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MSO - STL

Find cheap flights from Missoula to St. Louis from $119

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Missoula to St. Louis departing on 9/13. 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.
1 adult
0 bags
Sat 5/18
Sat 5/25

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Missoula to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Missoula to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 44,553,814 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Missoula to St. Louis (MSO-STL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Missoula to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:09 pm - 9:25 amMSO-STL
17h 16m1 stop
11:22 pm - 2:19 pmSTL-MSO
15h 57m1 stop
$160Frontier
Find Deal
Fri, May 17 - Sun, May 19
3:14 pm - 11:50 amMSO-STL
19h 36m1 stop
11:41 pm - 9:37 amSTL-MSO
10h 56m1 stop
$230Frontier
Find Deal
Mon, Jul 29 - Sat, Aug 31
3:14 pm - 11:50 amMSO-STL
19h 36m1 stop
11:41 pm - 9:37 amSTL-MSO
10h 56m1 stop
$231Frontier
Find Deal
Mon, Jul 29 - Sat, Aug 31
3:14 pm - 11:50 amMSO-STL
19h 36m1 stop
6:15 pm - 10:23 amSTL-MSO
17h 08m1 stop
Mon, Aug 5 - Fri, Aug 9
1:42 pm - 9:36 pmMSO-STL
6h 54m1 stop
6:59 pm - 12:22 amSTL-MSO
6h 23m1 stop
$438Delta
Find Deal
Tue, Jul 30 - Sun, Aug 11
5:50 am - 2:34 pmMSO-STL
7h 44m1 stop
3:30 pm - 12:22 amSTL-MSO
9h 52m2 stops
$443Delta
Find Deal
Thu, Aug 1 - Mon, Aug 12
6:30 am - 9:09 pmMSO-STL
13h 39m1 stop
8:47 am - 9:31 pmSTL-MSO
13h 44m1 stop
$521United Airlines
Find Deal
Sat, May 4 - Tue, May 7
7:00 am - 9:29 amMSO-STL
25h 29m1 stop
6:26 pm - 12:37 pmSTL-MSO
19h 11m2 stops
$524American Airlines
Find Deal
Mon, Jul 29 - Sat, Aug 31
6:00 am - 7:28 pmMSO-STL
12h 28m1 stop
7:45 am - 9:34 pmSTL-MSO
14h 49m2 stops
$531American Airlines
Find Deal
Wed, May 22 - Sat, Jun 1
5:02 pm - 2:36 pmMSO-STL
20h 34m2 stops
1:45 pm - 3:52 pmSTL-MSO
27h 07m1 stop
$535United Airlines
Find Deal
Fri, Jul 12 - Mon, Jul 15

Flights from Missoula to St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from Missoula to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Missoula to St. Louis?

The average price of all flights from Missoula to St. Louis clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Missoula to St. Louis, look for departures on Wednesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from St. Louis, Saturday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Missoula to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Missoula to St. Louis is August, where tickets cost $354 on average. On the other hand, the most expensive months are March and June, where the average cost of tickets is $879 and $630 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Missoula to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Missoula to St. Louis, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 50 days before departure.

Which airlines provide the cheapest flights from Missoula to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Missoula to St. Louis found on KAYAK was with Frontier for $119. Frontier proposed a round-trip connection from $160 and Delta from $438.

Good to know

Low season

September

High season

April

Cheapest flight

$119
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Missoula to St. Louis

When to book flights from Missoula to St. Louis

Are your dates flexible? Find out the best times to travel from Missoula to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Missoula to St. Louis

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

    In the last 3 days, the lowest price for a flight from Missoula to St. Louis was $119 for a one-way ticket and $160 for a round-trip.

  • Do I need a passport to fly between Missoula and St. Louis?

    No, a passport isn't needed to fly from Missoula to St. Louis. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Missoula to St. Louis?

    When flying out of Missoula you will be using Missoula Johnson-Bell Field. You will be landing at St. Louis, also known as Lambert-St Louis.

  • Which aircraft models fly most regularly from Missoula to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Missoula to St. Louis?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Missoula and St. Louis, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Missoula to St. Louis, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Missoula to St. Louis are Delta and United Airlines. With an average price for the route of $587 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $567 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Missoula to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missoula to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missoula to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Missoula is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Missoula to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Missoula with another airline. Booking your flights between Missoula and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missoula to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Missoula up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Missoula to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Missoula to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Missoula to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 11104 reviews
7.9comfort
8.6crew
7.5food
8.2boarding
8.0entertainment
Airline reviews

Seat back monitors and outlets were dead and not working.

8.0 ExcellentCarl, Apr 2024JFK - FLL
Read more about Delta reviews

Seat back monitors and outlets were dead and not working.

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

It was a crowded flight. They did the best they could.

Service was good for such a short flight. Small plane but smooth flight.

Worst flight in my life. Only was scheduled for a 45 min flight to get our connection flight. It was late by 40 minutes and we missed our connection. Delta was totally useless trying to help and unable to get my family on the next flight because they overbooked it Thus had to get a hotel at my expense and lost a day at Disney as a result. Cost me about a $1000 if you add 2 hotels meals shuttles etc to get thru the day Awful customer service by Delta in Detroit totally useless people

The experience was good and the flight departed on time and landed early

The flight was delayed but we got to our final destination.

Boarding was great. The flight landed early. It took the crew over an hour and a half to bring out drinks. I paid to upgrade my seat to Comfort+ only to be near a crying/screaming baby who was seldom quiet. Noise-cancelling earbuds didn’t even help. Waste of money to upgrade.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

I liked everything about the flight. The service was excellent!

Book cheap flights from Missoula to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Missoula to St. Louis found on KAYAK in the last 72 hours.
9/13Fri
1 stopFrontier
17h 23mMSO-STL
$119
9/13Fri
2 stopsAmerican Airlines
19h 01mMSO-STL
$295
9/13Fri
3 stopsUnited Airlines
24h 49mMSO-STL
$474

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Missoula - St. Louis Flights

Departure:

Missoula (MSO)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Missoula

Cabin classes: