$188+ Cheap flights from Idaho to South Dakota
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — FSD
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to South Dakota with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Idaho to South Dakota
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Cheapest flights from Idaho to South DakotaExplore the most affordable flight options available from Idaho to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 5, 2026.
Explore the most affordable flight options available from Idaho to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 5, 2026.
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:44 pm -
1 stop5h 53m
Sat 8/295:58 pm -
1 stop4h 42m
Deal found 8/2![United Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:00 am -
1 stop5h 55m
Tue 9/111:22 am -
1 stop4h 44m
Deal found 7/31![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:53 pm -
1 stop6h 58m
Mon 8/318:22 am -
1 stop6h 20m
Deal found 8/1![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:10 pm -
1 stop5h 34m
Sun 11/159:32 am -
1 stop5h 15m
Deal found 7/31![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:15 am -
2 stops9h 08m
Wed 9/96:50 pm -
1 stop4h 50m
Deal found 8/3![United Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:09 pm -
2 stops8h 35m
Sat 9/125:15 pm -
1 stop5h 59m
Deal found 8/3![United Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:33 pm -
2 stops9h 11m
Tue 9/111:25 am -
2 stops9h 26m
Deal found 7/31![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:44 pm -
1 stop4h 44m
Sun 8/305:00 am -
1 stop4h 35m
Deal found 7/31![United Airlines logo]()
$341
This American Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:44 pm -
1 stop7h 51m
Sat 9/512:39 pm -
1 stop9h 03m
Deal found 7/31![American Airlines logo]()
$345
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:05 pm -
1 stop6h 25m
Tue 9/295:00 am -
1 stop4h 53m
Deal found 8/3![United Airlines logo]()
$346
This American Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:45 pm -
1 stop7h 10m
Tue 11/101:08 pm -
1 stop9h 32m
Deal found 7/31![American Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/201:55 pm -
1 stop8h 53m
Tue 8/258:30 am -
1 stop5h 54m
Deal found 8/4![American Airlines logo]()
$354
Best flights from Idaho to South DakotaDiscover carefully curated flight deals from Idaho to South Dakota that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals from Idaho to South Dakota that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:44 pm -
1 stop5h 53m
Sat 8/295:58 pm -
1 stop4h 42m
Deal found 8/2![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:30 am -
1 stop5h 39m
Mon 10/265:00 pm -
1 stop7h 59m
Deal found 8/2![Delta logo]()
$329
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:45 pm -
1 stop7h 06m
Tue 11/106:00 am -
2 stops12h 39m
Deal found 8/2![American Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:00 am -
1 stop4h 44m
Sat 9/191:33 pm -
1 stop5h 25m
Deal found 8/3![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:54 pm -
2 stops12h 26m
Mon 9/78:22 am -
1 stop6h 35m
Deal found 8/3![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:41 pm -
1 stop4h 26m
Tue 9/156:00 am -
1 stop4h 35m
Deal found 7/31![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:54 pm -
1 stop5h 50m
Tue 9/15:05 pm -
1 stop5h 41m
Deal found 7/31![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/262:05 pm -
1 stop7h 32m
Tue 9/12:32 pm -
2 stops10h 27m
Deal found 7/31![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:54 pm -
1 stop5h 50m
Sat 10/105:04 pm -
1 stop5h 45m
Deal found 8/3![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:54 pm -
1 stop5h 50m
Sat 9/129:35 am -
1 stop5h 00m
Deal found 8/3![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/42:05 pm -
1 stop7h 32m
Sat 9/56:48 am -
2 stops10h 21m
Deal found 8/3![Delta logo]()
$444
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:33 pm -
2 stops9h 11m
Wed 9/21:33 pm -
2 stops11h 03m
Deal found 7/31![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:44 pm -
1 stop4h 44m
Sun 8/305:00 am -
1 stop4h 35m
Deal found 7/31![United Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:05 pm -
1 stop6h 25m
Tue 9/295:00 am -
1 stop4h 53m
Deal found 8/3![United Airlines logo]()
$346
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:30 am -
1 stop5h 28m
Wed 11/187:00 am -
1 stop6h 45m
Deal found 8/4![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:51 pm -
1 stop5h 52m
Sat 11/77:00 am -
1 stop6h 45m
Deal found 8/1![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/241:40 pm -
1 stop6h 12m
Wed 10/284:10 pm -
1 stop6h 01m
Deal found 8/4![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:44 pm -
1 stop5h 00m
Mon 11/25:06 pm -
1 stop6h 53m
Deal found 8/3![United Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/82:43 pm -
1 stop5h 03m
Tue 1/121:45 pm -
2 stops11h 14m
Deal found 8/2![United Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:25 pm -
1 stop6h 12m
Mon 9/77:00 am -
1 stop6h 29m
Deal found 8/3![United Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:15 am -
2 stops9h 08m
Wed 9/96:00 am -
2 stops10h 31m
Deal found 8/3![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/131:45 pm -
1 stop5h 01m
Sat 1/165:00 pm -
1 stop6h 09m
Deal found 8/2![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:37 pm -
1 stop6h 00m
Sat 9/58:55 am -
1 stop7h 16m
Deal found 8/4![United Airlines logo]()
$426
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:40 pm -
1 stop4h 53m
Wed 9/305:00 am -
1 stop4h 34m
Deal found 8/3![United Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:54 pm -
1 stop5h 39m
Fri 9/187:00 am -
1 stop6h 35m
Deal found 7/31![United Airlines logo]()
$431
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:30 pm -
1 stop4h 13m
Sat 11/75:00 am -
1 stop4h 53m
Deal found 8/4![United Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/252:35 pm -
1 stop6h 08m
Sun 11/15:00 am -
1 stop4h 53m
Deal found 8/1![United Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:52 am -
2 stops10h 52m
Mon 8/3111:25 am -
2 stops10h 59m
Deal found 8/5![United Airlines logo]()
$470
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:00 am -
1 stop4h 43m
Sun 8/236:00 am -
2 stops10h 31m
Deal found 8/5![United Airlines logo]()
$554
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:50 pm -
2 stops17h 36m
Tue 10/205:00 am -
1 stop4h 34m
Deal found 8/4![United Airlines logo]()
$557
Last-minute flights from Idaho to South DakotaDiscover last-minute flight deals from Idaho to South Dakota. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to South Dakota. Data last updated August 5, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/201:55 pm -
1 stop8h 53m
Tue 8/258:30 am -
1 stop5h 54m
Deal found 8/4![American Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:00 am -
1 stop5h 55m
Tue 9/111:22 am -
1 stop4h 44m
Deal found 7/31![United Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:33 pm -
2 stops9h 11m
Tue 9/111:25 am -
2 stops9h 26m
Deal found 7/31![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:44 pm -
1 stop5h 53m
Sat 8/295:58 pm -
1 stop4h 42m
Deal found 8/2![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:53 pm -
1 stop6h 58m
Mon 8/318:22 am -
1 stop6h 20m
Deal found 8/1![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:44 pm -
1 stop4h 44m
Sun 8/305:00 am -
1 stop4h 35m
Deal found 7/31![United Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:00 am -
1 stop5h 39m
Wed 9/25:05 pm -
1 stop5h 41m
Deal found 7/31![United Airlines logo]()
$356
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:15 am -
2 stops9h 08m
Wed 9/96:50 pm -
1 stop4h 50m
Deal found 8/3![United Airlines logo]()
$334
This American Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:44 pm -
1 stop7h 51m
Sat 9/512:39 pm -
1 stop9h 03m
Deal found 7/31![American Airlines logo]()
$345
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:20 am -
1 stop6h 20m
Tue 9/88:30 am -
1 stop7h 39m
Deal found 8/4![American Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:54 pm -
1 stop5h 50m
Sat 9/129:35 am -
1 stop5h 00m
Deal found 8/3![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:05 pm -
1 stop6h 25m
Tue 9/295:00 am -
1 stop4h 53m
Deal found 8/3![United Airlines logo]()
$346
One-way flights from Idaho to South DakotaSearch for one-way flight options from Idaho to South Dakota. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from Idaho to South Dakota. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:52 pm -
1 stop9h 01m
Deal found 8/3![American Airlines logo]()
$188
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:36 am -
2 stops11h 36m
Deal found 8/3![United Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:24 pm -
2 stops25h 22m
Deal found 8/1![Multiple Airlines logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:37 pm -
1 stop6h 00m
Deal found 8/3![United Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:24 pm -
2 stops20h 28m
Deal found 8/2![Multiple Airlines logo]()
$302
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:43 pm -
1 stop7h 13m
Deal found 8/1![United Airlines logo]()
$309
This American Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:20 am -
1 stop6h 20m
Deal found 8/5![American Airlines logo]()
$309
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:00 am -
2 stops12h 07m
Deal found 8/5![United Airlines logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:24 pm -
1 stop28h 59m
Deal found 8/2![Frontier logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2911:13 pm -
1 stop20h 42m
Deal found 8/1![Multiple Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/151:53 pm -
1 stop8h 00m
Deal found 8/1![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:16 am -
2 stops9h 33m
Deal found 7/31![Delta logo]()
$323
Find flight deals from Idaho to South Dakota
Keep the following information in mind while searching for Idaho to South Dakota flight deals. Data was last updated August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $319 (United Airlines) |
One-way from | $188 (American Airlines) |
Popular in | June |
Cheapest in | September |
Average price | $423 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho 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, Cheapflights users made 2,558,603 searches. Data last updated August 5, 2026.
Use the filters below to find and compare flights from Idaho to South Dakota that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseRapid City
BOI Boise Air Term. Gowen Fld - RAP Rapid City
BOIRAP
Boise Air Term. Gowen Fld
Fri 8/28
2:44 pm-8:37 pm
1 stop5h 53m
Rapid City
Sat 8/29
5:58 pm-10:40 pm
1 stop4h 42m
$319
BoiseSioux Falls
BOI Boise Air Term. Gowen Fld - FSD Sioux Falls Joe Foss Field
BOIFSD
Boise Air Term. Gowen Fld
Wed 10/14
5:30 am-12:09 pm
1 stop5h 39m
Sioux Falls Joe Foss Field
Mon 10/26
5:00 pm-11:59 pm
1 stop7h 59m
$329
BoiseSioux Falls
BOI Boise Air Term. Gowen Fld - FSD Sioux Falls Joe Foss Field
BOIFSD
Boise Air Term. Gowen Fld
Thu 9/10
5:00 am-10:44 am
1 stop4h 44m
Sioux Falls Joe Foss Field
Sat 9/19
1:33 pm-5:58 pm
1 stop5h 25m
$329
Quickest round-trip
BoiseSioux Falls
BOI Boise Air Term. Gowen Fld - FSD Sioux Falls Joe Foss Field
BOIFSD
Boise Air Term. Gowen Fld
Wed 9/9
2:41 pm-8:07 pm
1 stop4h 26m
Sioux Falls Joe Foss Field
Tue 9/15
6:00 am-9:35 am
1 stop4h 35m
$329
SpokaneSioux Falls
GEG Spokane - FSD Sioux Falls Joe Foss Field
GEGFSD
Spokane
Wed 8/26
3:54 pm-11:44 pm
1 stop5h 50m
Sioux Falls Joe Foss Field
Tue 9/1
5:05 pm-8:46 pm
1 stop5h 41m
$329
SpokaneSioux Falls
GEG Spokane - FSD Sioux Falls Joe Foss Field
GEGFSD
Spokane
Wed 9/9
3:54 pm-11:44 pm
1 stop5h 50m
Sioux Falls Joe Foss Field
Sat 10/10
5:04 pm-8:49 pm
1 stop5h 45m
$329
SpokaneSioux Falls
GEG Spokane - FSD Sioux Falls Joe Foss Field
GEGFSD
Spokane
Wed 9/9
3:54 pm-11:44 pm
1 stop5h 50m
Sioux Falls Joe Foss Field
Sat 9/12
9:35 am-12:35 pm
1 stop5h 00m
$329
SpokaneSioux Falls
GEG Spokane - FSD Sioux Falls Joe Foss Field
GEGFSD
Spokane
Tue 9/1
7:54 pm-10:20 am
2 stops12h 26m
Sioux Falls Joe Foss Field
Mon 9/7
8:22 am-12:57 pm
1 stop6h 35m
$334
SpokaneSioux Falls
GEG Spokane - FSD Sioux Falls Joe Foss Field
GEGFSD
Spokane
Fri 8/28
12:33 pm-11:44 pm
2 stops9h 11m
Sioux Falls Joe Foss Field
Wed 9/2
1:33 pm-10:36 pm
2 stops11h 03m
$339
BoiseRapid City
BOI Boise Air Term. Gowen Fld - RAP Rapid City
BOIRAP
Boise Air Term. Gowen Fld
Fri 8/28
5:44 pm-10:28 pm
1 stop4h 44m
Rapid City
Sun 8/30
5:00 am-9:35 am
1 stop4h 35m
$341
Showing 1-10 of 55 resultsSorted by cheapest first
Best time to book a flight from Idaho to South Dakota
Have a flexible travel schedule? Discover the best time to fly to South Dakota from Idaho with our price prediction graph.
BOI-RAP
GEG-RAP
BOI-FSD
GEG-FSD
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 to South Dakota
USID-USSD
BOI-RAP
GEG-RAP
BOI-FSD
GEG-FSD
What is the cheapest month to book a flight from Idaho to South Dakota?
Currently, November is the cheapest month in which you can book a flight from Idaho to South Dakota (average of $369). Flying from Idaho to South Dakota in June is currently the most expensive (average of $668). 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.
Reviews of airlines servicing South Dakota
Get insights into the airlines that provide service to South Dakota. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to South Dakota. Reviews last updated August 5, 2026.
See what other customers who have flown with Delta and United Airlines from Idaho to South Dakota have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Idaho to South Dakota. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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.
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Alternative routes for Idaho 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 to South Dakota by cabin class
Find flights from Idaho to South Dakota, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and South Dakota flights
Browse other Idaho and South Dakota flight options. Last updated on August 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from South Dakota
Find the right flight back to Idaho after your stay in South Dakota
Idaho to South Dakota flights
Consider these flights traveling from Idaho to South Dakota.
Top 2 airlines flying from Idaho to South Dakota
Discover the top 2 airlines that operate flights from Idaho to South Dakota. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$284 | Average$535 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$309 | Average$408 | FlexibilityNo cancel fee | On-timeN/A |