$170+ Cheap flights from St. Louis to Missoula (STL - MSO)
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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MSO
Mar 13 — Mar 201
1 adult, Economy
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Find cheap flights from St. Louis to Missoula with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Missoula
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to MissoulaExplore the most affordable flight options available from St. Louis to Missoula. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.
Explore the most affordable flight options available from St. Louis to Missoula. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.
This Trip.com deal was found by Cheapflights users on 2/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/257:00 am
STL
- MSO
1 stop9h 35m
Hawaiian Airlines
Wed 4/14:23 pm
MSO
- STL
1 stop6h 36m
Hawaiian Airlines
Deal found 2/8![Hawaiian Airlines logo]()
$283
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/234:50 pm
STL
- MSO
1 stop5h 36m
United Airlines
Fri 5/292:27 pm
MSO
- STL
1 stop5h 15m
United Airlines
Deal found 2/9![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:12 pm
STL
- MSO
1 stop7h 12m
Delta
Sun 4/55:20 am
MSO
- STL
1 stop6h 57m
Delta
Deal found 2/10![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/281:50 pm
STL
- MSO
2 stops10h 47m
Delta
Tue 6/26:10 pm
MSO
- STL
1 stop5h 20m
Delta
Deal found 2/10![Delta logo]()
$304
This Delta deal was found by Cheapflights users on 2/8. 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.
Fri 8/212:18 pm
STL
- MSO
2 stops11h 06m
Delta
Wed 8/265:40 am
MSO
- STL
1 stop6h 41m
Delta
Deal found 2/8![Delta logo]()
$306
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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.
Sat 8/296:41 am
STL
- MSO
1 stop9h 42m
Alaska Airlines
Wed 9/26:35 am
MSO
- STL
1 stop6h 51m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:05 pm
STL
- MSO
1 stop5h 57m
Delta
Wed 4/15:20 am
MSO
- STL
2 stops8h 04m
Delta
Deal found 2/8![Delta logo]()
$317
This Delta deal was found by Cheapflights users on 2/8. 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.
Fri 2/276:40 pm
STL
- MSO
1 stop5h 50m
Delta
Mon 3/21:16 pm
MSO
- STL
2 stops9h 07m
Delta
Deal found 2/8![Delta logo]()
$319
Best flights from St. Louis to MissoulaDiscover carefully curated flight deals from St. Louis to Missoula that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 11, 2026.
Discover carefully curated flight deals from St. Louis to Missoula that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 11, 2026.
This Trip.com deal was found by Cheapflights users on 2/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/257:00 am
STL
- MSO
1 stop9h 35m
Hawaiian Airlines
Wed 4/14:23 pm
MSO
- STL
1 stop6h 36m
Hawaiian Airlines
Deal found 2/8![Hawaiian Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:12 pm
STL
- MSO
1 stop7h 12m
Delta
Sun 4/55:20 am
MSO
- STL
1 stop6h 57m
Delta
Deal found 2/10![Delta logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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.
Sun 6/77:56 pm
STL
- MSO
1 stop17h 27m
Alaska Airlines
Sun 6/146:36 pm
MSO
- STL
1 stop18h 26m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$314
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Fri 5/226:00 am
STL
- MSO
1 stop6h 35m
United Airlines
Fri 5/292:27 pm
MSO
- STL
1 stop5h 15m
United Airlines
Deal found 2/9![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 2/8. 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.
Fri 2/276:40 pm
STL
- MSO
1 stop5h 50m
Delta
Mon 3/26:10 pm
MSO
- STL
1 stop5h 15m
Delta
Deal found 2/8![Delta logo]()
$314
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:30 pm
STL
- MSO
1 stop18h 02m
Alaska Airlines
Fri 8/76:36 pm
MSO
- STL
1 stop18h 26m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:05 pm
STL
- MSO
1 stop5h 57m
Delta
Wed 4/15:20 am
MSO
- STL
2 stops8h 04m
Delta
Deal found 2/8![Delta logo]()
$317
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:00 am
STL
- MSO
1 stop6h 26m
Delta
Sun 3/16:10 pm
MSO
- STL
1 stop5h 15m
Delta
Deal found 2/10![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:59 pm
STL
- MSO
1 stop6h 25m
Delta
Thu 8/65:45 am
MSO
- STL
1 stop4h 45m
Delta
Deal found 2/11![Delta logo]()
$377
Last-minute flights from St. Louis to MissoulaDiscover last-minute flight deals from St. Louis to Missoula. Data last updated February 11, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Missoula. Data last updated February 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/159:55 am
STL
- MSO
2 stops13h 02m
United Airlines
Tue 2/176:15 am
MSO
- STL
1 stop5h 59m
United Airlines
Deal found 2/11![United Airlines logo]()
$496
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Mon 2/234:30 pm
STL
- MSO
1 stop6h 27m
United Airlines
Fri 2/272:34 pm
MSO
- STL
1 stop4h 52m
United Airlines
Deal found 2/8![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:00 am
STL
- MSO
1 stop6h 26m
Delta
Sun 3/16:10 pm
MSO
- STL
1 stop5h 15m
Delta
Deal found 2/10![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 2/8. 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.
Fri 2/276:40 pm
STL
- MSO
1 stop5h 50m
Delta
Mon 3/26:10 pm
MSO
- STL
1 stop5h 15m
Delta
Deal found 2/8![Delta logo]()
$314
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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.
Fri 2/277:58 am
STL
- MSO
2 stops17h 01m
Alaska Airlines
Mon 3/26:23 am
MSO
- STL
2 stops16h 36m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$483
This Trip.com deal was found by Cheapflights users on 2/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/257:00 am
STL
- MSO
1 stop9h 35m
Hawaiian Airlines
Wed 4/14:23 pm
MSO
- STL
1 stop6h 36m
Hawaiian Airlines
Deal found 2/8![Hawaiian Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:05 pm
STL
- MSO
1 stop5h 57m
Delta
Wed 4/15:20 am
MSO
- STL
2 stops8h 04m
Delta
Deal found 2/8![Delta logo]()
$317
One-way flights from St. Louis to MissoulaSearch for one-way flight options from St. Louis to Missoula. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
Search for one-way flight options from St. Louis to Missoula. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:00 am
STL
- MSO
1 stop6h 26m
Delta
Deal found 2/9![Delta logo]()
$170
Find flight deals from St. Louis to Missoula
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Missoula (MSO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $283 (Trip.com) |
One-way from | $170 (Delta) |
Popular in | December |
Cheapest in | March |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Missoula 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 February 11, 2026.
Use the filters below to find and compare flights from St. Louis to Missoula that are best for you.
Fly from
St. Louis
Fly to
Missoula
Route
Depart
Return
Price
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Wed 3/25
7:00 am-3:35 pm
1 stop9h 35m
Missoula Johnson-Bell Field
Wed 4/1
4:23 pm-11:59 pm
1 stop6h 36m
$283
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Thu 4/2
6:12 pm-12:24 am
1 stop7h 12m
Missoula Johnson-Bell Field
Sun 4/5
5:20 am-1:17 pm
1 stop6h 57m
$299
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Sun 6/7
7:56 pm-12:23 pm
1 stop17h 27m
Missoula Johnson-Bell Field
Sun 6/14
6:36 pm-2:02 pm
1 stop18h 26m
$314
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Fri 2/27
6:40 pm-11:30 pm
1 stop5h 50m
Missoula Johnson-Bell Field
Mon 3/2
6:10 pm-12:25 am
1 stop5h 15m
$314
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Wed 3/25
3:05 pm-8:02 pm
1 stop5h 57m
Missoula Johnson-Bell Field
Wed 4/1
5:20 am-2:24 pm
2 stops8h 04m
$317
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Mon 7/27
7:30 pm-12:32 pm
1 stop18h 02m
Missoula Johnson-Bell Field
Fri 8/7
6:36 pm-2:02 pm
1 stop18h 26m
$339
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Fri 5/22
6:00 am-11:35 am
1 stop6h 35m
Missoula Johnson-Bell Field
Fri 5/29
2:27 pm-8:42 pm
1 stop5h 15m
$349
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Wed 2/25
7:00 am-12:26 pm
1 stop6h 26m
Missoula Johnson-Bell Field
Sun 3/1
6:10 pm-12:25 am
1 stop5h 15m
$349
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Mon 7/27
6:59 pm-12:24 am
1 stop6h 25m
Missoula Johnson-Bell Field
Thu 8/6
5:45 am-11:30 am
1 stop4h 45m
$377
St. LouisMissoula
STL - MSO
STLMSO
Lambert-St Louis
Sat 2/28
3:40 pm-8:01 pm
1 stop5h 21m
$170
Compare providers for flights from St. Louis to Missoula
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Missoula in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Missoula flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Missoula flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Missoula flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Missoula flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Missoula flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Missoula
Have a flexible travel schedule? Discover the best time to fly to Missoula from St. Louis with our price prediction graph.
STL-MSO
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.
Reviews of airlines servicing Missoula
Get insights into the airlines that provide service to Missoula. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missoula. Reviews last updated February 11, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from St. Louis to Missoula have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Missoula. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Missoula
Explore flights to Missoula departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 11, 2026.
St. Louis and Missoula flights
Browse other St. Louis and Missoula flight options. Last updated on February 11, 2026.
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Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on February 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from St. Louis to Missoula
Discover the top 3 airlines that operate flights from St. Louis to Missoula. 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 February 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$257 | Average$480 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$288 | Average$430 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$294 | Average$390 | FlexibilityNo cancel fee | On-time71% |