How long is the flight from Idaho Falls to South Dakota?

United Airlines and American Airlines can get you from Idaho Falls to South Dakota in just under 4h 10m. Your travel time can differ by up to 7h 42m. Airlines will cover a distance of 450 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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.

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.

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).

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.

$239+ Cheap Flights from Idaho Falls to South Dakota

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Cheap flight deals from Idaho Falls to South Dakota

Round-trip from	$239 (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 September 15, 2025.

Tue 9/305:00 amIDA - RAP

1 stop4h 10mUnited Airlines

Sat 10/45:30 amRAP - IDA

1 stop4h 18mUnited Airlines

Deal found 9/15

$239

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 September 15, 2025.

Tue 9/305:00 amIDA - RAP

1 stop4h 10mUnited Airlines

Sat 10/45:30 amRAP - IDA

1 stop4h 18mUnited Airlines

Deal found 9/15

$239

Sat 3/72:35 pmIDA - RAP

1 stop5h 58mUnited Airlines

Wed 3/115:30 amRAP - IDA

1 stop3h 58mUnited Airlines

Deal found 9/12

$349

Sat 3/78:19 amIDA - RAP

2 stops11h 52mAmerican Airlines

Wed 3/1112:35 pmRAP - IDA

2 stops9h 22mAmerican Airlines

Deal found 9/12

$832

Last-minute flights from Idaho Falls to South Dakota
Discover last-minute flight deals from Idaho Falls to South Dakota. Data last updated September 15, 2025 and is based on user searches.

Tue 9/305:00 amIDA - RAP

1 stop4h 10mUnited Airlines

Sat 10/45:30 amRAP - IDA

1 stop4h 18mUnited Airlines

Deal found 9/15

$239

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

Tue 9/30

5:00 am-9:10 am

1 stop4h 10m

Rapid City

Sat 10/4

5:30 am-9:48 am

1 stop4h 18m

$239

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

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing South Dakota

See what other customers who have flown with United Airlines from Idaho Falls to South Dakota have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,929 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines

7.4

Good

8,929 reviews

United Airlines

7.4

Good

8,929 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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.
How long is the flight from Idaho Falls to South Dakota?
United Airlines and American Airlines can get you from Idaho Falls to South Dakota in just under 4h 10m. Your travel time can differ by up to 7h 42m. Airlines will cover a distance of 450 mi. Both multi-stop and nonstop flights can be found to your destination and back.
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$300	FlexibilityNo cancel fee	On-time69%

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$239+ 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 9/30. 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 September 15, 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 September 15, 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 September 15, 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

Reviews of airlines servicing South Dakota

See what other customers who have flown with United Airlines from Idaho Falls to South Dakota have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

How long is the flight 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 September 15, 2025.