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South Dakota

$191+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — FSD
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This Delta deal was found by Cheapflights users on 12/2. 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 12/253:19 pmBOI - FSD
1 stop6h 49mDelta
Wed 1/74:17 pmFSD - BOI
1 stop5h 38mDelta
Deal found 12/2$255
This Delta deal was found by Cheapflights users on 12/2. 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.
Wed 12/243:23 pmBOI - FSD
1 stop6h 45mDelta
Wed 1/74:17 pmFSD - BOI
1 stop5h 38mDelta
Deal found 12/2$280
This Delta deal was found by Cheapflights users on 12/2. 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 12/253:19 pmBOI - FSD
1 stop6h 49mDelta
Tue 1/64:17 pmFSD - BOI
1 stop5h 38mDelta
Deal found 12/2$284
This Delta deal was found by Cheapflights users on 12/2. 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.
Wed 12/243:23 pmBOI - FSD
1 stop6h 45mDelta
Tue 1/64:17 pmFSD - BOI
1 stop5h 38mDelta
Deal found 12/2$309
This Delta deal was found by Cheapflights users on 12/2. 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.
Fri 12/265:30 amBOI - FSD
1 stop6h 03mDelta
Wed 1/74:17 pmFSD - BOI
1 stop5h 38mDelta
Deal found 12/2$315
This Delta deal was found by Cheapflights users on 12/2. 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 12/253:19 pmBOI - FSD
1 stop6h 49mDelta
Sun 1/47:00 amFSD - BOI
1 stop8h 18mDelta
Deal found 12/2$319
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/245:12 pmBOI - FSD
1 stop5h 43mUnited Airlines
Mon 1/56:00 amFSD - BOI
1 stop5h 01mUnited Airlines
Deal found 12/2$329
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/245:12 pmBOI - FSD
1 stop5h 43mUnited Airlines
Tue 1/69:00 amFSD - BOI
2 stops11h 51mUnited Airlines
Deal found 12/2$330
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/315:05 amGEG - RAP
1 stop6h 41mUnited Airlines
Sat 1/33:35 pmRAP - GEG
1 stop6h 23mUnited Airlines
Deal found 12/4$376
This American Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/41:14 pmGEG - FSD
1 stop8h 45mAmerican Airlines
Wed 12/107:00 amFSD - GEG
1 stop7h 30mAmerican Airlines
Deal found 12/3$409
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/184:20 pmJAC - RAP
1 stop5h 39mUnited Airlines
Mon 12/2211:11 amRAP - JAC
1 stop4h 13mUnited Airlines
Deal found 12/3$414
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/47:00 amGEG - FSD
2 stops11h 21mUnited Airlines
Wed 12/109:00 amFSD - GEG
1 stop5h 45mUnited Airlines
Deal found 12/3$414

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$251
(United Airlines)

One-way from

$191
(Kiwi.com)

Popular in

April

Cheapest in

June

Average price

$381
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. 4% potential increase in price ($17 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 December 2025
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 December 4, 2025.
Use the filters below to find and compare flights from Idaho to South Dakota that are best for you.

Fly from

Idaho

Fly to

South Dakota

Route

Depart

Return

Price

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Tue 1/13

5:00 am-12:58 pm

1 stop5h 58m

Sioux Falls Joe Foss Field

Tue 1/20

9:00 am-3:21 pm

1 stop8h 21m

$251

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Fri 1/23

5:20 am-12:22 pm

1 stop6h 02m

Sioux Falls Joe Foss Field

Tue 1/27

8:03 am-1:34 pm

1 stop6h 31m

$255

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Sat 1/10

2:00 pm-11:04 pm

1 stop7h 04m

Sioux Falls Joe Foss Field

Tue 1/13

5:00 am-12:07 pm

2 stops9h 07m

$256

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Wed 12/24

3:23 pm-11:08 pm

1 stop6h 45m

Sioux Falls Joe Foss Field

Wed 1/7

4:17 pm-8:55 pm

1 stop5h 38m

$280

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Thu 2/5

5:20 am-12:22 pm

1 stop6h 02m

Sioux Falls Joe Foss Field

Wed 2/18

4:17 pm-8:55 pm

1 stop5h 38m

$284

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Sat 2/7

3:04 pm-11:04 pm

1 stop7h 00m

Sioux Falls Joe Foss Field

Wed 2/18

4:17 pm-8:55 pm

1 stop5h 38m

$284

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Tue 1/20

4:19 pm-10:29 pm

1 stop6h 10m

Rapid City

Sat 1/24

5:10 am-9:56 am

1 stop4h 46m

$289

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Sun 2/8

2:37 pm-8:24 pm

1 stop4h 47m

Sioux Falls Joe Foss Field

Sat 2/21

5:50 am-10:12 am

1 stop5h 22m

$308

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Tue 2/10

3:03 pm-10:28 pm

1 stop7h 25m

Rapid City

Sat 2/14

6:00 am-1:59 pm

1 stop7h 59m

$309

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Wed 12/24

3:23 pm-11:08 pm

1 stop6h 45m

Sioux Falls Joe Foss Field

Tue 1/6

4:17 pm-8:55 pm

1 stop5h 38m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 41 results
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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, February is the cheapest month in which you can book a flight from Idaho to South Dakota (average of $132). Flying from Idaho to South Dakota in October is currently the most expensive (average of $289). 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.

What is the cheapest time of day to fly from ID to SD?

Find hourly flight availability from Idaho to South Dakota. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

One of the essential ways to save on airfare from Idaho to South Dakota is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 47% on airfare.

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 December 4, 2025.
See what other customers who have flown with Delta, United Airlines, and American 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
8,011 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Food

7.3

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Food

7.3

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
9,066 reviews
Delta
7.9
Good
8,011 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Food

7.3

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
7.2
Good
11,047 reviews
Delta
7.9
Good
8,011 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Food

7.3

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 $251, United Airlines can have you in South Dakota from Idaho in 5h 58m. The distance from Idaho to South Dakota is about 1039 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, February is the cheapest month in which you can book a flight from Idaho to South Dakota (average of $132). Flying from Idaho to South Dakota in October is currently the most expensive (average of $289). 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$411FlexibilityNo cancel feeOn-time69%
DeltaCheapest$228Average$318FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$250Average$368FlexibilityNo cancel feeOn-time71%

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