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Idaho Falls

$349+ Cheap flights from South Dakota to Idaho Falls (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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — IDA
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from South Dakota to Idaho Falls

Keep the following information in mind while searching for South Dakota to Idaho Falls flight deals. Data was last updated August 14, 2025.

Round-trip from

$349
(Kiwi.com)
From South Dakota to Idaho Falls Fanning Field
Search Deals

Find flight deals from South Dakota to Idaho Falls

Cheapest flights from South Dakota to Idaho Falls
Explore the most affordable flight options available from South Dakota to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/145:39 pmRAP - IDA
1 stop21h 10mAllegiant Air
Thu 9/188:43 pmIDA - RAP
1 stop18h 07mAllegiant Air
Deal found 8/14$349
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/145:39 pmRAP - IDA
2 stops17h 27mMultiple Airlines
Thu 9/188:43 pmIDA - RAP
1 stop18h 07mMultiple Airlines
Deal found 8/14$413
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Sun 9/144:47 pmRAP - IDA
1 stop4h 07mUnited Airlines
Thu 9/184:15 pmIDA - RAP
1 stop5h 44mUnited Airlines
Deal found 8/14$455
This Delta deal was found by Cheapflights users on 8/14. 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.
Sun 9/146:27 amRAP - IDA
2 stops11h 44mDelta
Thu 9/181:06 pmIDA - RAP
2 stops9h 24mDelta
Deal found 8/14$1,611

Cheapflights Fare Finder

 
Customize your flight search to find flights from South Dakota 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 August 14, 2025.
Use the filters below to find and compare flights from South Dakota to Idaho Falls that are best for you.

Fly from

South Dakota

Fly to

Idaho Falls

Route

Depart

Return

Price

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sun 9/14

5:39 pm-2:49 pm

1 stop21h 10m

Idaho Falls Fanning Field

Thu 9/18

8:43 pm-2:50 pm

1 stop18h 07m

$349

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sun 9/14

5:39 pm-11:06 am

2 stops17h 27m

Idaho Falls Fanning Field

Thu 9/18

8:43 pm-2:50 pm

1 stop18h 07m

$413

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 9/15

5:59 pm-10:48 pm

1 stop4h 49m

Idaho Falls Fanning Field

Fri 9/19

4:15 pm-9:59 pm

1 stop5h 44m

$455

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sun 9/14

4:47 pm-8:54 pm

1 stop4h 07m

Idaho Falls Fanning Field

Thu 9/18

4:15 pm-9:59 pm

1 stop5h 44m

$455

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sun 9/14

6:27 am-6:11 pm

2 stops11h 44m

Idaho Falls Fanning Field

Thu 9/18

1:06 pm-10:30 pm

2 stops9h 24m

$1,611

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Best time to book a flight from South Dakota to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from South Dakota 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 South Dakota to Idaho Falls
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from South Dakota 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 airport do you fly into for flights to Idaho Falls from South Dakota?

    Idaho Falls Fanning Field (IDA), located 3.8 mi from the city center, is the airport you fly into when you book flights from South Dakota to Idaho Falls.

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

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

  • How can I find direct flights from South Dakota to Idaho Falls?

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

  • Can I find deals for business class flights from South Dakota to Idaho Falls?

    Yes. Cheapflights offers flight deals from South Dakota 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 South Dakota to Idaho Falls?

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

Discover the top airline that operate flights from South Dakota 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$182Average$404FlexibilityNo cancel feeOn-time69%

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