MSO - STL

$208 Find Cheap Flights from Missoula to St. Louis

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 8/2. 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
1 adult, Economy

KAYAK searches 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
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Flights Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Missoula to St. Louis

Mon, Sep 15 - Tue, Sep 23
Alaska Airlines Logo
4:14 pm - 11:59 pmMSO-STL
6h 45m1 stop
Alaska Airlines Logo
3:35 pm - 12:27 amSTL-MSO
9h 52m1 stop
$350Alaska Airlines
Find Deal
Mon, Sep 15 - Tue, Sep 23
Alaska Airlines Logo
4:14 pm - 11:59 pmMSO-STL
6h 45m1 stop
Alaska Airlines Logo
6:00 am - 11:59 pmSTL-MSO
18h 59m2 stops
$378Alaska Airlines
Find Deal
Wed, Jun 25 - Sun, Jun 29
 Logo
5:44 pm - 5:04 pmMSO-STL
22h 20m2 stops
 Logo
6:12 am - 3:36 pmSTL-MSO
34h 24m2 stops
Wed, Jun 25 - Sun, Jun 29
United Airlines Logo
2:23 pm - 8:48 pmMSO-STL
5h 25m1 stop
United Airlines Logo
5:00 am - 11:38 amSTL-MSO
7h 38m1 stop
$411United Airlines
Find Deal
Mon, Sep 15 - Tue, Sep 23
Delta Logo
6:10 pm - 8:10 amMSO-STL
13h 00m2 stops
Delta Logo
1:30 pm - 12:31 amSTL-MSO
12h 01m2 stops
$415Delta
Find Deal
Wed, Jun 25 - Sun, Jun 29
 Logo
5:44 pm - 5:04 pmMSO-STL
22h 20m2 stops
 Logo
6:12 am - 3:36 pmSTL-MSO
34h 24m3 stops
Wed, Jun 25 - Sun, Jun 29
United Airlines Logo
5:15 pm - 11:59 pmMSO-STL
5h 44m1 stop
United Airlines Logo
5:00 am - 1:23 pmSTL-MSO
9h 23m2 stops
$484United Airlines
Find Deal
Wed, Jun 25 - Sun, Jun 29
 Logo
5:44 pm - 10:33 amMSO-STL
39h 49m3 stops
 Logo
6:12 am - 3:36 pmSTL-MSO
34h 24m3 stops
Sun, Jun 22 - Fri, Jun 27
Delta Logo
5:54 am - 2:36 pmMSO-STL
7h 42m1 stop
Delta Logo
7:15 pm - 12:25 amSTL-MSO
6h 10m1 stop
$798Delta
Find Deal
Sun, Jun 22 - Fri, Jun 27
Delta Logo
5:54 am - 2:36 pmMSO-STL
7h 42m1 stop
Delta Logo
2:15 pm - 11:46 pmSTL-MSO
10h 31m2 stops
$917Delta
Find Deal
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KAYAK's insights & trends for Missoula to St. Louis flights

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 round-trip flights from Missoula to St. Louis clicked on KAYAK for each day over the last 12 months.

For Missoula to St. Louis, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from St. Louis back to Missoula, the best deals are generally found on Tuesday, with Sunday being the most expensive.

Good to know

Low seasonApril
High seasonOctober
Cheapest flight$208
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 5% 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 $208 for a one-way ticket and $350 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 oneworld being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Missoula to St. Louis are Delta and Alaska Airlines. With an average price for the route of $390 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $441 and an overall rating of 8.0.

  • 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.

Top 3 airlines serving 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
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
7.8Comfort
7.1Entertainment
8.1Boarding
8.5Crew
Airline reviews

It sucks, flight delays at FAT caused us to miss a day at lodge and overnight in Seattle. Flight delays coming home also. Never again

2.0 MediocreAnonymous, Jun 2025PSG - JNU
Read more Alaska Airlines reviews

It sucks, flight delays at FAT caused us to miss a day at lodge and overnight in Seattle. Flight delays coming home also. Never again

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

The crew the employees were friendly and excellent. There was a problem with the plane and they had workers there immediately working on it. They made sure the people that had immediate connects knew what gates they had to get to and had them leave the plane first. Very thoughtful.

On time, smooth take off and landing, efficient boarding. Gate staff excellent, stewardess grumpy, but civil enough.

No WiFi available. It was too late to order food also. Guy next to me was huge (not fat) so had his shoulder & thigh next to me the whole way. Plane was delayed leaving PDX due to 8 other planes waiting. Not my best Alaska airlines flight.

Very pleasant and the flight felt like it went by quick

We waited over an hour for our luggage to arrive at the carousel in Seattle.

The plane was delayed a bit. It wasn't a huge problem though, as we were heading back home.

I do wish the the actual airplane I flew on was bigger. But, I made it work.

All flight entertainment is from your own device and there was an $8 charge to connect. also 1 drink and a small bag of pretzels was all that was given to us. other that that the seats were good and the flight itself was as expected.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

Smooth flight, especially take off and landing, and great crew on board. Really loved the stroopwaffles!

Everything you need to know for your flight from Missoula to St. Louis

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