55m
American Airlines
Deal found 2/16$412
This United Airlines deal was found by Cheapflights users on 2/18. 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.
Fri 8/2111:55 am
BOS
-
IDA
1 stop7h 27m
United Airlines
Tue 8/255:00 am
IDA
-
BOS
2 stops9h 26m
United Airlines
Deal found 2/18$420

Find flight deals from Boston to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Idaho Falls (IDA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$351
(Alaska Airlines)

One-way from

$211
(United Airlines)

Popular in

July

Cheapest in

October

Average price

$748
Provider with most accurate pricing for Boston Logan Intl-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Idaho Falls Fanning Field flights.
Search Deals
From Boston Logan Intl to Idaho Falls Fanning Field
Search Deals
One-way flight from Boston Logan Intl to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($177 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Idaho Falls 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 February 19, 2026.
Use the filters below to find and compare flights from Boston to Idaho Falls that are best for you.

Fly from

Boston

Fly to

Idaho Falls

Route

Depart

Return

Price

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Wed 3/11

9:02 am-4:43 pm

1 stop9h 41m

Idaho Falls Fanning Field

Tue 3/17

5:20 pm-6:54 am

1 stop11h 34m

$351

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Thu 3/12

7:00 am-11:36 pm

1 stop18h 36m

Idaho Falls Fanning Field

Mon 3/16

5:20 pm-6:54 am

1 stop11h 34m

$396

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Wed 3/11

7:10 am-6:15 pm

2 stops13h 05m

Idaho Falls Fanning Field

Tue 3/17

6:55 pm-6:10 am

1 stop9h 15m

$401

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Wed 3/11

12:59 pm-11:24 pm

2 stops12h 25m

Idaho Falls Fanning Field

Tue 3/17

2:18 pm-7:13 am

2 stops14h 55m

$412

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Tue 3/17

6:15 am-12:27 pm

1 stop8h 12m

Idaho Falls Fanning Field

Tue 3/24

6:55 pm-6:10 am

1 stop9h 15m

$425

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 3/7

9:02 am-4:43 pm

1 stop9h 41m

Idaho Falls Fanning Field

Tue 3/10

8:00 am-11:59 pm

1 stop13h 59m

$426

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Wed 3/18

7:00 am-1:30 pm

1 stop8h 30m

$211

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Wed 3/18

12:26 pm-11:24 pm

2 stops12h 58m

$241

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Wed 2/25

9:02 am-4:43 pm

1 stop9h 41m

$245

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 2/28

7:00 am-4:43 pm

1 stop11h 43m

$245

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 12 results
1
2

Compare providers for flights from Boston to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Idaho Falls in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Idaho Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls 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 Falls

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

Currently, January is the cheapest month in which you can book a flight from Boston to Idaho Falls (average of $296). Flying from Boston to Idaho Falls in July is currently the most expensive (average of $430). 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 Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Falls. Reviews last updated February 19, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United Airlines from Boston to Idaho Falls by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,907 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Alaska Airlines
8.0
Very good
11,907 reviews
Alaska Airlines
8.0
Very good
11,907 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Delta
7.9
Good
8,215 reviews
Alaska Airlines
8.0
Very good
11,907 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
United Airlines
7.4
Good
9,325 reviews
Alaska Airlines
8.0
Very good
11,907 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
American Airlines
7.2
Good
11,321 reviews
Alaska Airlines
8.0
Very good
11,907 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

Related info for your journey

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

  • How long is the flight from Boston to Idaho Falls?

    A quick flight from Boston to Idaho Falls can take about 9h 41m. Alaska Airlines provides one of the quickest options available for as low as $351. There are 2056 mi between Boston and Idaho Falls.

  • What are the cheapest airlines flying from Boston to Idaho Falls round-trip?

    Flying on Delta is currently your cheapest option to Idaho Falls, with prices starting at $346. Additional round-trip tickets that might be worth considering are offered by American Airlines and Alaska Airlines, with the lowest prices starting at $400 and $439, respectively. These flights start at 39% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to Idaho Falls 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 Falls?

    Currently, January is the cheapest month in which you can book a flight from Boston to Idaho Falls (average of $296). Flying from Boston to Idaho Falls in July is currently the most expensive (average of $430). 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Top 4 airlines flying from Boston to Idaho Falls

Discover the top 4 airlines that operate flights from Boston to Idaho Falls. 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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$346Average$482FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$400Average$450FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$439Average$692FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$450Average$625FlexibilityNo cancel feeOn-time69%

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