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Idaho Falls

$185+ 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — IDA
Aug 14 — Aug 211
Fri 8/14
Fri 8/21
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 July 15, 2026.

This Orbitz deal was found by Cheapflights users on 7/11. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:03 am
BOS
-
IDA
1 stop14h 53m
Alaska Airlines
Wed 10/214:12 pm
IDA
-
BOS
1 stop12h 03m
Alaska Airlines
Deal found 7/11$369
This Delta deal was found by Cheapflights users on 7/13. 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 8/222:35 pm
BOS
-
IDA
2 stops9h 57m
Delta
Sat 8/297:00 pm
IDA
-
BOS
1 stop9h 30m
Delta
Deal found 7/13$374
This Delta deal was found by Cheapflights users on 7/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:05 am
BOS
-
IDA
1 stop8h 17m
Delta
Sun 10/186:56 pm
IDA
-
BOS
1 stop9h 29m
Delta
Deal found 7/12$394
This Delta deal was found by Cheapflights users on 7/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:39 am
BOS
-
IDA
2 stops8h 43m
Delta
Tue 10/206:56 pm
IDA
-
BOS
1 stop9h 29m
Delta
Deal found 7/11$399
This Booking.com deal was found by Cheapflights users on 7/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/144:48 pm
BOS
-
IDA
1 stop24h 32m
Alaska Airlines
Sat 9/193:57 pm
IDA
-
BOS
1 stop12h 12m
Alaska Airlines
Deal found 7/13$419
This American Airlines deal was found by Cheapflights users on 7/13. 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 8/202:32 pm
BOS
-
IDA
1 stop9h 11m
American Airlines
Mon 8/241:43 pm
IDA
-
BOS
1 stop8h 16m
American Airlines
Deal found 7/13$430
This American Airlines deal was found by Cheapflights users on 7/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:14 am
BOS
-
IDA
1 stop8h 55m
American Airlines
Sat 8/291:43 pm
IDA
-
BOS
1 stop8h 15m
American Airlines
Deal found 7/10$434
This Delta deal was found by Cheapflights users on 7/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:34 pm
BOS
-
IDA
2 stops10h 58m
Delta
Tue 9/156:00 am
IDA
-
BOS
2 stops12h 00m
Delta
Deal found 7/12$444
This American Airlines deal was found by Cheapflights users on 7/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:00 am
BOS
-
IDA
1 stop9h 28m
American Airlines
Sat 10/101:50 pm
IDA
-
BOS
1 stop7h 46m
American Airlines
Deal found 7/10$455

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 July 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(Orbitz)

One-way from

$185
(American Airlines)

Popular in

June

Cheapest in

October

Average price

$682
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. 18% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 15, 2026.
Use the filters below to find and compare flights from Boston to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 8/22

2:35 pm-10:32 pm

2 stops9h 57m

Idaho Falls Fanning Field

Sat 8/29

7:00 pm-6:30 am

1 stop9h 30m

$374

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Tue 9/1

1:34 pm-10:32 pm

2 stops10h 58m

Idaho Falls Fanning Field

Tue 9/15

6:00 am-8:00 pm

2 stops12h 00m

$444

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Fri 9/11

5:42 pm-1:24 pm

1 stop21h 42m

Idaho Falls Fanning Field

Sun 9/20

3:57 pm-6:09 am

1 stop12h 12m

$514
Quickest round-trip

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Mon 8/31

7:45 am-1:29 pm

1 stop7h 44m

Idaho Falls Fanning Field

Tue 9/15

2:25 pm-11:54 pm

1 stop7h 29m

$535

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sun 1/10

6:00 am-1:35 pm

2 stops9h 35m

Idaho Falls Fanning Field

Wed 1/13

5:57 pm-8:44 am

2 stops12h 47m

$554
Cheapest one-way

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sun 9/20

11:28 am-5:31 pm

3 stops32h 03m

$317

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 7/25

7:45 am-3:34 pm

1 stop9h 49m

$330

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 7/25

2:10 pm-10:32 pm

2 stops10h 22m

$365

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 7/25

8:37 am-8:55 am

3 stops26h 18m

$408
Quickest one-way

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Fri 7/31

6:03 am-1:06 pm

1 stop9h 03m

$490

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/14

Showing 1-10 of 11 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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, October is the cheapest month in which you can book a flight from Boston to Idaho Falls (average of $400). Flying from Boston to Idaho Falls in June is currently the most expensive (average of $800). 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.

How much does it cost to fly round-trip from Boston to Idaho Falls?

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 July 15, 2026.
Get a feel of what it's like to fly with Alaska Airlines,United Airlines, andAmerican 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
7.9
Good
12,656 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Alaska Airlines
7.9
Good
12,656 reviews
Alaska Airlines
7.9
Good
12,656 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
United Airlines
7.4
Good
9,988 reviews
Alaska Airlines
7.9
Good
12,656 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
American Airlines
7.1
Good
11,807 reviews
Alaska Airlines
7.9
Good
12,656 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

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 57m. Delta provides one of the quickest options available for as low as $374. There are 2056 mi between Boston and Idaho Falls.

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

    Flying on American Airlines is currently your cheapest option to Idaho Falls, with prices starting at $370. Additional round-trip tickets that might be worth considering are offered by United Airlines and Alaska Airlines, with the lowest prices starting at $435 and $468, respectively. These flights start at 33% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $164. American Airlines flights start at $200 while deals on United Airlines start at $239 one-way.

  • 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, October is the cheapest month in which you can book a flight from Boston to Idaho Falls (average of $400). Flying from Boston to Idaho Falls in June is currently the most expensive (average of $800). 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 3 airlines flying from Boston to Idaho Falls

Discover the top 3 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 July 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$370Average$515FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$435Average$575FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$468Average$748FlexibilityNo cancel feeOn-time75%

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