How long is the flight from South Dakota to Idaho?

Flight times from South Dakota to Idaho vary, but if you’re flying out of Rapid City and flying into Boise (one of the most popular routes), then the duration is 4h 34m on average. Another popular route from South Dakota to Idaho is flying from Sioux Falls to Boise, which will take roughly 5h 25m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from South Dakota to Idaho?

Allegiant Air, United Airlines, and Delta are the most popular carriers operating from South Dakota to Idaho

When did momondo last update prices for flights from South Dakota to Idaho?

Prices for flights from South Dakota to Idaho are updated daily.

How many operators does momondo search for flights from South Dakota to Idaho?

The number of operators available for flights from South Dakota to Idaho is 3 as of August 2026.

How old do you have to be to fly from South Dakota to Idaho?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to Idaho.

What documentation or ID do you need to fly to Idaho?

The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$157 Cheap Flights from South Dakota to Idaho in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from South Dakota to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 1:38 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

6h 38m1 stop Denver Intl

5:00 am - 9:28 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

4h 28m1 stop Denver Intl

$319United Airlines

Fri, Aug 28 - Wed, Sep 2

5:00 am - 9:35 amRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 35m1 stop Denver Intl

6:30 am - 12:24 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

5h 54m1 stop Denver Intl

$319United Airlines

Fri, Aug 28 - Tue, Sep 1

5:00 pm - 11:59 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

7h 59m1 stop Minneapolis St Paul

5:15 am - 12:17 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

6h 02m1 stop Minneapolis St Paul

$329Delta

Fri, Oct 30 - Sat, Nov 14

1:26 pm - 7:24 pmFSD Sioux Falls Joe Foss Field-GEG Spokane

7h 58m1 stop Minneapolis St Paul

2:05 pm - 10:51 pmGEG Spokane-FSD Sioux Falls Joe Foss Field

6h 46m1 stop Minneapolis St Paul

$329Delta

Sat, Aug 29 - Sat, Sep 5

6:00 am - 1:00 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

8h 00m1 stop Dallas/Fort Worth

1:52 pm - 11:53 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

9h 01m1 stop Phoenix Sky Harbor Intl

$329American Airlines

Sat, Sep 19 - Sat, Sep 26

8:05 am - 1:22 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

6h 17m1 stop Phoenix Sky Harbor Intl

2:03 pm - 11:49 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

8h 46m1 stop Phoenix Sky Harbor Intl

$329American Airlines

Fri, Oct 30 - Sat, Nov 14

6:00 am - 9:34 amFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

4h 34m1 stop Denver Intl

2:41 pm - 8:07 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

4h 26m1 stop Denver Intl

$329United Airlines

Sat, Sep 5 - Sat, Sep 12

8:30 am - 6:00 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

10h 30m2 stops Minneapolis St Paul Salt Lake City

5:15 am - 12:17 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

6h 02m1 stop Minneapolis St Paul

$334Delta

Fri, Oct 30 - Sat, Nov 14

12:11 pm - 9:30 amFSD Sioux Falls Joe Foss Field-GEG Spokane

23h 19m3 stops Chicago O'Hare Intl Seattle/Tacoma Intl Portland

10:10 am - 12:41 amGEG Spokane-FSD Sioux Falls Joe Foss Field

12h 31m2 stops Boise Air Term. Gowen Fld Chicago O'Hare Intl

$2,158Alaska Airlines

Fri, Oct 9 - Tue, Oct 13

12:14 pm - 8:14 amFSD Sioux Falls Joe Foss Field-GEG Spokane

22h 00m3 stops Chicago O'Hare Intl Seattle/Tacoma Intl Portland

7:30 pm - 7:01 pmGEG Spokane-FSD Sioux Falls Joe Foss Field

21h 31m2 stops Portland Chicago O'Hare Intl

$2,219Alaska Airlines

Fri, Nov 6 - Sun, Nov 8

Cheap last minute flights

Enter your travel dates to find the best prices.

8:22 am - 1:42 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

6h 20m1 stop Minneapolis St Paul

5:30 am - 12:38 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

6h 08m1 stop Minneapolis St Paul

$469Delta

Fri, Aug 14 - Sun, Aug 16

4:28 pm - 11:59 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

8h 31m2 stops Minneapolis St Paul Salt Lake City

5:30 am - 12:38 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

6h 08m1 stop Minneapolis St Paul

$474Delta

Fri, Aug 14 - Sun, Aug 16

8:22 am - 5:55 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

10h 33m2 stops Minneapolis St Paul Salt Lake City

5:30 am - 12:38 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

6h 08m1 stop Minneapolis St Paul

$484Delta

Fri, Aug 14 - Sun, Aug 16

6:50 pm - 10:40 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

4h 50m1 stop Denver Intl

5:00 am - 10:43 amBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

4h 43m1 stop Denver Intl

$489United Airlines

Fri, Aug 14 - Sun, Aug 16

6:50 pm - 10:40 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

4h 50m1 stop Denver Intl

5:44 pm - 11:44 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

5h 00m1 stop Denver Intl

$491United Airlines

Fri, Aug 14 - Sun, Aug 16

8:22 am - 5:55 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

10h 33m2 stops Minneapolis St Paul Salt Lake City

1:06 pm - 10:51 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

8h 45m2 stops Salt Lake City Minneapolis St Paul

$718Delta

Fri, Aug 14 - Sun, Aug 16

6:00 am - 3:31 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

10h 31m2 stops Denver Intl San Francisco

5:44 pm - 11:44 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

5h 00m1 stop Denver Intl

$727United Airlines

Fri, Aug 14 - Sun, Aug 16

8:22 am - 5:55 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

10h 33m2 stops Minneapolis St Paul Salt Lake City

1:06 pm - 10:51 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

8h 45m2 stops Salt Lake City Minneapolis St Paul

$728Delta

Fri, Aug 14 - Sun, Aug 16

9:35 am - 3:28 pmFSD Sioux Falls Joe Foss Field-JAC Jackson Hole

6h 53m1 stop Denver Intl

4:25 pm - 8:07 pmJAC Jackson Hole-FSD Sioux Falls Joe Foss Field

26h 42m1 stop Denver Intl

$974United Airlines

Thu, Aug 13 - Sun, Aug 16

6:00 am - 4:39 pmFSD Sioux Falls Joe Foss Field-JAC Jackson Hole

11h 39m2 stops Denver Intl San Francisco

4:25 pm - 8:07 pmJAC Jackson Hole-FSD Sioux Falls Joe Foss Field

26h 42m1 stop Denver Intl

$979United Airlines

Thu, Aug 13 - Sun, Aug 16

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Delta flights from South Dakota to Idaho

Our best Delta deals on South Dakota to Idaho flight tickets

Delta

Oct 30

FSD5:00 pmSioux Falls Joe Foss Field

7h 59m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Nov 14

BOI5:15 amBoise Air Term. Gowen Fld

6h 02m

1 stop

FSD12:17 pmSioux Falls Joe Foss Field

$329

Delta

Oct 30

FSD8:30 amSioux Falls Joe Foss Field

10h 30m

2 stops

BOI6:00 pmBoise Air Term. Gowen Fld

Nov 14

BOI5:15 amBoise Air Term. Gowen Fld

6h 02m

1 stop

FSD12:17 pmSioux Falls Joe Foss Field

$334

Delta

Aug 29

FSD6:15 amSioux Falls Joe Foss Field

7h 57m

2 stops

GEG12:12 pmSpokane

Sep 5

GEG1:20 pmSpokane

7h 31m

2 stops

FSD10:51 pmSioux Falls Joe Foss Field

$339

United Airlines flights from South Dakota to Idaho

Our best United Airlines deals on South Dakota to Idaho flight tickets

United Airlines

Aug 28

RAP7:00 amRapid City

6h 38m

1 stop

BOI1:38 pmBoise Air Term. Gowen Fld

Sep 2

BOI5:00 amBoise Air Term. Gowen Fld

4h 28m

1 stop

RAP9:28 amRapid City

$319

United Airlines

Sep 1

RAP10:26 amRapid City

4h 57m

1 stop

IDA3:23 pmIdaho Falls Fanning Field

Sep 7

IDA4:04 pmIdaho Falls Fanning Field

4h 33m

1 stop

RAP8:37 pmRapid City

$335

United Airlines

Sep 19

FSD1:33 pmSioux Falls Joe Foss Field

8h 58m

2 stops

BOI9:31 pmBoise Air Term. Gowen Fld

Sep 26

BOI2:35 pmBoise Air Term. Gowen Fld

8h 09m

2 stops

FSD11:44 pmSioux Falls Joe Foss Field

$339

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Fri 8/28

7:00 am-1:38 pm

1 stop6h 38m

Boise Air Term. Gowen Fld

Wed 9/2

5:00 am-9:28 am

1 stop4h 28m

$319

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Fri 8/28

5:00 am-9:35 am

1 stop4h 35m

Boise Air Term. Gowen Fld

Tue 9/1

6:30 am-12:24 pm

1 stop5h 54m

$319

Sioux FallsBoise

FSD Sioux Falls Joe Foss Field - BOI Boise Air Term. Gowen Fld

FSDBOI

Sioux Falls Joe Foss Field

Fri 10/30

5:00 pm-11:59 pm

1 stop7h 59m

Boise Air Term. Gowen Fld

Sat 11/14

5:15 am-12:17 pm

1 stop6h 02m

$329

Sioux FallsSpokane

FSD Sioux Falls Joe Foss Field - GEG Spokane

FSDGEG

Sioux Falls Joe Foss Field

Sat 8/29

1:26 pm-7:24 pm

1 stop7h 58m

Spokane

Sat 9/5

2:05 pm-10:51 pm

1 stop6h 46m

$329

Sioux FallsBoise

FSD Sioux Falls Joe Foss Field - BOI Boise Air Term. Gowen Fld

FSDBOI

Sioux Falls Joe Foss Field

Sat 9/19

6:00 am-1:00 pm

1 stop8h 00m

Boise Air Term. Gowen Fld

Sat 9/26

1:52 pm-11:53 pm

1 stop9h 01m

$329

Sioux FallsBoise

FSD Sioux Falls Joe Foss Field - BOI Boise Air Term. Gowen Fld

FSDBOI

Sioux Falls Joe Foss Field

Fri 10/30

8:05 am-1:22 pm

1 stop6h 17m

Boise Air Term. Gowen Fld

Sat 11/14

2:03 pm-11:49 pm

1 stop8h 46m

$329

Quickest round-trip

Sioux FallsBoise

FSD Sioux Falls Joe Foss Field - BOI Boise Air Term. Gowen Fld

FSDBOI

Sioux Falls Joe Foss Field

Sat 9/5

6:00 am-9:34 am

1 stop4h 34m

Boise Air Term. Gowen Fld

Sat 9/12

2:41 pm-8:07 pm

1 stop4h 26m

$329

Sioux FallsBoise

FSD Sioux Falls Joe Foss Field - BOI Boise Air Term. Gowen Fld

FSDBOI

Sioux Falls Joe Foss Field

Fri 10/30

8:30 am-6:00 pm

2 stops10h 30m

Boise Air Term. Gowen Fld

Sat 11/14

5:15 am-12:17 pm

1 stop6h 02m

$334

Sioux FallsSpokane

FSD Sioux Falls Joe Foss Field - GEG Spokane

FSDGEG

Sioux Falls Joe Foss Field

Fri 10/9

12:11 pm-9:30 am

3 stops23h 19m

Spokane

Tue 10/13

10:10 am-12:41 am

2 stops12h 31m

$2,158

Sioux FallsSpokane

FSD Sioux Falls Joe Foss Field - GEG Spokane

FSDGEG

Sioux Falls Joe Foss Field

Fri 11/6

12:14 pm-8:14 am

3 stops22h 00m

Spokane

Sun 11/8

7:30 pm-7:01 pm

2 stops21h 31m

$2,219

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from South Dakota to Idaho

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Idaho?

In general, June is the cheapest month to fly from South Dakota to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $278. If you don’t want to visit Idaho in June, then you should wait until February to fly from South Dakota, when ticket prices are also cheap, with an average price of $343.

Can stopping save me money on South Dakota to Idaho flights?

You could potentially save up to 9% on your flight if you consider stops on a South Dakota to Idaho flight.

Cheap South Dakota to Idaho flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Dakota to Idaho

Fastest flight time	4h 34m
Direct flights	None

The fastest flight from South Dakota to Idaho takes 4h 34m

There are no direct flights from South Dakota to Idaho. There are no popular flight routes from South Dakota to Idaho.

Search flight deals

Frequently asked questions about flying from South Dakota to Idaho

When did momondo last update prices for flights from South Dakota to Idaho?
Prices for flights from South Dakota to Idaho are updated daily.
How many operators does momondo search for flights from South Dakota to Idaho?
The number of operators available for flights from South Dakota to Idaho is 3 as of August 2026.
How old do you have to be to fly from South Dakota to Idaho?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from South Dakota to Idaho

Compare and see reviews for airlines that fly from South Dakota to Idaho with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $248	Free Cancellation	Rating 7.4 10,104 reviews		Search United Airlines flights
Delta	PriceFrom $278	Free Cancellation	Rating 7.8 8,505 reviews		Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from South Dakota to Idaho?

Finding the right flight to Idaho from South Dakota is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho quick and easy, saving you time and money.

Can I find flights from South Dakota to Idaho with flexible booking policies on momondo?

All flight searches from South Dakota to Idaho on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from South Dakota to Idaho?

Once you have performed a search for South Dakota to Idaho flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from South Dakota to Idaho right now. Can momondo alert me if prices change?

Price alerts on flights to Idaho from South Dakota are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.