$160+ Cheap flights from Montana to St. Louis (STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — STL
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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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 Montana to St. LouisExplore the most affordable flight options available from Montana to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
Explore the most affordable flight options available from Montana to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/246:35 am -
1 stop7h 37m
Sun 9/275:47 pm -
1 stop6h 56m
Deal found 8/6![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:26 pm -
1 stop7h 17m
Sun 9/275:00 am -
2 stops10h 33m
Deal found 8/9![American Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 8/9. 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 10/2812:31 pm -
2 stops9h 50m
Wed 11/46:00 am -
2 stops12h 33m
Deal found 8/9![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:15 am -
1 stop5h 25m
Wed 9/99:00 am -
1 stop5h 45m
Deal found 8/5![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/284:40 pm -
1 stop6h 00m
Mon 8/314:40 pm -
1 stop6h 27m
Deal found 8/8![United Airlines logo]()
$354
This American Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/243:26 pm -
1 stop7h 17m
Fri 9/255:00 am -
2 stops10h 33m
Deal found 8/6![American Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:30 pm -
1 stop5h 06m
Tue 9/299:00 am -
1 stop5h 48m
Deal found 8/6![United Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am -
1 stop6h 38m
Fri 9/115:00 pm -
1 stop8h 19m
Deal found 8/5![Delta logo]()
$355
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am -
1 stop4h 40m
Mon 9/74:40 pm -
1 stop5h 20m
Deal found 8/6![United Airlines logo]()
$360
This Expedia deal was found by Cheapflights users on 8/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:18 pm -
1 stop20h 03m
Sun 9/277:36 pm -
1 stop22h 05m
Deal found 8/9![Alaska Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:30 pm -
1 stop6h 45m
Tue 9/154:05 pm -
1 stop7h 25m
Deal found 8/5![Southwest logo]()
$369
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:04 pm -
2 stops9h 52m
Fri 11/137:10 am -
1 stop6h 12m
Deal found 8/5![Delta logo]()
$374
Best flights from Montana to St. LouisDiscover carefully curated flight deals from Montana to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
Discover carefully curated flight deals from Montana to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/246:35 am -
1 stop7h 37m
Fri 9/255:47 pm -
1 stop6h 56m
Deal found 8/6![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Thu 10/11:34 pm -
1 stop6h 10m
Sun 10/45:00 am -
1 stop8h 44m
Deal found 8/8![American Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:15 am -
2 stops8h 23m
Wed 9/910:53 am -
2 stops11h 37m
Deal found 8/5![United Airlines logo]()
$349
This Expedia deal was found by Cheapflights users on 8/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:18 pm -
1 stop20h 03m
Sun 9/277:36 pm -
1 stop22h 05m
Deal found 8/9![Alaska Airlines logo]()
$369
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.
Thu 10/224:15 pm -
1 stop6h 30m
Sun 10/256:20 am -
1 stop5h 05m
Deal found 8/4![Southwest logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:34 pm -
1 stop25h 16m
Thu 9/106:39 pm -
2 stops26h 14m
Deal found 8/9![Multiple Airlines logo]()
$491
This Delta deal was found by Cheapflights users on 8/9. 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.
Thu 9/246:35 am -
1 stop7h 37m
Sun 9/276:15 am -
1 stop8h 10m
Deal found 8/9![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/284:40 pm -
1 stop6h 00m
Mon 8/314:40 pm -
1 stop6h 27m
Deal found 8/8![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:57 pm -
1 stop7h 34m
Tue 9/1511:21 am -
2 stops12h 03m
Deal found 8/5![Delta logo]()
$344
This American Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/234:16 pm -
1 stop6h 27m
Sat 9/265:00 am -
2 stops11h 26m
Deal found 8/6![American Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:30 pm -
1 stop5h 06m
Tue 9/299:00 am -
1 stop5h 48m
Deal found 8/6![United Airlines logo]()
$355
This Southwest deal was found by Cheapflights users on 8/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:15 pm -
1 stop4h 30m
Mon 11/212:30 pm -
2 stops10h 20m
Deal found 8/9![Southwest logo]()
$406
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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 1/96:33 am -
1 stop6h 53m
Wed 1/133:24 pm -
1 stop9h 35m
Deal found 8/7![Alaska Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 8/7. 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.
Sat 9/54:30 pm -
1 stop5h 29m
Fri 9/113:13 pm -
1 stop6h 30m
Deal found 8/7![United Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/246:35 am -
1 stop7h 37m
Mon 9/288:46 am -
1 stop5h 39m
Deal found 8/6![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/12:29 pm -
1 stop5h 17m
Mon 9/74:40 pm -
1 stop5h 20m
Deal found 8/9![United Airlines logo]()
$359
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.
Fri 9/41:18 pm -
1 stop18h 06m
Sun 9/66:36 am -
1 stop6h 59m
Deal found 8/4![American Airlines logo]()
$447
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:39 pm -
1 stop5h 05m
Sat 9/265:00 pm -
1 stop6h 31m
Deal found 8/7![Delta logo]()
$383
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:14 pm -
1 stop4h 46m
Wed 9/95:00 pm -
1 stop8h 19m
Deal found 8/5![Delta logo]()
$383
This Expedia deal was found by Cheapflights users on 8/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:00 am -
2 stops15h 30m
Wed 10/77:02 am -
1 stop8h 48m
Deal found 8/9![Alaska Airlines logo]()
$531
This American Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:50 pm -
1 stop6h 24m
Fri 9/48:07 pm -
1 stop21h 07m
Deal found 8/5![American Airlines logo]()
$493
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:04 pm -
1 stop5h 36m
Sat 8/294:40 pm -
1 stop5h 41m
Deal found 8/5![United Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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.
Tue 11/102:02 pm -
1 stop23h 23m
Sat 11/147:00 am -
1 stop9h 27m
Deal found 8/8![Alaska Airlines logo]()
$536
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:30 pm -
1 stop5h 14m
Sun 10/257:00 pm -
1 stop6h 27m
Deal found 8/8![Delta logo]()
$415
This American Airlines deal was found by Cheapflights users on 8/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:50 pm -
1 stop6h 24m
Thu 9/36:00 am -
1 stop11h 10m
Deal found 8/7![American Airlines logo]()
$504
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 12/57:00 am -
1 stop4h 43m
Tue 12/89:13 am -
1 stop5h 00m
Deal found 8/6![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 8/8. 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 1/1610:00 am -
1 stop5h 26m
Wed 1/204:30 pm -
1 stop6h 57m
Deal found 8/8![United Airlines logo]()
$424
This American Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/241:45 pm -
1 stop20h 06m
Sat 1/27:29 am -
1 stop6h 06m
Deal found 8/5![American Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:37 am -
1 stop6h 57m
Sat 8/294:40 pm -
1 stop6h 46m
Deal found 8/5![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:28 am -
1 stop5h 10m
Wed 11/44:39 pm -
1 stop5h 52m
Deal found 8/5![United Airlines logo]()
$429
Last-minute flights from Montana to St. LouisDiscover last-minute flight deals from Montana to St. Louis. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Montana to St. Louis. Data last updated August 10, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/284:40 pm -
1 stop6h 00m
Mon 8/314:40 pm -
1 stop6h 27m
Deal found 8/8![United Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am -
1 stop4h 40m
Mon 9/74:40 pm -
1 stop5h 20m
Deal found 8/6![United Airlines logo]()
$360
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:15 am -
1 stop5h 25m
Wed 9/99:00 am -
1 stop5h 45m
Deal found 8/5![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am -
1 stop6h 38m
Fri 9/115:00 pm -
1 stop8h 19m
Deal found 8/5![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:30 pm -
1 stop6h 45m
Tue 9/154:05 pm -
1 stop7h 25m
Deal found 8/5![Southwest logo]()
$369
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/236:39 pm -
1 stop5h 05m
Sat 9/265:00 pm -
1 stop6h 31m
Deal found 8/6![Delta logo]()
$383
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/246:35 am -
1 stop7h 37m
Sun 9/275:47 pm -
1 stop6h 56m
Deal found 8/6![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:26 pm -
1 stop7h 17m
Sun 9/275:00 am -
2 stops10h 33m
Deal found 8/9![American Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/243:26 pm -
1 stop7h 17m
Fri 9/255:00 am -
2 stops10h 33m
Deal found 8/6![American Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/246:35 am -
1 stop7h 37m
Mon 9/288:46 am -
1 stop5h 39m
Deal found 8/6![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:30 pm -
1 stop5h 06m
Tue 9/299:00 am -
1 stop5h 48m
Deal found 8/6![United Airlines logo]()
$355
This Expedia deal was found by Cheapflights users on 8/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:18 pm -
1 stop20h 03m
Sun 9/277:36 pm -
1 stop22h 05m
Deal found 8/9![Alaska Airlines logo]()
$369
One-way flights from Montana to St. LouisSearch for one-way flight options from Montana to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
Search for one-way flight options from Montana to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/26:20 am -
1 stop5h 20m
Deal found 8/6![United Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:44 pm -
2 stops23h 33m
Deal found 8/9![Multiple Airlines logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/139:42 pm -
1 stop12h 35m
Deal found 8/9![Multiple Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:43 pm -
2 stops21h 34m
Deal found 8/6![Multiple Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Sun 9/209:42 pm -
1 stop12h 35m
Deal found 8/8![Multiple Airlines logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:26 am -
3 stops53h 56m
Deal found 8/6![Multiple Airlines logo]()
$196
This Southwest deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 8/283:30 pm -
1 stop6h 40m
Deal found 8/6![Southwest logo]()
$201
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:05 pm -
1 stop6h 35m
Deal found 8/7![Southwest logo]()
$211
This Expedia deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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.
Thu 9/248:21 pm -
2 stops12h 03m
Deal found 8/6![Alaska Airlines logo]()
$215
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:19 pm -
1 stop5h 25m
Deal found 8/8![United Airlines logo]()
$235
This American Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/241:02 pm -
2 stops10h 25m
Deal found 8/6![American Airlines logo]()
$246
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:48 am -
1 stop5h 46m
Deal found 8/9![United Airlines logo]()
$251
Find flight deals from Montana to St. Louis
Keep the following information in mind while searching for Montana to St. Louis flight deals. Data was last updated August 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $319 (Delta) |
One-way from | $160 (United Airlines) |
Popular in | May |
Cheapest in | February |
Average price | $328 |
Cheapflights Fare Finder
Customize your flight search to find flights from Montana to St. Louis 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 10, 2026.
Use the filters below to find and compare flights from Montana to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Thu 9/24
6:35 am-3:12 pm
1 stop7h 37m
Lambert-St Louis
Fri 9/25
5:47 pm-11:43 pm
1 stop6h 56m
$319
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Thu 10/1
1:34 pm-8:44 pm
1 stop6h 10m
Lambert-St Louis
Sun 10/4
5:00 am-12:44 pm
1 stop8h 44m
$319
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Thu 9/24
6:35 am-3:12 pm
1 stop7h 37m
Lambert-St Louis
Sun 9/27
6:15 am-1:25 pm
1 stop8h 10m
$319
HelenaSt. Louis
HLN Helena - STL Lambert-St Louis
HLNSTL
Helena
Fri 9/11
12:57 pm-9:31 pm
1 stop7h 34m
Lambert-St Louis
Tue 9/15
11:21 am-10:24 pm
2 stops12h 03m
$344
HelenaSt. Louis
HLN Helena - STL Lambert-St Louis
HLNSTL
Helena
Wed 9/2
6:15 am-3:38 pm
2 stops8h 23m
Lambert-St Louis
Wed 9/9
10:53 am-9:30 pm
2 stops11h 37m
$349
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Fri 8/28
4:40 pm-11:40 pm
1 stop6h 00m
Lambert-St Louis
Mon 8/31
4:40 pm-10:07 pm
1 stop6h 27m
$354
HelenaSt. Louis
HLN Helena - STL Lambert-St Louis
HLNSTL
Helena
Fri 9/25
2:30 pm-8:36 pm
1 stop5h 06m
Lambert-St Louis
Tue 9/29
9:00 am-1:48 pm
1 stop5h 48m
$355
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Sat 9/5
4:30 pm-10:59 pm
1 stop5h 29m
Lambert-St Louis
Fri 9/11
3:13 pm-8:43 pm
1 stop6h 30m
$355
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Tue 9/1
2:29 pm-8:46 pm
1 stop5h 17m
Lambert-St Louis
Mon 9/7
4:40 pm-9:00 pm
1 stop5h 20m
$359
HelenaSt. Louis
HLN Helena - STL Lambert-St Louis
HLNSTL
Helena
Fri 9/25
5:18 pm-2:21 pm
1 stop20h 03m
Lambert-St Louis
Sun 9/27
7:36 pm-4:41 pm
1 stop22h 05m
$369
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Montana to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Montana with our price prediction graph.
FCA-STL
HLN-STL
BIL-STL
BZN-STL
MSO-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 Montana to St. Louis
USMT-STL
FCA-STL
HLN-STL
BIL-STL
BZN-STL
What is the cheapest month to book a flight from Montana to St. Louis?
Currently, February is the cheapest month in which you can book a flight from Montana to St. Louis (average of $345). Flying from Montana to St. Louis in August is currently the most expensive (average of $550). 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 Montana to St. Louis. 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 St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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Montana and St. Louis flights
Browse other Montana and St. Louis flight options. Last updated on August 10, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 10, 2026.
Montana to St. Louis flights
Consider these flights traveling from Montana to St. Louis.
Top 3 airlines flying from Montana to St. Louis
Discover the top 3 airlines that operate flights from Montana to St. Louis. 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$164 | Average$415 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$210 | Average$328 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$264 | Average$498 | FlexibilityNo cancel fee | On-time69% |