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$486+ Cheap flights from Fort Smith to Idaho Falls (FSM - IDA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
FSM — IDA
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Fort Smith to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Fort Smith (FSM) 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 30, 2025.

Round-trip from

$486
(American Airlines)
From Fort Smith to Idaho Falls Fanning Field
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Find flight deals from Fort Smith to Idaho Falls

Cheapest flights from Fort Smith to Idaho Falls
Explore the most affordable flight options available from Fort Smith to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This American Airlines deal was found by Cheapflights users on 7/29. 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 10/286:04 amFSM - IDA
1 stop7h 21mAmerican Airlines
Sat 11/112:55 pmIDA - FSM
2 stops8h 51mAmerican Airlines
Deal found 7/29$486

Cheapflights Fare Finder

 
Customize your flight search to find flights from Fort Smith 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 30, 2025.
Use the filters below to find and compare flights from Fort Smith to Idaho Falls that are best for you.

Fly from

Fort Smith

Fly to

Idaho Falls

Route

Depart

Return

Price

Fort SmithIdaho Falls

FSM - IDA

FSMIDA

Fort Smith

Tue 10/28

6:04 am-12:25 pm

1 stop7h 21m

Idaho Falls Fanning Field

Sat 11/1

12:55 pm-10:46 pm

2 stops8h 51m

$486

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Fort Smith to Idaho Falls

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

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

Currently, October is the cheapest month in which you can book a flight from Fort Smith to Idaho Falls (average of $380). Flying from Fort Smith 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.

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 30, 2025.
Read reviews from past customers who have flown American Airlines from Fort Smith to Idaho Falls. 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.
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Comfort

7.2

Food

6.5

Entertainment

6.9

Overall

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Comfort

7.2

Food

6.5

Entertainment

6.9

Overall

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break

Related info for your journey

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Fort Smith 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 Fort Smith to Idaho Falls?

    Currently, October is the cheapest month in which you can book a flight from Fort Smith to Idaho Falls (average of $380). Flying from Fort Smith 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.

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