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Idaho Falls

$231+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — IDA
ago. 18 — ago. 251
lun. 8/18
lun. 8/25
1 adult, Economy
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Cheap 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 agosto 13, 2025.

Round-trip from

$400
(Alaska Airlines)

One-way from

$231
(United Airlines)

Popular in

July

Cheapest in

September

Average price

$569
From Boston Logan Intl to Idaho Falls Fanning Field
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One-way flight from Boston Logan Intl to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 15% potential increase in price ($122 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 agosto 13, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/297:00 amBOS - IDA
1 stop10h 13mAlaska Airlines
mié. 11/193:50 pmIDA - BOS
1 stop13h 39mAlaska Airlines
Deal found 8/11$400
This United Airlines deal was found by Cheapflights users on 8/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/277:30 amBOS - IDA
1 stop8h 00mUnited Airlines
mié. 9/310:56 amIDA - BOS
1 stop8h 59mUnited Airlines
Deal found 8/11$431
This Delta deal was found by Cheapflights users on 8/11. 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.
mié. 8/275:20 pmBOS - IDA
1 stop7h 07mDelta
vie. 9/511:20 amIDA - BOS
2 stops10h 34mDelta
Deal found 8/11$436
This Delta deal was found by Cheapflights users on 8/11. 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.
lun. 9/16:10 amBOS - IDA
1 stop10h 09mDelta
vie. 9/53:00 pmIDA - BOS
1 stop6h 58mDelta
Deal found 8/11$446
This United Airlines deal was found by Cheapflights users on 8/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/271:00 pmBOS - IDA
2 stops9h 54mUnited Airlines
sáb. 9/62:35 pmIDA - BOS
1 stop7h 11mUnited Airlines
Deal found 8/12$451
This Delta deal was found by Cheapflights users on 8/11. 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.
vie. 8/295:20 pmBOS - IDA
1 stop7h 07mDelta
vie. 9/56:52 pmIDA - BOS
1 stop9h 33mDelta
Deal found 8/11$456
This Delta deal was found by Cheapflights users on 8/11. 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.
dom. 8/315:15 amBOS - IDA
2 stops11h 04mDelta
lun. 9/86:52 pmIDA - BOS
1 stop9h 33mDelta
Deal found 8/11$461
This Delta deal was found by Cheapflights users on 8/11. 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.
mar. 8/269:00 amBOS - IDA
2 stops11h 11mDelta
vie. 9/511:20 amIDA - BOS
2 stops10h 34mDelta
Deal found 8/11$466
This American Airlines deal was found by Cheapflights users on 8/11. 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.
vie. 8/297:00 amBOS - IDA
1 stop7h 47mAmerican Airlines
sáb. 9/612:54 pmIDA - BOS
1 stop7h 46mAmerican Airlines
Deal found 8/11$471
This Delta deal was found by Cheapflights users on 8/11. 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.
mar. 8/269:00 amBOS - IDA
2 stops11h 11mDelta
sáb. 9/63:00 pmIDA - BOS
1 stop6h 58mDelta
Deal found 8/11$476

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 agosto 13, 2025.
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

mié. 10/29

7:00 am-3:13 pm

1 stop10h 13m

Idaho Falls Fanning Field

mié. 11/19

3:50 pm-7:29 am

1 stop13h 39m

$400

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

mar. 8/26

10:05 am-6:11 pm

1 stop10h 06m

Idaho Falls Fanning Field

mar. 9/9

6:52 pm-6:25 am

1 stop9h 33m

$431

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

mié. 8/27

7:30 am-1:30 pm

1 stop8h 00m

Idaho Falls Fanning Field

mié. 9/3

10:56 am-9:55 pm

1 stop8h 59m

$431

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

mié. 8/27

10:05 am-6:11 pm

1 stop10h 06m

Idaho Falls Fanning Field

mar. 9/9

3:00 pm-11:58 pm

1 stop6h 58m

$431

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

mar. 8/26

10:05 am-6:11 pm

1 stop10h 06m

Idaho Falls Fanning Field

mié. 9/3

3:00 pm-11:58 pm

1 stop6h 58m

$431

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

mié. 8/27

10:05 am-6:11 pm

1 stop10h 06m

Idaho Falls Fanning Field

jue. 9/4

6:52 pm-6:25 am

1 stop9h 33m

$431

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

mar. 8/26

10:05 am-6:11 pm

1 stop10h 06m

Idaho Falls Fanning Field

lun. 9/8

6:52 pm-6:25 am

1 stop9h 33m

$431

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

mié. 8/27

10:05 am-6:11 pm

1 stop10h 06m

Idaho Falls Fanning Field

vie. 9/5

6:52 pm-6:25 am

1 stop9h 33m

$431

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

mié. 8/27

5:20 pm-10:27 pm

1 stop7h 07m

Idaho Falls Fanning Field

lun. 9/8

6:52 pm-6:25 am

1 stop9h 33m

$431

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

mar. 8/26

10:05 am-6:11 pm

1 stop10h 06m

Idaho Falls Fanning Field

jue. 9/4

3:00 pm-11:58 pm

1 stop6h 58m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 16 results
1
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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 $380). Flying from Boston to Idaho Falls in December is currently the most expensive (average of $578). 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 IDA?

Find hourly flight availability from Boston to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 13, 2025.

One of the essential ways to save on airfare from Boston to Idaho Falls is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 34% on airfare.

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 agosto 13, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American 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.
Delta
8.0
Very good
7,979 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,920 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection 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.

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

    Flying on Alaska Airlines is currently your cheapest option to Idaho Falls, with prices starting at $400. Another option worth looking into is Delta, starting at $431 round trip. These flights start at 38% 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, October is the cheapest month in which you can book a flight from Boston to Idaho Falls (average of $380). Flying from Boston to Idaho Falls in December is currently the most expensive (average of $578). 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 agosto 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$360Average$523FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$400Average$635FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$528Average$702FlexibilityNo cancel feeOn-time69%

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