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Cheap flights from Fort Smith to Idaho Falls from $391

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Fort Smith to Idaho Falls departing on 7/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Fort Smith to Idaho Falls

Cheap round-trip flights

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Multiple Airlines Logo
FSM
-
IDA
1097 mimulti-stop
Multiple Airlines Logo
IDA
-
FSM
1097 mimulti-stop
Multiple Airlines

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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, momondo users made 832,500 searches. Data last updated June 19, 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 one-way

Fort SmithIdaho Falls

FSM - IDA

FSMIDA

Fort Smith

Sat 7/4

6:10 am-12:23 pm

1 stop7h 13m

$391
Quickest one-way

Fort SmithIdaho Falls

FSM - IDA

FSMIDA

Fort Smith

Fri 7/3

5:15 pm-10:11 pm

1 stop5h 56m

$411

Fort SmithIdaho Falls

FSM - IDA

FSMIDA

Fort Smith

Thu 7/2

5:15 pm-10:11 pm

1 stop5h 56m

$448

Fort SmithIdaho Falls

FSM - IDA

FSMIDA

Fort Smith

Thu 7/2

6:10 am-12:23 pm

1 stop7h 13m

$488

Fort SmithIdaho Falls

FSM - IDA

FSMIDA

Fort Smith

Sat 7/4

10:06 am-1:23 pm

2 stops28h 17m

$802

Fort SmithIdaho Falls

FSM - IDA

FSMIDA

Fort Smith

Fri 7/3

5:15 pm-1:53 pm

2 stops21h 38m

$812

Fort SmithIdaho Falls

FSM - IDA

FSMIDA

Fort Smith

Thu 7/2

5:15 pm-1:23 pm

2 stops21h 08m

$1,189

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Fort Smith to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Fort Smith to Idaho Falls Fanning Field?

American Airlines is the most popular carrier operating from Fort Smith to Idaho Falls Fanning Field

When to book flights from Fort Smith to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Fort Smith to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Fort Smith to Idaho Falls (FSM to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Fort Smith to Idaho Falls

Fastest flight time

5h 38m

Direct flights

None
The fastest flight from Fort Smith to Idaho Falls takes 5h 38m
There are no direct flights from Fort Smith to Idaho Falls. There are no popular flight routes from Fort Smith to Idaho Falls.
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Frequently asked questions about flying from Fort Smith to Idaho Falls

  • How far is Fort Smith to Idaho Falls Fanning Field by plane?

    The straight-line distance from Fort Smith to Idaho Falls Fanning Field is 1090.3 mi. Typically, this will take 5h 38m by plane in normal conditions.

  • When did momondo last update prices for flights from Fort Smith Airport to Idaho Falls Fanning Field Airport?

    Prices for flights from Fort Smith Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Fort Smith Airport to Idaho Falls Fanning Field Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Fort Smith Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents required for your trip to Idaho Falls Fanning Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho Falls Fanning Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Idaho Falls?

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

Why use momondo?

Why should I use momondo to find a flight deal from Fort Smith to Idaho Falls?

Finding the right flight to Idaho Falls from Fort Smith is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho Falls quick and easy, saving you time and money.

Can I find flights from Fort Smith to Idaho Falls with flexible booking policies on momondo?

Flights from Fort Smith to Idaho Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Fort Smith to Idaho Falls?

Once all potential Fort Smith to Idaho Falls flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Fort Smith to Idaho Falls right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Idaho Falls from Fort Smith. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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