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Kalispell

$240+ Cheap flights from St. Louis to Kalispell (STL - FCA)

STL — FCA
Oct 10 — Oct 171
Sat 10/10
Sat 10/17
1 adult, Economy
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Cheap flight deals from St. Louis to Kalispell

Cheapest flights from St. Louis to Kalispell

Sun 9/205:43 am -
1 stop7h 21m
Thu 9/243:26 pm -
1 stop7h 17m
Deal found 9/5$339
Tue 10/209:00 am -
1 stop5h 28m
Thu 10/296:14 am -
2 stops8h 29m
Deal found 9/9$344
Mon 10/125:10 am -
1 stop5h 54m
Sat 10/175:12 pm -
1 stop5h 32m
Deal found 9/8$359
Thu 11/129:40 am -
2 stops13h 11m
Sun 11/156:14 am -
1 stop5h 24m
Deal found 9/8$364
Sun 10/257:29 am -
1 stop6h 58m
Thu 10/291:58 pm -
1 stop5h 59m
Deal found 9/6$369
Wed 10/149:00 am -
1 stop5h 28m
Sat 10/176:05 am -
2 stops10h 36m
Deal found 9/5$393
Sun 10/256:00 am -
2 stops8h 34m
Thu 10/296:14 am -
2 stops10h 55m
Deal found 9/6$444
Thu 10/155:00 am -
1 stop9h 42m
Tue 10/201:58 pm -
1 stop19h 52m
Deal found 9/8$445

Find flight deals from St. Louis to Kalispell

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$339
(American Airlines)

One-way from

$240
(American Airlines)

Popular in

July

Cheapest in

November

Average price

$428
Provider with most accurate pricing for Lambert-St Louis-Kalispell Glacier Park flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Kalispell Glacier Park flights.
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From Lambert-St Louis to Kalispell Glacier Park
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One-way flight from Lambert-St Louis to Kalispell Glacier Park
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($130 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Kalispell that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Thu 9/17

5:00 am-12:44 pm

1 stop8h 44m

Kalispell Glacier Park

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$240

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Wed 10/14

9:00 am-1:28 pm

1 stop5h 28m

Kalispell Glacier Park

Sat 10/17

2:30 pm-11:44 pm

1 stop8h 14m

$359

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Thu 11/12

8:50 am-1:34 pm

1 stop5h 44m

Kalispell Glacier Park

Sun 11/15

6:14 am-12:38 pm

1 stop5h 24m

$388

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Sun 9/20

5:00 am-2:33 pm

2 stops10h 33m

Kalispell Glacier Park

Thu 9/24

3:26 pm-11:43 pm

1 stop7h 17m

$404

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Mon 10/12

6:00 am-11:28 am

1 stop6h 28m

Kalispell Glacier Park

Sat 10/17

6:05 am-5:41 pm

2 stops10h 36m

$427

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Sun 10/25

6:00 am-1:34 pm

2 stops8h 34m

Kalispell Glacier Park

Thu 10/29

6:14 am-6:09 pm

2 stops10h 55m

$444

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Mon 10/26

4:39 pm-9:51 pm

1 stop6h 12m

Kalispell Glacier Park

Fri 10/30

2:36 pm-8:59 pm

1 stop5h 23m

$449

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Sat 9/19

5:00 pm-10:54 pm

1 stop6h 54m

Kalispell Glacier Park

Wed 9/23

6:00 pm-12:44 am

1 stop5h 44m

$470

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Thu 9/17

6:08 pm-7:43 pm

3 stops26h 35m

Kalispell Glacier Park

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$785

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Sorted by cheapest first

Compare providers for flights from St. Louis to Kalispell

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Kalispell in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Kalispell flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Kalispell flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Kalispell flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Kalispell 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 St. Louis-Kalispell 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 St. Louis to Kalispell

Have a flexible travel schedule? Discover the best time to fly to Kalispell from St. Louis with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Kalispell

How far ahead should I book a flight from St. Louis to Kalispell?

Booking 39 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Kalispell. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis to Kalispell?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Kalispell (average of $288). Flying from St. Louis to Kalispell in July is currently the most expensive (average of $787). 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.

How much does it cost to fly round-trip from St. Louis to Kalispell?

Airfare is below average for this route at the moment.

St. Louis to Kalispell flights typically cost between $363 and $553 in September.
The cheapest round-trip price found within the last 5 days was $339 on American Airlines (Sep 20-Sep 24).

Reviews of airlines servicing Kalispell

Read through reviews of airlines operating flights from St. Louis to Kalispell, such as Alaska Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,904 reviews

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
12,904 reviews
Alaska Airlines
7.9
Good
12,904 reviews

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Delta
7.8
Good
8,553 reviews
Alaska Airlines
7.9
Good
12,904 reviews

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
United Airlines
7.4
Good
10,194 reviews
Alaska Airlines
7.9
Good
12,904 reviews

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
American Airlines
7.1
Good
12,047 reviews
Alaska Airlines
7.9
Good
12,904 reviews

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

  • How long is the flight from St. Louis to Kalispell?

    There are many flights that can get you from St. Louis to Kalispell in 5h 28m. Fly via United Airlines or American Airlines to get the fastest option. The distance from St. Louis to Kalispell is about 1358 mi. This flight may include one or multiple stops.

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

    Currently priced at $189, Delta will fly you from St. Louis to Kalispell and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $258 and $262, respectively. Delta is currently priced 56% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from St. Louis to Kalispell one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $154. Users have also found prices from $159 and $169 on American Airlines and United Airlines, respectively.

  • Can I find deals for flights from St. Louis to Kalispell that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Kalispell by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Kalispell?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Kalispell (average of $288). Flying from St. Louis to Kalispell in July is currently the most expensive (average of $787). 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.

See more FAQs

Traveling to a place near Kalispell?

Book flights to Kalispell if you plan to visit one of these locations
Columbia Falls
East Glacier Park

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from St. Louis to Kalispell

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$189Average$397FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$439FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$262Average$498FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$287Average$447FlexibilityNo cancel feeOn-time75%

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