$185+ Cheap flights from Montana to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — STL
Oct 26 — Nov 21
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 September 26, 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 September 26, 2026.
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/212:37 pm -
1 stop4h 59m
Wed 10/288:50 am -
1 stop5h 59m
Deal found 9/23![United Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 12/225:30 am -
1 stop6h 50m
Fri 12/253:25 pm -
1 stop5h 30m
Deal found 9/22![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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.
Sun 12/205:30 am -
2 stops10h 06m
Thu 12/313:25 pm -
1 stop5h 30m
Deal found 9/22![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 11/236:23 pm -
1 stop5h 17m
Tue 12/15:20 pm -
1 stop7h 57m
Deal found 9/22![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 11/145:20 am -
1 stop7h 11m
Tue 11/172:20 pm -
2 stops9h 45m
Deal found 9/23![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 12/246:16 am -
1 stop7h 28m
Fri 12/253:25 pm -
1 stop5h 30m
Deal found 9/22![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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.
Sun 12/205:30 am -
2 stops8h 14m
Wed 12/303:25 pm -
1 stop5h 30m
Deal found 9/22![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/92:30 pm -
1 stop8h 14m
Tue 10/134:39 pm -
1 stop5h 57m
Deal found 9/24![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/242:30 pm -
2 stops8h 01m
Sat 10/318:50 am -
1 stop5h 44m
Deal found 9/24![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 11/66:30 am -
1 stop5h 08m
Mon 11/96:00 am -
2 stops8h 30m
Deal found 9/25![United Airlines logo]()
$385
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/215:40 am -
2 stops10h 03m
Wed 10/289:47 am -
2 stops9h 00m
Deal found 9/23![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 11/131:00 pm -
2 stops9h 22m
Mon 11/162:21 pm -
2 stops10h 58m
Deal found 9/25![Delta logo]()
$390
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 September 26, 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 September 26, 2026.
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/212:37 pm -
1 stop4h 59m
Wed 10/288:50 am -
1 stop5h 59m
Deal found 9/23![United Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 11/236:23 pm -
1 stop5h 17m
Tue 12/15:20 pm -
1 stop7h 57m
Deal found 9/24![Delta logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 10/291:55 pm -
1 stop9h 04m
Mon 11/26:00 am -
1 stop9h 14m
Deal found 9/25![Alaska Airlines logo]()
$447
This American Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 11/231:52 pm -
2 stops9h 09m
Tue 12/18:12 pm -
2 stops17h 40m
Deal found 9/23![American Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 11/42:45 pm -
1 stop5h 14m
Sat 11/74:39 pm -
1 stop5h 59m
Deal found 9/21![United Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 11/122:30 pm -
1 stop6h 12m
Sat 11/1412:20 pm -
2 stops12h 39m
Deal found 9/26![Delta logo]()
$374
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:48 pm -
1 stop5h 35m
Tue 11/174:39 pm -
1 stop5h 51m
Deal found 9/24![United Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 11/145:20 am -
1 stop7h 11m
Tue 11/172:20 pm -
2 stops9h 45m
Deal found 9/24![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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.
Sun 12/206:16 am -
1 stop7h 28m
Thu 12/313:25 pm -
1 stop5h 30m
Deal found 9/22![Delta logo]()
$374
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 10/105:00 am -
1 stop6h 40m
Wed 10/145:10 am -
1 stop5h 36m
Deal found 9/25![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/96:29 pm -
1 stop5h 15m
Tue 10/133:35 pm -
1 stop5h 40m
Deal found 9/24![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/92:30 pm -
1 stop8h 14m
Tue 10/131:29 pm -
2 stops9h 07m
Deal found 9/24![United Airlines logo]()
$418
This Alaska Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 12/57:01 am -
1 stop8h 39m
Wed 12/96:04 am -
1 stop10h 56m
Deal found 9/22![Alaska Airlines logo]()
$591
This Delta deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 1/86:00 am -
1 stop7h 31m
Sun 1/102:15 pm -
2 stops9h 06m
Deal found 9/26![Delta logo]()
$417
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/2310:45 am -
2 stops11h 14m
Mon 10/264:39 pm -
1 stop6h 12m
Deal found 9/22![United Airlines logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 11/37:03 am -
2 stops13h 56m
Tue 11/178:10 am -
2 stops14h 08m
Deal found 9/25![Alaska Airlines logo]()
$591
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/76:06 am -
1 stop5h 02m
Sat 10/103:35 pm -
1 stop5h 40m
Deal found 9/23![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:00 am -
1 stop6h 38m
Tue 11/108:50 am -
1 stop5h 39m
Deal found 9/21![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:23 pm -
1 stop5h 37m
Tue 11/104:39 pm -
1 stop5h 52m
Deal found 9/21![United Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 11/32:55 pm -
1 stop5h 14m
Tue 11/173:30 pm -
1 stop5h 27m
Deal found 9/25![Delta logo]()
$481
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 1/309:30 am -
1 stop5h 56m
Wed 2/37:30 am -
2 stops12h 10m
Deal found 9/22![United Airlines logo]()
$474
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/286:23 pm -
1 stop5h 21m
Sat 10/313:35 pm -
1 stop5h 19m
Deal found 9/23![Delta logo]()
$495
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/247:15 am -
2 stops13h 06m
Sat 10/314:39 pm -
1 stop6h 12m
Deal found 9/24![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/286:15 am -
1 stop5h 23m
Sat 10/319:40 am -
2 stops13h 07m
Deal found 9/23![United Airlines logo]()
$500
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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.
Sun 10/256:27 pm -
1 stop5h 17m
Wed 10/286:21 am -
2 stops17h 19m
Deal found 9/25![Delta logo]()
$645
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/312:39 pm -
1 stop5h 29m
Sun 1/38:48 am -
1 stop5h 45m
Deal found 9/25![United Airlines logo]()
$556
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 10/262:36 pm -
1 stop5h 23m
Fri 10/304:39 pm -
1 stop6h 12m
Deal found 9/25![United Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 11/56:30 am -
2 stops8h 13m
Sun 11/88:50 am -
1 stop5h 59m
Deal found 9/23![United Airlines logo]()
$601
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 12/59:50 am -
2 stops11h 25m
Wed 12/98:40 am -
1 stop5h 52m
Deal found 9/21![United Airlines logo]()
$610
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 10/182:37 pm -
1 stop8h 07m
Wed 10/219:00 am -
1 stop5h 41m
Deal found 9/25![United Airlines logo]()
$666
Last-minute flights from Montana to St. LouisDiscover last-minute flight deals from Montana to St. Louis. Data last updated September 26, 2026 and is based on user searches.
Discover last-minute flight deals from Montana to St. Louis. Data last updated September 26, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 9/302:37 pm -
1 stop4h 59m
Wed 10/74:39 pm -
1 stop5h 43m
Deal found 9/23![United Airlines logo]()
$453
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/76:06 am -
1 stop5h 02m
Sat 10/103:35 pm -
1 stop5h 40m
Deal found 9/23![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/92:30 pm -
1 stop8h 14m
Tue 10/134:39 pm -
1 stop5h 57m
Deal found 9/24![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/96:29 pm -
1 stop5h 15m
Tue 10/133:35 pm -
1 stop5h 40m
Deal found 9/24![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 10/105:00 am -
1 stop6h 40m
Wed 10/141:29 pm -
2 stops8h 41m
Deal found 9/25![United Airlines logo]()
$430
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/154:15 pm -
1 stop6h 35m
Tue 10/205:20 am -
1 stop8h 20m
Deal found 9/22![Southwest logo]()
$450
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/212:37 pm -
1 stop4h 59m
Wed 10/288:50 am -
1 stop5h 59m
Deal found 9/23![United Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/215:40 am -
2 stops10h 03m
Wed 10/289:47 am -
2 stops9h 00m
Deal found 9/23![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/222:28 pm -
1 stop5h 08m
Thu 10/294:39 pm -
1 stop6h 51m
Deal found 9/24![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/2312:26 pm -
1 stop7h 55m
Mon 10/264:39 pm -
1 stop6h 12m
Deal found 9/22![United Airlines logo]()
$404
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/242:30 pm -
2 stops8h 01m
Sat 10/318:50 am -
1 stop5h 44m
Deal found 9/24![United Airlines logo]()
$384
This Alaska Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 10/291:55 pm -
1 stop9h 04m
Mon 11/26:00 am -
1 stop9h 14m
Deal found 9/25![Alaska Airlines logo]()
$447
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 September 26, 2026.
Search for one-way flight options from Montana to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 26, 2026.
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 12/216:39 pm -
1 stop5h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Delta logo]()
$185
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/176:30 am -
2 stops11h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![United Airlines logo]()
$190
This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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.
Sun 10/256:13 pm -
1 stop5h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Delta logo]()
$190
This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/166:31 pm -
1 stop5h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Delta logo]()
$196
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/162:30 pm -
1 stop8h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![United Airlines logo]()
$220
This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 12/241:16 pm -
1 stop6h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Delta logo]()
$241
This United Airlines deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 10/112:26 pm -
1 stop7h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![United Airlines logo]()
$261
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/164:15 pm -
2 stops7h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Southwest logo]()
$264
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/154:15 pm -
1 stop4h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Southwest logo]()
$266
This Delta deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 10/175:30 am -
2 stops14h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 10/146:31 pm -
1 stop5h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Delta logo]()
$310
This Alaska Airlines deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 10/275:26 pm -
1 stop21h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Alaska Airlines logo]()
$322
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 September 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $348 (United Airlines) |
One-way from | $185 (Delta) |
Popular in | May |
Cheapest in | February |
Average price | $446 |
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 7,457,451 searches. Data last updated September 26, 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
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Sat 10/17
4:30 pm-11:44 pm
1 stop6h 14m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$185
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Mon 12/21
6:39 pm-12:46 am
1 stop5h 07m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$185
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Sun 10/25
6:13 pm-12:44 am
1 stop5h 31m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$190
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Fri 10/16
6:31 pm-12:44 am
1 stop5h 13m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$196
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Fri 10/16
2:30 pm-11:44 pm
1 stop8h 14m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$220
MissoulaSt. Louis
MSO Missoula Johnson-Bell Field - STL Lambert-St Louis
MSOSTL
Missoula Johnson-Bell Field
Thu 12/24
1:16 pm-9:06 pm
1 stop6h 50m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$241
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Thu 10/1
12:26 pm-9:21 pm
1 stop7h 55m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$261
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Fri 10/16
4:15 pm-11:50 pm
1 stop6h 35m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$279
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Thu 10/15
4:15 pm-12:40 am
2 stops7h 25m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$284
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Sat 10/17
5:30 am-8:51 pm
2 stops14h 21m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$309
Showing 1-10 of 55 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.
BZN-STL
HLN-STL
FCA-STL
BIL-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
BZN-STL
HLN-STL
FCA-STL
BIL-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 November is currently the most expensive (average of $547). 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 Montana to St. Louis?
Airfare is typical for this route at the moment.
Montana to St. Louis flights typically cost between $368 and $460 in November.The cheapest round-trip price found within the last 5 days was $369 on Delta (Nov 23-Dec 1).
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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Collinsville
Edwardsville
Glencoe
Chesterfield
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Alternative routes for Montana to St. Louis
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Complete your trip
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Montana and St. Louis flights
Browse other Montana and St. Louis flight options. Last updated on September 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 September 26, 2026.
Montana to St. Louis flights
Consider these flights traveling from Montana to St. Louis.
Top 4 airlines flying from Montana to St. Louis
Discover the top 4 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 7,457,451 searches. Data last updated September 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$164 | Average$388 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$210 | Average$361 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$260 | Average$420 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$274 | Average$508 | FlexibilityNo cancel fee | On-time69% |