$200+ Cheap flights from Kalispell to St. Louis (FCA - STL)
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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — STL
Nov 25 — Dec 21
Round-trip
1 adult, Economy
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Find cheap flights from Kalispell to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Kalispell to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Kalispell to St. LouisExplore the most affordable flight options available from Kalispell to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
Explore the most affordable flight options available from Kalispell to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 11/62:36 pm -
1 stop5h 23m
Tue 11/104:39 pm -
1 stop6h 12m
Deal found 10/22![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 10/24. 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.
Sat 11/75:30 am -
2 stops8h 15m
Tue 11/106:00 am -
2 stops9h 40m
Deal found 10/24![Delta logo]()
$409
This Delta deal was found by Cheapflights users on 10/24. 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.
Sun 11/85:30 am -
2 stops11h 45m
Thu 11/126:40 am -
2 stops11h 57m
Deal found 10/24![Delta logo]()
$469
This Delta deal was found by Cheapflights users on 10/22. 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.
Fri 11/66:13 pm -
2 stops14h 29m
Tue 11/106:00 am -
2 stops9h 40m
Deal found 10/22![Delta logo]()
$489
This American Airlines deal was found by Cheapflights users on 10/21. 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 10/231:58 pm -
1 stop5h 59m
Sat 10/317:29 am -
1 stop6h 58m
Deal found 10/21![American Airlines logo]()
$520
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Tue 10/272:36 pm -
1 stop5h 23m
Thu 10/294:39 pm -
1 stop6h 12m
Deal found 10/25![United Airlines logo]()
$521
This Delta deal was found by Cheapflights users on 10/21. 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.
Fri 10/2312:28 pm -
2 stops9h 53m
Sat 10/315:00 pm -
1 stop6h 57m
Deal found 10/21![Delta logo]()
$525
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Tue 10/276:14 am -
2 stops8h 29m
Fri 10/3010:53 am -
2 stops11h 58m
Deal found 10/25![United Airlines logo]()
$531
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 10/262:03 pm -
1 stop8h 56m
Fri 10/304:42 pm -
1 stop7h 17m
Deal found 10/20![Alaska Airlines logo]()
$540
Best flights from Kalispell to St. LouisDiscover carefully curated flight deals from Kalispell to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
Discover carefully curated flight deals from Kalispell to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
This Delta deal was found by Cheapflights users on 10/24. 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.
Sat 11/73:36 pm -
1 stop6h 45m
Tue 11/109:45 am -
1 stop5h 55m
Deal found 10/24![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Fri 11/206:14 am -
1 stop5h 24m
Fri 11/276:00 am -
2 stops8h 34m
Deal found 10/21![United Airlines logo]()
$520
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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.
Fri 1/291:51 pm -
1 stop24h 05m
Thu 2/412:53 pm -
2 stops25h 18m
Deal found 10/25![Alaska Airlines logo]()
$531
This Delta deal was found by Cheapflights users on 10/24. 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.
Sun 11/85:30 am -
2 stops11h 45m
Thu 11/126:40 am -
2 stops11h 57m
Deal found 10/24![Delta logo]()
$469
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 11/222:36 pm -
1 stop5h 25m
Fri 11/276:00 am -
2 stops8h 34m
Deal found 10/23![United Airlines logo]()
$526
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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.
Sun 11/222:09 pm -
1 stop8h 50m
Fri 11/276:00 am -
1 stop7h 27m
Deal found 10/25![Alaska Airlines logo]()
$614
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 1/296:10 am -
2 stops9h 08m
Thu 2/48:15 am -
2 stops11h 12m
Deal found 10/22![United Airlines logo]()
$576
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 12/182:45 pm -
1 stop5h 23m
Thu 12/248:48 am -
1 stop5h 51m
Deal found 10/22![United Airlines logo]()
$588
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Sat 12/192:45 pm -
1 stop5h 23m
Thu 12/245:05 am -
2 stops9h 34m
Deal found 10/22![United Airlines logo]()
$602
Last-minute flights from Kalispell to St. LouisDiscover last-minute flight deals from Kalispell to St. Louis. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Kalispell to St. Louis. Data last updated October 26, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/21. 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 10/231:58 pm -
1 stop5h 59m
Sat 10/317:29 am -
1 stop6h 58m
Deal found 10/21![American Airlines logo]()
$520
This Delta deal was found by Cheapflights users on 10/21. 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.
Fri 10/2312:28 pm -
2 stops9h 53m
Sat 10/315:00 pm -
1 stop6h 57m
Deal found 10/21![Delta logo]()
$525
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 10/262:03 pm -
1 stop8h 56m
Fri 10/304:42 pm -
1 stop7h 17m
Deal found 10/20![Alaska Airlines logo]()
$540
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Tue 10/272:36 pm -
1 stop5h 23m
Thu 10/294:39 pm -
1 stop6h 12m
Deal found 10/25![United Airlines logo]()
$521
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Tue 10/276:14 am -
1 stop5h 24m
Fri 10/308:00 am -
2 stops14h 51m
Deal found 10/25![United Airlines logo]()
$526
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 11/62:36 pm -
1 stop5h 23m
Tue 11/104:39 pm -
1 stop6h 12m
Deal found 10/22![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 10/22. 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.
Fri 11/66:13 pm -
2 stops14h 29m
Tue 11/106:00 am -
2 stops9h 40m
Deal found 10/22![Delta logo]()
$489
This Delta deal was found by Cheapflights users on 10/24. 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.
Sat 11/75:30 am -
2 stops8h 15m
Tue 11/106:00 am -
2 stops9h 40m
Deal found 10/24![Delta logo]()
$409
This Delta deal was found by Cheapflights users on 10/24. 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.
Sun 11/85:30 am -
2 stops11h 45m
Thu 11/126:40 am -
2 stops11h 57m
Deal found 10/24![Delta logo]()
$469
One-way flights from Kalispell to St. LouisSearch for one-way flight options from Kalispell to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
Search for one-way flight options from Kalispell to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Tue 12/86:15 am -
1 stop5h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$200
This Delta deal was found by Cheapflights users on 10/23. 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.
Tue 12/86:16 pm -
2 stops13h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Delta logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:00 am -
3 stops40h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$637
Find flight deals from Kalispell to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Kalispell (FCA) 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 October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $399 (United Airlines) |
One-way from | $200 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Kalispell 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 7,457,451 searches. Data last updated October 26, 2026.
Use the filters below to find and compare flights from Kalispell to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Tue 12/8
6:15 am-12:56 pm
1 stop5h 41m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$200
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Tue 12/8
6:16 pm-9:01 am
2 stops13h 45m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$215
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Sat 11/7
3:36 pm-11:21 pm
1 stop6h 45m
Lambert-St Louis
Tue 11/10
9:45 am-2:40 pm
1 stop5h 55m
$399
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Sun 11/8
5:30 am-6:15 pm
2 stops11h 45m
Lambert-St Louis
Thu 11/12
6:40 am-5:37 pm
2 stops11h 57m
$469
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Fri 11/20
6:14 am-12:38 pm
1 stop5h 24m
Lambert-St Louis
Fri 11/27
6:00 am-1:34 pm
2 stops8h 34m
$520
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Sun 11/22
2:36 pm-9:01 pm
1 stop5h 25m
Lambert-St Louis
Fri 11/27
6:00 am-1:34 pm
2 stops8h 34m
$526
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Fri 1/29
1:51 pm-2:56 pm
1 stop24h 05m
Lambert-St Louis
Thu 2/4
12:53 pm-1:11 pm
2 stops25h 18m
$531
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Fri 1/29
6:10 am-4:18 pm
2 stops9h 08m
Lambert-St Louis
Thu 2/4
8:15 am-6:27 pm
2 stops11h 12m
$576
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Fri 12/18
2:45 pm-9:08 pm
1 stop5h 23m
Lambert-St Louis
Thu 12/24
8:48 am-1:39 pm
1 stop5h 51m
$588
KalispellSt. Louis
FCA Kalispell Glacier Park - STL Lambert-St Louis
FCASTL
Kalispell Glacier Park
Sat 12/19
2:45 pm-9:08 pm
1 stop5h 23m
Lambert-St Louis
Thu 12/24
5:05 am-1:39 pm
2 stops9h 34m
$602
Showing 1-10 of 12 resultsSorted by cheapest first
Compare providers for flights from Kalispell to St. Louis
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 Kalispell to St. Louis in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Kalispell-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kalispell-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kalispell-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Kalispell-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub 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 Kalispell-St. Louis 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 Kalispell to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Kalispell with our price prediction graph.
FCA-STL
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.
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 October 26, 2026.
Peruse reviews from past customers who have flown with Delta and United Airlines from Kalispell to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from Kalispell to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Collinsville
Edwardsville
Glencoe
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Kalispell and St. Louis flights
Browse other Kalispell and St. Louis flight options. Last updated on October 26, 2026.
Other flights from Kalispell
Browse through other flights departing from Kalispell. Flights are based on user searches made on Cheapflights and were last updated on October 26, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 26, 2026.
Top 2 airlines flying from Kalispell to St. Louis
Discover the top 2 airlines that operate flights from Kalispell 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 7,457,451 searches. Data last updated October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$296 | Average$356 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$308 | Average$525 | FlexibilityNo cancel fee | On-time69% |