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South Dakota

$126+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — FSD
ago. 23 — ago. 301
sáb. 8/23
sáb. 8/30
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 agosto 18, 2025.

Round-trip from

$244
(Delta)

One-way from

$126
(Delta)

Popular in

December

Cheapest in

June

Average price

$340
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. 14% potential increase in price ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 18, 2025.

This American Airlines deal was found by Cheapflights users on 8/17. 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.
sáb. 11/151:14 pmGEG - FSD
1 stop8h 45mAmerican Airlines
mié. 11/195:30 amFSD - GEG
1 stop9h 02mAmerican Airlines
Deal found 8/17$251
This Delta deal was found by Cheapflights users on 8/16. 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.
sáb. 11/152:05 pmGEG - FSD
1 stop6h 44mDelta
mié. 11/195:15 amFSD - GEG
2 stops8h 50mDelta
Deal found 8/16$256
This United Airlines deal was found by Cheapflights users on 8/18. 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.
mar. 9/25:00 amBOI - RAP
1 stop4h 05mUnited Airlines
sáb. 9/65:59 pmRAP - BOI
1 stop4h 22mUnited Airlines
Deal found 8/18$259
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
lun. 9/159:26 pmBOI - FSD
2 stops39h 22mMultiple Airlines
lun. 9/2212:43 pmFSD - BOI
1 stop8h 48mMultiple Airlines
Deal found 8/16$261
This Delta deal was found by Cheapflights users on 8/16. 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.
vie. 9/512:45 pmGEG - FSD
1 stop8h 21mDelta
dom. 9/75:00 amFSD - GEG
2 stops7h 34mDelta
Deal found 8/16$279
This United Airlines deal was found by Cheapflights users on 8/15. 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.
sáb. 8/166:03 pmIDA - RAP
1 stop3h 57mUnited Airlines
mié. 8/205:30 amRAP - IDA
1 stop4h 17mUnited Airlines
Deal found 8/15$289
This United Airlines deal was found by Cheapflights users on 8/16. 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.
mié. 9/32:50 pmJAC - RAP
1 stop4h 00mUnited Airlines
mar. 9/93:19 pmRAP - JAC
1 stop5h 20mUnited Airlines
Deal found 8/16$299
This Delta deal was found by Cheapflights users on 8/17. 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.
mar. 10/215:45 amGEG - RAP
1 stop7h 00mDelta
vie. 10/246:05 amRAP - GEG
1 stop8h 00mDelta
Deal found 8/17$301
This United Airlines deal was found by Cheapflights users on 8/16. 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.
mar. 9/95:39 pmBOI - RAP
1 stop4h 20mUnited Airlines
mar. 9/165:30 amRAP - BOI
1 stop4h 12mUnited Airlines
Deal found 8/16$319
This American Airlines deal was found by Cheapflights users on 8/16. 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.
vie. 9/512:35 pmGEG - FSD
1 stop6h 48mAmerican Airlines
dom. 9/76:00 amFSD - GEG
1 stop8h 44mAmerican Airlines
Deal found 8/16$319
This Delta deal was found by Cheapflights users on 8/15. 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.
mié. 8/275:30 amBOI - FSD
1 stop5h 46mDelta
vie. 9/56:04 pmFSD - BOI
1 stop6h 52mDelta
Deal found 8/15$329
This Delta deal was found by Cheapflights users on 8/16. 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.
jue. 9/43:06 pmBOI - FSD
1 stop7h 40mDelta
dom. 9/76:04 pmFSD - BOI
1 stop6h 52mDelta
Deal found 8/16$344

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 agosto 18, 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

sáb. 11/15

1:14 pm-11:59 pm

1 stop8h 45m

Sioux Falls Joe Foss Field

mié. 11/19

5:30 am-12:32 pm

1 stop9h 02m

$251

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

sáb. 11/15

2:05 pm-10:49 pm

1 stop6h 44m

Sioux Falls Joe Foss Field

mié. 11/19

5:15 am-12:05 pm

2 stops8h 50m

$256

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

mar. 9/2

5:00 am-9:05 am

1 stop4h 05m

Rapid City

sáb. 9/6

5:59 pm-10:21 pm

1 stop4h 22m

$259

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

lun. 9/15

9:26 pm-1:48 pm

2 stops39h 22m

Sioux Falls Joe Foss Field

lun. 9/22

12:43 pm-8:31 pm

1 stop8h 48m

$261

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

vie. 9/5

12:45 pm-11:06 pm

1 stop8h 21m

Sioux Falls Joe Foss Field

dom. 9/7

5:00 am-10:34 am

2 stops7h 34m

$279

JacksonRapid City

JAC - RAP

JACRAP

Jackson Hole

mié. 9/3

2:50 pm-6:50 pm

1 stop4h 00m

Rapid City

mar. 9/9

3:19 pm-8:39 pm

1 stop5h 20m

$299

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

mar. 10/28

4:05 pm-9:59 pm

1 stop4h 54m

Rapid City

jue. 10/30

8:45 am-12:45 pm

1 stop5h 00m

$301

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

mar. 10/21

5:45 am-1:45 pm

1 stop7h 00m

Rapid City

vie. 10/24

6:05 am-1:05 pm

1 stop8h 00m

$301

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

vie. 9/5

12:35 pm-9:23 pm

1 stop6h 48m

Sioux Falls Joe Foss Field

dom. 9/7

6:00 am-12:44 pm

1 stop8h 44m

$319

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

mar. 9/9

5:39 pm-9:59 pm

1 stop4h 20m

Rapid City

mar. 9/16

5:30 am-9:42 am

1 stop4h 12m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

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, September is the cheapest month in which you can book a flight from Idaho to South Dakota (average of $334). Flying from Idaho to South Dakota in December is currently the most expensive (average of $446). 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 agosto 18, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to South Dakota as you normally would.

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 agosto 18, 2025.
See what other customers who have flown with Delta and United 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
7,981 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

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
8,925 reviews
Delta
8.0
Very good
7,981 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

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 $259, American Airlines can have you in South Dakota from Idaho in 4h 05m. 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.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $126. However, be on the lookout for offers from American Airlines and Allegiant Air, 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, September is the cheapest month in which you can book a flight from Idaho to South Dakota (average of $334). Flying from Idaho to South Dakota in December is currently the most expensive (average of $446). 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 2 airlines flying from Idaho to South Dakota

Discover the top 2 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 agosto 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$219Average$360FlexibilityNo cancel feeOn-time69%
DeltaCheapest$228Average$316FlexibilityNo cancel feeOn-timeN/A

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