$170+ Cheap flights from Missouri to Idaho Falls (IDA)
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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IDA
May 12 — May 191
Round-trip
1 adult, Economy
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Find cheap flights from Missouri to Idaho Falls with Cheapflights
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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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Missouri to Idaho Falls
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Cheapest flights from Missouri to Idaho FallsExplore the most affordable flight options available from Missouri to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 12, 2026.
Explore the most affordable flight options available from Missouri to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 12, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 12/87:00 am
STL
- IDA
1 stop9h 29m
Alaska Airlines
Sat 12/124:03 pm
IDA
- STL
1 stop6h 56m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$319
This Expedia deal was found by Cheapflights users on 4/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:41 pm
STL
- IDA
1 stop20h 45m
Alaska Airlines
Wed 5/206:00 am
IDA
- STL
1 stop8h 16m
Alaska Airlines
Deal found 4/11![Alaska Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 4/10. 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.
Thu 5/286:40 am
MCI
- IDA
1 stop5h 07m
Delta
Sun 6/147:07 pm
IDA
- MCI
1 stop4h 11m
Delta
Deal found 4/10![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 4/9. 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 6/107:02 am
MCI
- IDA
1 stop4h 41m
Delta
Wed 7/17:07 pm
IDA
- MCI
1 stop4h 11m
Delta
Deal found 4/9![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 4/8. 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.
Sun 9/65:10 am
STL
- IDA
1 stop5h 43m
United Airlines
Sun 9/64:10 pm
IDA
- STL
1 stop6h 40m
United Airlines
Deal found 4/8![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 4/10. 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.
Mon 8/35:10 am
STL
- IDA
1 stop5h 40m
United Airlines
Sat 8/84:10 pm
IDA
- STL
1 stop6h 47m
United Airlines
Deal found 4/10![United Airlines logo]()
$365
This Expedia deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Sat 5/235:52 pm
MCI
- IDA
1 stop20h 25m
Alaska Airlines
Tue 5/264:03 pm
IDA
- MCI
1 stop23h 54m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:31 pm
SGF
- IDA
1 stop20h 28m
Allegiant Air
Wed 8/2611:46 am
IDA
- SGF
1 stop23h 42m
Allegiant Air
Deal found 4/8![Allegiant Air logo]()
$384
This United Airlines deal was found by Cheapflights users on 4/8. 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 8/155:40 am
SGF
- IDA
1 stop5h 13m
United Airlines
Sat 8/292:30 pm
IDA
- SGF
1 stop5h 14m
United Airlines
Deal found 4/8![United Airlines logo]()
$390
This United Airlines deal was found by Cheapflights users on 4/10. 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.
Tue 5/265:10 am
STL
- IDA
1 stop5h 40m
United Airlines
Sat 5/305:54 pm
IDA
- STL
1 stop5h 03m
United Airlines
Deal found 4/10![United Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 4/10. 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 5/276:00 am
MCI
- IDA
1 stop4h 50m
United Airlines
Sat 6/135:54 pm
IDA
- MCI
1 stop4h 31m
United Airlines
Deal found 4/10![United Airlines logo]()
$400
This Delta deal was found by Cheapflights users on 4/8. 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.
Tue 6/26:40 am
MCI
- IDA
1 stop5h 07m
Delta
Mon 6/87:07 pm
IDA
- MCI
1 stop4h 11m
Delta
Deal found 4/8![Delta logo]()
$409
Best flights from Missouri to Idaho FallsDiscover carefully curated flight deals from Missouri to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 12, 2026.
Discover carefully curated flight deals from Missouri to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 12, 2026.
This Delta deal was found by Cheapflights users on 4/11. 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 5/286:40 am
MCI
- IDA
1 stop5h 07m
Delta
Sun 6/147:07 pm
IDA
- MCI
1 stop4h 11m
Delta
Deal found 4/11![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 4/9. 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 5/26:00 am
MCI
- IDA
1 stop4h 55m
United Airlines
Tue 5/56:30 am
IDA
- MCI
1 stop5h 13m
United Airlines
Deal found 4/9![United Airlines logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 4/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:00 am
STL
- IDA
1 stop9h 29m
Alaska Airlines
Mon 4/274:06 pm
IDA
- STL
1 stop6h 53m
Alaska Airlines
Deal found 4/8![Alaska Airlines logo]()
$420
This American Airlines deal was found by Cheapflights users on 4/9. 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.
Tue 9/83:43 pm
SGF
- IDA
1 stop6h 39m
American Airlines
Sun 9/131:44 pm
IDA
- SGF
1 stop5h 41m
American Airlines
Deal found 4/9![American Airlines logo]()
$647
This Delta deal was found by Cheapflights users on 4/9. 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.
Sat 6/207:02 am
MCI
- IDA
1 stop4h 41m
Delta
Wed 6/247:07 pm
IDA
- MCI
1 stop4h 11m
Delta
Deal found 4/9![Delta logo]()
$409
This Expedia deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Sat 5/235:52 pm
MCI
- IDA
1 stop20h 25m
Alaska Airlines
Tue 5/264:03 pm
IDA
- MCI
2 stops20h 54m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$421
This United Airlines deal was found by Cheapflights users on 4/10. 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.
Mon 8/35:10 am
STL
- IDA
1 stop5h 40m
United Airlines
Sat 8/84:10 pm
IDA
- STL
1 stop6h 47m
United Airlines
Deal found 4/10![United Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 4/8. 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 6/36:40 am
MCI
- IDA
1 stop5h 07m
Delta
Tue 6/97:07 pm
IDA
- MCI
1 stop4h 11m
Delta
Deal found 4/8![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/27:00 am
MCI
- IDA
1 stop9h 29m
Alaska Airlines
Tue 5/56:00 am
IDA
- MCI
1 stop7h 04m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 4/12. 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.
Sat 6/207:02 am
MCI
- IDA
1 stop4h 41m
Delta
Mon 6/297:07 pm
IDA
- MCI
1 stop4h 11m
Delta
Deal found 4/12![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 4/8. 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.
Sun 9/65:00 am
STL
- IDA
2 stops9h 24m
United Airlines
Sun 9/62:30 pm
IDA
- STL
2 stops9h 00m
United Airlines
Deal found 4/8![United Airlines logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Wed 4/227:00 am
MCI
- IDA
1 stop9h 29m
Alaska Airlines
Sun 4/266:00 am
IDA
- MCI
1 stop7h 04m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$481
This United Airlines deal was found by Cheapflights users on 4/8. 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 8/125:40 am
SGF
- IDA
1 stop5h 13m
United Airlines
Tue 9/12:30 pm
IDA
- SGF
2 stops9h 26m
United Airlines
Deal found 4/8![United Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 4/9. 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.
Mon 5/255:10 am
STL
- IDA
1 stop5h 40m
United Airlines
Mon 6/154:10 pm
IDA
- STL
2 stops19h 01m
United Airlines
Deal found 4/9![United Airlines logo]()
$527
This Expedia deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Fri 9/115:59 pm
STL
- IDA
1 stop20h 09m
Alaska Airlines
Mon 9/141:45 pm
IDA
- STL
2 stops26h 18m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$531
This Delta deal was found by Cheapflights users on 4/11. 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.
Mon 8/31:54 pm
STL
- IDA
2 stops9h 38m
Delta
Sat 8/86:00 am
IDA
- STL
1 stop6h 38m
Delta
Deal found 4/11![Delta logo]()
$550
This United Airlines deal was found by Cheapflights users on 4/9. 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 6/305:10 am
STL
- IDA
1 stop5h 40m
United Airlines
Sat 7/1810:35 am
IDA
- STL
2 stops9h 51m
United Airlines
Deal found 4/9![United Airlines logo]()
$601
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 6/25:50 am
SGF
- IDA
1 stop5h 00m
United Airlines
Wed 6/35:54 pm
IDA
- SGF
1 stop4h 48m
United Airlines
Deal found 4/7![United Airlines logo]()
$626
This deal was found by Cheapflights users on 4/9. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:50 am
SGF
- IDA
1 stop5h 00m
United Airlines
Sun 6/75:54 pm
IDA
- SGF
1 stop4h 48m
United Airlines
Deal found 4/9![United Airlines logo]()
$656
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 6/25:50 am
SGF
- IDA
1 stop5h 00m
United Airlines
Sat 6/65:54 pm
IDA
- SGF
1 stop15h 49m
United Airlines
Deal found 4/7![United Airlines logo]()
$674
This United Airlines deal was found by Cheapflights users on 4/10. 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 4/2511:23 am
SGF
- IDA
2 stops10h 41m
United Airlines
Wed 4/295:20 pm
IDA
- SGF
2 stops30h 27m
United Airlines
Deal found 4/10![United Airlines logo]()
$703
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/286:41 pm
SGF
- IDA
2 stops16h 09m
United Airlines
Sat 6/65:54 pm
IDA
- SGF
1 stop15h 49m
United Airlines
Deal found 4/7![United Airlines logo]()
$762
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/275:50 am
SGF
- IDA
1 stop5h 00m
United Airlines
Sat 6/65:54 pm
IDA
- SGF
2 stops29h 51m
United Airlines
Deal found 4/7![United Airlines logo]()
$782
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/295:50 am
SGF
- IDA
1 stop5h 00m
United Airlines
Mon 6/84:10 pm
IDA
- SGF
2 stops30h 02m
United Airlines
Deal found 4/7![United Airlines logo]()
$800
Last-minute flights from Missouri to Idaho FallsDiscover last-minute flight deals from Missouri to Idaho Falls. Data last updated April 12, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Idaho Falls. Data last updated April 12, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 4/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:00 am
STL
- IDA
1 stop9h 29m
Alaska Airlines
Mon 4/274:06 pm
IDA
- STL
1 stop6h 53m
Alaska Airlines
Deal found 4/8![Alaska Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 4/9. 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 5/26:00 am
MCI
- IDA
1 stop4h 55m
United Airlines
Tue 5/56:30 am
IDA
- MCI
1 stop5h 13m
United Airlines
Deal found 4/9![United Airlines logo]()
$419
This Expedia deal was found by Cheapflights users on 4/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:41 pm
STL
- IDA
1 stop20h 45m
Alaska Airlines
Wed 5/206:00 am
IDA
- STL
1 stop8h 16m
Alaska Airlines
Deal found 4/11![Alaska Airlines logo]()
$339
This Expedia deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Sat 5/235:52 pm
MCI
- IDA
1 stop20h 25m
Alaska Airlines
Tue 5/264:03 pm
IDA
- MCI
1 stop23h 54m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 4/10. 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.
Tue 5/265:10 am
STL
- IDA
1 stop5h 40m
United Airlines
Sat 5/305:54 pm
IDA
- STL
1 stop5h 03m
United Airlines
Deal found 4/10![United Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 4/10. 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 5/276:00 am
MCI
- IDA
1 stop4h 50m
United Airlines
Sat 6/135:54 pm
IDA
- MCI
1 stop4h 31m
United Airlines
Deal found 4/10![United Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 4/10. 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 5/276:00 am
MCI
- IDA
1 stop4h 50m
United Airlines
Sun 6/144:10 pm
IDA
- MCI
1 stop6h 15m
United Airlines
Deal found 4/10![United Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 4/10. 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.
Thu 5/286:40 am
MCI
- IDA
1 stop5h 07m
Delta
Sun 6/147:07 pm
IDA
- MCI
1 stop4h 11m
Delta
Deal found 4/10![Delta logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 4/10. 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.
Thu 5/287:03 pm
MCI
- IDA
1 stop16h 47m
Multiple Airlines
Mon 6/1510:56 pm
IDA
- MCI
2 stops37h 04m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$413
This American Airlines deal was found by Cheapflights users on 4/11. 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 5/285:18 pm
STL
- IDA
1 stop5h 57m
American Airlines
Fri 5/2912:44 pm
IDA
- STL
1 stop6h 46m
American Airlines
Deal found 4/11![American Airlines logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 4/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:21 pm
STL
- IDA
1 stop14h 29m
Multiple Airlines
Fri 5/295:38 pm
IDA
- STL
2 stops14h 17m
Multiple Airlines
Deal found 4/11![Multiple Airlines logo]()
$433
This United Airlines deal was found by Cheapflights users on 4/10. 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.
Sun 5/316:00 am
MCI
- IDA
1 stop4h 50m
United Airlines
Tue 6/94:10 pm
IDA
- MCI
1 stop6h 15m
United Airlines
Deal found 4/10![United Airlines logo]()
$425
One-way flights from Missouri to Idaho FallsSearch for one-way flight options from Missouri to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated April 12, 2026.
Search for one-way flight options from Missouri to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated April 12, 2026.
This American Airlines deal was found by Cheapflights users on 4/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:40 am
STL
- IDA
1 stop6h 52m
American Airlines
Deal found 4/8![American Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:08 pm
STL
- IDA
2 stops13h 50m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$202
This United Airlines deal was found by Cheapflights users on 4/8. 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 8/15:10 am
STL
- IDA
1 stop5h 40m
United Airlines
Deal found 4/8![United Airlines logo]()
$211
This deal was found by Cheapflights users on 4/9. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:10 am
STL
- IDA
1 stop5h 40m
United Airlines
Deal found 4/9![United Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/18:08 pm
STL
- IDA
2 stops13h 47m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$238
This KAYAK deal was found by Cheapflights users on 4/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
STL
- IDA
1 stop6h 26m
Delta
Deal found 4/10![Delta logo]()
$262
This American Airlines deal was found by Cheapflights users on 4/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:00 am
STL
- IDA
1 stop8h 24m
American Airlines
Deal found 4/8![American Airlines logo]()
$316
This United Airlines deal was found by Cheapflights users on 4/8. 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.
Sun 7/56:00 am
STL
- IDA
3 stops28h 50m
United Airlines
Deal found 4/8![United Airlines logo]()
$446
Find flight deals from Missouri to Idaho Falls
Keep the following information in mind while searching for Missouri to Idaho Falls flight deals. Data was last updated April 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (Expedia) |
One-way from | $170 (American Airlines) |
Popular in | November |
Cheapest in | August |
Average price | $390 |
Cheapflights Fare Finder
Customize your flight search to find flights from Missouri to Idaho Falls 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 April 12, 2026.
Use the filters below to find and compare flights from Missouri to Idaho Falls that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Kansas CityIdaho Falls
MCI - IDA
MCIIDA
Kansas City
Thu 5/28
6:40 am-10:47 am
1 stop5h 07m
Idaho Falls Fanning Field
Sun 6/14
7:07 pm-12:18 am
1 stop4h 11m
$399
Quickest round-trip
Kansas CityIdaho Falls
MCI - IDA
MCIIDA
Kansas City
Sat 6/20
7:02 am-10:43 am
1 stop4h 41m
Idaho Falls Fanning Field
Wed 6/24
7:07 pm-12:18 am
1 stop4h 11m
$409
Kansas CityIdaho Falls
MCI - IDA
MCIIDA
Kansas City
Wed 6/3
6:40 am-10:47 am
1 stop5h 07m
Idaho Falls Fanning Field
Tue 6/9
7:07 pm-12:18 am
1 stop4h 11m
$409
Kansas CityIdaho Falls
MCI - IDA
MCIIDA
Kansas City
Sat 5/2
6:00 am-9:55 am
1 stop4h 55m
Idaho Falls Fanning Field
Tue 5/5
6:30 am-12:43 pm
1 stop5h 13m
$419
St. LouisIdaho Falls
STL - IDA
STLIDA
Lambert-St Louis
Thu 4/23
7:00 am-3:29 pm
1 stop9h 29m
Idaho Falls Fanning Field
Mon 4/27
4:06 pm-11:59 pm
1 stop6h 53m
$420
Kansas CityIdaho Falls
MCI - IDA
MCIIDA
Kansas City
Sat 5/23
5:52 pm-1:17 pm
1 stop20h 25m
Idaho Falls Fanning Field
Tue 5/26
4:03 pm-1:57 pm
2 stops20h 54m
$421
St. LouisIdaho Falls
STL - IDA
STLIDA
Lambert-St Louis
Mon 8/3
5:10 am-9:50 am
1 stop5h 40m
Idaho Falls Fanning Field
Sat 8/8
4:10 pm-11:57 pm
1 stop6h 47m
$429
Kansas CityIdaho Falls
MCI - IDA
MCIIDA
Kansas City
Sat 6/20
7:02 am-10:43 am
1 stop4h 41m
Idaho Falls Fanning Field
Mon 6/29
7:07 pm-12:18 am
1 stop4h 11m
$429
Kansas CityIdaho Falls
MCI - IDA
MCIIDA
Kansas City
Sat 5/2
7:00 am-3:29 pm
1 stop9h 29m
Idaho Falls Fanning Field
Tue 5/5
6:00 am-2:04 pm
1 stop7h 04m
$439
St. LouisIdaho Falls
STL - IDA
STLIDA
Lambert-St Louis
Sun 9/6
5:00 am-1:24 pm
2 stops9h 24m
Idaho Falls Fanning Field
Sun 9/6
2:30 pm-12:30 am
2 stops9h 00m
$479
Showing 1-10 of 30 resultsSorted by cheapest first
Best time to book a flight from Missouri to Idaho Falls
Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Missouri with our price prediction graph.
STL-IDA
MCI-IDA
SGF-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 Falls
USMO-IDA
STL-IDA
MCI-IDA
SGF-IDA
What is the cheapest month to book a flight from Missouri to Idaho Falls?
Currently, September is the cheapest month in which you can book a flight from Missouri to Idaho Falls (average of $217). Flying from Missouri to Idaho Falls in November is currently the most expensive (average of $401). 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.
Related info for your journey
Find useful and relevant information for your journey from Missouri to Idaho Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Idaho Falls?
Book flights to Idaho Falls if you plan to visit one of these locationsRexburg
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Missouri to Idaho Falls
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Complete your trip
Complete your trip to Idaho Falls by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Missouri to Idaho Falls by cabin class
Find flights from Missouri to Idaho Falls, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Idaho Falls
Explore flights to Idaho Falls departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 12, 2026.
Missouri and Idaho Falls flights
Browse other Missouri and Idaho Falls flight options. Last updated on April 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Missouri to Idaho Falls flights
Consider these flights traveling from Missouri to Idaho Falls.
Top 2 airlines flying from Missouri to Idaho Falls
Discover the top 2 airlines that operate flights from Missouri to Idaho Falls. 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 April 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$163 | Average$402 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$252 | Average$499 | FlexibilityNo cancel fee | On-time69% |