$126+ Cheap flights from Missouri 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — BOI
Jul 16 — Jul 231
Round-trip
1 adult, Economy
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Cheapest flights from Missouri to IdahoExplore the most affordable flight options available from Missouri to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 16, 2026.
Explore the most affordable flight options available from Missouri to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 16, 2026.
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am
MCI
- BOI
1 stop6h 36m
Alaska Airlines
Tue 9/12:17 pm
BOI
- MCI
1 stop8h 42m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$251
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:34 pm
MCI
- BOI
1 stop7h 59m
Alaska Airlines
Wed 8/262:17 pm
BOI
- MCI
1 stop8h 42m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$253
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.
Tue 8/256:20 am
MCI
- BOI
2 stops8h 04m
American Airlines
Tue 9/13:16 pm
BOI
- MCI
1 stop8h 19m
American Airlines
Deal found 6/11![American Airlines logo]()
$256
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 9/246:55 pm
STL
- BOI
1 stop6h 03m
Delta
Tue 9/296:40 pm
BOI
- STL
1 stop4h 54m
Delta
Deal found 6/11![Delta logo]()
$291
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:00 am
MCI
- GEG
1 stop7h 31m
Alaska Airlines
Tue 9/11:27 pm
GEG
- MCI
1 stop8h 32m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$299
This CheapOair deal was found by Cheapflights users on 6/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:46 pm
STL
- BOI
1 stop27h 11m
Frontier
Thu 9/1712:59 pm
BOI
- STL
1 stop5h 16m
Frontier
Deal found 6/14![Frontier logo]()
$308
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.
Wed 8/56:01 pm
MCI
- GEG
1 stop7h 25m
Delta
Tue 8/115:00 pm
GEG
- MCI
1 stop5h 13m
Delta
Deal found 6/11![Delta logo]()
$310
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.
Wed 10/143:30 pm
SGF
- GEG
1 stop8h 07m
Delta
Tue 10/2012:40 pm
GEG
- SGF
1 stop7h 52m
Delta
Deal found 6/12![Delta logo]()
$311
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.
Wed 10/143:30 pm
SGF
- GEG
1 stop8h 07m
Delta
Wed 10/217:00 am
GEG
- SGF
2 stops9h 10m
Delta
Deal found 6/12![Delta logo]()
$316
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.
Fri 8/146:01 pm
MCI
- IDA
1 stop5h 31m
Delta
Thu 8/207:00 pm
IDA
- MCI
1 stop4h 13m
Delta
Deal found 6/13![Delta logo]()
$319
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:08 pm
STL
- BOI
1 stop17h 22m
Frontier
Thu 7/161:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Deal found 6/11![Frontier logo]()
$319
This Delta deal was found by Cheapflights users on 6/15. 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 10/273:30 pm
SGF
- GEG
1 stop8h 07m
Delta
Fri 11/612:40 pm
GEG
- SGF
1 stop7h 52m
Delta
Deal found 6/15![Delta logo]()
$320
Best flights from Missouri to IdahoDiscover carefully curated flight deals from Missouri to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 16, 2026.
Discover carefully curated flight deals from Missouri to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 16, 2026.
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.
Thu 9/246:55 pm
STL
- BOI
1 stop6h 03m
Delta
Tue 9/2911:10 am
BOI
- STL
1 stop5h 27m
Delta
Deal found 6/12![Delta logo]()
$291
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am
MCI
- BOI
1 stop8h 22m
Alaska Airlines
Wed 8/262:17 pm
BOI
- MCI
1 stop8h 42m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$347
This CheapOair deal was found by Cheapflights users on 6/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Sun 8/21:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Deal found 6/15![Frontier logo]()
$356
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.
Thu 12/39:13 am
STL
- JAC
1 stop6h 59m
United Airlines
Tue 12/810:51 am
JAC
- STL
1 stop4h 35m
United Airlines
Deal found 6/10![United Airlines logo]()
$359
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:00 am
MCI
- BOI
1 stop6h 05m
Southwest
Thu 7/304:25 pm
BOI
- MCI
2 stops7h 10m
Southwest
Deal found 6/11![Southwest logo]()
$398
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.
Fri 7/175:30 am
STL
- BOI
1 stop6h 49m
American Airlines
Tue 7/211:57 pm
BOI
- STL
2 stops9h 01m
American Airlines
Deal found 6/12![American Airlines logo]()
$420
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.
Wed 8/56:01 pm
MCI
- GEG
1 stop7h 25m
Delta
Tue 8/115:00 pm
GEG
- MCI
1 stop5h 13m
Delta
Deal found 6/11![Delta logo]()
$310
This Delta deal was found by Cheapflights users on 6/14. 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 7/217:05 am
MCI
- JAC
1 stop4h 41m
Delta
Thu 7/306:05 pm
JAC
- MCI
1 stop5h 08m
Delta
Deal found 6/14![Delta logo]()
$329
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:35 am
STL
- BOI
1 stop8h 47m
Alaska Airlines
Wed 8/266:23 am
BOI
- STL
1 stop6h 43m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/151:40 pm
MCI
- JAC
1 stop5h 13m
United Airlines
Wed 7/228:00 am
JAC
- MCI
1 stop6h 45m
United Airlines
Deal found 6/15![United Airlines logo]()
$380
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/201:45 pm
MCI
- BOI
1 stop23h 45m
Frontier
Thu 7/21:25 pm
BOI
- MCI
1 stop22h 35m
Frontier
Deal found 6/10![Frontier logo]()
$392
This Delta deal was found by Cheapflights users on 6/14. 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 10/33:02 pm
MCI
- JAC
1 stop5h 19m
Delta
Wed 10/75:30 pm
JAC
- MCI
1 stop5h 51m
Delta
Deal found 6/14![Delta logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:08 pm
STL
- GEG
1 stop7h 03m
Alaska Airlines
Tue 8/255:12 am
GEG
- STL
1 stop9h 58m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$388
This Southwest deal was found by Cheapflights users on 6/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/154:10 pm
MCI
- BOI
2 stops8h 15m
Southwest
Wed 7/2211:30 am
BOI
- MCI
2 stops8h 10m
Southwest
Deal found 6/15![Southwest logo]()
$433
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 8/207:45 pm
STL
- GEG
1 stop6h 08m
Delta
Tue 8/255:00 pm
GEG
- STL
1 stop5h 41m
Delta
Deal found 6/11![Delta logo]()
$331
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.
Tue 8/116:00 am
MCI
- JAC
2 stops8h 55m
United Airlines
Wed 8/197:00 am
JAC
- MCI
1 stop4h 37m
United Airlines
Deal found 6/13![United Airlines logo]()
$414
This American Airlines deal was found by Cheapflights users on 6/15. 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 8/16:34 pm
SGF
- BOI
1 stop5h 47m
American Airlines
Sat 8/82:58 pm
BOI
- SGF
1 stop6h 45m
American Airlines
Deal found 6/15![American Airlines logo]()
$461
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:50 pm
MCI
- BOI
1 stop6h 58m
Alaska Airlines
Sat 7/410:00 am
BOI
- MCI
1 stop8h 01m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$392
This Southwest deal was found by Cheapflights users on 6/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:45 pm
STL
- BOI
2 stops8h 25m
Southwest
Wed 9/912:35 pm
BOI
- STL
2 stops8h 05m
Southwest
Deal found 6/14![Southwest logo]()
$434
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.
Wed 7/297:55 pm
STL
- GEG
1 stop6h 00m
Delta
Wed 8/126:45 am
GEG
- STL
1 stop7h 59m
Delta
Deal found 6/11![Delta logo]()
$341
This United Airlines deal was found by Cheapflights users on 6/14. 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 8/255:30 am
SGF
- BOI
1 stop5h 05m
United Airlines
Sat 8/295:00 am
BOI
- SGF
1 stop6h 56m
United Airlines
Deal found 6/14![United Airlines logo]()
$419
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/214:10 pm
MCI
- GEG
2 stops8h 35m
Southwest
Tue 7/285:35 am
GEG
- MCI
1 stop6h 40m
Southwest
Deal found 6/12![Southwest logo]()
$435
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:08 pm
STL
- GEG
1 stop7h 03m
Alaska Airlines
Wed 8/265:52 am
GEG
- STL
1 stop6h 14m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 6/15. 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 7/156:00 pm
MCI
- BOI
1 stop7h 05m
Delta
Wed 7/226:42 pm
BOI
- MCI
1 stop4h 31m
Delta
Deal found 6/15![Delta logo]()
$347
This Southwest deal was found by Cheapflights users on 6/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:05 pm
MCI
- GEG
2 stops8h 55m
Southwest
Thu 9/310:55 am
GEG
- MCI
2 stops8h 55m
Southwest
Deal found 6/14![Southwest logo]()
$437
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/165:10 am
STL
- JAC
1 stop5h 24m
United Airlines
Thu 7/234:23 pm
JAC
- STL
1 stop6h 34m
United Airlines
Deal found 6/15![United Airlines logo]()
$438
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:37 pm
STL
- BOI
1 stop7h 11m
Alaska Airlines
Wed 7/84:27 pm
BOI
- STL
1 stop6h 32m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$428
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 6/261:32 pm
MCI
- BOI
2 stops9h 33m
United Airlines
Tue 6/305:46 pm
BOI
- MCI
1 stop4h 39m
United Airlines
Deal found 6/11![United Airlines logo]()
$442
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:15 pm
STL
- BOI
2 stops8h 40m
Southwest
Wed 10/1412:50 pm
BOI
- STL
2 stops10h 40m
Southwest
Deal found 6/12![Southwest logo]()
$450
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.
Fri 7/32:55 pm
MCI
- JAC
1 stop5h 47m
Delta
Wed 7/86:05 pm
JAC
- MCI
1 stop5h 08m
Delta
Deal found 6/11![Delta logo]()
$374
Last-minute flights from Missouri to IdahoDiscover last-minute flight deals from Missouri to Idaho. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Idaho. Data last updated June 16, 2026 and is based on user searches.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:08 pm
STL
- BOI
1 stop17h 22m
Frontier
Thu 7/161:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Deal found 6/11![Frontier 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.
Wed 7/16:00 pm
MCI
- BOI
1 stop7h 09m
Delta
Tue 7/76:42 pm
BOI
- MCI
1 stop4h 31m
Delta
Deal found 6/11![Delta logo]()
$347
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 7/32:56 pm
MCI
- JAC
1 stop6h 40m
United Airlines
Wed 7/84:23 pm
JAC
- MCI
1 stop6h 07m
United Airlines
Deal found 6/11![United Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 6/14. 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 7/48:00 am
STL
- JAC
1 stop5h 16m
Delta
Fri 7/106:05 pm
JAC
- STL
1 stop5h 36m
Delta
Deal found 6/14![Delta logo]()
$359
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/131:45 pm
MCI
- BOI
1 stop23h 44m
Frontier
Thu 7/161:24 pm
BOI
- MCI
1 stop22h 36m
Frontier
Deal found 6/12![Frontier logo]()
$330
This Delta deal was found by Cheapflights users on 6/15. 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 7/157:05 am
MCI
- IDA
1 stop4h 38m
Delta
Wed 7/226:00 am
IDA
- MCI
1 stop6h 57m
Delta
Deal found 6/15![Delta logo]()
$344
This Delta deal was found by Cheapflights users on 6/15. 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 7/157:00 am
MCI
- GEG
1 stop5h 48m
Delta
Wed 7/225:20 am
GEG
- MCI
1 stop6h 37m
Delta
Deal found 6/15![Delta logo]()
$363
This Delta deal was found by Cheapflights users on 6/14. 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 7/157:55 pm
STL
- GEG
1 stop6h 00m
Delta
Tue 7/215:10 pm
GEG
- STL
1 stop5h 31m
Delta
Deal found 6/14![Delta logo]()
$363
This Delta deal was found by Cheapflights users on 6/14. 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 7/217:05 am
MCI
- JAC
1 stop6h 10m
Delta
Tue 7/286:05 pm
JAC
- MCI
1 stop5h 08m
Delta
Deal found 6/14![Delta logo]()
$329
This CheapOair deal was found by Cheapflights users on 6/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Sun 8/21:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Deal found 6/15![Frontier logo]()
$356
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:50 pm
MCI
- BOI
1 stop6h 58m
Multiple Airlines
Thu 7/301:24 pm
BOI
- MCI
1 stop22h 36m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$357
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.
Wed 7/297:55 pm
STL
- GEG
1 stop6h 00m
Delta
Wed 8/126:45 am
GEG
- STL
1 stop7h 59m
Delta
Deal found 6/11![Delta logo]()
$341
One-way flights from Missouri to IdahoSearch for one-way flight options from Missouri to Idaho. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
Search for one-way flight options from Missouri to Idaho. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:45 pm
MCI
- BOI
1 stop23h 44m
Frontier
Deal found 6/11![Frontier logo]()
$126
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Deal found 6/11![Frontier logo]()
$145
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/271:45 pm
MCI
- BOI
1 stop23h 44m
Frontier
Deal found 6/11![Frontier logo]()
$146
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/258:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Deal found 6/12![Frontier logo]()
$160
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Deal found 6/11![Frontier logo]()
$165
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:08 pm
STL
- BOI
1 stop17h 22m
Frontier
Deal found 6/11![Frontier logo]()
$166
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/291:45 pm
MCI
- BOI
1 stop23h 45m
Frontier
Deal found 6/12![Frontier logo]()
$167
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:58 pm
STL
- GEG
2 stops43h 01m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$169
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.
Fri 7/36:00 pm
MCI
- BOI
1 stop7h 09m
Delta
Deal found 6/12![Delta logo]()
$174
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.
Tue 8/258:00 am
STL
- GEG
1 stop8h 09m
American Airlines
Deal found 6/13![American Airlines logo]()
$182
This Delta deal was found by Cheapflights users on 6/15. 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 7/77:55 pm
STL
- BOI
1 stop5h 10m
Delta
Deal found 6/15![Delta logo]()
$182
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:29 am
STL
- JAC
1 stop29h 53m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$185
Find flight deals from Missouri to Idaho
Keep the following information in mind while searching for Missouri to Idaho flight deals. Data was last updated June 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $251 (Alaska Airlines) |
One-way from | $126 (Booking.com) |
Popular in | February |
Cheapest in | January |
Average price | $532 |
Cheapflights Fare Finder
Customize your flight search to find flights from Missouri 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 16, 2026.
Use the filters below to find and compare flights from Missouri to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Thu 9/24
6:55 pm-11:58 pm
1 stop6h 03m
Boise Air Term. Gowen Fld
Tue 9/29
11:10 am-5:37 pm
1 stop5h 27m
$291
Kansas CitySpokane
MCI - GEG
MCIGEG
Kansas City
Wed 8/5
6:01 pm-11:26 pm
1 stop7h 25m
Spokane
Tue 8/11
5:00 pm-12:13 am
1 stop5h 13m
$310
Quickest round-trip
Kansas CityJackson
MCI - JAC
MCIJAC
Kansas City
Tue 7/21
7:05 am-10:46 am
1 stop4h 41m
Jackson Hole
Thu 7/30
6:05 pm-12:13 am
1 stop5h 08m
$329
Kansas CityJackson
MCI - JAC
MCIJAC
Kansas City
Sat 10/3
3:02 pm-7:21 pm
1 stop5h 19m
Jackson Hole
Wed 10/7
5:30 pm-12:21 am
1 stop5h 51m
$329
St. LouisSpokane
STL - GEG
STLGEG
Lambert-St Louis
Thu 8/20
7:45 pm-11:53 pm
1 stop6h 08m
Spokane
Tue 8/25
5:00 pm-12:41 am
1 stop5h 41m
$331
St. LouisSpokane
STL - GEG
STLGEG
Lambert-St Louis
Wed 7/29
7:55 pm-11:55 pm
1 stop6h 00m
Spokane
Wed 8/12
6:45 am-4:44 pm
1 stop7h 59m
$341
Kansas CityBoise
MCI - BOI
MCIBOI
Kansas City
Tue 8/25
7:00 am-2:22 pm
1 stop8h 22m
Boise Air Term. Gowen Fld
Wed 8/26
2:17 pm-11:59 pm
1 stop8h 42m
$347
Kansas CityBoise
MCI - BOI
MCIBOI
Kansas City
Wed 7/15
6:00 pm-12:05 am
1 stop7h 05m
Boise Air Term. Gowen Fld
Wed 7/22
6:42 pm-12:13 am
1 stop4h 31m
$347
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Mon 7/27
8:08 pm-12:29 pm
1 stop17h 21m
Boise Air Term. Gowen Fld
Sun 8/2
1:24 pm-7:23 pm
1 stop4h 59m
$356
St. LouisJackson
STL - JAC
STLJAC
Lambert-St Louis
Thu 12/3
9:13 am-3:12 pm
1 stop6h 59m
Jackson Hole
Tue 12/8
10:51 am-4:26 pm
1 stop4h 35m
$359
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Missouri to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Missouri with our price prediction graph.
MCI-BOI
STL-BOI
MCI-GEG
SGF-GEG
MCI-IDA
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 Missouri to Idaho
USMO-USID
MCI-BOI
STL-BOI
MCI-GEG
SGF-GEG
What is the cheapest month to book a flight from Missouri to Idaho?
Currently, June is the cheapest month in which you can book a flight from Missouri to Idaho (average of $133). Flying from Missouri to Idaho in July is currently the most expensive (average of $313). 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 Missouri to Idaho?
How far ahead should I book a flight from Missouri to Idaho?
Booking 22 days in advance of your planned departure date is, on average, the best time to get cheap flights from Missouri to Idaho. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 16, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, andDelta from Missouri to Idaho by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Missouri 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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Missouri 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 Missouri to Idaho by cabin class
Find flights from Missouri to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Missouri and Idaho flights
Browse other Missouri and Idaho flight options. Last updated on June 16, 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 Missouri after your stay in Idaho
Missouri to Idaho flights
Consider these flights traveling from Missouri to Idaho.
Top 5 airlines flying from Missouri to Idaho
Discover the top 5 airlines that operate flights from Missouri 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 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$133 | Average$379 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$186 | Average$445 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$232 | Average$405 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$256 | Average$484 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$266 | Average$485 | FlexibilityNo cancel fee | On-time63% |