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Cheap flights from Idaho Falls to South Dakota from $349

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to South Dakota departing on 3/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Idaho Falls to South Dakota

Cheap round-trip flights

United Airlines Logo
2:35 pm - 8:33 pmIDA-RAP
5h 58m1 stop
United Airlines Logo
5:30 am - 9:28 amRAP-IDA
3h 58m1 stop
$349United Airlines
Find Deal
Sat, Mar 7 - Wed, Mar 11
United Airlines Logo
5:00 am - 9:10 amIDA-RAP
4h 10m1 stop
United Airlines Logo
5:30 am - 9:48 amRAP-IDA
4h 18m1 stop
$455United Airlines
Find Deal
Mon, Oct 20 - Thu, Oct 23
United Airlines Logo
5:56 pm - 10:12 pmIDA-RAP
4h 16m1 stop
United Airlines Logo
11:15 am - 5:15 pmRAP-IDA
6h 00m1 stop
$559United Airlines
Find Deal
Sun, Oct 5 - Thu, Oct 9
United Airlines Logo
5:56 pm - 10:12 pmIDA-RAP
4h 16m1 stop
United Airlines Logo
1:44 pm - 9:48 amRAP-IDA
44h 04m2 stops
$587United Airlines
Find Deal
Mon, Oct 20 - Thu, Oct 23
United Airlines Logo
5:56 pm - 10:13 amIDA-RAP
16h 17m3 stops
United Airlines Logo
5:30 am - 9:48 amRAP-IDA
4h 18m1 stop
$638United Airlines
Find Deal
Mon, Oct 20 - Thu, Oct 23
United Airlines Logo
5:00 am - 9:10 amIDA-RAP
4h 10m1 stop
United Airlines Logo
1:44 pm - 9:48 amRAP-IDA
44h 04m2 stops
$747United Airlines
Find Deal
Sun, Oct 5 - Thu, Oct 9
American Airlines Logo
8:19 am - 8:11 pmIDA-RAP
11h 52m2 stops
American Airlines Logo
12:35 pm - 9:57 pmRAP-IDA
9h 22m2 stops
$832American Airlines
Find Deal
Sat, Mar 7 - Wed, Mar 11
American Airlines Logo
8:19 am - 8:11 pmIDA-RAP
11h 52m2 stops
American Airlines Logo
5:51 am - 12:22 pmRAP-IDA
6h 31m1 stop
$866American Airlines
Find Deal
Sat, Mar 7 - Wed, Mar 11

United Airlines flights from Idaho Falls to South Dakota

Our best United Airlines deals on Idaho Falls to South Dakota flight tickets
United Airlines
Mar 7
IDA2:35 pmIdaho Falls Fanning Field
5h 58m
1 stop
RAP8:33 pmRapid City
Mar 11
RAP5:30 amRapid City
3h 58m
1 stop
IDA9:28 amIdaho Falls Fanning Field
$349
Find similar
United Airlines
Oct 20
IDA5:00 amIdaho Falls Fanning Field
4h 10m
1 stop
RAP9:10 amRapid City
Oct 23
RAP5:30 amRapid City
4h 18m
1 stop
IDA9:48 amIdaho Falls Fanning Field
$455
Find similar
United Airlines
Oct 5
IDA5:56 pmIdaho Falls Fanning Field
4h 16m
1 stop
RAP10:12 pmRapid City
Oct 9
RAP11:15 amRapid City
6h 00m
1 stop
IDA5:15 pmIdaho Falls Fanning Field
$559
Find similar

American Airlines flights from Idaho Falls to South Dakota

Our best American Airlines deals on Idaho Falls to South Dakota flight tickets
American Airlines
Mar 7
IDA8:19 amIdaho Falls Fanning Field
11h 52m
2 stops
RAP8:11 pmRapid City
Mar 11
RAP12:35 pmRapid City
9h 22m
2 stops
IDA9:57 pmIdaho Falls Fanning Field
$832
Find similar
American Airlines
Mar 7
IDA8:19 amIdaho Falls Fanning Field
11h 52m
2 stops
RAP8:11 pmRapid City
Mar 11
RAP5:51 amRapid City
6h 31m
1 stop
IDA12:22 pmIdaho Falls Fanning Field
$866
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Idaho Falls to South Dakota 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, momondo users made 832,500 searches. Data last updated September 22, 2025.
Use the filters below to find and compare flights from Idaho Falls to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sat 3/7

2:35 pm-8:33 pm

1 stop5h 58m

Rapid City

Wed 3/11

5:30 am-9:28 am

1 stop3h 58m

$349

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Mon 10/20

5:00 am-9:10 am

1 stop4h 10m

Rapid City

Thu 10/23

5:30 am-9:48 am

1 stop4h 18m

$455

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sun 10/5

5:56 pm-10:12 pm

1 stop4h 16m

Rapid City

Thu 10/9

11:15 am-5:15 pm

1 stop6h 00m

$559

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Mon 10/20

5:56 pm-10:12 pm

1 stop4h 16m

Rapid City

Thu 10/23

1:44 pm-9:48 am

2 stops44h 04m

$587

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Mon 10/20

5:56 pm-10:13 am

3 stops16h 17m

Rapid City

Thu 10/23

5:30 am-9:48 am

1 stop4h 18m

$638

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sun 10/5

5:00 am-9:10 am

1 stop4h 10m

Rapid City

Thu 10/9

1:44 pm-9:48 am

2 stops44h 04m

$747

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sat 3/7

8:19 am-8:11 pm

2 stops11h 52m

Rapid City

Wed 3/11

12:35 pm-9:57 pm

2 stops9h 22m

$832

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sat 3/7

8:19 am-8:11 pm

2 stops11h 52m

Rapid City

Wed 3/11

5:51 am-12:22 pm

1 stop6h 31m

$866

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to South Dakota from

How to get the cheapest flight ticket from Idaho Falls 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

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 at noon when flights can be purchased for as low as $256. In the afternoon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $410 per ticket.

Cheap Idaho Falls to South Dakota flight deals and tips

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

Direct flights

None
There are no direct flights from Idaho Falls to South Dakota. There are no popular flight routes from Idaho Falls to South Dakota.
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  • When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to South Dakota?

    Prices for flights from Idaho Falls Fanning Field Airport to South Dakota are refreshed on a daily basis.

  • How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to South Dakota?

  • How old do you have to be to fly from Idaho Falls Fanning Field Airport to South Dakota?

    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 Idaho Falls Fanning Field Airport to South Dakota.

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

    The travel and health documents you'll need for your trip to South Dakota 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 South Dakota. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Idaho Falls to South Dakota

Compare and see reviews for airlines that fly from Idaho Falls to South Dakota with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $228Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights

Why use momondo?

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

Finding the right flight to South Dakota from Idaho Falls 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 South Dakota quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Idaho Falls to South Dakota flights to just show those with flexible booking policies.

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

Once all potential Idaho Falls to South Dakota flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Idaho Falls to South Dakota now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to South Dakota and let you know when they change.

An easier way to manage your South Dakota trip

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