Cheap flights from St. Louis to Missoula (STL - MSO) from $90

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — MSO
Apr 29 — May 61

The best prices from Lambert-St Louis to Missoula Johnson-Bell Field are usually found in January or February, booked 59 days in advance, depart on a Saturday or Wednesday 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 24, 2024.

Popular in

May

Cheapest in

January

Round-trip from

$402

One-way from

$90
High demand for flights, 12% potential price rise
Best time to find cheap flights, 19% potential price drop
From Lambert-St Louis to Missoula Johnson-Bell Field
One-way flight from Lambert-St Louis to Missoula Johnson-Bell Field

What is the cheapest day to fly round-trip from St. Louis to Missoula?

Friday is generally a great day to depart. Flying on this day could help you save up to 34%.

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

Find a great deal and save up to 147% by booking at least 57 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Missoula within the next two weeks, with the cheapest ticket starting at $629.

What is the cheapest month to fly from St. Louis to Missoula?

The best pricing can be found in the month of January. Prices to Missoula from St. Louis average $583. You can even find prices in January for less than $583, as users have found deals to Missoula from as low as $293. The month of May appears to be one of the more expensive times to travel to Missoula from St. Louis. Flying in the targeted month can save you up to 13%.

When is the cheapest time to fly from St. Louis to Missoula (STL - MSO)?

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 at noon could potentially save you up to 18% on airfare.

Cheap American Airlines flights from St. Louis to Missoula

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Missoula. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,068,701 searches. Data last updated April 24, 2024.
Take a look at some of the lowest-priced American Airlines flights heading from St. Louis to Missoula. Come back soon if you're not finding the exact deal you're looking for.
Wed 6/126:00 amSTL - MSO
2 stops16h 13mAmerican Airlines
Tue 6/186:57 amMSO - STL
2 stops14h 05mAmerican Airlines
Deal found 4/23$408
Tue 9/34:20 pmSTL - MSO
1 stop21h 07mAmerican Airlines
Tue 9/173:00 pmMSO - STL
2 stops18h 15mAmerican Airlines
Deal found 4/23$457
Tue 9/36:58 pmSTL - MSO
2 stops18h 29mAmerican Airlines
Tue 9/173:00 pmMSO - STL
2 stops17h 00mAmerican Airlines
Deal found 4/23$485
Tue 6/256:00 amSTL - MSO
2 stops16h 13mAmerican Airlines
Tue 7/97:00 amMSO - STL
2 stops13h 59mAmerican Airlines
Deal found 4/23$497
Sat 7/276:04 amSTL - MSO
2 stops16h 15mAmerican Airlines
Thu 8/17:00 amMSO - STL
1 stop8h 50mAmerican Airlines
Deal found 4/24$529
Sat 7/136:04 amSTL - MSO
2 stops16h 15mAmerican Airlines
Tue 7/167:00 amMSO - STL
1 stop14h 52mAmerican Airlines
Deal found 4/23$553
Tue 6/256:00 amSTL - MSO
2 stops16h 13mAmerican Airlines
Mon 7/87:00 amMSO - STL
1 stop25h 29mAmerican Airlines
Deal found 4/23$562
Wed 7/1010:19 amSTL - MSO
1 stop12h 00mAmerican Airlines
Sun 7/147:00 amMSO - STL
1 stop8h 50mAmerican Airlines
Deal found 4/23$573

Cheap Frontier flights from St. Louis to Missoula

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and Missoula. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,068,701 searches. Data last updated April 24, 2024.
To aid your search, here are some of the cheapest Frontier flights we've found from St. Louis to Missoula. Deals are refreshing constantly so come back soon for more options.
Thu 5/3011:06 pmSTL - MSO
1 stop16h 13mFrontier
Mon 6/33:09 pmMSO - STL
1 stop21h 00mFrontier
Deal found 4/23$228
Fri 5/248:45 pmSTL - MSO
1 stop18h 20mFrontier
Mon 6/103:08 pmMSO - STL
1 stop22h 39mFrontier
Deal found 4/23$361
Tue 6/253:47 pmSTL - MSO
1 stop23h 36mFrontier
Mon 7/83:14 pmMSO - STL
1 stop19h 36mFrontier
Deal found 4/23$372
Sat 7/1311:41 pmSTL - MSO
1 stop10h 56mFrontier
Sat 7/203:24 pmMSO - STL
1 stop22h 29mFrontier
Deal found 4/23$423

Cheap St. Louis to Missoula flights in April & May 2024

Find cheap flight options from St. Louis to Missoula specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,068,701 searches. Prices were last updated on April 24, 2024.
Scroll through some of the best deals on flights from St. Louis to Missoula in 2024. Check back in a little while for more flight options.
Thu 5/3011:06 pmSTL - MSO
1 stop16h 13mFrontier
Mon 6/33:09 pmMSO - STL
1 stop21h 00mFrontier
Deal found 4/23$228
Fri 5/248:45 pmSTL - MSO
1 stop18h 20mFrontier
Mon 6/103:08 pmMSO - STL
1 stop22h 39mFrontier
Deal found 4/23$361
Thu 5/306:50 pmSTL - MSO
1 stop6h 30mDelta
Mon 6/35:50 amMSO - STL
2 stops9h 07mDelta
Deal found 4/23$443
Thu 5/302:18 pmSTL - MSO
2 stops11h 02mDelta
Mon 6/35:50 amMSO - STL
2 stops9h 07mDelta
Deal found 4/23$448
Fri 5/245:37 pmSTL - MSO
2 stops7h 45mDelta
Mon 6/106:18 pmMSO - STL
1 stop5h 22mDelta
Deal found 4/23$643
Fri 5/245:55 amSTL - MSO
2 stops16h 39mAmerican Airlines
Mon 6/104:01 pmMSO - STL
2 stops15h 53mAmerican Airlines
Deal found 4/23$710

St. Louis to Missoula 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Missoula in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,068,701 searches. Data last updated April 24, 2024.
Scroll through some of the best deals on flights from St. Louis to Missoula in 2024. Check back in a little while for more flight options.
Thu 5/3011:06 pmSTL - MSO
1 stop16h 13mFrontier
Mon 6/33:09 pmMSO - STL
1 stop21h 00mFrontier
Deal found 4/23$228
Fri 5/248:45 pmSTL - MSO
1 stop18h 20mFrontier
Mon 6/103:08 pmMSO - STL
1 stop22h 39mFrontier
Deal found 4/23$361
Tue 6/253:47 pmSTL - MSO
1 stop23h 36mFrontier
Mon 7/83:14 pmMSO - STL
1 stop19h 36mFrontier
Deal found 4/23$372
Tue 6/116:00 amSTL - MSO
2 stops16h 13mAmerican Airlines
Tue 6/186:57 amMSO - STL
2 stops14h 05mAmerican Airlines
Deal found 4/23$408
Sat 7/1311:41 pmSTL - MSO
1 stop10h 56mFrontier
Sat 7/203:24 pmMSO - STL
1 stop22h 29mFrontier
Deal found 4/23$423
Tue 6/117:41 pmSTL - MSO
1 stop14h 59mAlaska Airlines
Tue 6/182:53 pmMSO - STL
1 stop8h 06mAlaska Airlines
Deal found 4/23$430
Fri 9/206:30 amSTL - MSO
1 stop8h 10mDelta
Fri 9/273:00 pmMSO - STL
1 stop5h 31mDelta
Deal found 4/23$438
Sat 9/216:30 amSTL - MSO
2 stops12h 22mDelta
Thu 9/263:00 pmMSO - STL
1 stop5h 31mDelta
Deal found 4/23$443
Thu 5/302:18 pmSTL - MSO
2 stops11h 02mDelta
Mon 6/35:50 amMSO - STL
2 stops9h 07mDelta
Deal found 4/23$448

One-way flights to Missoula from St. Louis

Search for one-way flight options from St. Louis to Missoula. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,068,701 searches. Data last updated April 24, 2024.
Users traveling one-way from St. Louis to Missoula can select one of these great deals. Users can also find round-trip St. Louis to Missoula flights by using the search form above.
Tue 8/610:32 pmSTL - MSO
1 stop16h 52mFrontier
Deal found 4/24$90
Tue 8/65:40 pmSTL - MSO
2 stops7h 42mDelta
Deal found 4/24$224
Tue 8/65:03 pmSTL - MSO
3 stops17h 44mUnited Airlines
Deal found 4/24$456

Find flights from St. Louis to Missoula within your budget

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 3,068,701 searches. Data last updated April 24, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$228 - $470

Route

Depart

Return

Price

Lambert-St LouisMissoula Johnson-Bell Field

STL - MSO

STLMSO

Lambert-St Louis

Thu 5/30

1 stop16h 13m

Missoula Johnson-Bell Field

Mon 6/3

1 stop21h 00m

$228

Lambert-St LouisMissoula Johnson-Bell Field

STL - MSO

STLMSO

Lambert-St Louis

Fri 5/24

1 stop18h 20m

Missoula Johnson-Bell Field

Mon 6/10

1 stop22h 39m

$361

Lambert-St LouisMissoula Johnson-Bell Field

STL - MSO

STLMSO

Lambert-St Louis

Tue 6/25

1 stop23h 36m

Missoula Johnson-Bell Field

Mon 7/8

1 stop19h 36m

$372

Lambert-St LouisMissoula Johnson-Bell Field

STL - MSO

STLMSO

Lambert-St Louis

Wed 6/12

2 stops16h 13m

Missoula Johnson-Bell Field

Tue 6/18

2 stops14h 05m

$408

Lambert-St LouisMissoula Johnson-Bell Field

STL - MSO

STLMSO

Lambert-St Louis

Tue 6/11

1 stop14h 59m

Missoula Johnson-Bell Field

Tue 6/18

1 stop8h 06m

$430

Lambert-St LouisMissoula Johnson-Bell Field

STL - MSO

STLMSO

Lambert-St Louis

Fri 9/20

1 stop7h 51m

Missoula Johnson-Bell Field

Wed 9/25

1 stop8h 18m

$438

Lambert-St LouisMissoula Johnson-Bell Field

STL - MSO

STLMSO

Lambert-St Louis

Sat 9/21

2 stops12h 22m

Missoula Johnson-Bell Field

Thu 9/26

1 stop5h 31m

$443

Lambert-St LouisMissoula Johnson-Bell Field

STL - MSO

STLMSO

Lambert-St Louis

Sat 7/13

1 stop10h 56m

Missoula Johnson-Bell Field

Tue 7/16

1 stop8h 06m

$453

Lambert-St LouisMissoula Johnson-Bell Field

STL - MSO

STLMSO

Lambert-St Louis

Tue 10/1

2 stops23h 20m

Missoula Johnson-Bell Field

Tue 10/8

2 stops21h 57m

$470

Flights are sorted by cheapest first

Deals found on 4/23

When is the best time to 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 January 28, 2024.
The best time to book flights from St. Louis to Missoula is 56 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.
Search Deals

When is the cheapest time to fly from St. Louis to Missoula?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Missoula. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Missoula flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Missoula by month

Plan your trip from St. Louis to Missoula by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Missoula is currently $257 while a round-trip flight costs $400. Price data was last updated on April 21, 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to Missoula (average of $402). Flying from St. Louis to Missoula in June is currently the most expensive (average of $568). 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.

January

$402

February

$445

March

$525

April

$518

May

$509

June

$568

July

$566

August

$488

September

$488

October

$483

November

$484

December

$488

Temperature and rainfall in Missoula by month

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

MSO

Temperature

24.8 - 68 °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 24, 2024.
See what other customers who have flown with American Airlines, Frontier and United Airlines from St. Louis to Missoula have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,110 reviews

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

8.1
Very good
9,110 reviews
8.1
Very good
9,110 reviews

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

8.1
Very good
11,004 reviews
8.1
Very good
9,110 reviews

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

7.4
Good
11,255 reviews
8.1
Very good
9,110 reviews

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

7.3
Good
14,898 reviews
8.1
Very good
9,110 reviews

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

6.3
Okay
4,139 reviews
8.1
Very good
9,110 reviews

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

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.
  • Can I find flights from St. Louis to Missoula for under $300 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Missoula for under $300. The cheapest flight booked recently is on Frontier for just $228, but on average you can expect to pay $435.

  • 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 $228. Other airlines that can offer you cheap pricing are American Airlines, from $408, and Alaska Airlines, from $430. These flights start at 60% 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 Frontier ($90), Delta ($224), and United Airlines ($456).

  • What are the most popular airlines that fly from St. Louis to Missoula?

  • What does STL to MSO mean?

    Lambert-St Louis Airport is STL and Missoula Johnson-Bell Field Airport is MSO. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from St. Louis to Missoula that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Missoula flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Missoula with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Missoula flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from St. Louis to Missoula that allow pets onboard?

    Many airlines flying from St. Louis to Missoula offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Missoula?

    Yes, you can often find last-minute deals on St. Louis to Missoula flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Missoula flight deals updated?

    The St. Louis to Missoula flight deals you see on this page were last updated on 4/23.

See more FAQs

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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 3,068,701 searches. Data last updated April 24, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$316Average$482FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$369Average$613FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$512Average$611FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Missoula?

Cheapflights makes it easy to find St. Louis to Missoula flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Missoula?

Cheapflights helps you find that perfect flight to Missoula from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from St. Louis to Missoula with no change fees?

Yes, we can. To see specific flights from St. Louis to Missoula with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from St. Louis to Missoula become cheaper?

Yes, Cheapflights offers price alerts on St. Louis to Missoula flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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