$139+ Cheap flights from Idaho to Missouri
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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — STL
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Missouri 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
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Cheapest flights from Idaho to MissouriExplore the most affordable flight options available from Idaho to Missouri. 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 Missouri. 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 8/3. 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.
Mon 8/242:44 pm -
1 stop4h 50m
Sun 8/305:13 pm -
1 stop5h 24m
Deal found 8/3![United Airlines logo]()
$277
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:24 pm -
1 stop5h 49m
Wed 9/912:17 pm -
1 stop26h 38m
Deal found 8/4![Frontier logo]()
$281
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.
Mon 8/242:44 pm -
1 stop4h 50m
Sat 8/291:43 pm -
2 stops8h 41m
Deal found 8/1![United Airlines logo]()
$282
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:55 pm -
2 stops7h 50m
Sat 8/297:30 am -
2 stops8h 00m
Deal found 8/1![Southwest logo]()
$287
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:50 pm -
1 stop19h 42m
Wed 10/712:17 pm -
1 stop27h 40m
Deal found 8/1![Frontier logo]()
$291
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/132:50 pm -
1 stop5h 55m
Tue 9/157:00 am -
2 stops14h 20m
Deal found 7/31![Multiple Airlines logo]()
$301
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm -
1 stop19h 27m
Sun 9/1312:27 pm -
1 stop26h 28m
Deal found 7/31![Frontier logo]()
$311
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.
Mon 8/241:55 pm -
2 stops9h 40m
Sun 8/305:30 am -
1 stop6h 46m
Deal found 8/3![American Airlines logo]()
$311
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:52 pm -
1 stop8h 25m
Sun 10/255:19 pm -
1 stop22h 38m
Deal found 8/2![Frontier logo]()
$315
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.
Mon 9/212:50 pm -
2 stops27h 47m
Sun 9/2710:30 pm -
1 stop16h 25m
Deal found 8/1![Frontier logo]()
$315
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.
Sun 8/305:00 am -
1 stop6h 37m
Sun 9/65:13 pm -
1 stop6h 27m
Deal found 8/2![United Airlines logo]()
$316
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:00 am -
1 stop5h 45m
Sat 9/52:05 pm -
1 stop6h 20m
Deal found 8/1![Southwest logo]()
$318
Best flights from Idaho to MissouriDiscover carefully curated flight deals from Idaho to Missouri 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 Missouri 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 8/1. 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.
Mon 8/242:44 pm -
1 stop4h 50m
Sat 8/291:43 pm -
2 stops8h 41m
Deal found 8/1![United Airlines logo]()
$282
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm -
1 stop19h 27m
Sun 9/1312:27 pm -
1 stop26h 28m
Deal found 8/3![Frontier logo]()
$311
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.
Fri 10/26:57 pm -
1 stop4h 47m
Wed 10/77:45 am -
1 stop5h 37m
Deal found 8/2![Delta logo]()
$329
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am -
1 stop5h 38m
Mon 8/317:00 am -
1 stop6h 36m
Deal found 8/3![Alaska Airlines logo]()
$331
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 9/58:01 am -
2 stops10h 17m
Wed 9/97:09 am -
1 stop8h 22m
Deal found 8/4![American Airlines logo]()
$344
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:00 am -
2 stops9h 00m
Fri 9/115:55 am -
1 stop7h 45m
Deal found 8/3![Southwest logo]()
$374
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:02 am -
1 stop9h 39m
Fri 11/1310:04 pm -
2 stops35h 08m
Deal found 8/4![Multiple Airlines logo]()
$469
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.
Sat 8/293:54 pm -
1 stop5h 36m
Sat 9/51:08 pm -
2 stops9h 38m
Deal found 8/1![United Airlines logo]()
$328
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:00 am -
1 stop6h 38m
Tue 9/111:00 am -
2 stops12h 32m
Deal found 8/4![Delta logo]()
$334
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:24 pm -
1 stop5h 49m
Wed 9/98:10 pm -
2 stops18h 45m
Deal found 8/4![Frontier logo]()
$354
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:57 pm -
1 stop19h 41m
Wed 9/167:00 am -
1 stop9h 20m
Deal found 8/1![Alaska 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 10/212:28 pm -
1 stop5h 16m
Sat 10/241:48 pm -
1 stop4h 28m
Deal found 7/31![United Airlines logo]()
$329
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:17 pm -
1 stop4h 51m
Wed 9/93:59 pm -
2 stops7h 23m
Deal found 8/4![Delta logo]()
$334
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:40 pm -
1 stop5h 55m
Mon 9/287:00 pm -
1 stop5h 40m
Deal found 8/1![Southwest logo]()
$385
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:57 pm -
1 stop24h 21m
Mon 10/53:17 pm -
1 stop8h 42m
Deal found 8/3![Alaska Airlines logo]()
$354
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.
Sun 9/65:40 am -
1 stop8h 49m
Tue 9/86:20 am -
1 stop7h 34m
Deal found 7/31![American Airlines logo]()
$391
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.
Thu 8/275:44 pm -
1 stop4h 58m
Thu 9/105:30 am -
1 stop5h 05m
Deal found 8/4![United Airlines logo]()
$339
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.
Fri 8/281:59 pm -
1 stop7h 22m
Fri 9/43:20 pm -
1 stop7h 37m
Deal found 7/31![Delta logo]()
$339
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:55 am -
1 stop6h 35m
Wed 9/162:20 pm -
2 stops9h 50m
Deal found 8/4![Southwest logo]()
$391
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 10/16:23 am -
1 stop6h 48m
Mon 10/57:02 am -
1 stop9h 21m
Deal found 7/30![Alaska Airlines logo]()
$369
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 9/31:55 pm -
2 stops8h 47m
Sun 9/69:32 am -
1 stop5h 57m
Deal found 8/4![American Airlines logo]()
$407
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.
Sat 8/222:44 pm -
1 stop5h 03m
Thu 8/2711:20 am -
2 stops11h 04m
Deal found 7/31![United Airlines logo]()
$344
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.
Thu 8/201:00 pm -
1 stop8h 02m
Thu 8/277:15 am -
1 stop6h 53m
Deal found 8/2![Delta logo]()
$357
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:00 am -
2 stops8h 35m
Sat 10/312:40 pm -
2 stops8h 50m
Deal found 8/1![Southwest logo]()
$413
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 8/202:49 pm -
1 stop6h 13m
Mon 8/241:13 pm -
2 stops10h 27m
Deal found 8/4![American Airlines logo]()
$414
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:59 am -
1 stop10h 19m
Mon 10/196:17 am -
1 stop7h 18m
Deal found 8/2![Alaska Airlines logo]()
$385
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.
Wed 9/24:04 pm -
1 stop6h 26m
Wed 9/96:00 am -
1 stop4h 51m
Deal found 8/4![United Airlines logo]()
$354
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.
Tue 9/225:10 am -
2 stops10h 27m
Tue 9/292:25 pm -
2 stops8h 50m
Deal found 8/2![Delta logo]()
$384
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.
Wed 9/1612:39 pm -
1 stop9h 04m
Tue 9/222:30 pm -
1 stop7h 09m
Deal found 8/4![American Airlines logo]()
$423
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/61:55 pm -
1 stop7h 15m
Mon 10/126:20 pm -
1 stop8h 10m
Deal found 8/2![Southwest logo]()
$423
Last-minute flights from Idaho to MissouriDiscover last-minute flight deals from Idaho to Missouri. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Missouri. Data last updated August 5, 2026 and is based on user searches.
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.
Mon 8/242:44 pm -
1 stop4h 50m
Sun 8/305:13 pm -
1 stop5h 24m
Deal found 8/3![United Airlines logo]()
$277
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.
Mon 8/242:44 pm -
1 stop4h 50m
Sat 8/291:43 pm -
2 stops8h 41m
Deal found 8/1![United Airlines logo]()
$282
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:55 pm -
2 stops7h 50m
Sat 8/297:30 am -
2 stops8h 00m
Deal found 8/1![Southwest logo]()
$287
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.
Mon 8/241:55 pm -
2 stops9h 40m
Sun 8/305:30 am -
1 stop6h 46m
Deal found 8/3![American Airlines logo]()
$311
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:00 am -
1 stop5h 45m
Sat 9/52:05 pm -
1 stop6h 20m
Deal found 8/1![Southwest logo]()
$318
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.
Sun 8/305:00 am -
1 stop6h 37m
Sun 9/65:13 pm -
1 stop6h 27m
Deal found 8/2![United Airlines logo]()
$316
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:05 am -
1 stop6h 10m
Sun 9/66:40 pm -
1 stop6h 20m
Deal found 8/2![Southwest logo]()
$323
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:24 pm -
1 stop5h 49m
Wed 9/912:17 pm -
1 stop26h 38m
Deal found 8/4![Frontier logo]()
$281
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.
Sat 9/53:54 pm -
1 stop5h 48m
Thu 9/105:06 pm -
1 stop6h 08m
Deal found 7/31![United Airlines logo]()
$321
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm -
1 stop19h 27m
Sun 9/1312:27 pm -
1 stop26h 28m
Deal found 7/31![Frontier logo]()
$311
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/132:50 pm -
1 stop5h 55m
Tue 9/157:00 am -
2 stops14h 20m
Deal found 7/31![Multiple Airlines logo]()
$301
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.
Mon 9/212:50 pm -
2 stops27h 47m
Sun 9/2710:30 pm -
1 stop16h 25m
Deal found 8/1![Frontier logo]()
$315
One-way flights from Idaho to MissouriSearch for one-way flight options from Idaho to Missouri. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from Idaho to Missouri. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
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.
Sun 8/305:44 pm -
1 stop4h 46m
Deal found 7/31![United Airlines logo]()
$139
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.
Tue 8/251:55 pm -
2 stops9h 40m
Deal found 8/4![American Airlines logo]()
$144
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:00 am -
1 stop6h 32m
Deal found 8/4![Delta logo]()
$165
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:01 pm -
1 stop8h 58m
Deal found 8/4![Alaska Airlines logo]()
$165
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:19 am -
2 stops14h 40m
Deal found 8/3![Alaska Airlines logo]()
$167
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.
Tue 9/81:24 pm -
1 stop28h 53m
Deal found 8/2![Frontier logo]()
$169
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/161:24 pm -
1 stop22h 36m
Deal found 8/4![Frontier logo]()
$181
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:24 pm -
2 stops50h 58m
Deal found 8/4![Frontier logo]()
$189
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 8/222:25 pm -
1 stop5h 21m
Deal found 8/4![United Airlines logo]()
$190
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:58 pm -
2 stops42h 24m
Deal found 8/4![Multiple Airlines logo]()
$192
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.
Mon 9/73:19 pm -
1 stop8h 16m
Deal found 7/31![American Airlines logo]()
$193
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:50 pm -
2 stops27h 47m
Deal found 8/4![Frontier logo]()
$195
Find flight deals from Idaho to Missouri
Keep the following information in mind while searching for Idaho to Missouri flight deals. Data was last updated August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $277 (United Airlines) |
One-way from | $139 (Southwest) |
Popular in | July |
Cheapest in | September |
Average price | $492 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Missouri 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 Missouri that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseKansas City
BOI - MCI
BOIMCI
Boise Air Term. Gowen Fld
Mon 8/24
2:44 pm-8:34 pm
1 stop4h 50m
Kansas City
Sat 8/29
1:43 pm-9:24 pm
2 stops8h 41m
$282
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Thu 9/10
2:50 pm-11:17 am
1 stop19h 27m
Lambert-St Louis
Sun 9/13
12:27 pm-1:55 pm
1 stop26h 28m
$311
SpokaneKansas City
GEG - MCI
GEGMCI
Spokane
Sat 8/29
3:54 pm-11:30 pm
1 stop5h 36m
Kansas City
Sat 9/5
1:08 pm-8:46 pm
2 stops9h 38m
$328
Idaho FallsSt. Louis
IDA - STL
IDASTL
Idaho Falls Fanning Field
Fri 10/2
6:57 pm-12:44 am
1 stop4h 47m
Lambert-St Louis
Wed 10/7
7:45 am-12:22 pm
1 stop5h 37m
$329
Quickest round-trip
Idaho FallsKansas City
IDA - MCI
IDAMCI
Idaho Falls Fanning Field
Wed 10/21
2:28 pm-8:44 pm
1 stop5h 16m
Kansas City
Sat 10/24
1:48 pm-5:16 pm
1 stop4h 28m
$329
BoiseKansas City
BOI - MCI
BOIMCI
Boise Air Term. Gowen Fld
Thu 8/27
6:00 am-12:38 pm
1 stop5h 38m
Kansas City
Mon 8/31
7:00 am-12:36 pm
1 stop6h 36m
$331
Idaho FallsSt. Louis
IDA - STL
IDASTL
Idaho Falls Fanning Field
Tue 8/25
6:00 am-1:38 pm
1 stop6h 38m
Lambert-St Louis
Tue 9/1
11:00 am-10:32 pm
2 stops12h 32m
$334
Idaho FallsKansas City
IDA - MCI
IDAMCI
Idaho Falls Fanning Field
Wed 9/2
3:17 pm-9:08 pm
1 stop4h 51m
Kansas City
Wed 9/9
3:59 pm-10:22 pm
2 stops7h 23m
$334
BoiseSpringfield
BOI - SGF
BOISGF
Boise Air Term. Gowen Fld
Thu 8/27
5:44 pm-11:42 pm
1 stop4h 58m
Springfield-Branson
Thu 9/10
5:30 am-9:35 am
1 stop5h 05m
$339
BoiseSpringfield
BOI - SGF
BOISGF
Boise Air Term. Gowen Fld
Fri 8/28
1:59 pm-10:21 pm
1 stop7h 22m
Springfield-Branson
Fri 9/4
3:20 pm-9:57 pm
1 stop7h 37m
$339
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Idaho to Missouri
Have a flexible travel schedule? Discover the best time to fly to Missouri from Idaho with our price prediction graph.
BOI-MCI
BOI-STL
IDA-STL
BOI-SGF
GEG-STL
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 Missouri
USID-USMO
BOI-MCI
BOI-STL
IDA-STL
BOI-SGF
What is the cheapest month to book a flight from Idaho to Missouri?
Currently, February is the cheapest month in which you can book a flight from Idaho to Missouri (average of $360). Flying from Idaho to Missouri in July is currently the most expensive (average of $579). 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 Idaho to Missouri?
Airfare is below average for this route at the moment.
Idaho to Missouri flights typically cost between $414 and $676 in September.The cheapest round-trip price found within the last 5 days was $281 on Frontier (Sep 3-Sep 9).
How far ahead should I book a flight from Idaho to Missouri?
The best time to book flights from Idaho to Missouri is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Missouri
Get insights into the airlines that provide service to Missouri. 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 Missouri. Reviews last updated August 5, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta from Idaho to Missouri have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Idaho to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Idaho to Missouri
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Missouri by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Missouri by cabin class
Find flights from Idaho to Missouri, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Missouri flights
Browse other Idaho and Missouri 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 Missouri
Find the right flight back to Idaho after your stay in Missouri
Idaho to Missouri flights
Consider these flights traveling from Idaho to Missouri.
Top 5 airlines flying from Idaho to Missouri
Discover the top 5 airlines that operate flights from Idaho to Missouri. 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$185 | Average$434 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$237 | Average$461 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$262 | Average$451 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$283 | Average$465 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$338 | Average$499 | FlexibilityNo cancel fee | On-time71% |