HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$117+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — BOI
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from South Dakota to Idaho with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 June 18, 2025.

Round-trip from

$249
(United Airlines)

One-way from

$117
(Mytrip)

Popular in

December

Cheapest in

January

Average price

$357
From South Dakota to Idaho
Search Deals
One-way flight from South Dakota to Idaho
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find 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 June 18, 2025.

This United Airlines deal was found by Cheapflights users on 6/16. 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.
Thu 7/105:30 amRAP - BOI
1 stop4h 16mUnited Airlines
Sun 7/135:00 amBOI - RAP
1 stop4h 04mUnited Airlines
Deal found 6/16$249
This Delta deal was found by Cheapflights users on 6/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:04 pmFSD - GEG
1 stop7h 29mDelta
Wed 9/106:50 amGEG - FSD
1 stop5h 00mDelta
Deal found 6/18$251
This Delta deal was found by Cheapflights users on 6/16. 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.
Wed 9/36:04 pmFSD - BOI
1 stop6h 52mDelta
Tue 9/93:06 pmBOI - FSD
1 stop7h 40mDelta
Deal found 6/16$251
This Delta deal was found by Cheapflights users on 6/16. 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.
Wed 9/36:25 amRAP - BOI
1 stop7h 36mDelta
Sat 9/63:06 pmBOI - RAP
1 stop7h 26mDelta
Deal found 6/16$259
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Sun 10/59:30 amFSD - JAC
1 stop6h 43mUnited Airlines
Wed 10/84:18 pmJAC - FSD
1 stop5h 57mUnited Airlines
Deal found 6/16$297
This Mytrip deal was found by Cheapflights users on 6/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/139:49 pmRAP - GEG
2 stops20h 13mMultiple Airlines
Thu 7/249:33 amGEG - RAP
1 stop10h 36mMultiple Airlines
Deal found 6/16$302
This American Airlines deal was found by Cheapflights users on 6/17. 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.
Thu 7/105:11 pmFSD - GEG
1 stop8h 17mAmerican Airlines
Tue 7/1512:27 pmGEG - FSD
1 stop7h 34mAmerican Airlines
Deal found 6/17$304
This American Airlines deal was found by Cheapflights users on 6/16. 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.
Sat 9/67:00 amFSD - BOI
1 stop6h 48mAmerican Airlines
Tue 9/91:38 pmBOI - FSD
1 stop6h 45mAmerican Airlines
Deal found 6/16$321
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Wed 9/35:06 pmFSD - BOI
1 stop5h 08mUnited Airlines
Mon 9/82:45 pmBOI - FSD
2 stops7h 55mUnited Airlines
Deal found 6/16$330
This American Airlines deal was found by Cheapflights users on 6/16. 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.
Fri 9/56:00 amRAP - BOI
1 stop6h 48mAmerican Airlines
Mon 9/86:35 amBOI - RAP
2 stops14h 18mAmerican Airlines
Deal found 6/16$356
This Mytrip deal was found by Cheapflights users on 6/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/911:41 amFSD - BOI
1 stop10h 03mMultiple Airlines
Thu 10/169:49 pmBOI - FSD
1 stop15h 58mMultiple Airlines
Deal found 6/18$368
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Wed 9/35:06 pmFSD - GEG
1 stop5h 57mUnited Airlines
Thu 9/1112:35 pmGEG - FSD
2 stops9h 05mUnited Airlines
Deal found 6/18$386

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 June 18, 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 CityBoise

RAP - BOI

RAPBOI

Rapid City

Thu 7/10

5:30 am-9:46 am

1 stop4h 16m

Boise Air Term. Gowen Fld

Sun 7/13

5:00 am-9:04 am

1 stop4h 04m

$249

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Tue 9/2

6:04 pm-11:33 pm

1 stop7h 29m

Spokane

Sat 9/13

2:05 pm-10:49 pm

1 stop6h 44m

$251

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Wed 9/3

6:04 pm-11:56 pm

1 stop6h 52m

Boise Air Term. Gowen Fld

Tue 9/9

3:06 pm-11:46 pm

1 stop7h 40m

$251

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Wed 9/3

6:25 am-2:01 pm

1 stop7h 36m

Boise Air Term. Gowen Fld

Sat 9/6

3:06 pm-10:32 pm

1 stop7h 26m

$259

Sioux FallsJackson

FSD - JAC

FSDJAC

Sioux Falls Joe Foss Field

Sun 10/5

9:30 am-3:13 pm

1 stop6h 43m

Jackson Hole

Wed 10/8

4:18 pm-11:15 pm

1 stop5h 57m

$297

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Sun 7/13

9:49 pm-5:02 pm

2 stops20h 13m

Spokane

Thu 7/24

9:33 am-9:09 pm

1 stop10h 36m

$302

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Thu 7/10

5:11 pm-11:28 pm

1 stop8h 17m

Spokane

Tue 7/15

6:00 am-4:31 pm

1 stop8h 31m

$304

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Sat 9/6

7:00 am-12:48 pm

1 stop6h 48m

Boise Air Term. Gowen Fld

Tue 9/9

1:38 pm-9:23 pm

1 stop6h 45m

$321

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Wed 9/3

5:06 pm-9:14 pm

1 stop5h 08m

Boise Air Term. Gowen Fld

Mon 9/8

2:45 pm-11:40 pm

2 stops7h 55m

$330

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Fri 9/5

6:00 am-12:48 pm

1 stop6h 48m

Boise Air Term. Gowen Fld

Mon 9/8

6:35 am-8:53 pm

2 stops14h 18m

$356

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 30 results
1
2
3

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, October is the cheapest month in which you can book a flight from South Dakota to Idaho (average of $314). Flying from South Dakota to Idaho in June is currently the most expensive (average of $396). 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 June 18, 2025.

When flying from South Dakota to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Idaho by month

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

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

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

If weather is an important factor for your trip to Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 June 18, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines from South Dakota to Idaho to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,810 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

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

    One-way options have recently been found by users for as low as $171 on Delta. Other airlines that offer cheap prices include United Airlines from $195 and American Airlines from $231 one-way.

  • 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, October is the cheapest month in which you can book a flight from South Dakota to Idaho (average of $314). Flying from South Dakota to Idaho in June is currently the most expensive (average of $396). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for South Dakota to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to LaGuardia flights
Los Angeles to John F Kennedy Intl flights
Dallas/Fort Worth to O'Hare Intl flights
John F Kennedy Intl to O'Hare Intl flights
Los Angeles to Seattle flights
Los Angeles to Newark flights
LaGuardia to Fort Lauderdale flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Miami flights
Dallas/Fort Worth to Seattle flights
Newark to Fort Lauderdale flights
Newark to O'Hare Intl flights
John F Kennedy Intl to Orlando flights
Los Angeles to Honolulu flights
San Francisco to Seattle flights
Newark to Miami flights
LaGuardia to Miami flights
John F Kennedy Intl to Seattle flights
Seattle to Los Angeles flights
Newark to Orlando flights
San Francisco to John F Kennedy Intl flights
John F Kennedy Intl to Fort Lauderdale flights
Newark to Seattle flights
John F Kennedy Intl to Los Angeles flights
Dallas/Fort Worth to John F Kennedy Intl flights
Newark to Los Angeles flights
LaGuardia to O'Hare Intl flights
O'Hare Intl to John F Kennedy Intl flights
Los Angeles to O'Hare Intl flights
Dallas/Fort Worth to Newark flights
John F Kennedy Intl to San Francisco flights
Fort Lauderdale to Newark flights
San Francisco to Newark flights
John F Kennedy Intl to Las Vegas flights
O'Hare Intl to Seattle flights
Seattle to Dallas/Fort Worth flights
Los Angeles to LaGuardia flights
Dallas/Fort Worth to Las Vegas flights
O'Hare Intl to LaGuardia flights
Los Angeles to San Francisco flights
Atlanta to John F Kennedy Intl flights
LaGuardia to Atlanta flights
LaGuardia to Orlando flights
Los Angeles to Dallas/Fort Worth flights
Atlanta to LaGuardia flights
John F Kennedy Intl to Denver flights
San Jose to Seattle flights
Miami to John F Kennedy Intl flights
Fort Lauderdale to LaGuardia flights
Newark to San Francisco flights

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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$195Average$278FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$416FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.