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

United Airlines can get you from Idaho Falls to South Dakota in just under 4h 16m. Your travel time can differ by up to . Airlines will cover a distance of 450 mi.

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.

$369+ Cheap Flights from Idaho Falls to South Dakota

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Cheap flight deals from Idaho Falls to South Dakota

Cheapest

Best

Last-minute

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 14, 2026.

Sun 10/255:40 pm -

1 stop4h 50m

Sun 11/15:00 am -

1 stop4h 53m

Deal found 9/10

$434

Thu 9/242:28 pm -

1 stop6h 24m

Mon 9/285:00 am -

1 stop4h 53m

Deal found 9/9

$540

Fri 9/254:05 pm -

1 stop4h 47m

Tue 9/295:00 am -

1 stop4h 53m

Deal found 9/10

$582

Wed 11/253:18 pm -

1 stop18h 55m

Mon 11/309:13 am -

1 stop27h 48m

Deal found 9/11

$689

Wed 11/255:30 pm -

2 stops17h 01m

Mon 11/305:50 pm -

1 stop19h 47m

Deal found 9/11

$818

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 14, 2026.

Sat 2/64:17 pm -

1 stop4h 16m

Tue 2/97:05 am -

1 stop6h 30m

Deal found 9/10

$369

Sun 10/255:40 pm -

1 stop4h 50m

Sun 11/15:00 am -

1 stop4h 53m

Deal found 9/9

$434

Thu 9/242:28 pm -

1 stop6h 24m

Mon 9/285:00 am -

1 stop4h 53m

Deal found 9/9

$540

Fri 9/254:05 pm -

1 stop4h 47m

Tue 9/295:00 am -

1 stop4h 53m

Deal found 9/10

$582

Wed 11/255:30 pm -

2 stops17h 01m

Mon 11/305:50 pm -

1 stop19h 47m

Deal found 9/11

$818

Find flight deals from Idaho Falls to South Dakota

Round-trip from	$369 (United Airlines)

From Idaho Falls Fanning Field to South Dakota

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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

Cheapest round-trip

Idaho FallsRapid City

IDA Idaho Falls Fanning Field - RAP Rapid City

IDARAP

Idaho Falls Fanning Field

Sat 2/6

4:17 pm-8:33 pm

1 stop4h 16m

Rapid City

Tue 2/9

7:05 am-1:35 pm

1 stop6h 30m

$369

Idaho FallsRapid City

IDA Idaho Falls Fanning Field - RAP Rapid City

IDARAP

Idaho Falls Fanning Field

Sun 10/25

5:40 pm-10:30 pm

1 stop4h 50m

Rapid City

Sun 11/1

5:00 am-9:53 am

1 stop4h 53m

$434

Idaho FallsRapid City

IDA Idaho Falls Fanning Field - RAP Rapid City

IDARAP

Idaho Falls Fanning Field

Thu 9/24

2:28 pm-8:52 pm

1 stop6h 24m

Rapid City

Mon 9/28

5:00 am-9:53 am

1 stop4h 53m

$540

Quickest round-trip

Idaho FallsRapid City

IDA Idaho Falls Fanning Field - RAP Rapid City

IDARAP

Idaho Falls Fanning Field

Fri 9/25

4:05 pm-8:52 pm

1 stop4h 47m

Rapid City

Tue 9/29

5:00 am-9:53 am

1 stop4h 53m

$582

Idaho FallsRapid City

IDA Idaho Falls Fanning Field - RAP Rapid City

IDARAP

Idaho Falls Fanning Field

Wed 11/25

5:30 pm-10:31 am

2 stops17h 01m

Rapid City

Mon 11/30

5:50 pm-1:37 pm

1 stop19h 47m

$818

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Sorted by cheapest first

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.

IDA-RAP

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

IDA-USSD

IDA-RAP

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

10,213 reviews

Reviews

1 / 20

8.0

Excellent

Asha,Sep 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.

United Airlines

7.4

Good

10,213 reviews

United Airlines

7.4

Good

10,213 reviews

Reviews

1 / 20

8.0

Excellent

Asha,Sep 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.

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 can get you from Idaho Falls to South Dakota in just under 4h 16m. Your travel time can differ by up to . Airlines will cover a distance of 450 mi.
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.

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Top airline flying from Idaho Falls to South Dakota

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$364	Average$685	FlexibilityNo cancel fee	On-time69%

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$369+ 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 2/6. 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

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 14, 2026.

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 14, 2026.

Best flights from Idaho Falls to South DakotaDiscover 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 14, 2026.

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 14, 2026.

Last-minute flights from Idaho Falls to South DakotaDiscover last-minute flight deals from Idaho Falls to South Dakota. Data last updated September 14, 2026 and is based on user searches.

Discover last-minute flight deals from Idaho Falls to South Dakota. Data last updated September 14, 2026 and is based on user searches.

Find flight deals from Idaho Falls to South Dakota

Round-trip from

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

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

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?

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.

Complete your trip

Complete your trip to South Dakota by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Idaho Falls to South Dakota by cabin class

Find flights from Idaho Falls to South Dakota, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Idaho Falls and South Dakota flights

Browse other Idaho Falls and South Dakota flight options. Last updated on September 14, 2026.

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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 14, 2026.

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 14, 2026.

Last-minute flights from Idaho Falls to South Dakota
Discover last-minute flight deals from Idaho Falls to South Dakota. Data last updated September 14, 2026 and is based on user searches.