$195+ Cheap flights from St. Louis to Missoula (STL - MSO)
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 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MSO
Dec 10 — Dec 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 November 10, 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 November 10, 2026.
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.
Sun 12/207:46 pm -
1 stop6h 00m
Wed 12/306:24 pm -
1 stop5h 22m
Deal found 11/9![Delta logo]()
$389
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.
Sun 12/207:46 pm -
1 stop6h 00m
Fri 12/251:17 pm -
2 stops7h 24m
Deal found 11/9![Delta logo]()
$394
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.
Sun 12/207:46 pm -
1 stop6h 00m
Tue 12/295:30 am -
2 stops10h 06m
Deal found 11/9![Delta logo]()
$429
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 11/197:00 pm -
1 stop6h 20m
Mon 11/236:18 pm -
1 stop5h 22m
Deal found 11/5![Delta logo]()
$459
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 12/246:00 am -
1 stop7h 22m
Thu 12/244:07 pm -
1 stop6h 52m
Deal found 11/9![Alaska Airlines logo]()
$493
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2410:45 am -
2 stops12h 14m
Fri 12/256:00 am -
2 stops10h 08m
Deal found 11/9![United Airlines logo]()
$509
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 12/237:46 pm -
1 stop6h 00m
Fri 12/257:00 am -
1 stop5h 20m
Deal found 11/9![Delta logo]()
$514
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 12/244:32 pm -
1 stop8h 27m
Mon 12/287:00 am -
1 stop7h 34m
Deal found 11/9![Alaska Airlines logo]()
$519
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:37 pm -
1 stop17h 00m
Thu 12/246:53 pm -
2 stops19h 33m
Deal found 11/9![Multiple Airlines logo]()
$520
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 November 10, 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 November 10, 2026.
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.
Sun 12/207:46 pm -
1 stop6h 00m
Wed 12/306:24 pm -
1 stop5h 22m
Deal found 11/9![Delta logo]()
$389
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/157:21 am -
2 stops13h 52m
Fri 1/227:42 am -
2 stops11h 47m
Deal found 11/7![American Airlines logo]()
$471
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 1/164:30 pm -
1 stop6h 22m
Wed 1/209:45 am -
1 stop6h 09m
Deal found 11/7![United Airlines logo]()
$499
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.
Fri 1/157:05 am -
1 stop6h 29m
Fri 1/221:33 pm -
1 stop7h 09m
Deal found 11/7![Delta logo]()
$389
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.
Sun 12/207:46 pm -
1 stop6h 00m
Fri 12/251:17 pm -
2 stops7h 24m
Deal found 11/9![Delta logo]()
$394
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 11/197:00 pm -
1 stop6h 20m
Mon 11/236:18 pm -
1 stop5h 22m
Deal found 11/5![Delta logo]()
$459
Last-minute flights from St. Louis to MissoulaDiscover last-minute flight deals from St. Louis to Missoula. Data last updated November 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Missoula. 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.
Thu 11/197:00 pm -
1 stop6h 20m
Mon 11/236:18 pm -
1 stop5h 22m
Deal found 11/5![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.
Sun 12/207:46 pm -
1 stop6h 00m
Wed 12/306:24 pm -
1 stop5h 22m
Deal found 11/9![Delta logo]()
$389
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.
Sun 12/207:46 pm -
1 stop6h 00m
Fri 12/251:17 pm -
2 stops7h 24m
Deal found 11/9![Delta logo]()
$394
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.
Sun 12/207:46 pm -
1 stop6h 00m
Tue 12/295:30 am -
2 stops10h 06m
Deal found 11/9![Delta logo]()
$429
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:37 pm -
1 stop17h 00m
Thu 12/246:53 pm -
2 stops19h 33m
Deal found 11/9![Multiple Airlines logo]()
$520
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 12/237:46 pm -
1 stop6h 00m
Wed 12/306:24 pm -
1 stop5h 22m
Deal found 11/9![Delta logo]()
$514
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 12/246:00 am -
1 stop7h 22m
Thu 12/244:07 pm -
1 stop6h 52m
Deal found 11/9![Alaska Airlines logo]()
$493
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2410:45 am -
2 stops12h 14m
Fri 12/256:00 am -
2 stops10h 08m
Deal found 11/9![United Airlines logo]()
$509
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 12/244:32 pm -
1 stop8h 27m
Sat 12/264:07 pm -
1 stop6h 52m
Deal found 11/9![Alaska Airlines logo]()
$519
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 November 10, 2026.
Search for one-way flight options from St. Louis to Missoula. Find affordable one-way fares based on user searches. Data last updated November 10, 2026.
This Delta deal was found by Cheapflights users on 11/8. 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.
Sat 1/27:05 am -
1 stop6h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Delta logo]()
$195
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.
Tue 11/242:48 pm -
1 stop7h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![American Airlines logo]()
$315
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.
Tue 11/2410:53 am -
2 stops11h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![United Airlines logo]()
$343
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.
Sat 1/26:00 am -
1 stop8h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![American Airlines logo]()
$383
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.
Sat 1/25:20 am -
2 stops9h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![United Airlines logo]()
$466
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/268:48 am -
1 stop5h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![United Airlines logo]()
$515
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:15 pm -
3 stops43h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$665
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 November 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $389 (Delta) |
One-way from | $195 (Delta) |
Popular in | December |
Cheapest in | March |
Average price | $507 |
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 7,457,451 searches. Data last updated November 10, 2026.
Use the filters below to find and compare flights from St. Louis to Missoula that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Sat 1/2
7:05 am-12:37 pm
1 stop6h 32m
Missoula Johnson-Bell Field
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$195
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Tue 11/24
2:48 pm-9:29 pm
1 stop7h 41m
Missoula Johnson-Bell Field
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$315
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Tue 11/24
10:53 am-9:47 pm
2 stops11h 54m
Missoula Johnson-Bell Field
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$343
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Sat 1/2
6:00 am-1:12 pm
1 stop8h 12m
Missoula Johnson-Bell Field
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$383
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Sun 12/20
7:46 pm-12:46 am
1 stop6h 00m
Missoula Johnson-Bell Field
Wed 12/30
6:24 pm-12:46 am
1 stop5h 22m
$389
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Fri 1/15
7:05 am-12:34 pm
1 stop6h 29m
Missoula Johnson-Bell Field
Fri 1/22
1:33 pm-9:42 pm
1 stop7h 09m
$389
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Sun 12/20
7:46 pm-12:46 am
1 stop6h 00m
Missoula Johnson-Bell Field
Fri 12/25
1:17 pm-9:41 pm
2 stops7h 24m
$394
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Thu 11/19
7:00 pm-12:20 am
1 stop6h 20m
Missoula Johnson-Bell Field
Mon 11/23
6:18 pm-12:40 am
1 stop5h 22m
$459
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Sat 1/2
5:20 am-1:33 pm
2 stops9h 13m
Missoula Johnson-Bell Field
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$466
St. LouisMissoula
STL Lambert-St Louis - MSO Missoula Johnson-Bell Field
STLMSO
Lambert-St Louis
Fri 1/15
7:21 am-8:13 pm
2 stops13h 52m
Missoula Johnson-Bell Field
Fri 1/22
7:42 am-8:29 pm
2 stops11h 47m
$471
Showing 1-10 of 11 resultsSorted by cheapest first
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 November.
| 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.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Missoula
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 November 10, 2026.
See what other customers who have flown with Delta and United 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
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Missoula flight routes
Other flight options
Other flights from St. Louis
Popular flights
Alternative routes for St. Louis to Missoula
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Missoula by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Missoula by cabin class
Find flights from St. Louis to Missoula, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 November 10, 2026.
St. Louis and Missoula flights
Browse other St. Louis and Missoula flight options. Last updated on November 10, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on November 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from St. Louis to Missoula
Discover the top 2 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 7,457,451 searches. Data last updated November 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$448 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$257 | Average$515 | FlexibilityNo cancel fee | On-time69% |