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$561+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
FSM — IDA
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
1 adult, Economy
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Cheap 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 26, 2026.

This American Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 8/246:00 am
FSM
-
IDA
1 stop6h 30m
American Airlines
Mon 8/312:20 pm
IDA
-
FSM
1 stop7h 02m
American Airlines
Deal found 7/25$561

Find 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 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$561
(American Airlines)
Provider with most accurate pricing for Fort Smith-Idaho Falls Fanning Field flight deals.
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Provider most trusted by Cheapflights users for Fort Smith-Idaho Falls Fanning Field flights.
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From Fort Smith to Idaho Falls Fanning Field
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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 26, 2026.
Use the filters below to find and compare flights from Fort Smith to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Fort SmithIdaho Falls

FSM - IDA

FSMIDA

Fort Smith

Mon 8/24

6:00 am-11:30 am

1 stop6h 30m

Idaho Falls Fanning Field

Mon 8/31

2:20 pm-10:22 pm

1 stop7h 02m

$561

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/25

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Fort Smith-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Fort Smith-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Fort Smith-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Fort Smith-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 Fort Smith-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 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.

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.

  • How long is the flight from Fort Smith to Idaho Falls?

    Airlines like American Airlines fly from Fort Smith to Idaho Falls in about 6h 30m. The time it takes to get you to your destination can typically vary by up to . Fort Smith and Idaho Falls are separated by a distance of 1097 mi.

  • 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.

See more FAQs

Traveling to a place near Idaho Falls?

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