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

Allegiant Air, Delta, and United Airlines 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 2 operators available for flights from Idaho to South Dakota as of September 2026.

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.

$138 Cheap Flights from Idaho to South Dakota in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to South Dakota

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:51 pm - 11:44 pmIDA Idaho Falls Fanning Field-FSD Sioux Falls Joe Foss Field

4h 53m1 stop Denver Intl

9:32 am - 3:38 pmFSD Sioux Falls Joe Foss Field-IDA Idaho Falls Fanning Field

7h 06m1 stop Denver Intl

$339United Airlines

Sat, Oct 24 - Sat, Oct 31

5:00 am - 11:55 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

6h 55m1 stop Denver Intl

5:00 am - 9:34 amRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 34m1 stop Denver Intl

$339United Airlines

Sat, Oct 17 - Fri, Oct 23

5:30 am - 1:43 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

8h 13m1 stop Minneapolis St Paul

4:36 pm - 11:59 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

7h 23m1 stop Minneapolis St Paul

$339Delta

Thu, Nov 12 - Tue, Nov 17

5:51 pm - 11:44 pmIDA Idaho Falls Fanning Field-FSD Sioux Falls Joe Foss Field

4h 53m1 stop Denver Intl

6:00 am - 3:38 pmFSD Sioux Falls Joe Foss Field-IDA Idaho Falls Fanning Field

10h 38m2 stops Chicago O'Hare Intl Denver Intl

$344United Airlines

Sat, Oct 24 - Sat, Oct 31

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

5h 00m1 stop Denver Intl

6:00 am - 11:31 amFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

6h 31m1 stop Chicago O'Hare Intl

$344United Airlines

Sat, Nov 14 - Sun, Nov 15

12:14 pm - 9:01 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

7h 47m1 stop Dallas/Fort Worth

2:26 pm - 7:24 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

5h 58m1 stop Phoenix Sky Harbor Intl

$349American Airlines

Tue, Oct 27 - Tue, Nov 3

5:30 am - 1:57 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

8h 27m1 stop Minneapolis St Paul

4:38 pm - 11:59 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

7h 21m1 stop Minneapolis St Paul

$354Delta

Thu, Oct 15 - Thu, Oct 22

5:30 am - 1:57 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

8h 27m1 stop Minneapolis St Paul

6:39 am - 12:35 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

5h 56m1 stop Minneapolis St Paul

$354Delta

Fri, Oct 16 - Sun, Oct 18

12:14 pm - 9:56 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

9h 42m1 stop Dallas/Fort Worth

6:11 am - 1:51 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

7h 40m1 stop Dallas/Fort Worth

$365American Airlines

Fri, Oct 23 - Sat, Nov 14

12:14 pm - 9:56 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

9h 42m1 stop Dallas/Fort Worth

6:11 am - 1:51 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

7h 40m1 stop Dallas/Fort Worth

$405American Airlines

Fri, Oct 23 - Sat, Nov 14

Cheap last minute flights

Enter your travel dates to find the best prices.

2:44 pm - 7:08 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

4h 24m1 stop Denver Intl

5:00 am - 9:34 amRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 34m1 stop Denver Intl

$429United Airlines

Sat, Oct 3 - Mon, Oct 5

1:30 pm - 12:48 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

22h 18m1 stop Phoenix-Mesa Gateway

9:56 pm - 1:55 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

16h 59m2 stops Phoenix-Mesa Gateway Las Vegas Harry Reid Intl

$558Multiple Airlines

Mon, Oct 5 - Wed, Oct 7

11:03 am - 10:18 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

11h 15m2 stops Salt Lake City Minneapolis St Paul

6:48 am - 1:44 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

6h 56m1 stop Minneapolis St Paul

$724Delta

Sat, Oct 3 - Mon, Oct 5

5:00 am - 11:55 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

6h 55m1 stop Denver Intl

7:05 am - 11:59 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

16h 54m3 stops Denver Intl Las Vegas Harry Reid Intl San Francisco

$822United Airlines

Sat, Oct 3 - Mon, Oct 5

2:50 pm - 10:51 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

7h 01m1 stop Minneapolis St Paul

8:30 am - 12:35 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

5h 05m1 stop Minneapolis St Paul

$840Delta

Sun, Oct 4 - Tue, Oct 6

5:00 am - 12:49 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

6h 49m1 stop Denver Intl

11:35 am - 5:43 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

7h 08m1 stop Denver Intl

$840United Airlines

Mon, Oct 5 - Wed, Oct 7

10:30 am - 6:15 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

6h 45m1 stop Denver Intl

1:46 pm - 5:43 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

4h 57m1 stop Denver Intl

$840United Airlines

Wed, Sep 30 - Fri, Oct 2

5:00 am - 12:49 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

6h 49m1 stop Denver Intl

5:04 pm - 10:33 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

6h 29m1 stop Denver Intl

$840United Airlines

Wed, Sep 30 - Fri, Oct 2

5:30 am - 12:19 pmBOI Boise Air Term. Gowen Fld-FSD Sioux Falls Joe Foss Field

5h 49m1 stop Minneapolis St Paul

1:00 pm - 11:59 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

11h 59m2 stops Minneapolis St Paul Salt Lake City

$845Delta

Sun, Oct 4 - Tue, Oct 6

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

1:00 pm - 11:59 pmFSD Sioux Falls Joe Foss Field-BOI Boise Air Term. Gowen Fld

11h 59m2 stops Minneapolis St Paul Salt Lake City

$901Delta

Sun, Oct 4 - Tue, Oct 6

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United Airlines flights from Idaho to South Dakota

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

United Airlines

Oct 24

IDA5:51 pmIdaho Falls Fanning Field

4h 53m

1 stop

FSD11:44 pmSioux Falls Joe Foss Field

Oct 31

FSD9:32 amSioux Falls Joe Foss Field

7h 06m

1 stop

IDA3:38 pmIdaho Falls Fanning Field

$339

United Airlines

Oct 24

IDA5:51 pmIdaho Falls Fanning Field

4h 53m

1 stop

FSD11:44 pmSioux Falls Joe Foss Field

Oct 31

FSD6:00 amSioux Falls Joe Foss Field

10h 38m

2 stops

IDA3:38 pmIdaho Falls Fanning Field

$344

United Airlines

Oct 17

BOI2:44 pmBoise Air Term. Gowen Fld

4h 56m

1 stop

FSD8:40 pmSioux Falls Joe Foss Field

Oct 24

FSD1:46 pmSioux Falls Joe Foss Field

4h 57m

1 stop

BOI5:43 pmBoise Air Term. Gowen Fld

$349

Delta flights from Idaho to South Dakota

Our best Delta deals on Idaho to South Dakota flight tickets

Delta

Jan 16

BOI1:15 pmBoise Air Term. Gowen Fld

8h 36m

2 stops

FSD10:51 pmSioux Falls Joe Foss Field

Jan 20

FSD8:15 amSioux Falls Joe Foss Field

9h 34m

2 stops

BOI4:49 pmBoise Air Term. Gowen Fld

$382

Delta

Oct 16

BOI5:30 amBoise Air Term. Gowen Fld

5h 15m

1 stop

RAP10:45 amRapid City

Oct 19

RAP6:39 amRapid City

5h 56m

1 stop

BOI12:35 pmBoise Air Term. Gowen Fld

$399

Delta

Oct 8

BOI1:06 pmBoise Air Term. Gowen Fld

9h 16m

2 stops

FSD11:22 pmSioux Falls Joe Foss Field

Oct 13

FSD5:00 pmSioux Falls Joe Foss Field

7h 59m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

$449

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsSioux Falls

IDA Idaho Falls Fanning Field - FSD Sioux Falls Joe Foss Field

IDAFSD

Idaho Falls Fanning Field

Sat 10/24

5:51 pm-11:44 pm

1 stop4h 53m

Sioux Falls Joe Foss Field

Sat 10/31

9:32 am-3:38 pm

1 stop7h 06m

$339

Quickest round-trip

BoiseRapid City

BOI Boise Air Term. Gowen Fld - RAP Rapid City

BOIRAP

Boise Air Term. Gowen Fld

Sat 10/17

5:00 am-11:55 am

1 stop6h 55m

Rapid City

Fri 10/23

5:00 am-9:34 am

1 stop4h 34m

$339

BoiseRapid City

BOI Boise Air Term. Gowen Fld - RAP Rapid City

BOIRAP

Boise Air Term. Gowen Fld

Thu 11/12

5:30 am-1:43 pm

1 stop8h 13m

Rapid City

Tue 11/17

4:36 pm-11:59 pm

1 stop7h 23m

$339

Idaho FallsSioux Falls

IDA Idaho Falls Fanning Field - FSD Sioux Falls Joe Foss Field

IDAFSD

Idaho Falls Fanning Field

Sat 10/24

5:51 pm-11:44 pm

1 stop4h 53m

Sioux Falls Joe Foss Field

Sat 10/31

6:00 am-3:38 pm

2 stops10h 38m

$344

BoiseSioux Falls

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

BOIFSD

Boise Air Term. Gowen Fld

Sat 11/14

5:44 pm-11:44 pm

1 stop5h 00m

Sioux Falls Joe Foss Field

Sun 11/15

6:00 am-11:31 am

1 stop6h 31m

$344

BoiseSioux Falls

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

BOIFSD

Boise Air Term. Gowen Fld

Tue 10/27

12:14 pm-9:01 pm

1 stop7h 47m

Sioux Falls Joe Foss Field

Tue 11/3

2:26 pm-7:24 pm

1 stop5h 58m

$349

BoiseRapid City

BOI Boise Air Term. Gowen Fld - RAP Rapid City

BOIRAP

Boise Air Term. Gowen Fld

Thu 10/15

5:30 am-1:57 pm

1 stop8h 27m

Rapid City

Thu 10/22

4:38 pm-11:59 pm

1 stop7h 21m

$354

BoiseRapid City

BOI Boise Air Term. Gowen Fld - RAP Rapid City

BOIRAP

Boise Air Term. Gowen Fld

Fri 10/16

5:30 am-1:57 pm

1 stop8h 27m

Rapid City

Sun 10/18

6:39 am-12:35 pm

1 stop5h 56m

$354

BoiseRapid City

BOI Boise Air Term. Gowen Fld - RAP Rapid City

BOIRAP

Boise Air Term. Gowen Fld

Fri 10/23

12:14 pm-9:56 pm

1 stop9h 42m

Rapid City

Sat 11/14

6:11 am-1:51 pm

1 stop7h 40m

$365

BoiseRapid City

BOI Boise Air Term. Gowen Fld - RAP Rapid City

BOIRAP

Boise Air Term. Gowen Fld

Fri 10/23

12:14 pm-9:56 pm

1 stop9h 42m

Rapid City

Sat 11/14

6:11 am-1:51 pm

1 stop7h 40m

$405

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 November is, on average, the cheapest month to fly to South Dakota from Idaho, with most prices found around $369. If you aren’t able to travel to South Dakota during the month of November, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $398.

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

You could potentially save up to 33% 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	$138
Fastest flight time	4h 13m
Direct flights	None

The best one-way flight to South Dakota from Idaho in the past 72 hours is $138. The best round-trip flight deal from Idaho to South Dakota found on momondo in the last 72 hours is $339.

The fastest flight from Idaho to South Dakota takes 4h 13m

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

Search flight deals

Frequently asked questions about flying 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 2 operators available for flights from Idaho to South Dakota as of September 2026.
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 $284	Free Cancellation	Rating 7.4 10,256 reviews		Search United Airlines flights
Delta	PriceFrom $348	Free Cancellation	Rating 7.8 8,611 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.