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

Frontier, American Airlines, and United Airlines are the most popular carriers operating from South Dakota to Idaho

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 12m on average. Another popular route from South Dakota to Idaho is flying from Sioux Falls to Boise, which will take roughly 4h 42m. Keep in mind that layovers or delays could extend your travel time.

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 2 as of July 2025.

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.

$107 Cheap Flights from South Dakota to Idaho in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from South Dakota to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

5:30 am - 9:28 amRAP-IDA

3h 58m1 stop

5:57 pm - 10:08 pmIDA-RAP

4h 11m1 stop

$229United Airlines

Find Deal

mié., ene. 7 - sáb., ene. 10

11:50 am - 5:11 pmFSD-BOI

6h 21m1 stop

6:06 pm - 10:57 amBOI-FSD

15h 51m1 stop

$247

Find Deal

lun., ago. 18 - jue., ago. 21

6:25 am - 2:01 pmRAP-BOI

7h 36m1 stop

3:20 pm - 10:30 pmBOI-RAP

7h 10m1 stop

$249Delta

Find Deal

mié., sep. 3 - sáb., sep. 13

5:30 am - 12:32 pmFSD-GEG

9h 02m1 stop

1:14 pm - 11:59 pmGEG-FSD

8h 45m1 stop

$255American Airlines

Find Deal

mié., nov. 19 - dom., nov. 23

5:30 am - 9:46 amRAP-BOI

4h 16m1 stop

5:00 am - 9:04 amBOI-RAP

4h 04m1 stop

$259United Airlines

Find Deal

mié., ago. 13 - dom., ago. 17

11:16 am - 5:27 pmRAP-GEG

7h 11m1 stop

1:38 pm - 9:59 pmGEG-RAP

7h 21m1 stop

$259United Airlines

Find Deal

vie., ago. 15 - mar., ago. 19

10:48 am - 6:40 pmFSD-GEG

9h 52m2 stops

6:10 am - 1:51 pmGEG-FSD

5h 41m1 stop

$275Delta

Find Deal

sáb., sep. 27 - mié., oct. 1

6:05 am - 2:02 pmRAP-BOI

7h 57m1 stop

3:00 pm - 10:36 pmBOI-RAP

7h 36m1 stop

$275Delta

Find Deal

jue., nov. 6 - sáb., nov. 8

6:20 am - 2:01 pmRAP-BOI

7h 41m1 stop

3:06 pm - 10:32 pmBOI-RAP

7h 26m1 stop

$279Delta

Find Deal

jue., ago. 21 - sáb., ago. 23

5:07 pm - 9:49 pmFSD-GEG

6h 42m1 stop

1:12 pm - 10:42 pmGEG-FSD

7h 30m1 stop

$300American Airlines

Find Deal

jue., oct. 16 - mar., oct. 21

Delta flights from South Dakota to Idaho

Our best Delta deals on South Dakota to Idaho flight tickets

Delta

Sep 3

RAP6:25 amRapid City

7h 36m

1 stop

BOI2:01 pmBoise Air Term. Gowen Fld

Sep 13

BOI3:20 pmBoise Air Term. Gowen Fld

7h 10m

1 stop

RAP10:30 pmRapid City

$249

Find similar

Delta

Nov 6

RAP6:05 amRapid City

7h 57m

1 stop

BOI2:02 pmBoise Air Term. Gowen Fld

Nov 8

BOI3:00 pmBoise Air Term. Gowen Fld

7h 36m

1 stop

RAP10:36 pmRapid City

$275

Find similar

Delta

Aug 21

RAP6:20 amRapid City

7h 41m

1 stop

BOI2:01 pmBoise Air Term. Gowen Fld

Aug 23

BOI3:06 pmBoise Air Term. Gowen Fld

7h 26m

1 stop

RAP10:32 pmRapid City

$279

Find similar

United Airlines flights from South Dakota to Idaho

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

United Airlines

Jan 7

RAP5:30 amRapid City

3h 58m

1 stop

IDA9:28 amIdaho Falls Fanning Field

Jan 10

IDA5:57 pmIdaho Falls Fanning Field

4h 11m

1 stop

RAP10:08 pmRapid City

$229

Find similar

United Airlines

Aug 13

RAP5:30 amRapid City

4h 16m

1 stop

BOI9:46 amBoise Air Term. Gowen Fld

Aug 17

BOI5:00 amBoise Air Term. Gowen Fld

4h 04m

1 stop

RAP9:04 amRapid City

$259

Find similar

United Airlines

Aug 14

FSD2:00 pmSioux Falls Joe Foss Field

5h 07m

1 stop

BOI6:07 pmBoise Air Term. Gowen Fld

Aug 18

BOI5:42 pmBoise Air Term. Gowen Fld

4h 51m

1 stop

FSD11:33 pmSioux Falls Joe Foss Field

$289

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

mié. 1/7

5:30 am-9:28 am

1 stop3h 58m

Idaho Falls Fanning Field

sáb. 1/10

5:57 pm-10:08 pm

1 stop4h 11m

$229

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

lun. 8/18

11:50 am-5:11 pm

1 stop6h 21m

Boise Air Term. Gowen Fld

jue. 8/21

6:06 pm-10:57 am

1 stop15h 51m

$247

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

mié. 9/3

6:25 am-2:01 pm

1 stop7h 36m

Boise Air Term. Gowen Fld

sáb. 9/13

3:20 pm-10:30 pm

1 stop7h 10m

$249

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

mié. 11/19

5:30 am-12:32 pm

1 stop9h 02m

Spokane

dom. 11/23

1:14 pm-11:59 pm

1 stop8h 45m

$255

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

mié. 8/13

5:30 am-9:46 am

1 stop4h 16m

Boise Air Term. Gowen Fld

dom. 8/17

5:00 am-9:04 am

1 stop4h 04m

$259

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

vie. 8/15

11:16 am-5:27 pm

1 stop7h 11m

Spokane

mar. 8/19

1:38 pm-9:59 pm

1 stop7h 21m

$259

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

sáb. 9/27

10:48 am-6:40 pm

2 stops9h 52m

Spokane

mié. 10/1

6:10 am-1:51 pm

1 stop5h 41m

$275

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

jue. 11/6

6:05 am-2:02 pm

1 stop7h 57m

Boise Air Term. Gowen Fld

sáb. 11/8

3:00 pm-10:36 pm

1 stop7h 36m

$275

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

jue. 8/21

6:20 am-2:01 pm

1 stop7h 41m

Boise Air Term. Gowen Fld

sáb. 8/23

3:06 pm-10:32 pm

1 stop7h 26m

$279

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

jue. 10/16

5:07 pm-9:49 pm

1 stop6h 42m

Spokane

mar. 10/21

1:12 pm-10:42 pm

1 stop7h 30m

$300

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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, January 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 $283. If you don’t want to visit Idaho in January, then you should wait until October to fly from South Dakota, when ticket prices are also cheap, with an average price of $288.

What is the cheapest day to depart on your flight to Idaho?

Our data shows that Saturday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $354. On the other hand, Sunday is the most expensive day to depart from South Dakota because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $510.

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

According to our data, the cheapest time of day to fly to Idaho is in the evening. momondo users have found flights departing from South Dakota to Idaho in the evening for as low as $321. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Idaho, so prices are often more expensive at around $484 per ticket.

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

Best Price Found	$107
Fastest flight time	3h 58m
Direct flights	None
Airports in Idaho	4 airports

The best one-way flight to Idaho from South Dakota in the past 72 hours is $107. The best round-trip flight deal from South Dakota to Idaho found on momondo in the last 72 hours is $229.

The fastest flight from South Dakota to Idaho takes 3h 58m

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

There are 4 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Jackson Hole (JAC)

Search flight deals

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 2 as of July 2025.
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 $182	Free Cancellation	Rating 7.4 8,900 reviews		Search United Airlines flights
Delta	PriceFrom $195	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 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.