What is the cheapest month to book a flight from Idaho Falls to South Dakota?

Currently, September is the cheapest month in which you can book a flight from Idaho Falls to South Dakota (average of $334). Flying from Idaho Falls to South Dakota in December is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IDA to SD?

When flying from Idaho Falls to South Dakota, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Idaho Falls to South Dakota?

Located just 3.8 mi from the city center, Idaho Falls Fanning Field (IDA) is the airport most travelers will use when flying to South Dakota from Idaho Falls.

Can I find deals for flights from Idaho Falls to South Dakota that include hotel bookings?

Yes. In addition to deals on Idaho Falls to South Dakota flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Idaho Falls to South Dakota?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to South Dakota.

Can I find deals for business class flights from Idaho Falls to South Dakota?

Yes. Cheapflights offers flight deals from Idaho Falls to South Dakota by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$294+ Flights from Idaho Falls to South Dakota

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Cheap flight deals from Idaho Falls to South Dakota

Round-trip from	$294 (United Airlines)

From Idaho Falls Fanning Field to South Dakota

Search Deals

Find flight deals from Idaho Falls to South Dakota

Cheapest flights from Idaho Falls to South Dakota
Explore the most affordable flight options available from Idaho Falls to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 16, 2025.

vie. 7/44:13 pmIDA - RAP

1 stop4h 43mUnited Airlines

vie. 7/115:59 pmRAP - IDA

1 stop4h 52mUnited Airlines

Deal found 6/16

$294

vie. 7/41:09 pmIDA - RAP

2 stops9h 22mDelta

vie. 7/112:25 pmRAP - IDA

2 stops8h 04mDelta

Deal found 6/16

$1,644

Best flights from Idaho Falls to South Dakota
Discover carefully curated flight deals from Idaho Falls to South Dakota that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated junio 16, 2025.

vie. 7/44:13 pmIDA - RAP

1 stop4h 43mUnited Airlines

vie. 7/115:59 pmRAP - IDA

1 stop4h 52mUnited Airlines

Deal found 6/16

$294

vie. 7/41:09 pmIDA - RAP

2 stops9h 22mDelta

vie. 7/112:25 pmRAP - IDA

2 stops8h 04mDelta

Deal found 6/16

$1,644

Last-minute flights from Idaho Falls to South Dakota
Discover last-minute flight deals from Idaho Falls to South Dakota. Data last updated junio 16, 2025 and is based on user searches.

vie. 7/44:13 pmIDA - RAP

1 stop4h 43mUnited Airlines

vie. 7/115:59 pmRAP - IDA

1 stop4h 52mUnited Airlines

Deal found 6/16

$294

vie. 7/41:09 pmIDA - RAP

2 stops9h 22mDelta

vie. 7/112:25 pmRAP - IDA

2 stops8h 04mDelta

Deal found 6/16

$1,644

One-way flights from Idaho Falls to South Dakota
Search for one-way flight options from Idaho Falls to South Dakota. Find affordable one-way fares based on user searches. Data last updated junio 16, 2025.

sáb. 6/2110:55 amIDA - RAP

1 stop6h 15mUnited Airlines

Deal found 6/16

$395

Cheapflights Fare Finder

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

vie. 7/4

4:13 pm-8:56 pm

1 stop4h 43m

Rapid City

vie. 7/11

5:59 pm-10:51 pm

1 stop4h 52m

$294

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

vie. 7/4

1:09 pm-10:31 pm

2 stops9h 22m

Rapid City

vie. 7/11

2:25 pm-10:29 pm

2 stops8h 04m

$1,644

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

sáb. 6/21

10:55 am-5:10 pm

1 stop6h 15m

$395

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Best time to book a flight from Idaho Falls to South Dakota

Have a flexible travel schedule? Discover the best time to fly to South Dakota from Idaho Falls with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho Falls to South Dakota

Rainfall in South Dakota by month

In terms of precipitation, rainfall in South Dakota ranges from 0.6 - 3.9 inches per month. June is typically the wettest month, when rainfall can reach 3.9 in. January is typically the driest time to visit South Dakota when rainfall is around 0.6 in.

Temperature in South Dakota by month

If weather is an important factor for your trip to South Dakota, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

Reviews of airlines servicing South Dakota

Delta

8.0

Very good

7,963 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,963 reviews

Delta

8.0

Very good

7,963 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,801 reviews

Delta

8.0

Very good

7,963 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly from for flights from Idaho Falls to South Dakota?
Located just 3.8 mi from the city center, Idaho Falls Fanning Field (IDA) is the airport most travelers will use when flying to South Dakota from Idaho Falls.
Can I find deals for flights from Idaho Falls to South Dakota that include hotel bookings?
Yes. In addition to deals on Idaho Falls to South Dakota flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho Falls to South Dakota?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to South Dakota.
Can I find deals for business class flights from Idaho Falls to South Dakota?
Yes. Cheapflights offers flight deals from Idaho Falls to South Dakota by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Idaho Falls to South Dakota?
Currently, September is the cheapest month in which you can book a flight from Idaho Falls to South Dakota (average of $334). Flying from Idaho Falls to South Dakota in December is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Idaho Falls to South Dakota

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$228	Average$331	FlexibilityNo cancel fee	On-time69%

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$294+ Cheap flights from Idaho Falls (IDA) to South Dakota

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho Falls to South Dakota with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Idaho Falls to South Dakota

Keep the following information in mind while searching for Idaho Falls to South Dakota flight deals. Data was last updated junio 16, 2025.

Round-trip from

Find flight deals from Idaho Falls to South Dakota

Cheapest flights from Idaho Falls to South DakotaExplore the most affordable flight options available from Idaho Falls to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 16, 2025.

Explore the most affordable flight options available from Idaho Falls to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho Falls to South Dakota that are best for you.

Best time to book a flight from Idaho Falls to South Dakota

Have a flexible travel schedule? Discover the best time to fly to South Dakota from Idaho Falls with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Idaho Falls to South Dakota

Rainfall in South Dakota by month

Plan your trip to South Dakota by taking into account the average rainfall totals by month.

Temperature in South Dakota by month

Plan your trip to South Dakota by taking into account the average temperature totals by month.

Reviews of airlines servicing South Dakota

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to South Dakota. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Idaho Falls to South Dakota?

Can I find deals for flights from Idaho Falls to South Dakota that include hotel bookings?

How can I find direct flights from Idaho Falls to South Dakota?

Can I find deals for business class flights from Idaho Falls to South Dakota?

What is the cheapest month to book a flight from Idaho Falls to South Dakota?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho Falls to South Dakota

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Idaho Falls to South Dakota

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Idaho Falls to South Dakota
Explore the most affordable flight options available from Idaho Falls to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 16, 2025.