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South Dakota

$140+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — FSD
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$225
(Delta)

One-way from

$140
(Booking.com)

Popular in

December

Cheapest in

September

Average price

$551
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. 11% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Delta deal was found by Cheapflights users on 5/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/13:00 pmBOI - FSD
1 stop7h 44mDelta
Tue 7/86:00 amFSD - BOI
1 stop5h 50mDelta
Deal found 5/1$225
This United Airlines deal was found by Cheapflights users on 4/30. 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 7/264:13 pmIDA - RAP
1 stop4h 34mUnited Airlines
Sat 8/25:30 amRAP - IDA
1 stop4h 14mUnited Airlines
Deal found 4/30$229
This American Airlines deal was found by Cheapflights users on 4/30. 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 8/216:00 amGEG - FSD
1 stop8h 35mAmerican Airlines
Sun 8/245:15 pmFSD - GEG
1 stop7h 21mAmerican Airlines
Deal found 4/30$259
This Delta deal was found by Cheapflights users on 4/30. 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 11/152:05 pmGEG - FSD
1 stop6h 44mDelta
Wed 11/196:00 amFSD - GEG
2 stops12h 57mDelta
Deal found 4/30$264
This Mytrip deal was found by Cheapflights users on 5/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/3011:11 amGEG - RAP
1 stop26h 31mMultiple Airlines
Sun 6/110:07 pmRAP - GEG
2 stops20h 06mMultiple Airlines
Deal found 5/1$288
This United Airlines deal was found by Cheapflights users on 4/29. 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 6/215:43 pmBOI - FSD
1 stop5h 01mUnited Airlines
Tue 6/249:25 amFSD - BOI
2 stops13h 19mUnited Airlines
Deal found 4/29$326
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/301:37 pmGEG - RAP
1 stop7h 23mUnited Airlines
Sun 6/111:19 amRAP - GEG
1 stop6h 45mUnited Airlines
Deal found 4/30$329
This United Airlines deal was found by Cheapflights users on 4/30. 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 6/155:43 pmBOI - RAP
1 stop4h 17mUnited Airlines
Sun 6/225:25 amRAP - BOI
1 stop4h 21mUnited Airlines
Deal found 4/30$349
This United Airlines deal was found by Cheapflights users on 4/30. 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 8/2112:35 pmGEG - FSD
2 stops9h 05mUnited Airlines
Sun 8/2411:20 amFSD - GEG
2 stops11h 43mUnited Airlines
Deal found 4/30$395
This United Airlines deal was found by Cheapflights users on 4/30. 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 6/147:00 amJAC - RAP
1 stop15h 00mUnited Airlines
Sat 6/215:25 amRAP - JAC
1 stop4h 18mUnited Airlines
Deal found 4/30$458
This American Airlines deal was found by Cheapflights users on 5/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/76:52 amBOI - RAP
2 stops14h 05mAmerican Airlines
Fri 6/134:39 pmRAP - BOI
1 stop6h 40mAmerican Airlines
Deal found 5/1$529
This Delta deal was found by Cheapflights users on 4/30. 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 6/216:50 amGEG - RAP
1 stop8h 02mDelta
Mon 6/234:32 pmRAP - GEG
2 stops8h 10mDelta
Deal found 4/30$578

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 May 1, 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

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Tue 7/1

3:00 pm-11:44 pm

1 stop7h 44m

Sioux Falls Joe Foss Field

Tue 7/8

6:00 am-10:50 am

1 stop5h 50m

$225

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sat 7/26

4:13 pm-8:47 pm

1 stop4h 34m

Rapid City

Sat 8/2

5:30 am-9:44 am

1 stop4h 14m

$229

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Thu 8/21

6:00 am-4:35 pm

1 stop8h 35m

Sioux Falls Joe Foss Field

Sun 8/24

5:15 pm-10:36 pm

1 stop7h 21m

$259

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Fri 5/23

2:10 pm-10:57 pm

1 stop6h 47m

Sioux Falls Joe Foss Field

Mon 5/26

7:59 pm-11:15 pm

1 stop5h 16m

$274

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Fri 5/30

11:11 am-2:42 pm

1 stop26h 31m

Rapid City

Sun 6/1

10:07 pm-5:13 pm

2 stops20h 06m

$288

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Sat 6/21

5:43 pm-11:44 pm

1 stop5h 01m

Sioux Falls Joe Foss Field

Tue 6/24

9:25 am-9:44 pm

2 stops13h 19m

$326

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Fri 5/30

1:37 pm-10:00 pm

1 stop7h 23m

Rapid City

Sun 6/1

11:19 am-5:04 pm

1 stop6h 45m

$329

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Sun 6/15

5:43 pm-10:00 pm

1 stop4h 17m

Rapid City

Sun 6/22

5:25 am-9:46 am

1 stop4h 21m

$349

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Thu 8/21

12:35 pm-11:40 pm

2 stops9h 05m

Sioux Falls Joe Foss Field

Sun 8/24

11:20 am-9:03 pm

2 stops11h 43m

$395

JacksonRapid City

JAC - RAP

JACRAP

Jackson Hole

Sat 6/14

7:00 am-10:00 pm

1 stop15h 00m

Rapid City

Sat 6/21

5:25 am-9:43 am

1 stop4h 18m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 31 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 May 1, 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.

Rainfall in South Dakota by month

Plan your trip to South Dakota by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in South Dakota ranges from 0.6 - 3.9 inches per month. June is typically the wettest month, when rainfall can reach 3.9 in. January is typically the driest time to visit South Dakota when rainfall is around 0.6 in.

Temperature in South Dakota by month

Plan your trip to South Dakota by taking into account the average temperature totals by month.

If weather is an important factor for your trip to South Dakota, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

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 May 1, 2025.
Read reviews from past customers who have flown Delta, United Airlines and Allegiant Air from Idaho to South Dakota. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Allegiant Air
7.3
Good
734 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Frontier
6.0
Okay
3,287 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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 $140. However, be on the lookout for offers from United Airlines and Delta, 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$198Average$300FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$219Average$391FlexibilityNo cancel feeOn-time69%

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