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

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

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

Prices for flights from Idaho to South Dakota refresh daily.

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

There are 3 operators available for flights from Idaho to South Dakota as of July 2025.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to South Dakota.

What documentation or ID do you need to fly to South Dakota?

The required travel and health documents for your South Dakota trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at South Dakota. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$190 Cheap Flights from Idaho to South Dakota in 2025

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Find the cheapest flights from Idaho to South Dakota

Round-trip

One-way

Last minute

Cheap round-trip flights

1:36 pm - 9:03 pmBOI-FSD

6h 27m1 stop

6:00 am - 12:27 pmFSD-BOI

7h 27m1 stop

$225American Airlines

Find Deal

Sat, Aug 30 - Sat, Sep 6

3:05 pm - 11:43 pmGEG-FSD

6h 38m1 stop

5:30 am - 12:32 pmFSD-GEG

9h 02m1 stop

$251American Airlines

Find Deal

Sat, Nov 15 - Wed, Nov 19

5:42 pm - 10:00 pmBOI-RAP

4h 18m1 stop

5:30 am - 9:42 amRAP-BOI

4h 12m1 stop

$254United Airlines

Find Deal

Sat, Aug 16 - Thu, Aug 21

2:05 pm - 10:49 pmGEG-FSD

6h 44m1 stop

5:15 am - 12:05 pmFSD-GEG

8h 50m2 stops

$256Delta

Find Deal

Sat, Nov 15 - Wed, Nov 19

5:42 pm - 10:00 pmBOI-RAP

4h 18m1 stop

5:30 am - 9:46 amRAP-BOI

4h 16m1 stop

$259United Airlines

Find Deal

Thu, Aug 14 - Mon, Aug 18

7:00 am - 5:29 pmGEG-FSD

8h 29m1 stop

6:00 am - 12:44 pmFSD-GEG

8h 44m1 stop

$259American Airlines

Find Deal

Thu, Sep 25 - Sun, Sep 28

1:38 pm - 9:23 pmBOI-FSD

6h 45m1 stop

6:00 am - 12:27 pmFSD-BOI

7h 27m1 stop

$274American Airlines

Find Deal

Thu, Sep 4 - Sun, Sep 7

5:25 am - 1:51 pmBOI-FSD

7h 26m1 stop

12:56 pm - 7:04 pmFSD-BOI

7h 08m2 stops

$275Delta

Find Deal

Wed, Sep 24 - Sat, Sep 27

6:03 pm - 10:00 pmIDA-RAP

3h 57m1 stop

5:30 am - 9:44 amRAP-IDA

4h 14m1 stop

$276United Airlines

Find Deal

Wed, Aug 13 - Sun, Aug 17

6:06 pm - 7:21 pmBOI-FSD

24h 15m3 stops

11:50 am - 5:11 pmFSD-BOI

6h 21m1 stop

$439

Find Deal

Thu, Aug 14 - Mon, Aug 18

Delta flights from Idaho to South Dakota

Our best Delta deals on Idaho to South Dakota flight tickets

Delta

Nov 15

GEG2:05 pmSpokane

6h 44m

1 stop

FSD10:49 pmSioux Falls Joe Foss Field

Nov 19

FSD5:15 amSioux Falls Joe Foss Field

8h 50m

2 stops

GEG12:05 pmSpokane

$256

Find similar

Delta

Sep 24

BOI5:25 amBoise Air Term. Gowen Fld

7h 26m

1 stop

FSD1:51 pmSioux Falls Joe Foss Field

Sep 27

FSD12:56 pmSioux Falls Joe Foss Field

7h 08m

2 stops

BOI7:04 pmBoise Air Term. Gowen Fld

$275

Find similar

Delta

Oct 18

BOI3:00 pmBoise Air Term. Gowen Fld

7h 36m

1 stop

RAP10:36 pmRapid City

Oct 21

RAP4:34 pmRapid City

7h 20m

1 stop

BOI11:54 pmBoise Air Term. Gowen Fld

$279

Find similar

American Airlines flights from Idaho to South Dakota

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

American Airlines

Aug 30

BOI1:36 pmBoise Air Term. Gowen Fld

6h 27m

1 stop

FSD9:03 pmSioux Falls Joe Foss Field

Sep 6

FSD6:00 amSioux Falls Joe Foss Field

7h 27m

1 stop

BOI12:27 pmBoise Air Term. Gowen Fld

$225

Find similar

American Airlines

Nov 15

GEG3:05 pmSpokane

6h 38m

1 stop

FSD11:43 pmSioux Falls Joe Foss Field

Nov 19

FSD5:30 amSioux Falls Joe Foss Field

9h 02m

1 stop

GEG12:32 pmSpokane

$251

Find similar

American Airlines

Sep 25

GEG7:00 amSpokane

8h 29m

1 stop

FSD5:29 pmSioux Falls Joe Foss Field

Sep 28

FSD6:00 amSioux Falls Joe Foss Field

8h 44m

1 stop

GEG12:44 pmSpokane

$259

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Sat 8/30

1:36 pm-9:03 pm

1 stop6h 27m

Sioux Falls Joe Foss Field

Sat 9/6

6:00 am-12:27 pm

1 stop7h 27m

$225

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Sat 11/15

3:05 pm-11:43 pm

1 stop6h 38m

Sioux Falls Joe Foss Field

Wed 11/19

5:30 am-12:32 pm

1 stop9h 02m

$251

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Sat 8/16

5:42 pm-10:00 pm

1 stop4h 18m

Rapid City

Thu 8/21

5:30 am-9:42 am

1 stop4h 12m

$254

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Sat 11/15

2:05 pm-10:49 pm

1 stop6h 44m

Sioux Falls Joe Foss Field

Wed 11/19

5:15 am-12:05 pm

2 stops8h 50m

$256

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Thu 8/14

5:42 pm-10:00 pm

1 stop4h 18m

Rapid City

Mon 8/18

5:30 am-9:46 am

1 stop4h 16m

$259

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Thu 9/25

7:00 am-5:29 pm

1 stop8h 29m

Sioux Falls Joe Foss Field

Sun 9/28

6:00 am-12:44 pm

1 stop8h 44m

$259

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Thu 9/4

1:38 pm-9:23 pm

1 stop6h 45m

Sioux Falls Joe Foss Field

Sun 9/7

6:00 am-12:27 pm

1 stop7h 27m

$274

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Wed 9/24

5:25 am-1:51 pm

1 stop7h 26m

Sioux Falls Joe Foss Field

Sat 9/27

12:56 pm-7:04 pm

2 stops7h 08m

$275

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Wed 8/13

6:03 pm-10:00 pm

1 stop3h 57m

Rapid City

Sun 8/17

5:30 am-9:44 am

1 stop4h 14m

$276

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Thu 8/14

6:06 pm-7:21 pm

3 stops24h 15m

Sioux Falls Joe Foss Field

Mon 8/18

11:50 am-5:11 pm

1 stop6h 21m

$439

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 Idaho to South Dakota

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

What is the cheapest month to fly to South Dakota?

The month of June is, on average, the cheapest month to fly to South Dakota from Idaho, with most prices found around $309. If you aren’t able to travel to South Dakota during the month of June, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $340.

What is the cheapest day to depart on your flight to South Dakota?

The cheapest day to depart from Idaho to South Dakota is on a Saturday. Travelers who choose to depart for South Dakota on a Saturday will often find tickets for as low as $365. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $681. These prices are subject to change though, so be sure to set up a Price Alert for flights to South Dakota.

What is the cheapest time of day to depart on your flight to South Dakota?

The cheapest time of day to fly to South Dakota is in the afternoon when flights can be purchased for as low as $368. At noon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $569 per ticket.

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

You could potentially save up to 72% on your flight if you consider stops on a Idaho to South Dakota flight.

Cheap Idaho to South Dakota flight deals and tips

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

Best Price Found	$190
Fastest flight time	3h 57m
Direct flights	None
Airports in South Dakota	2 airports

The best one-way flight to South Dakota from Idaho in the past 72 hours is $190. The best round-trip flight deal from Idaho to South Dakota found on momondo in the last 72 hours is $225.

The fastest flight from Idaho to South Dakota takes 3h 57m

There are no direct flights from Idaho to South Dakota. Popular non-direct routes for this connection are Spokane Airport - Sioux Falls Joe Foss Field Airport, Spokane Airport - Rapid City Airport and Jackson Hole Airport - Rapid City Airport.

There are 2 airports near South Dakota: Rapid City (RAP), Sioux Falls Joe Foss Field (FSD)

Search flight deals

When did momondo last update prices for flights from Idaho to South Dakota?
Prices for flights from Idaho to South Dakota refresh daily.
How many operators does momondo search for flights from Idaho to South Dakota?
There are 3 operators available for flights from Idaho to South Dakota as of July 2025.
How old do you have to be to fly from Idaho to South Dakota?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to South Dakota.
What documentation or ID do you need to fly to South Dakota?
The required travel and health documents for your South Dakota trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at South Dakota. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to South Dakota

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $219	Free Cancellation	Rating 7.4 8,900 reviews		Search United Airlines flights
Delta	PriceFrom $228	Free Cancellation	Rating 8.0 7,981 reviews		Search Delta flights

Why use momondo?

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

It is quick and easy to find Idaho to South Dakota flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to South Dakota that suits you.

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

Flights from Idaho to South Dakota with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to South Dakota from Idaho. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to South Dakota, momondo offers a useful price alert feature which will track prices for flights to South Dakota from Idaho and alert you when they change.