$251 Find Cheap Flights from Sioux Falls to Idaho

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux Falls to Idaho departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to Idaho, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to Idaho, as well as popular online travel agencies
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Best Idaho Flight Deals from Sioux Falls

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop$251
Spokane
Spokane1 stop$300
Boise
Boise1 stop$251
Spokane
Spokane1 stop$300

Cheap Flights from Sioux Falls to Idaho

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sioux Falls to Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sioux Falls to Idaho

Tue, Sep 16 - Tue, Sep 23
Delta Logo
7:30 pm - 11:38 pmFSD-BOI
5h 08m1 stop
Delta Logo
5:40 am - 12:31 pmBOI-FSD
5h 51m1 stop
$251Delta
Find Deal
Thu, Sep 18 - Tue, Sep 23
Delta Logo
7:30 pm - 11:38 pmFSD-BOI
5h 08m1 stop
Delta Logo
3:00 pm - 10:49 pmBOI-FSD
6h 49m1 stop
$255Delta
Find Deal
Fri, Sep 5 - Mon, Sep 8
American Airlines Logo
7:00 am - 12:48 pmFSD-BOI
6h 48m1 stop
American Airlines Logo
1:38 pm - 9:23 pmBOI-FSD
6h 45m1 stop
$259American Airlines
Find Deal
Thu, Sep 18 - Tue, Sep 23
American Airlines Logo
1:21 pm - 7:59 pmFSD-JAC
7h 38m1 stop
American Airlines Logo
7:39 am - 5:03 pmJAC-FSD
8h 24m1 stop
$294American Airlines
Find Deal
Sun, Aug 3 - Thu, Aug 7
Allegiant Air Logo
9:06 pm - 9:08 amFSD-GEG
14h 02m1 stop
Allegiant Air Logo
9:33 am - 11:07 amGEG-FSD
23h 34m1 stop
$309Allegiant Air
Find Deal
Sun, Aug 3 - Thu, Aug 7
 Logo
9:06 pm - 9:08 amFSD-GEG
14h 02m1 stop
 Logo
9:33 am - 8:49 pmGEG-FSD
33h 16m2 stops
Sat, Jul 19 - Fri, Jul 25
United Airlines Logo
5:10 pm - 9:34 pmFSD-BOI
5h 24m1 stop
United Airlines Logo
5:42 pm - 11:37 pmBOI-FSD
4h 55m1 stop
$329United Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24
United Airlines Logo
6:00 am - 1:30 pmFSD-BOI
8h 30m2 stops
United Airlines Logo
2:45 pm - 11:40 pmBOI-FSD
7h 55m2 stops
$331United Airlines
Find Deal
Thu, Jul 31 - Thu, Aug 7
 Logo
9:06 pm - 9:08 amFSD-GEG
14h 02m1 stop
 Logo
9:33 am - 8:49 pmGEG-FSD
33h 16m2 stops
Thu, Jul 31 - Thu, Aug 7
Allegiant Air Logo
9:06 pm - 9:08 amFSD-GEG
14h 02m1 stop
Allegiant Air Logo
9:33 am - 11:07 amGEG-FSD
23h 34m1 stop
$345Allegiant Air
Find Deal
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KAYAK's insights & trends for Sioux Falls to Idaho flights

Get data-powered insights and trends into flights from Sioux Falls to Idaho to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Sioux Falls to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sioux Falls to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sioux Falls to Idaho is January, when tickets cost $283 (return) on average. On the other hand, the most expensive months are December and August, when the average cost of round-trip tickets is $692 and $510 respectively.

What’s the cheapest day of the week to fly from Sioux Falls to Idaho?

The average price of all round-trip flights from Sioux Falls to Idaho clicked on KAYAK for each day over the last 12 months.

When flying from Sioux Falls to Idaho, you should consider leaving on a Saturday and avoid Sundays if you are looking for the best rates. For your return to Sioux Falls, you’ll find the best rates on Saturdays and the most expensive ones on Mondays.


Good to know

Low seasonMay
High seasonJuly
Cheapest flight$251
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 13% increase in price.
Flight from Sioux Falls to Boise

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Sioux Falls to Idaho?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sioux Falls to Idaho.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sioux Falls to Idaho?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Sioux Falls to Idaho is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sioux Falls to Idaho?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Sioux Falls to Idaho with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sioux Falls to Idaho?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Sioux Falls to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Idaho?

    The cheapest time of day to fly to Idaho is generally at night, when round-trip flights cost $321 on average. Morning departures are around 25% more expensive than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $484.

Top airlines flying from Sioux Falls to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Sioux Falls to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sioux Falls to Idaho? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7963 reviews
7.3Food
8.5Crew
7.9Entertainment
7.9Comfort
8.2Boarding
Airline reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

4.0 OkayKoonj, Jun 2025MSP - AUS
Read more Delta reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

United airlines, mediocre at best. No issues , nothing great . Worked for me

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

Everything you need to know for your flight from Sioux Falls to Idaho

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