$228+ Cheap flights from South Dakota to Idaho
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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — BOI
Jul 13 — Jul 201
Round-trip
1 adult, Economy
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Cheapest flights from South Dakota to IdahoExplore the most affordable flight options available from South Dakota to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2026.
Explore the most affordable flight options available from South Dakota to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2026.
This Delta deal was found by Cheapflights users on 6/9. 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 8/54:30 pm
RAP
- GEG
2 stops8h 29m
Delta
Thu 8/136:45 am
GEG
- RAP
1 stop8h 04m
Delta
Deal found 6/9![Delta logo]()
$314
This Delta deal was found by Cheapflights users on 6/11. 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.
Sat 8/291:26 pm
FSD
- GEG
1 stop7h 58m
Delta
Sat 9/52:05 pm
GEG
- FSD
1 stop6h 46m
Delta
Deal found 6/11![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 8/208:22 am
FSD
- BOI
1 stop6h 20m
Delta
Sun 8/232:53 pm
BOI
- FSD
1 stop6h 58m
Delta
Deal found 6/11![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 9/178:23 am
FSD
- GEG
1 stop6h 30m
Delta
Mon 9/217:46 pm
GEG
- FSD
2 stops12h 33m
Delta
Deal found 6/11![Delta logo]()
$324
This Delta deal was found by Cheapflights users on 6/9. 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 9/161:05 pm
FSD
- BOI
2 stops11h 53m
Delta
Sat 9/192:50 pm
BOI
- FSD
1 stop7h 01m
Delta
Deal found 6/9![Delta logo]()
$334
This American Airlines deal was found by Cheapflights users on 6/12. 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 9/102:10 pm
FSD
- BOI
1 stop8h 53m
American Airlines
Mon 9/146:30 am
BOI
- FSD
1 stop6h 09m
American Airlines
Deal found 6/12![American Airlines logo]()
$344
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/111:20 am
RAP
- GEG
1 stop4h 52m
United Airlines
Wed 8/54:18 pm
GEG
- RAP
1 stop5h 07m
United Airlines
Deal found 6/12![United Airlines logo]()
$348
This American Airlines deal was found by Cheapflights users on 6/9. 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 9/1712:56 pm
FSD
- GEG
1 stop9h 29m
American Airlines
Mon 9/211:45 pm
GEG
- FSD
1 stop8h 03m
American Airlines
Deal found 6/9![American Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 6/10. 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 8/288:22 am
FSD
- BOI
2 stops10h 33m
Delta
Sat 9/510:58 am
BOI
- FSD
2 stops7h 31m
Delta
Deal found 6/10![Delta logo]()
$352
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 8/512:57 pm
FSD
- GEG
1 stop9h 45m
American Airlines
Mon 8/105:20 am
GEG
- FSD
1 stop6h 20m
American Airlines
Deal found 6/10![American Airlines logo]()
$361
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/2811:35 am
FSD
- BOI
2 stops11h 30m
United Airlines
Sat 8/15:46 pm
BOI
- FSD
1 stop5h 07m
United Airlines
Deal found 6/9![United Airlines logo]()
$361
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 7/155:34 pm
FSD
- BOI
1 stop6h 47m
American Airlines
Wed 7/221:57 pm
BOI
- FSD
1 stop9h 00m
American Airlines
Deal found 6/10![American Airlines logo]()
$365
Best flights from South Dakota to IdahoDiscover carefully curated flight deals from South Dakota to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2026.
Discover carefully curated flight deals from South Dakota to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2026.
This United Airlines deal was found by Cheapflights users on 6/9. 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 8/155:05 pm
FSD
- BOI
1 stop6h 35m
United Airlines
Wed 8/195:44 pm
BOI
- FSD
1 stop5h 00m
United Airlines
Deal found 6/9![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 6/13. 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.
Thu 9/178:23 am
FSD
- GEG
1 stop6h 30m
Delta
Mon 9/217:46 pm
GEG
- FSD
2 stops12h 33m
Delta
Deal found 6/13![Delta logo]()
$324
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/2912:57 pm
FSD
- GEG
1 stop9h 45m
American Airlines
Sat 9/55:20 am
GEG
- FSD
2 stops10h 16m
American Airlines
Deal found 6/12![American Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 6/8. 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.
Thu 8/208:22 am
FSD
- BOI
1 stop6h 20m
Delta
Sun 8/235:30 am
BOI
- FSD
1 stop6h 08m
Delta
Deal found 6/8![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/49:30 am
FSD
- GEG
2 stops10h 56m
United Airlines
Wed 7/84:18 pm
GEG
- FSD
1 stop5h 35m
United Airlines
Deal found 6/8![United Airlines logo]()
$334
This American Airlines deal was found by Cheapflights users on 6/11. 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 9/1712:56 pm
FSD
- GEG
1 stop9h 29m
American Airlines
Mon 9/211:45 pm
GEG
- FSD
1 stop8h 03m
American Airlines
Deal found 6/11![American Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 8/296:15 am
FSD
- GEG
2 stops7h 57m
Delta
Sat 9/52:05 pm
GEG
- FSD
1 stop6h 46m
Delta
Deal found 6/10![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/111:20 am
RAP
- GEG
1 stop4h 52m
United Airlines
Wed 8/54:18 pm
GEG
- RAP
1 stop5h 07m
United Airlines
Deal found 6/12![United Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/2811:35 am
FSD
- BOI
1 stop7h 21m
United Airlines
Sat 8/15:46 pm
BOI
- FSD
1 stop5h 07m
United Airlines
Deal found 6/9![United Airlines logo]()
$365
This Delta deal was found by Cheapflights users on 6/8. 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 7/158:23 am
FSD
- BOI
1 stop6h 21m
Delta
Wed 7/225:30 am
BOI
- FSD
1 stop6h 19m
Delta
Deal found 6/8![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 6/12. 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 6/255:00 am
RAP
- BOI
1 stop4h 53m
United Airlines
Mon 6/295:46 pm
BOI
- RAP
1 stop4h 39m
United Airlines
Deal found 6/12![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/145:05 pm
FSD
- JAC
1 stop4h 35m
United Airlines
Tue 8/184:25 pm
JAC
- FSD
1 stop6h 19m
United Airlines
Deal found 6/8![United Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 6/12. 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.
Mon 7/276:48 am
RAP
- BOI
1 stop6h 56m
Delta
Mon 8/35:30 am
BOI
- RAP
1 stop8h 18m
Delta
Deal found 6/12![Delta logo]()
$427
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/156:00 am
FSD
- JAC
1 stop4h 43m
United Airlines
Tue 8/184:25 pm
JAC
- FSD
1 stop6h 19m
United Airlines
Deal found 6/10![United Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 6/10. 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 7/298:23 am
FSD
- BOI
1 stop6h 21m
Delta
Sun 8/25:30 am
BOI
- FSD
1 stop6h 19m
Delta
Deal found 6/10![Delta logo]()
$439
This United Airlines deal was found by Cheapflights users on 6/10. 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 10/318:35 am
RAP
- BOI
1 stop4h 55m
United Airlines
Wed 11/42:43 pm
BOI
- RAP
1 stop5h 50m
United Airlines
Deal found 6/10![United Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/257:00 am
RAP
- BOI
1 stop6h 38m
United Airlines
Sat 8/296:30 am
BOI
- RAP
1 stop5h 54m
United Airlines
Deal found 6/12![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 6/9. 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 6/268:23 am
FSD
- BOI
1 stop6h 28m
Delta
Tue 6/305:30 am
BOI
- FSD
1 stop6h 40m
Delta
Deal found 6/9![Delta logo]()
$509
This United Airlines deal was found by Cheapflights users on 6/11. 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 11/145:30 am
RAP
- IDA
1 stop3h 58m
United Airlines
Wed 11/185:57 pm
IDA
- RAP
1 stop4h 11m
United Airlines
Deal found 6/11![United Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 6/9. 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 11/149:14 am
FSD
- JAC
1 stop5h 15m
United Airlines
Wed 11/182:40 pm
JAC
- FSD
1 stop5h 06m
United Airlines
Deal found 6/9![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 6/9. 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.
Mon 8/104:30 pm
RAP
- GEG
2 stops8h 23m
Delta
Mon 8/1711:09 am
GEG
- RAP
2 stops10h 28m
Delta
Deal found 6/9![Delta logo]()
$613
This United Airlines deal was found by Cheapflights users on 6/11. 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 6/277:00 am
RAP
- GEG
1 stop6h 37m
United Airlines
Mon 6/295:00 am
GEG
- RAP
1 stop6h 29m
United Airlines
Deal found 6/11![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 6/10. 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 8/54:30 pm
RAP
- GEG
2 stops8h 29m
Delta
Mon 8/107:54 pm
GEG
- RAP
2 stops13h 08m
Delta
Deal found 6/10![Delta logo]()
$624
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/2211:20 am
RAP
- BOI
1 stop6h 36m
United Airlines
Mon 7/275:46 pm
BOI
- RAP
1 stop4h 39m
United Airlines
Deal found 6/9![United Airlines logo]()
$455
This Delta deal was found by Cheapflights users on 6/9. 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 6/266:48 am
RAP
- GEG
1 stop7h 30m
Delta
Sun 6/287:00 am
GEG
- RAP
1 stop6h 19m
Delta
Deal found 6/9![Delta logo]()
$629
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/265:05 pm
FSD
- BOI
1 stop5h 32m
United Airlines
Sat 8/295:00 am
BOI
- FSD
2 stops11h 58m
United Airlines
Deal found 6/12![United Airlines logo]()
$460
This United Airlines deal was found by Cheapflights users on 6/12. 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 11/149:14 am
FSD
- SUN
1 stop5h 30m
United Airlines
Wed 11/182:29 pm
SUN
- FSD
1 stop5h 17m
United Airlines
Deal found 6/12![United Airlines logo]()
$475
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 8/39:00 am
RAP
- GEG
1 stop4h 37m
United Airlines
Fri 8/74:18 pm
GEG
- RAP
1 stop5h 07m
United Airlines
Deal found 6/12![United Airlines logo]()
$537
This United Airlines deal was found by Cheapflights users on 6/12. 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 9/106:00 am
FSD
- BOI
1 stop4h 35m
United Airlines
Mon 9/147:05 pm
BOI
- FSD
2 stops16h 34m
United Airlines
Deal found 6/12![United Airlines logo]()
$538
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/109:00 am
RAP
- GEG
1 stop7h 11m
United Airlines
Thu 7/164:18 pm
GEG
- RAP
1 stop5h 07m
United Airlines
Deal found 6/12![United Airlines logo]()
$538
Last-minute flights from South Dakota to IdahoDiscover last-minute flight deals from South Dakota to Idaho. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from South Dakota to Idaho. Data last updated June 13, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/9. 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 6/139:00 am
RAP
- GEG
1 stop4h 37m
United Airlines
Mon 6/155:00 am
GEG
- RAP
1 stop6h 29m
United Airlines
Deal found 6/9![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 6/12. 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 6/255:00 am
RAP
- BOI
1 stop4h 53m
United Airlines
Mon 6/295:46 pm
BOI
- RAP
1 stop4h 39m
United Airlines
Deal found 6/12![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/9. 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 6/257:00 am
RAP
- GEG
1 stop6h 37m
United Airlines
Sun 6/285:00 am
GEG
- RAP
1 stop6h 29m
United Airlines
Deal found 6/9![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 6/11. 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 6/277:00 am
RAP
- GEG
1 stop6h 37m
United Airlines
Mon 6/295:00 am
GEG
- RAP
1 stop6h 29m
United Airlines
Deal found 6/11![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/49:30 am
FSD
- GEG
2 stops10h 56m
United Airlines
Wed 7/84:18 pm
GEG
- FSD
1 stop5h 35m
United Airlines
Deal found 6/8![United Airlines logo]()
$334
This American Airlines deal was found by Cheapflights users on 6/12. 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 7/75:34 pm
FSD
- BOI
1 stop6h 47m
American Airlines
Tue 7/141:57 pm
BOI
- FSD
1 stop9h 00m
American Airlines
Deal found 6/12![American Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 6/13. 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 7/95:53 pm
RAP
- BOI
1 stop4h 44m
United Airlines
Tue 7/216:30 am
BOI
- RAP
1 stop5h 59m
United Airlines
Deal found 6/13![United Airlines logo]()
$433
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 7/155:34 pm
FSD
- BOI
1 stop6h 47m
American Airlines
Wed 7/221:57 pm
BOI
- FSD
1 stop9h 00m
American Airlines
Deal found 6/10![American Airlines logo]()
$365
This Delta deal was found by Cheapflights users on 6/8. 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 7/158:23 am
FSD
- BOI
1 stop6h 21m
Delta
Wed 7/225:30 am
BOI
- FSD
1 stop6h 19m
Delta
Deal found 6/8![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 6/8. 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 7/158:23 am
FSD
- BOI
1 stop6h 21m
Delta
Sun 7/192:50 pm
BOI
- FSD
1 stop7h 16m
Delta
Deal found 6/8![Delta logo]()
$429
This Delta deal was found by Cheapflights users on 6/12. 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.
Mon 7/276:48 am
RAP
- BOI
1 stop6h 56m
Delta
Mon 8/35:30 am
BOI
- RAP
1 stop8h 18m
Delta
Deal found 6/12![Delta logo]()
$427
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/2811:35 am
FSD
- BOI
2 stops11h 30m
United Airlines
Sat 8/15:46 pm
BOI
- FSD
1 stop5h 07m
United Airlines
Deal found 6/9![United Airlines logo]()
$361
One-way flights from South Dakota to IdahoSearch for one-way flight options from South Dakota to Idaho. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
Search for one-way flight options from South Dakota to Idaho. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/239:39 pm
FSD
- GEG
1 stop15h 29m
Allegiant Air
Deal found 6/12![Allegiant Air logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Wed 8/53:39 pm
FSD
- GEG
3 stops45h 23m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$232
This Delta deal was found by Cheapflights users on 6/8. 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 8/261:26 pm
FSD
- JAC
1 stop7h 44m
Delta
Deal found 6/8![Delta logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Fri 7/2411:46 am
FSD
- GEG
2 stops54h 07m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Wed 7/293:36 pm
RAP
- GEG
2 stops25h 17m
Allegiant Air
Deal found 6/10![Allegiant Air logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Wed 8/52:47 pm
FSD
- GEG
2 stops27h 09m
Allegiant Air
Deal found 6/10![Allegiant Air logo]()
$259
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/2911:20 am
RAP
- GEG
1 stop4h 51m
United Airlines
Deal found 6/10![United Airlines logo]()
$269
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/267:47 am
FSD
- JAC
2 stops11h 02m
United Airlines
Deal found 6/8![United Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Wed 7/228:53 pm
FSD
- GEG
2 stops21h 00m
Allegiant Air
Deal found 6/12![Allegiant Air logo]()
$286
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/177:00 am
RAP
- GEG
1 stop6h 37m
United Airlines
Deal found 6/11![United Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 6/10. 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.
Mon 8/108:22 am
FSD
- GEG
1 stop6h 35m
Delta
Deal found 6/10![Delta logo]()
$304
This American Airlines deal was found by Cheapflights users on 6/13. 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 8/288:30 am
FSD
- BOI
1 stop5h 54m
American Airlines
Deal found 6/13![American Airlines logo]()
$304
Find flight deals from South Dakota to Idaho
Keep the following information in mind while searching for South Dakota to Idaho flight deals. Data was last updated June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $314 (Delta) |
One-way from | $228 (Kiwi.com) |
Popular in | November |
Cheapest in | June |
Average price | $278 |
Cheapflights Fare Finder
Customize your flight search to find flights from South Dakota to Idaho 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 June 13, 2026.
Use the filters below to find and compare flights from South Dakota to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Sioux FallsBoise
FSD - BOI
FSDBOI
Sioux Falls Joe Foss Field
Sat 8/15
5:05 pm-10:40 pm
1 stop6h 35m
Boise Air Term. Gowen Fld
Wed 8/19
5:44 pm-11:44 pm
1 stop5h 00m
$319
Sioux FallsSpokane
FSD - GEG
FSDGEG
Sioux Falls Joe Foss Field
Thu 9/17
8:23 am-12:53 pm
1 stop6h 30m
Spokane
Mon 9/21
7:46 pm-10:19 am
2 stops12h 33m
$324
Sioux FallsSpokane
FSD - GEG
FSDGEG
Sioux Falls Joe Foss Field
Sat 8/29
12:57 pm-8:42 pm
1 stop9h 45m
Spokane
Sat 9/5
5:20 am-5:36 pm
2 stops10h 16m
$324
Sioux FallsBoise
FSD - BOI
FSDBOI
Sioux Falls Joe Foss Field
Thu 8/20
8:22 am-1:42 pm
1 stop6h 20m
Boise Air Term. Gowen Fld
Sun 8/23
5:30 am-12:38 pm
1 stop6h 08m
$329
Sioux FallsSpokane
FSD - GEG
FSDGEG
Sioux Falls Joe Foss Field
Sat 7/4
9:30 am-6:26 pm
2 stops10h 56m
Spokane
Wed 7/8
4:18 pm-11:53 pm
1 stop5h 35m
$334
Sioux FallsSpokane
FSD - GEG
FSDGEG
Sioux Falls Joe Foss Field
Sat 8/29
6:15 am-12:12 pm
2 stops7h 57m
Spokane
Sat 9/5
2:05 pm-10:51 pm
1 stop6h 46m
$334
Sioux FallsSpokane
FSD - GEG
FSDGEG
Sioux Falls Joe Foss Field
Thu 9/17
12:56 pm-8:25 pm
1 stop9h 29m
Spokane
Mon 9/21
1:45 pm-11:48 pm
1 stop8h 03m
$339
Rapid CitySpokane
RAP - GEG
RAPGEG
Rapid City
Sat 8/1
11:20 am-3:12 pm
1 stop4h 52m
Spokane
Wed 8/5
4:18 pm-10:25 pm
1 stop5h 07m
$348
Sioux FallsBoise
FSD - BOI
FSDBOI
Sioux Falls Joe Foss Field
Tue 7/28
11:35 am-5:56 pm
1 stop7h 21m
Boise Air Term. Gowen Fld
Sat 8/1
5:46 pm-11:53 pm
1 stop5h 07m
$365
Rapid CityBoise
RAP - BOI
RAPBOI
Rapid City
Thu 6/25
5:00 am-9:53 am
1 stop4h 53m
Boise Air Term. Gowen Fld
Mon 6/29
5:46 pm-10:25 pm
1 stop4h 39m
$369
Showing 1-10 of 52 resultsSorted by cheapest first
Best time to book a flight from South Dakota to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from South Dakota with our price prediction graph.
FSD-GEG
FSD-BOI
RAP-BOI
RAP-GEG
FSD-JAC
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 South Dakota to Idaho
USSD-USID
FSD-GEG
FSD-BOI
RAP-BOI
RAP-GEG
What is the cheapest month to book a flight from South Dakota to Idaho?
Currently, June is the cheapest month in which you can book a flight from South Dakota to Idaho (average of $226). Flying from South Dakota to Idaho in December is currently the most expensive (average of $489). 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.
How much does it cost to fly round-trip from South Dakota to Idaho?
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated June 13, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from South Dakota to Idaho have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from South Dakota to Idaho. 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
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Alternative routes for South Dakota to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from South Dakota to Idaho by cabin class
Find flights from South Dakota to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
South Dakota and Idaho flights
Browse other South Dakota and Idaho flight options. Last updated on June 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Idaho
Find the right flight back to South Dakota after your stay in Idaho
South Dakota to Idaho flights
Consider these flights traveling from South Dakota to Idaho.
Top 3 airlines flying from South Dakota to Idaho
Discover the top 3 airlines that operate flights from South Dakota to Idaho. 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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$226 | Average$330 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$406 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$334 | Average$413 | FlexibilityNo cancel fee | On-time71% |