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$672+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — SJU
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/15. 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 12/305:20 amFCA - SJU
2 stops15h 39mDelta
Sat 1/37:00 amSJU - FCA
2 stops19h 21mDelta
Deal found 12/15$2,075
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/305:15 pmFCA - SJU
1 stop22h 10mUnited Airlines
Sat 1/38:10 amSJU - FCA
1 stop30h 32mUnited Airlines
Deal found 12/15$4,006

Find 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 December 18, 2025.

Round-trip from

$672
(United Airlines)
From Kalispell Glacier Park to San Juan
Search Deals

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 December 18, 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

Mon 1/26

6:00 am-6:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Thu 1/29

3:46 pm-12:59 pm

2 stops24h 13m

$677

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Mon 1/12

5:54 pm-1:05 pm

2 stops16h 11m

San Juan Luis Munoz Marin Intl

Fri 1/23

6:09 am-10:52 pm

2 stops19h 43m

$683

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Mon 1/12

2:42 pm-1:17 pm

2 stops19h 35m

San Juan Luis Munoz Marin Intl

Fri 1/23

2:25 pm-9:59 pm

1 stop10h 34m

$831

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Tue 12/30

5:20 am-11:59 pm

2 stops15h 39m

San Juan Luis Munoz Marin Intl

Sat 1/3

7:00 am-11:21 pm

2 stops19h 21m

$2,075

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Tue 12/30

5:15 pm-6:25 pm

1 stop22h 10m

San Juan Luis Munoz Marin Intl

Sat 1/3

8:10 am-11:42 am

1 stop30h 32m

$4,006

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Mon 1/12

6:25 am-10:26 pm

2 stops13h 01m

San Juan Luis Munoz Marin Intl

Fri 1/23

7:07 am-11:58 pm

2 stops19h 51m

$9,353

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Fri 3/20

6:00 am-9:22 pm

2 stops13h 22m

$1,019

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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 December 18, 2025.
See what other customers who have flown with 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.
United Airlines
7.4
Good
9,091 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

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.

  • How long is the flight from Kalispell to San Juan?

    A quick flight from Kalispell to San Juan can take about 9h 25m. United Airlines provides one of the quickest options available for as low as $677. Kalispell and San Juan are separated by a distance of 3382 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Kalispell to San Juan round-trip?

    Cheapflights users have booked flights from Kalispell to San Juan round-trip from $590.

  • 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.

See more FAQs

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$590Average$1,055FlexibilityNo cancel feeOn-time69%

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