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Idaho

$141+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — BOI
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(Delta)

One-way from

$141
(Booking.com)

Popular in

December

Cheapest in

October

Average price

$423
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Boise Air Term. Gowen Fld flights.
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From South Dakota to Idaho
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One-way flight from South Dakota to Idaho
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Highest demand for flights based on searches. 12% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($26 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 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 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.
Thu 7/316:50 amRAP - BOI
1 stop7h 22mDelta
Sun 8/35:20 amBOI - RAP
1 stop8h 24mDelta
Deal found 5/1$249
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.
Sat 8/26:50 amRAP - GEG
1 stop7h 27mDelta
Sun 8/106:50 amGEG - RAP
1 stop5h 54mDelta
Deal found 5/1$249
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.
Wed 7/96:00 amFSD - BOI
1 stop5h 50mDelta
Tue 7/155:20 amBOI - FSD
1 stop6h 01mDelta
Deal found 5/1$251
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/119:25 amFSD - BOI
1 stop5h 07mUnited Airlines
Fri 6/205:43 pmBOI - FSD
1 stop5h 01mUnited Airlines
Deal found 5/1$255
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 7/156:00 amFSD - GEG
2 stops7h 56mDelta
Wed 7/166:50 amGEG - FSD
1 stop5h 46mDelta
Deal found 5/1$256
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.
Thu 5/153:43 pmRAP - BOI
1 stop5h 59mUnited Airlines
Mon 5/195:25 pmBOI - RAP
1 stop4h 51mUnited Airlines
Deal found 4/29$274
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/164:53 pmFSD - GEG
1 stop5h 57mUnited Airlines
Tue 5/205:29 amGEG - FSD
1 stop5h 09mUnited Airlines
Deal found 5/1$289
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 8/163:10 pmFSD - SUN
1 stop8h 26mUnited Airlines
Wed 8/2012:35 pmSUN - FSD
2 stops10h 05mUnited Airlines
Deal found 4/30$294
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 5/153:43 pmRAP - IDA
1 stop7h 02mUnited Airlines
Mon 5/194:22 pmIDA - RAP
1 stop5h 54mUnited Airlines
Deal found 4/30$299
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.
Wed 9/37:21 amFSD - GEG
1 stop7h 14mAmerican Airlines
Sun 9/71:39 pmGEG - FSD
1 stop8h 20mAmerican Airlines
Deal found 4/30$300
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.
Thu 5/159:23 amFSD - JAC
1 stop6h 55mUnited Airlines
Mon 5/192:35 pmJAC - FSD
1 stop5h 14mUnited Airlines
Deal found 4/29$309
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.
Fri 7/111:16 pmFSD - JAC
1 stop8h 29mAmerican Airlines
Mon 7/147:00 amJAC - FSD
1 stop8h 31mAmerican Airlines
Deal found 5/1$324

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 May 1, 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 7/31

6:50 am-2:12 pm

1 stop7h 22m

Boise Air Term. Gowen Fld

Sun 8/3

5:20 am-1:44 pm

1 stop8h 24m

$249

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Sat 8/2

6:50 am-1:17 pm

1 stop7h 27m

Spokane

Sun 8/10

6:50 am-1:44 pm

1 stop5h 54m

$249

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Wed 7/9

6:00 am-10:50 am

1 stop5h 50m

Boise Air Term. Gowen Fld

Tue 7/15

5:20 am-12:21 pm

1 stop6h 01m

$251

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Wed 6/11

9:25 am-1:32 pm

1 stop5h 07m

Boise Air Term. Gowen Fld

Fri 6/20

5:43 pm-11:44 pm

1 stop5h 01m

$255

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Tue 7/15

6:00 am-11:56 am

2 stops7h 56m

Spokane

Wed 7/16

6:50 am-2:36 pm

1 stop5h 46m

$256

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Thu 5/15

3:43 pm-9:42 pm

1 stop5h 59m

Boise Air Term. Gowen Fld

Mon 5/19

5:25 pm-10:16 pm

1 stop4h 51m

$274

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Fri 5/16

4:53 pm-8:50 pm

1 stop5h 57m

Spokane

Tue 5/20

5:29 am-12:38 pm

1 stop5h 09m

$289

Sioux FallsHailey

FSD - SUN

FSDSUN

Sioux Falls Joe Foss Field

Sat 8/16

3:10 pm-10:36 pm

1 stop8h 26m

Hailey Sun Valley-Friedman

Wed 8/20

12:35 pm-11:40 pm

2 stops10h 05m

$294

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Thu 5/15

3:43 pm-10:45 pm

1 stop7h 02m

Idaho Falls Fanning Field

Mon 5/19

4:22 pm-10:16 pm

1 stop5h 54m

$299

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Wed 9/3

7:21 am-12:35 pm

1 stop7h 14m

Spokane

Sun 9/7

1:39 pm-11:59 pm

1 stop8h 20m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 26 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, 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 $406). 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 May 1, 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 May 1, 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
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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
Frontier
6.0
Okay
3,287 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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 $141 on Frontier. Other airlines that offer cheap prices include United Airlines from $166 and Delta from $230 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 $406). 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$204Average$308FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$431FlexibilityNo cancel feeOn-time69%

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