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Missoula

$145+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MSO
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Lambert-St Louis to Missoula Johnson-Bell Field are usually found in April or January, booked 27 days in advance, depart on a Tuesday or Friday and return on a Wednesday

Cheap 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 April 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$289
(Delta)

One-way from

$145
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$336
Provider with most accurate pricing for Lambert-St Louis-Missoula Johnson-Bell Field flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Missoula Johnson-Bell Field flights.
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From Lambert-St Louis to Missoula Johnson-Bell Field
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One-way flight from Lambert-St Louis to Missoula Johnson-Bell Field
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Highest demand for flights based on searches. 0% potential increase in price ($0 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from St. Louis to Missoula

Cheapest flights from St. Louis to Missoula
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 April 30, 2025.

This Delta deal was found by Cheapflights users on 4/29. 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 7/97:15 pmSTL - MSO
1 stop6h 09mDelta
Tue 7/156:24 pmMSO - STL
1 stop5h 14mDelta
Deal found 4/29$289
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:30 pmSTL - MSO
1 stop6h 57mHawaiian Airlines
Tue 9/164:14 pmMSO - STL
1 stop6h 45mHawaiian Airlines
Deal found 4/28$339
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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 10/207:00 amSTL - MSO
1 stop7h 52mAlaska Airlines
Mon 10/206:30 pmMSO - STL
1 stop18h 22mAlaska Airlines
Deal found 4/28$390
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/135:15 amSTL - MSO
2 stops11h 27mUnited Airlines
Mon 8/186:15 amMSO - STL
2 stops15h 30mUnited Airlines
Deal found 4/29$465
This American Airlines deal was found by Cheapflights users on 4/28. 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 8/296:06 amSTL - MSO
1 stop7h 10mAmerican Airlines
Tue 9/25:07 amMSO - STL
1 stop14h 12mAmerican Airlines
Deal found 4/28$552

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 April 30, 2025.
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 7/9

7:15 pm-12:24 am

1 stop6h 09m

Missoula Johnson-Bell Field

Tue 7/15

6:24 pm-12:38 am

1 stop5h 14m

$289

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Tue 9/9

6:30 pm-12:27 am

1 stop6h 57m

Missoula Johnson-Bell Field

Tue 9/16

4:14 pm-11:59 pm

1 stop6h 45m

$339

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Mon 10/20

7:00 am-1:52 pm

1 stop7h 52m

Missoula Johnson-Bell Field

Mon 10/20

6:30 pm-1:52 pm

1 stop18h 22m

$390

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Wed 8/13

5:15 am-3:42 pm

2 stops11h 27m

Missoula Johnson-Bell Field

Mon 8/18

6:15 am-10:45 pm

2 stops15h 30m

$465

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Fri 8/29

6:06 am-12:16 pm

1 stop7h 10m

Missoula Johnson-Bell Field

Tue 9/2

5:07 am-8:19 pm

1 stop14h 12m

$552

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Tue 8/5

7:00 am-12:57 pm

1 stop6h 57m

$145

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Tue 8/5

2:15 pm-12:24 am

2 stops11h 09m

$150

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Sat 6/28

7:32 pm-3:17 pm

1 stop20h 45m

$308

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Fri 5/9

8:30 am-9:19 pm

3 stops13h 49m

$560

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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 eDreams the most. eDreams 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.
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

How far ahead should I book a flight from St. Louis to Missoula?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Missoula. Price data was last updated on April 25, 2025.

The best time to book flights from St. Louis to Missoula is 24 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from St. Louis to Missoula?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Missoula (average of $365). Flying from St. Louis to Missoula in June is currently the most expensive (average of $510). 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.

What is the cheapest time of day to fly from STL to MSO?

Find hourly flight availability from St. Louis to Missoula. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

One of the essential ways to save on airfare from St. Louis to Missoula is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 65% on airfare.

Rainfall in Missoula by month

Plan your trip to Missoula by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Missoula ranges from 0.7 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Missoula when rainfall is around 0.7 in.

Temperature in Missoula by month

Plan your trip to Missoula by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Missoula, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 24.8 F).

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 April 30, 2025.
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,968 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,936 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines flying from St. Louis to Missoula round-trip?

    Cheapflights users have booked flights from St. Louis to Missoula round-trip from $289. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $339, and Alaska Airlines, from $390. These flights start at 41% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Missoula one-way?

    The cheapest airlines for a one-way flight from St. Louis to Missoula are American Airlines ($145), Delta ($150), and Alaska Airlines ($308).

  • Can I find deals for flights from St. Louis to Missoula that include hotel bookings?

    Yes. In addition to deals on St. Louis to Missoula flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Missoula?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Missoula.

  • Can I find deals for business class flights from St. Louis to Missoula?

    Yes. Cheapflights offers flight deals from St. Louis to Missoula by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Missoula?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Missoula (average of $365). Flying from St. Louis to Missoula in June is currently the most expensive (average of $510). 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.

See more FAQs

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Top 4 airlines flying from St. Louis to Missoula

Discover the top 4 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$288Average$529FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$297Average$505FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$325Average$528FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$393Average$627FlexibilityNo cancel feeOn-time69%

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