HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Juan

$515+ Cheap flights from Kalispell (FCA) to San Juan

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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — SJU
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Kalispell to San Juan 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 San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Kalispell (FCA) to San Juan (PR1). 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 July 29, 2025.

Round-trip from

$515
(Delta)
From Kalispell Glacier Park to San Juan
Search Deals

Find flight deals from Kalispell to San Juan

Cheapest flights from Kalispell to San Juan
Explore the most affordable flight options available from Kalispell to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Delta deal was found by Cheapflights users on 7/29. 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 11/26:10 pmFCA - SJU
2 stops15h 50mDelta
Fri 11/77:00 amSJU - FCA
2 stops19h 09mDelta
Deal found 7/29$515
This United Airlines deal was found by Cheapflights users on 7/29. 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 11/25:10 amFCA - SJU
1 stop9h 15mUnited Airlines
Fri 11/78:10 amSJU - FCA
2 stops16h 34mUnited Airlines
Deal found 7/29$605
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Sun 8/244:57 pmFCA - SJU
1 stop19h 08mAmerican Airlines
Tue 8/267:05 pmSJU - FCA
2 stops17h 58mAmerican Airlines
Deal found 7/28$693
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 8/248:02 pmFCA - SJU
2 stops16h 23mAlaska Airlines
Tue 8/263:30 pmSJU - FCA
3 stops26h 41mAlaska Airlines
Deal found 7/28$3,205

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kalispell to San Juan 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 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Kalispell to San Juan that are best for you.

Fly from

Kalispell

Fly to

San Juan

Route

Depart

Return

Price

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Sun 11/2

6:10 pm-1:00 pm

2 stops15h 50m

San Juan Luis Munoz Marin Intl

Fri 11/7

7:00 am-11:09 pm

2 stops19h 09m

$515

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Sun 11/2

5:10 am-5:25 pm

1 stop9h 15m

San Juan Luis Munoz Marin Intl

Fri 11/7

8:10 am-9:44 pm

2 stops16h 34m

$605

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Sun 8/24

4:57 pm-2:05 pm

1 stop19h 08m

San Juan Luis Munoz Marin Intl

Tue 8/26

7:05 pm-11:03 am

2 stops17h 58m

$693

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Sun 8/24

8:02 pm-2:25 pm

2 stops16h 23m

San Juan Luis Munoz Marin Intl

Tue 8/26

3:30 pm-4:11 pm

3 stops26h 41m

$3,205

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Kalispell to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Kalispell with our price prediction graph.
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.

Cheapflights Insights

Everything you need to know about your flight from Kalispell to San Juan
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated July 29, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Kalispell to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Kalispell to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Kalispell to San Juan?

    Most people fly from Kalispell Glacier Park (FCA) if they book a flight from Kalispell to San Juan. On average, Glacier Park has 0 outbound flights to San Juan per day from 1 airline. Kalispell Glacier Park is conveniently located just 8.4 mi from Kalispell’s city center.

  • What are the cheapest airlines flying from Kalispell to San Juan round-trip?

    Cheapflights users have booked flights from Kalispell to San Juan round-trip from $515. Other airlines that can offer you cheap pricing are United Airlines, from $605, and American Airlines, from $693.

  • Can I find deals for flights from Kalispell to San Juan that include hotel bookings?

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

  • How can I find direct flights from Kalispell to San Juan?

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

  • Can I find deals for business class flights from Kalispell to San Juan?

    Yes. Cheapflights offers flight deals from Kalispell to San Juan 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 Kalispell to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Kalispell to San Juan (average of $254). Flying from Kalispell to San Juan in June is currently the most expensive (average of $339). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kalispell to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Bozeman to Luis Munoz Marin Intl flights
Missoula to Luis Munoz Marin Intl flights
Billings to Luis Munoz Marin Intl flights
Kalispell to Luis Munoz Marin Intl flights

Top airline flying from Kalispell to San Juan

Discover the top airline that operate flights from Kalispell to San Juan. 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 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$574Average$793FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.