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South Dakota

$208+ 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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — FSD
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
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 March 12, 2026.

This United Airlines deal was found by Cheapflights users on 3/7. 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.
Sat 4/255:29 pm
BOI
-
RAP
1 stop4h 59m
United Airlines
Mon 4/275:20 am
RAP
-
BOI
1 stop4h 34m
United Airlines
Deal found 3/7$289
This United Airlines deal was found by Cheapflights users on 3/7. 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.
Thu 8/201:38 pm
GEG
-
RAP
1 stop5h 54m
United Airlines
Tue 8/2511:08 am
RAP
-
GEG
1 stop4h 50m
United Airlines
Deal found 3/7$289
This Delta deal was found by Cheapflights users on 3/9. 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.
Tue 3/246:00 am
GEG
-
RAP
1 stop8h 18m
Delta
Mon 4/64:01 pm
RAP
-
GEG
1 stop6h 28m
Delta
Deal found 3/9$294
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Fri 4/245:00 am
BOI
-
FSD
1 stop4h 29m
United Airlines
Sat 4/254:57 pm
FSD
-
BOI
1 stop5h 37m
United Airlines
Deal found 3/11$305
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Fri 4/171:46 pm
GEG
-
FSD
1 stop4h 44m
United Airlines
Sat 4/189:05 am
FSD
-
GEG
1 stop5h 35m
United Airlines
Deal found 3/11$305
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Sat 4/255:29 pm
BOI
-
RAP
1 stop4h 59m
United Airlines
Tue 4/282:47 pm
RAP
-
BOI
1 stop6h 35m
United Airlines
Deal found 3/9$309
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 8/141:49 pm
BOI
-
FSD
1 stop9h 03m
American Airlines
Wed 8/197:04 am
FSD
-
BOI
1 stop6h 42m
American Airlines
Deal found 3/9$314
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Tue 3/246:15 am
BOI
-
RAP
1 stop6h 58m
United Airlines
Sat 3/285:41 pm
RAP
-
BOI
1 stop5h 02m
United Airlines
Deal found 3/8$318
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Sat 4/255:05 am
GEG
-
FSD
1 stop5h 45m
United Airlines
Sat 4/254:57 pm
FSD
-
GEG
1 stop6h 14m
United Airlines
Deal found 3/9$318
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Wed 3/251:37 pm
GEG
-
RAP
1 stop7h 20m
United Airlines
Sun 3/292:42 pm
RAP
-
GEG
1 stop7h 29m
United Airlines
Deal found 3/11$319
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Fri 4/245:00 am
BOI
-
FSD
1 stop4h 29m
United Airlines
Sun 4/266:00 am
FSD
-
BOI
1 stop4h 54m
United Airlines
Deal found 3/11$319
This Delta deal was found by Cheapflights users on 3/11. 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.
Thu 4/92:15 pm
GEG
-
FSD
1 stop6h 49m
Delta
Thu 4/168:05 am
FSD
-
GEG
1 stop6h 59m
Delta
Deal found 3/11$319

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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$289
(United Airlines)

One-way from

$208
(Kiwi.com)

Popular in

January

Cheapest in

June

Average price

$377
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
Highest demand for flights based on searches. 10% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 12, 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

Sat 4/25

5:29 pm-10:28 pm

1 stop4h 59m

Rapid City

Mon 4/27

5:20 am-9:54 am

1 stop4h 34m

$289

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 3/24

6:00 am-3:18 pm

1 stop8h 18m

Rapid City

Mon 4/6

4:01 pm-9:29 pm

1 stop6h 28m

$294

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Wed 4/22

5:29 pm-10:28 pm

1 stop4h 59m

Rapid City

Sat 4/25

5:20 am-9:54 am

1 stop4h 34m

$309

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Fri 4/24

5:00 am-10:29 am

1 stop4h 29m

Sioux Falls Joe Foss Field

Sat 4/25

9:05 am-7:39 pm

2 stops11h 34m

$310

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Thu 4/9

2:15 pm-11:04 pm

1 stop6h 49m

Sioux Falls Joe Foss Field

Thu 4/16

8:05 am-1:04 pm

1 stop6h 59m

$319

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Wed 3/25

2:15 pm-11:04 pm

1 stop6h 49m

Sioux Falls Joe Foss Field

Sun 3/29

8:00 am-1:10 pm

1 stop7h 10m

$329

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Tue 4/14

5:29 pm-11:44 pm

1 stop5h 15m

Sioux Falls Joe Foss Field

Sat 4/18

6:00 am-4:48 pm

2 stops11h 48m

$346

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Wed 4/15

4:01 pm-11:44 pm

1 stop5h 43m

Sioux Falls Joe Foss Field

Sat 4/18

9:05 am-3:15 pm

1 stop8h 10m

$351

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Thu 3/26

6:00 am-3:18 pm

1 stop8h 18m

Rapid City

Mon 3/30

4:01 pm-11:50 pm

2 stops8h 49m

$354

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 3/24

6:00 am-3:18 pm

1 stop8h 18m

Rapid City

Sat 3/28

6:00 am-1:10 pm

1 stop8h 10m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 45 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, June is the cheapest month in which you can book a flight from Idaho to South Dakota (average of $228). Flying from Idaho to South Dakota in January is currently the most expensive (average of $432). 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 March 12, 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
8,286 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

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
8,286 reviews
Delta
7.9
Good
8,286 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

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
9,418 reviews
Delta
7.9
Good
8,286 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

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
11,435 reviews
Delta
7.9
Good
8,286 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

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 $289, United Airlines can have you in South Dakota from Idaho in 4h 59m. 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, June is the cheapest month in which you can book a flight from Idaho to South Dakota (average of $228). Flying from Idaho to South Dakota in January is currently the most expensive (average of $432). 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

Browse thousands of different options on Cheapflights for your next trip

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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 March 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$228Average$338FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$250Average$338FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$280Average$524FlexibilityNo cancel feeOn-time69%

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