$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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — STL
Dec 10 — Dec 171
Round-trip
1 adult, Economy
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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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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 November 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 November 10, 2026.
This Delta deal was found by Cheapflights users on 11/5. 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 12/116:32 pm -
1 stop5h 14m
Sat 12/126:03 am -
1 stop7h 21m
Deal found 11/5![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 12/116:30 am -
1 stop5h 23m
Sat 12/126:30 am -
2 stops9h 53m
Deal found 11/5![United Airlines logo]()
$374
This Southwest deal was found by Cheapflights users on 11/5. 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 12/114:05 pm -
1 stop5h 25m
Sun 12/136:10 am -
1 stop5h 20m
Deal found 11/5![Southwest logo]()
$407
This Delta deal was found by Cheapflights users on 11/5. 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 11/206:29 pm -
1 stop5h 11m
Tue 11/243:30 pm -
1 stop5h 12m
Deal found 11/5![Delta logo]()
$409
This Delta deal was found by Cheapflights users on 11/9. 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 12/22:30 pm -
1 stop7h 56m
Mon 12/76:03 am -
1 stop8h 03m
Deal found 11/9![Delta logo]()
$409
This Delta deal was found by Cheapflights users on 11/9. 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 12/312:28 pm -
2 stops9h 58m
Mon 12/72:33 pm -
2 stops9h 18m
Deal found 11/9![Delta logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:00 am -
1 stop8h 40m
Tue 12/86:04 am -
1 stop7h 10m
Deal found 11/5![Alaska Airlines logo]()
$436
This American Airlines deal was found by Cheapflights users on 11/6. 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.
Mon 12/71:28 pm -
1 stop7h 52m
Fri 12/112:54 pm -
1 stop6h 55m
Deal found 11/6![American Airlines logo]()
$439
This United Airlines deal was found by Cheapflights users on 11/6. 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 11/212:45 pm -
1 stop5h 14m
Wed 11/254:39 pm -
1 stop5h 59m
Deal found 11/6![United Airlines logo]()
$448
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 12/111:52 pm -
2 stops9h 10m
Sun 12/135:00 am -
1 stop9h 02m
Deal found 11/5![American Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 11/9. 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.
Tue 12/112:28 pm -
1 stop8h 00m
Mon 12/76:03 am -
1 stop8h 03m
Deal found 11/9![Delta logo]()
$450
This United Airlines deal was found by Cheapflights users on 11/8. 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.
Thu 12/2412:40 pm -
1 stop5h 22m
Wed 12/307:18 am -
1 stop9h 06m
Deal found 11/8![United Airlines logo]()
$454
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 November 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 November 10, 2026.
This Delta deal was found by Cheapflights users on 11/5. 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.
Mon 3/296:25 pm -
1 stop5h 11m
Fri 4/29:45 am -
2 stops9h 04m
Deal found 11/5![Delta logo]()
$364
This American Airlines deal was found by Cheapflights users on 11/9. 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.
Fri 2/2612:40 pm -
1 stop5h 56m
Mon 3/15:03 am -
1 stop7h 47m
Deal found 11/9![American Airlines logo]()
$433
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:00 am -
1 stop8h 40m
Tue 12/86:04 am -
1 stop7h 10m
Deal found 11/5![Alaska Airlines logo]()
$436
This Southwest deal was found by Cheapflights users on 11/9. 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.
Fri 2/2611:05 am -
2 stops7h 55m
Mon 3/12:40 pm -
2 stops9h 15m
Deal found 11/9![Southwest logo]()
$443
This United Airlines deal was found by Cheapflights users on 11/7. 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 1/62:38 pm -
1 stop5h 00m
Sat 1/94:30 pm -
1 stop5h 45m
Deal found 11/7![United Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 11/5. 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.
Mon 4/126:25 pm -
1 stop5h 11m
Fri 4/163:45 pm -
2 stops7h 47m
Deal found 11/5![Delta logo]()
$364
This Delta deal was found by Cheapflights users on 11/9. 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 4/217:00 am -
1 stop5h 23m
Mon 4/267:30 am -
1 stop5h 54m
Deal found 11/9![Delta logo]()
$389
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/224:08 pm -
1 stop6h 36m
Tue 4/277:00 am -
1 stop9h 31m
Deal found 11/9![Alaska Airlines logo]()
$439
This Southwest deal was found by Cheapflights users on 11/5. 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 12/1111:05 am -
2 stops9h 30m
Sat 12/128:55 am -
2 stops10h 55m
Deal found 11/5![Southwest logo]()
$469
This Delta deal was found by Cheapflights users on 11/9. 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 4/217:00 am -
2 stops8h 45m
Tue 4/272:18 pm -
2 stops9h 23m
Deal found 11/9![Delta logo]()
$399
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/234:08 pm -
1 stop6h 36m
Mon 4/267:00 am -
1 stop9h 31m
Deal found 11/9![Alaska Airlines logo]()
$439
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/126:20 am -
1 stop5h 33m
Wed 12/162:50 pm -
1 stop7h 36m
Deal found 11/5![United Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 11/9. 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 12/32:30 pm -
1 stop7h 56m
Mon 12/76:03 am -
1 stop8h 03m
Deal found 11/9![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 11/7. 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 12/126:15 am -
1 stop5h 38m
Wed 12/168:30 am -
2 stops14h 17m
Deal found 11/7![United Airlines logo]()
$504
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/223:00 pm -
1 stop7h 44m
Tue 4/277:00 am -
1 stop8h 06m
Deal found 11/9![Alaska Airlines logo]()
$459
This Southwest deal was found by Cheapflights users on 11/5. 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 12/117:55 am -
2 stops8h 00m
Sun 12/132:45 pm -
2 stops9h 05m
Deal found 11/5![Southwest logo]()
$537
This Delta deal was found by Cheapflights users on 11/7. 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.
Tue 2/96:10 am -
1 stop7h 34m
Wed 2/107:00 am -
2 stops16h 40m
Deal found 11/7![Delta logo]()
$418
This United Airlines deal was found by Cheapflights users on 11/7. 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 12/1510:40 am -
2 stops11h 19m
Wed 12/165:25 am -
1 stop7h 08m
Deal found 11/7![United Airlines logo]()
$508
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/127:01 am -
1 stop8h 39m
Wed 12/166:04 am -
1 stop7h 19m
Deal found 11/5![Alaska Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 11/9. 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 4/2212:50 pm -
2 stops9h 28m
Mon 4/267:30 am -
1 stop5h 54m
Deal found 11/9![Delta logo]()
$419
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/56:15 am -
2 stops11h 01m
Tue 12/88:40 am -
1 stop5h 56m
Deal found 11/5![United Airlines logo]()
$524
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:54 pm -
1 stop9h 05m
Sun 12/66:04 am -
1 stop7h 10m
Deal found 11/9![Alaska Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 11/9. 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 4/2212:50 pm -
2 stops9h 28m
Tue 4/2712:30 pm -
2 stops11h 11m
Deal found 11/9![Delta logo]()
$425
This Priceline deal was found by Cheapflights users on 11/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:05 pm -
1 stop8h 54m
Thu 12/36:04 am -
1 stop7h 19m
Deal found 11/5![Alaska Airlines logo]()
$514
This Delta deal was found by Cheapflights users on 11/7. 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 2/106:10 am -
1 stop7h 34m
Mon 2/156:29 am -
2 stops9h 28m
Deal found 11/7![Delta logo]()
$443
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 11/206:15 am -
2 stops8h 28m
Tue 11/248:50 am -
1 stop5h 41m
Deal found 11/5![United Airlines logo]()
$604
This Delta deal was found by Cheapflights users on 11/9. 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.
Tue 12/112:28 pm -
1 stop8h 00m
Mon 12/76:03 am -
1 stop8h 03m
Deal found 11/9![Delta logo]()
$450
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/59:30 am -
1 stop10h 27m
Wed 12/98:40 am -
1 stop10h 56m
Deal found 11/5![United Airlines logo]()
$639
This Delta deal was found by Cheapflights users on 11/6. 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.
Sat 11/216:19 pm -
2 stops13h 41m
Wed 11/252:21 pm -
2 stops9h 09m
Deal found 11/6![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 11/9. 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 4/216:00 am -
1 stop7h 31m
Tue 4/277:30 am -
1 stop5h 53m
Deal found 11/9![Delta logo]()
$459
Last-minute flights from Montana to St. LouisDiscover last-minute flight deals from Montana to St. Louis. Data last updated November 10, 2026 and is based on user searches.
Discover last-minute flight deals from Montana to St. Louis. Data last updated November 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 11/5. 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 11/206:29 pm -
1 stop5h 11m
Tue 11/243:30 pm -
1 stop5h 12m
Deal found 11/5![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 11/6. 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 11/212:45 pm -
1 stop5h 14m
Wed 11/254:39 pm -
1 stop5h 59m
Deal found 11/6![United Airlines logo]()
$448
This Delta deal was found by Cheapflights users on 11/9. 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.
Tue 12/112:28 pm -
1 stop8h 00m
Mon 12/76:03 am -
1 stop8h 03m
Deal found 11/9![Delta logo]()
$450
This Delta deal was found by Cheapflights users on 11/9. 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 12/22:30 pm -
1 stop7h 56m
Mon 12/76:03 am -
1 stop8h 03m
Deal found 11/9![Delta logo]()
$409
This Delta deal was found by Cheapflights users on 11/9. 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 12/312:28 pm -
2 stops9h 58m
Mon 12/72:33 pm -
2 stops9h 18m
Deal found 11/9![Delta logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:00 am -
1 stop8h 40m
Tue 12/86:04 am -
1 stop7h 10m
Deal found 11/5![Alaska Airlines logo]()
$436
This American Airlines deal was found by Cheapflights users on 11/6. 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.
Mon 12/71:28 pm -
1 stop7h 52m
Fri 12/112:54 pm -
1 stop6h 55m
Deal found 11/6![American Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 11/5. 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 12/116:32 pm -
1 stop5h 14m
Sat 12/126:03 am -
1 stop7h 21m
Deal found 11/5![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 12/116:30 am -
1 stop5h 23m
Sat 12/126:30 am -
2 stops9h 53m
Deal found 11/5![United Airlines logo]()
$374
This Southwest deal was found by Cheapflights users on 11/5. 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 12/114:05 pm -
1 stop5h 25m
Sun 12/136:10 am -
1 stop5h 20m
Deal found 11/5![Southwest logo]()
$407
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 12/111:52 pm -
2 stops9h 10m
Sun 12/135:00 am -
1 stop9h 02m
Deal found 11/5![American Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 11/8. 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.
Thu 12/2412:40 pm -
1 stop5h 22m
Wed 12/307:18 am -
1 stop9h 06m
Deal found 11/8![United Airlines logo]()
$454
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 November 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 November 10, 2026.
This Delta deal was found by Cheapflights users on 11/6. 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.
Mon 12/216:39 pm -
1 stop5h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Delta logo]()
$185
This Southwest deal was found by Cheapflights users on 11/5. 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.
Wed 12/911:20 am -
2 stops9h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Southwest logo]()
$190
This Delta deal was found by Cheapflights users on 11/5. 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.
Thu 12/241:17 pm -
1 stop6h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Delta logo]()
$195
This Delta deal was found by Cheapflights users on 11/6. 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 12/95:15 am -
1 stop7h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Delta logo]()
$197
This American Airlines deal was found by Cheapflights users on 11/9. 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 12/31:52 pm -
1 stop7h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![American Airlines logo]()
$212
This American Airlines deal was found by Cheapflights users on 11/9. 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.
Fri 2/53:46 pm -
1 stop6h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![American Airlines logo]()
$222
This Southwest deal was found by Cheapflights users on 11/9. 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 12/38:05 am -
2 stops8h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Southwest logo]()
$227
This American Airlines deal was found by Cheapflights users on 11/9. 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.
Mon 12/287:39 am -
1 stop7h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![American Airlines logo]()
$230
This Delta deal was found by Cheapflights users on 11/6. 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 11/267:00 am -
1 stop6h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Delta logo]()
$230
This Southwest deal was found by Cheapflights users on 11/9. 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.
Mon 12/284:10 pm -
2 stops8h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Southwest logo]()
$241
This Southwest deal was found by Cheapflights users on 11/9. 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.
Tue 12/294:10 pm -
2 stops8h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Southwest logo]()
$259
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Mon 12/2110:41 am -
2 stops11h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![United Airlines logo]()
$266
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 November 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $359 (Delta) |
One-way from | $185 (Delta) |
Popular in | May |
Cheapest in | February |
Average price | $547 |
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 November 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
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Wed 12/9
5:15 am-1:21 pm
1 stop7h 06m
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
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Wed 12/9
11:20 am-10:10 pm
2 stops9h 50m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$190
MissoulaSt. Louis
MSO Missoula Johnson-Bell Field - STL Lambert-St Louis
MSOSTL
Missoula Johnson-Bell Field
Fri 11/27
8:30 am-2:41 pm
1 stop5h 11m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$195
MissoulaSt. Louis
MSO Missoula Johnson-Bell Field - STL Lambert-St Louis
MSOSTL
Missoula Johnson-Bell Field
Thu 12/24
1:17 pm-9:06 pm
1 stop6h 49m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$195
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Fri 2/5
1:40 pm-12:04 am
2 stops9h 24m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$227
BozemanSt. Louis
BZN Bozeman Gallatin Field - STL Lambert-St Louis
BZNSTL
Bozeman Gallatin Field
Thu 12/3
11:20 am-10:10 pm
2 stops9h 50m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$227
MissoulaSt. Louis
MSO Missoula Johnson-Bell Field - STL Lambert-St Louis
MSOSTL
Missoula Johnson-Bell Field
Thu 12/24
4:07 pm-11:59 pm
1 stop6h 52m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$230
MissoulaSt. Louis
MSO Missoula Johnson-Bell Field - STL Lambert-St Louis
MSOSTL
Missoula Johnson-Bell Field
Fri 11/27
6:15 am-3:43 pm
2 stops8h 28m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$283
MissoulaSt. Louis
MSO Missoula Johnson-Bell Field - STL Lambert-St Louis
MSOSTL
Missoula Johnson-Bell Field
Thu 12/24
2:39 pm-9:08 pm
1 stop5h 29m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$311
Showing 1-10 of 44 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
MSO-STL
BIL-STL
FCA-STL
GTF-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
MSO-STL
BIL-STL
FCA-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 $558). 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 below average for this route at the moment.
Montana to St. Louis flights typically cost between $479 and $581 in December.The cheapest round-trip price found within the last 5 days was $369 on Delta (Dec 11-Dec 12).
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
Chesterfield
Edwardsville
Glencoe
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Alternative routes for Montana to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Montana to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Montana and St. Louis flights
Browse other Montana and St. Louis flight options. Last updated on November 10, 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 November 10, 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 November 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$164 | Average$426 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$211 | Average$381 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$260 | Average$420 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$279 | Average$518 | FlexibilityNo cancel fee | On-time69% |