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South Dakota

$148+ 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 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — FSD
Nov 6 — Nov 131
Thu 11/6
Thu 11/13
1 adult, Economy
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Cheap 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 October 7, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$251
(Delta)

One-way from

$148
(Frontier)

Popular in

December

Cheapest in

June

Average price

$476
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Sioux Falls Joe Foss Field flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Sioux Falls Joe Foss Field flights.
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From Idaho to South Dakota
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One-way flight from Idaho to South Dakota
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Highest demand for flights based on searches. 9% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 7, 2025.

This Delta deal was found by Cheapflights users on 10/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:09 pmGEG - FSD
1 stop6h 51mDelta
Sat 11/158:01 amFSD - GEG
1 stop7h 13mDelta
Deal found 10/7$251
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Mon 11/104:05 pmGEG - FSD
1 stop5h 39mUnited Airlines
Wed 11/198:57 amFSD - GEG
1 stop5h 48mUnited Airlines
Deal found 10/6$255
This United Airlines deal was found by Cheapflights users on 10/6. 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 10/215:05 amGEG - RAP
1 stop4h 52mUnited Airlines
Sat 10/2511:15 amRAP - GEG
1 stop4h 55mUnited Airlines
Deal found 10/6$259
This American Airlines deal was found by Cheapflights users on 10/5. 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.
Mon 11/101:14 pmGEG - FSD
1 stop8h 45mAmerican Airlines
Sun 11/235:11 pmFSD - GEG
1 stop7h 47mAmerican Airlines
Deal found 10/5$259
This Delta deal was found by Cheapflights users on 10/6. 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.
Sat 11/156:00 amGEG - FSD
2 stops11h 35mDelta
Wed 11/191:30 pmFSD - GEG
2 stops12h 40mDelta
Deal found 10/6$261
This Delta deal was found by Cheapflights users on 10/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/192:09 pmGEG - FSD
1 stop6h 51mDelta
Sat 11/228:01 amFSD - GEG
1 stop7h 13mDelta
Deal found 10/7$265
This American Airlines deal was found by Cheapflights users on 10/6. 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.
Mon 11/101:14 pmGEG - FSD
1 stop8h 45mAmerican Airlines
Sat 11/222:50 pmFSD - GEG
1 stop6h 58mAmerican Airlines
Deal found 10/6$270
This American Airlines deal was found by Cheapflights users on 10/6. 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 11/141:25 pmBOI - FSD
1 stop6h 45mAmerican Airlines
Mon 11/176:30 amFSD - BOI
1 stop7h 05mAmerican Airlines
Deal found 10/6$274
This United Airlines deal was found by Cheapflights users on 10/6. 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 10/214:18 pmJAC - RAP
1 stop4h 16mUnited Airlines
Sat 10/259:00 amRAP - JAC
1 stop5h 53mUnited Airlines
Deal found 10/6$279
This Delta deal was found by Cheapflights users on 10/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:09 pmGEG - FSD
1 stop6h 51mDelta
Mon 11/178:01 amFSD - GEG
1 stop7h 13mDelta
Deal found 10/7$280
This United Airlines deal was found by Cheapflights users on 10/5. 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 10/125:00 amBOI - RAP
1 stop5h 57mUnited Airlines
Sun 10/195:30 amRAP - BOI
1 stop4h 12mUnited Airlines
Deal found 10/5$284
This Delta deal was found by Cheapflights users on 10/6. 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 10/217:23 pmGEG - RAP
2 stops13h 30mDelta
Sat 10/256:05 amRAP - GEG
1 stop8h 00mDelta
Deal found 10/6$284

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 October 7, 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

Sat 11/15

1:14 pm-11:59 pm

1 stop8h 45m

Sioux Falls Joe Foss Field

Wed 11/19

5:30 am-12:32 pm

1 stop9h 02m

$251

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Sat 11/15

2:09 pm-11:00 pm

1 stop6h 51m

Sioux Falls Joe Foss Field

Wed 11/19

5:05 am-12:06 pm

1 stop9h 01m

$251

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Tue 11/11

1:14 pm-10:27 pm

1 stop7h 13m

Sioux Falls Joe Foss Field

Sun 11/23

5:11 pm-10:58 pm

1 stop7h 47m

$255

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Wed 11/12

1:47 pm-8:23 pm

1 stop4h 36m

Sioux Falls Joe Foss Field

Tue 11/18

1:47 pm-11:29 pm

2 stops11h 42m

$256

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Wed 11/12

2:09 pm-11:00 pm

1 stop6h 51m

Sioux Falls Joe Foss Field

Sat 11/15

3:00 pm-10:50 pm

2 stops9h 50m

$256

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Wed 11/12

2:09 pm-11:00 pm

1 stop6h 51m

Sioux Falls Joe Foss Field

Tue 11/18

5:18 am-12:03 pm

2 stops8h 45m

$256

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 10/21

5:05 am-10:57 am

1 stop4h 52m

Rapid City

Sat 10/25

11:15 am-3:10 pm

1 stop4h 55m

$259

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Mon 11/10

1:14 pm-11:59 pm

1 stop8h 45m

Sioux Falls Joe Foss Field

Sun 11/23

5:11 pm-10:58 pm

1 stop7h 47m

$259

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Wed 11/19

2:09 pm-11:00 pm

1 stop6h 51m

Sioux Falls Joe Foss Field

Sat 11/22

8:01 am-1:14 pm

1 stop7h 13m

$265

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Fri 11/14

1:25 pm-9:10 pm

1 stop6h 45m

Sioux Falls Joe Foss Field

Mon 11/17

6:30 am-12:35 pm

1 stop7h 05m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/5

Showing 1-10 of 43 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 July is currently the most expensive (average of $284). 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 October 7, 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 October 7, 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
8.0
Very good
7,969 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,969 reviews
Delta
8.0
Very good
7,969 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,957 reviews
Delta
8.0
Very good
7,969 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
11,041 reviews
Delta
8.0
Very good
7,969 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $256, American Airlines can have you in South Dakota from Idaho in 4h 36m. 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.

  • What are the cheapest airlines to fly from Idaho to South Dakota one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $148. However, be on the lookout for offers from Allegiant Air and American Airlines, as they are both options that can get you from Idaho to South Dakota for a low price.

  • 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 July is currently the most expensive (average of $284). 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 October 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$372FlexibilityNo cancel feeOn-time69%
DeltaCheapest$228Average$326FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$250Average$368FlexibilityNo cancel feeOn-time71%

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