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Idaho

$191+ Cheap flights from South Dakota to Idaho

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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — BOI
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from South Dakota to Idaho

Cheapest flights from South Dakota to Idaho
Explore the most affordable flight options available from South Dakota to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

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.
Sat 12/65:15 amRAP - IDA
1 stop4h 32mUnited Airlines
Mon 12/84:19 pmIDA - RAP
1 stop5h 56mUnited Airlines
Deal found 12/2$319
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.
Sun 12/147:00 amFSD - GEG
1 stop7h 30mAmerican Airlines
Sun 1/113:02 pmGEG - FSD
1 stop6h 39mAmerican Airlines
Deal found 12/3$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 12/176:00 amFSD - BOI
1 stop4h 59mUnited Airlines
Tue 1/62:37 pmBOI - FSD
1 stop4h 47mUnited Airlines
Deal found 12/2$354
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:50 pmFSD - GEG
1 stop16h 17mMultiple Airlines
Tue 12/2311:19 amGEG - FSD
1 stop22h 31mMultiple Airlines
Deal found 12/4$364
This United Airlines deal was found by Cheapflights users on 12/1. 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 12/55:15 amRAP - IDA
1 stop4h 32mUnited Airlines
Tue 12/94:19 pmIDA - RAP
1 stop4h 18mUnited Airlines
Deal found 12/1$369
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:11 amFSD - GEG
1 stop6h 58mAmerican Airlines
Sun 12/213:05 pmGEG - FSD
1 stop6h 34mAmerican Airlines
Deal found 12/4$370
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 12/183:35 pmRAP - GEG
1 stop6h 23mUnited Airlines
Mon 12/225:05 amGEG - RAP
1 stop6h 41mUnited Airlines
Deal found 12/3$396
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.
Fri 12/198:11 amFSD - GEG
1 stop7h 25mAmerican Airlines
Mon 12/223:05 pmGEG - FSD
1 stop6h 34mAmerican Airlines
Deal found 12/3$418
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.
Fri 12/59:00 amFSD - GEG
1 stop5h 45mUnited Airlines
Mon 12/84:10 pmGEG - FSD
1 stop5h 33mUnited Airlines
Deal found 12/4$419
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:01 amFSD - BOI
1 stop7h 17mDelta
Mon 12/85:35 amBOI - FSD
1 stop6h 13mDelta
Deal found 12/3$419
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:05 amFSD - GEG
1 stop8h 57mDelta
Mon 12/87:35 pmGEG - FSD
2 stops12h 45mDelta
Deal found 12/4$424
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1412:36 pmFSD - GEG
1 stop23h 11mMultiple Airlines
Sun 1/111:19 pmGEG - FSD
2 stops18h 38mMultiple Airlines
Deal found 12/3$433

Find flight deals from South Dakota to Idaho

Keep the following information in mind while searching for South Dakota to Idaho flight deals. Data was last updated December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(United Airlines)

One-way from

$191
(United Airlines)

Popular in

November

Cheapest in

January

Average price

$635
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Boise Air Term. Gowen Fld flights.
Search Deals
From South Dakota to Idaho
Search Deals
One-way flight from South Dakota to Idaho
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($22 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 South Dakota to Idaho 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 South Dakota to Idaho that are best for you.

Fly from

South Dakota

Fly to

Idaho

Route

Depart

Return

Price

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 1/29

2:40 pm-9:22 pm

1 stop7h 42m

Spokane

Thu 2/5

5:00 am-11:25 am

1 stop5h 25m

$249

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 1/22

6:00 am-1:03 pm

1 stop8h 03m

Spokane

Sun 1/25

6:30 am-3:25 pm

1 stop7h 55m

$249

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Sat 2/7

4:18 pm-8:55 pm

1 stop5h 37m

Boise Air Term. Gowen Fld

Wed 2/11

3:03 pm-11:04 pm

1 stop7h 01m

$251

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Sat 1/31

4:17 pm-8:55 pm

1 stop5h 38m

Boise Air Term. Gowen Fld

Wed 2/4

5:20 am-12:22 pm

1 stop6h 02m

$251

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 1/29

6:00 am-1:03 pm

1 stop8h 03m

Spokane

Thu 2/5

11:25 am-10:28 pm

2 stops10h 03m

$254

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Thu 1/8

8:00 am-2:09 pm

1 stop8h 09m

Spokane

Sun 1/11

3:02 pm-11:41 pm

1 stop6h 39m

$259

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Wed 2/4

8:00 am-1:35 pm

1 stop5h 35m

Boise Air Term. Gowen Fld

Mon 2/9

5:16 pm-10:29 pm

1 stop5h 13m

$270

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Thu 2/5

2:40 pm-9:52 pm

1 stop7h 12m

Boise Air Term. Gowen Fld

Mon 2/9

5:16 pm-10:29 pm

1 stop5h 13m

$270

Sioux FallsHailey

FSD - SUN

FSDSUN

Sioux Falls Joe Foss Field

Fri 1/23

5:18 pm-9:29 pm

1 stop5h 11m

Hailey Sun Valley-Friedman

Sun 1/25

8:00 am-8:24 pm

2 stops11h 24m

$277

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Sat 2/21

4:17 pm-8:55 pm

1 stop5h 38m

Boise Air Term. Gowen Fld

Tue 2/24

5:20 am-12:15 pm

1 stop5h 55m

$280

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 39 results
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Best time to book a flight from South Dakota to Idaho

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

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

Currently, May is the cheapest month in which you can book a flight from South Dakota to Idaho (average of $226). Flying from South Dakota to Idaho in September is currently the most expensive (average of $335). 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 SD to ID?

Find hourly flight availability from South Dakota to Idaho. 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.

When flying from South Dakota to Idaho, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 59% versus a flight in the afternoon.

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

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated December 4, 2025.
See what other customers who have flown with Delta and United Airlines from South Dakota to Idaho 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

Boarding

8.1

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

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
9,066 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

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 South Dakota to Idaho. 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 South Dakota to Idaho?

    United Airlines, Delta, and American Airlines can get you from South Dakota to Idaho in just under 7h 42m. Your travel time can differ by up to 27m. South Dakota and Idaho are separated by a distance of 738 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

    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.

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

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

    Currently, May is the cheapest month in which you can book a flight from South Dakota to Idaho (average of $226). Flying from South Dakota to Idaho in September is currently the most expensive (average of $335). 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 South Dakota to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from South Dakota to Idaho

Discover the top 2 airlines that operate flights from South Dakota to Idaho. 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
DeltaCheapest$243Average$323FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$423FlexibilityNo cancel feeOn-time69%

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