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South Dakota

$212+ Cheap flights from Idaho to South Dakota

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — FSD
Mai 28 — Jun 41
Do 5/28
Do 6/4
1 adult, Economy
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Cheap flight deals from Idaho to South Dakota

Cheapest flights from Idaho to South Dakota
Explore the most affordable flight options available from Idaho to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.

This Delta deal was found by Cheapflights users on 4/24. 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.
Do 6/185:20 am
BOI
-
RAP
1 stop5h 13m
Delta
So 6/214:30 pm
RAP
-
BOI
1 stop7h 17m
Delta
Deal found 4/24$329
This United Airlines deal was found by Cheapflights users on 4/26. 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.
Do 6/184:08 pm
GEG
-
RAP
1 stop5h 17m
United Airlines
So 6/217:00 am
RAP
-
GEG
1 stop6h 37m
United Airlines
Deal found 4/26$329
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Fr 5/82:33 pm
BOI
-
RAP
1 stop5h 55m
United Airlines
Di 5/124:13 pm
RAP
-
BOI
1 stop5h 04m
United Airlines
Deal found 4/23$339
This Delta deal was found by Cheapflights users on 4/24. 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.
Sa 5/92:16 pm
GEG
-
RAP
1 stop7h 07m
Delta
Mi 5/136:50 am
RAP
-
GEG
1 stop7h 21m
Delta
Deal found 4/24$339
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 5/265:20 am
BOI
-
FSD
1 stop6h 29m
Delta
Mi 6/34:16 pm
FSD
-
BOI
2 stops6h 28m
Delta
Deal found 4/25$344
This Delta deal was found by Cheapflights users on 4/27. 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.
Sa 5/162:23 pm
BOI
-
FSD
1 stop7h 48m
Delta
Fr 5/294:16 pm
FSD
-
BOI
2 stops8h 48m
Delta
Deal found 4/27$359
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 5/261:25 pm
BOI
-
FSD
1 stop28h 08m
Frontier
Mi 6/37:18 pm
FSD
-
BOI
1 stop18h 20m
Frontier
Deal found 4/25$362
This Delta deal was found by Cheapflights users on 4/26. 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.
So 7/267:00 am
GEG
-
RAP
1 stop5h 40m
Delta
Sa 8/16:48 am
RAP
-
GEG
1 stop7h 33m
Delta
Deal found 4/26$364
This Delta deal was found by Cheapflights users on 4/24. 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.
So 6/710:29 am
BOI
-
RAP
1 stop5h 19m
Delta
Fr 6/126:48 am
RAP
-
BOI
2 stops11h 04m
Delta
Deal found 4/24$366
This United Airlines deal was found by Cheapflights users on 4/27. 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.
Do 5/215:00 am
GEG
-
RAP
1 stop6h 29m
United Airlines
Do 5/287:05 am
RAP
-
GEG
1 stop6h 32m
United Airlines
Deal found 4/27$368
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 5/261:25 pm
BOI
-
FSD
1 stop28h 08m
Frontier
Mo 6/14:25 pm
FSD
-
BOI
1 stop21h 05m
Frontier
Deal found 4/25$373
This United Airlines deal was found by Cheapflights users on 4/26. 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.
Mo 5/254:08 pm
GEG
-
FSD
1 stop5h 45m
United Airlines
Mo 6/15:05 pm
FSD
-
GEG
1 stop6h 00m
United Airlines
Deal found 4/26$373

Find flight deals from Idaho to South Dakota

Keep the following information in mind while searching for Idaho to South Dakota flight deals. Data was last updated April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

One-way from

$212
(United Airlines)

Popular in

April

Cheapest in

March

Average price

$486
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Sioux Falls Joe Foss Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Sioux Falls Joe Foss Field flights.
Search Deals
From Idaho to South Dakota
Search Deals
One-way flight from Idaho to South Dakota
Search Deals
High demand for flights, 6% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to South Dakota 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 April 28, 2026.
Use the filters below to find and compare flights from Idaho to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Fr 8/14

5:44 pm-10:23 pm

1 stop4h 39m

Rapid City

Di 8/18

7:00 am-1:35 pm

1 stop6h 35m

$329

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Do 6/18

5:20 am-10:33 am

1 stop5h 13m

Rapid City

So 6/21

4:30 pm-11:47 pm

1 stop7h 17m

$329

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Mi 7/8

5:46 pm-10:25 pm

1 stop4h 39m

Rapid City

Sa 7/11

11:20 am-5:56 pm

1 stop6h 36m

$329

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Sa 5/9

2:16 pm-10:23 pm

1 stop7h 07m

Rapid City

Mi 5/13

6:50 am-1:11 pm

1 stop7h 21m

$339

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Fr 6/19

2:50 pm-11:12 pm

1 stop7h 22m

Sioux Falls Joe Foss Field

Sa 6/27

1:13 pm-10:45 pm

2 stops10h 32m

$344

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Mi 5/20

5:00 am-10:44 am

1 stop4h 44m

Sioux Falls Joe Foss Field

Mo 5/25

6:00 am-9:36 am

1 stop4h 36m

$385

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

So 7/26

5:00 am-12:29 pm

1 stop6h 29m

Rapid City

Mi 7/29

11:20 am-3:11 pm

1 stop4h 51m

$391

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Di 5/26

5:20 am-12:49 pm

1 stop6h 29m

Sioux Falls Joe Foss Field

Di 6/2

8:19 am-1:18 pm

1 stop5h 59m

$393

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Do 7/16

4:10 pm-10:25 pm

1 stop6h 15m

Rapid City

Di 7/21

7:00 am-1:25 pm

1 stop6h 25m

$394

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Fr 10/23

7:20 pm-10:05 am

2 stops12h 45m

Sioux Falls Joe Foss Field

Di 11/10

4:09 pm-7:27 pm

1 stop5h 18m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 42 resultsSorted by cheapest first
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Best time to book a flight from Idaho to South Dakota

Have a flexible travel schedule? Discover the best time to fly to South Dakota from Idaho 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 Idaho to South Dakota

What is the cheapest month to book a flight from Idaho to South Dakota?

Currently, March is the cheapest month in which you can book a flight from Idaho to South Dakota (average of $224). Flying from Idaho to South Dakota in January is currently the most expensive (average of $426). 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.

How much does it cost to fly round-trip from Idaho to South Dakota?

Reviews of airlines servicing South Dakota

Get insights into the airlines that provide service to South Dakota. 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 South Dakota. Reviews last updated April 28, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Idaho to South Dakota have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,467 reviews

Food

7.2

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,467 reviews
Delta
7.9
Good
8,467 reviews

Food

7.2

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,672 reviews
Delta
7.9
Good
8,467 reviews

Food

7.2

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,677 reviews
Delta
7.9
Good
8,467 reviews

Food

7.2

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Idaho to South Dakota. 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 Idaho to South Dakota?

    For as low as $329, Delta can have you in South Dakota from Idaho in 5h 13m. The distance from Idaho to South Dakota is about 656 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Idaho to South Dakota (average of $224). Flying from Idaho to South Dakota in January is currently the most expensive (average of $426). 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

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Alternative routes for Idaho to South Dakota

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Idaho to South Dakota

Discover the top 3 airlines that operate flights from Idaho to South Dakota. 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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$250Average$368FlexibilityNo cancel feeOn-time71%
DeltaCheapest$250Average$359FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$280Average$516FlexibilityNo cancel feeOn-time69%

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