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Cheap flights from Missoula to St. Louis (MSO - STL) from $438

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 5/22. 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.
MSO — STL
May 3 — May 101
From?
To?
Fri 5/3
Fri 5/10
1 adult, Economy
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The best prices from Missoula Johnson-Bell Field to Lambert-St Louis are usually found in August or September, booked 50 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

Cheap flight deals from Missoula to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Missoula (MSO) to St. Louis (STL). 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 28, 2024.

Popular in

March

Cheapest in

August

Average price

$486

Round-trip from

$323
High demand for flights, 36% potential price rise
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Best time to find cheap flights, 37% potential price drop
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Average for round-trip flights in April 2024
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From Missoula Johnson-Bell Field to Lambert-St Louis
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What is the cheapest day to fly round-trip from Missoula to St. Louis?

Flights from Missoula to St. Louis are found to be more expensive on Sunday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

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

To save up to 60% on this flight, we recommend booking at least 51 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Missoula to St. Louis from $493 1-2 weeks out and tickets from $802 for flights departing within the next 72 hours.

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

Due to multiple factors, expect to potentially pay more when booking in March. For low rates, August can be a great choice for travel to St. Louis. Flights to St. Louis from Missoula in August are about $562 on average during August, but can be found for as low as $334.

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

Unlike in the afternoon, when flights are generally more expensive, you can save up to 24% on flights from Missoula to St. Louis by exploring options for tickets at noon.

Cheap United Airlines flights from Missoula to St. Louis

Explore cheap flight options specifically provided by United Airlines for the route between Missoula and St. Louis. 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 2,944,896 searches. Data last updated April 28, 2024.
Peruse some of the lowest-priced United Airlines flights we've found from Missoula to St. Louis. Be sure to come back soon if the deals available don't appeal to you at this time.
Tue 8/2010:45 amMSO - STL
1 stop9h 43mUnited Airlines
Sat 8/248:05 amSTL - MSO
2 stops14h 27mUnited Airlines
Deal found 4/27$454
Tue 8/205:05 pmMSO - STL
2 stops16h 02mUnited Airlines
Sat 8/244:51 pmSTL - MSO
1 stop21h 36mUnited Airlines
Deal found 4/26$469
Tue 8/205:05 pmMSO - STL
2 stops21h 44mUnited Airlines
Sat 8/248:05 amSTL - MSO
2 stops14h 27mUnited Airlines
Deal found 4/27$474

Cheap Alaska Airlines flights from Missoula to St. Louis

Explore cheap flight options specifically provided by Alaska Airlines for the route between Missoula and St. Louis. 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 2,944,896 searches. Data last updated April 28, 2024.
Some of the best deals we've found on Alaska Airlines flights traveling from Missoula to St. Louis. Check back soon if you're not seeing flights that suit your needs.
Sun 6/25:31 pmMSO - STL
2 stops19h 05mAlaska Airlines
Fri 6/77:41 pmSTL - MSO
2 stops22h 10mAlaska Airlines
Deal found 4/27$511
Wed 5/225:31 pmMSO - STL
2 stops24h 10mAlaska Airlines
Fri 5/317:41 pmSTL - MSO
2 stops22h 10mAlaska Airlines
Deal found 4/28$599
Wed 5/225:31 pmMSO - STL
2 stops19h 05mAlaska Airlines
Mon 5/277:41 pmSTL - MSO
2 stops46h 10mAlaska Airlines
Deal found 4/27$617

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

Find cheap flight options from Missoula to St. Louis specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,944,896 searches. Prices were last updated on April 28, 2024.
Scroll through some of the best deals on flights from Missoula to St. Louis in 2024. For more flight deals, be sure to check back very soon.
Wed 5/226:20 pmMSO - STL
1 stop5h 26mDelta
Fri 5/315:37 pmSTL - MSO
1 stop6h 52mDelta
Deal found 4/27$438
Wed 5/225:50 amMSO - STL
1 stop7h 25mDelta
Sat 6/112:00 pmSTL - MSO
2 stops11h 29mDelta
Deal found 4/28$443
Wed 5/226:00 amMSO - STL
1 stop7h 13mAmerican Airlines
Mon 5/275:21 amSTL - MSO
1 stop8h 37mAmerican Airlines
Deal found 4/27$527
Wed 5/226:00 amMSO - STL
1 stop7h 13mAmerican Airlines
Mon 5/275:55 amSTL - MSO
2 stops16h 39mAmerican Airlines
Deal found 4/27$547
Wed 5/225:40 amMSO - STL
2 stops9h 17mDelta
Fri 5/313:05 pmSTL - MSO
2 stops10h 15mDelta
Deal found 4/27$548
Wed 5/225:31 pmMSO - STL
2 stops24h 10mAlaska Airlines
Fri 5/317:41 pmSTL - MSO
2 stops22h 10mAlaska Airlines
Deal found 4/28$599
Wed 5/225:31 pmMSO - STL
2 stops19h 05mAlaska Airlines
Mon 5/277:41 pmSTL - MSO
2 stops46h 10mAlaska Airlines
Deal found 4/27$617

Missoula to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Missoula and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,944,896 searches. Data last updated April 28, 2024.
Scroll through some of the best deals on flights from Missoula to St. Louis in 2024. For more flight deals, be sure to check back very soon.
Wed 5/226:20 pmMSO - STL
1 stop5h 26mDelta
Sat 6/13:05 pmSTL - MSO
1 stop6h 11mDelta
Deal found 4/28$438
Wed 5/225:50 amMSO - STL
1 stop7h 25mDelta
Sat 6/112:00 pmSTL - MSO
2 stops11h 29mDelta
Deal found 4/28$443
Tue 8/2010:45 amMSO - STL
1 stop9h 43mUnited Airlines
Sat 8/248:05 amSTL - MSO
2 stops14h 27mUnited Airlines
Deal found 4/27$454
Tue 8/205:05 pmMSO - STL
2 stops16h 02mUnited Airlines
Sat 8/244:51 pmSTL - MSO
1 stop21h 36mUnited Airlines
Deal found 4/26$469
Tue 8/205:05 pmMSO - STL
2 stops21h 44mUnited Airlines
Sat 8/248:05 amSTL - MSO
2 stops14h 27mUnited Airlines
Deal found 4/27$474
Fri 7/125:50 amMSO - STL
2 stops10h 14mDelta
Mon 7/153:24 pmSTL - MSO
2 stops9h 53mDelta
Deal found 4/27$478
Sun 6/25:31 pmMSO - STL
2 stops19h 05mAlaska Airlines
Fri 6/77:41 pmSTL - MSO
2 stops22h 10mAlaska Airlines
Deal found 4/27$511
Wed 5/226:00 amMSO - STL
1 stop7h 13mAmerican Airlines
Mon 5/275:21 amSTL - MSO
1 stop8h 37mAmerican Airlines
Deal found 4/27$527
Fri 7/126:17 pmMSO - STL
1 stop5h 22mDelta
Mon 7/156:30 pmSTL - MSO
1 stop6h 47mDelta
Deal found 4/27$538

Find flights from Missoula to St. Louis within your budget

Customize your flight search to find flights from Missoula 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 2,944,896 searches. Data last updated April 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$438 - $547

Route

Depart

Return

Price

Missoula Johnson-Bell FieldLambert-St Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Wed 5/22

1 stop5h 26m

Lambert-St Louis

Sat 6/1

1 stop6h 11m

$438

Missoula Johnson-Bell FieldLambert-St Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Wed 5/22

1 stop7h 25m

Lambert-St Louis

Sat 6/1

2 stops11h 29m

$443

Missoula Johnson-Bell FieldLambert-St Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Tue 8/20

1 stop9h 43m

Lambert-St Louis

Sat 8/24

2 stops14h 27m

$454

Missoula Johnson-Bell FieldLambert-St Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Tue 8/20

2 stops16h 02m

Lambert-St Louis

Sat 8/24

1 stop21h 36m

$469

Missoula Johnson-Bell FieldLambert-St Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Tue 8/20

2 stops21h 44m

Lambert-St Louis

Sat 8/24

2 stops14h 27m

$474

Missoula Johnson-Bell FieldLambert-St Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Fri 7/12

2 stops10h 14m

Lambert-St Louis

Mon 7/15

2 stops9h 53m

$478

Missoula Johnson-Bell FieldLambert-St Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Sun 6/2

2 stops19h 05m

Lambert-St Louis

Fri 6/7

2 stops22h 10m

$511

Missoula Johnson-Bell FieldLambert-St Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Wed 5/22

1 stop7h 13m

Lambert-St Louis

Mon 5/27

1 stop8h 37m

$527

Missoula Johnson-Bell FieldLambert-St Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Wed 5/22

1 stop7h 13m

Lambert-St Louis

Mon 5/27

2 stops16h 39m

$547

Flights are sorted by cheapest first

Deals found on 4/28

When is the best time to book a flight from Missoula to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Missoula to St. Louis. Price data was last updated on January 28, 2024.
To ensure you get the cheapest price possible for a flight from Missoula to St. Louis, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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When is the cheapest time to fly from Missoula to St. Louis?

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

Plan your trip from Missoula to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Missoula to St. Louis is currently $0 while a round-trip flight costs $482. Price data was last updated on April 21, 2024.

Currently, September is the cheapest month in which you can book a flight from Missoula to St. Louis (average of $323). Flying from Missoula to St. Louis in July is currently the most expensive (average of $378). 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

$326

February

$331

March

$357

April

$337

May

$350

June

$373

July

$378

August

$336

September

$323

October

$323

November

$336

December

$326

Temperature and rainfall in St. Louis by month

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

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated April 28, 2024.
Peruse reviews from past customers who have flown with United Airlines, Alaska Airlines and Delta from Missoula to St. Louis to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,110 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Reviews

1 / 10

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

Alaska Airlines
8.1
Very good
9,110 reviews
Alaska Airlines
8.1
Very good
9,110 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Reviews

1 / 10

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

Delta
8.1
Very good
10,932 reviews
Alaska Airlines
8.1
Very good
9,110 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Reviews

1 / 10

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

United Airlines
7.4
Good
11,221 reviews
Alaska Airlines
8.1
Very good
9,110 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

Reviews

1 / 10

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

American Airlines
7.3
Good
14,844 reviews
Alaska Airlines
8.1
Very good
9,110 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Entertainment

7.3

Food

7.3

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 Missoula to St. Louis. 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 Missoula to St. Louis for under $500 on Cheapflights?

    Yes, there are multiple flights from Missoula to St. Louis for under $500. The cheapest flight booked recently is on Delta for just $438, but on average you can expect to pay $515.

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

    Our cheapest airline available from Missoula to St. Louis is Delta. Our recent data shows that you can find tickets from as low as $438 on this airline. Additional options worth looking into are United Airlines and Alaska Airlines, starting at $454 and $511 round-trip. These flights start at 22% lower than the current average price 3 months from now.

  • What does MSO to STL mean?

    Great question - MSO to STL just means Missoula Johnson-Bell Field Airport to Lambert-St Louis Airport. Now you’ll know what these unique codes when you look for flights!

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

    The amount of baggage you can bring on your Missoula to St. Louis 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 Missoula to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Missoula to St. Louis 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 Missoula to St. Louis that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Missoula to St. Louis 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 Missoula to St. Louis that allow pets onboard?

    Many airlines flying from Missoula to St. Louis 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 Missoula to St. Louis?

    Yes, you can often find last-minute deals on Missoula to St. Louis 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 Missoula to St. Louis flight deals updated?

    The Missoula to St. Louis flight deals you see on this page were last updated on 4/28.

See more FAQs

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Top 2 airlines flying from Missoula to St. Louis

Discover the top 2 airlines that operate flights from Missoula 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 2,944,896 searches. Data last updated April 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$345Average$563FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$418Average$582FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
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Search flights from Missoula to St. Louis by cabin class

Find flights from Missoula to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Missoula to St. Louis. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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Millions of users choose and trust Cheapflights to book the best flight deals from Missoula to St. Louis for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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Yes! Cheapflights helps users easily find flights from Missoula to St. Louis with no change fees.

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Of course! You can now track prices for flights from Missoula to St. Louis and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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