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San Juan

$210+ Cheap flights from Missoula (MSO) to San Juan

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — SJU
dic. 25 — ene. 11
jue. 12/25
jue. 1/1
1 adult, Economy
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Cheap flight deals from Missoula to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Missoula (MSO) 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 noviembre 25, 2025.

Round-trip from

$527
(Delta)

One-way from

$210
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$586
From Missoula Johnson-Bell Field to San Juan
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One-way flight from Missoula Johnson-Bell Field to San Juan
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Highest demand for flights based on searches. 26% potential increase in price ($282 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($63 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Missoula to San Juan

Cheapest flights from Missoula to San Juan
Explore the most affordable flight options available from Missoula to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 25, 2025.

This Delta deal was found by Cheapflights users on 11/23. 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.
dom. 12/76:16 pmMSO - SJU
2 stops15h 42mDelta
mar. 12/167:00 amSJU - MSO
2 stops20h 36mDelta
Deal found 11/23$603
This Delta deal was found by Cheapflights users on 11/23. 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.
dom. 12/76:16 pmMSO - SJU
2 stops15h 42mDelta
mié. 12/173:10 pmSJU - MSO
2 stops12h 26mDelta
Deal found 11/23$617
This United Airlines deal was found by Cheapflights users on 11/23. 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.
dom. 12/76:15 amMSO - SJU
1 stop9h 10mUnited Airlines
dom. 12/148:30 amSJU - MSO
2 stops15h 48mUnited Airlines
Deal found 11/23$638
This Delta deal was found by Cheapflights users on 11/23. 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.
vie. 12/56:16 pmMSO - SJU
2 stops15h 42mDelta
mar. 12/167:00 amSJU - MSO
2 stops17h 53mDelta
Deal found 11/23$653
This Delta deal was found by Cheapflights users on 11/23. 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.
vie. 12/56:16 pmMSO - SJU
2 stops15h 42mDelta
mié. 12/173:10 pmSJU - MSO
2 stops12h 26mDelta
Deal found 11/23$667
This Delta deal was found by Cheapflights users on 11/23. 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.
dom. 12/76:16 pmMSO - SJU
2 stops15h 42mDelta
sáb. 12/137:19 amSJU - MSO
2 stops17h 34mDelta
Deal found 11/23$685
This United Airlines deal was found by Cheapflights users on 11/23. 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.
mar. 12/96:15 amMSO - SJU
1 stop9h 10mUnited Airlines
mié. 12/177:45 amSJU - MSO
2 stops16h 33mUnited Airlines
Deal found 11/23$693
This Delta deal was found by Cheapflights users on 11/23. 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.
vie. 12/56:16 pmMSO - SJU
2 stops15h 42mDelta
vie. 12/127:19 amSJU - MSO
2 stops20h 17mDelta
Deal found 11/23$730
This United Airlines deal was found by Cheapflights users on 11/23. 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.
vie. 12/56:15 amMSO - SJU
2 stops13h 07mUnited Airlines
mié. 12/172:25 pmSJU - MSO
1 stop9h 53mUnited Airlines
Deal found 11/23$743
This United Airlines deal was found by Cheapflights users on 11/23. 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.
mar. 12/96:15 amMSO - SJU
1 stop9h 10mUnited Airlines
jue. 12/112:25 pmSJU - MSO
1 stop9h 53mUnited Airlines
Deal found 11/23$775
This United Airlines deal was found by Cheapflights users on 11/23. 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.
vie. 12/56:15 amMSO - SJU
1 stop9h 10mUnited Airlines
vie. 12/122:25 pmSJU - MSO
1 stop9h 53mUnited Airlines
Deal found 11/23$820

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missoula 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 noviembre 25, 2025.
Use the filters below to find and compare flights from Missoula to San Juan that are best for you.

Fly from

Missoula

Fly to

San Juan

Route

Depart

Return

Price

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

lun. 2/2

6:18 pm-1:06 pm

2 stops15h 48m

San Juan Luis Munoz Marin Intl

mar. 2/10

3:55 pm-12:28 am

2 stops11h 33m

$527

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

lun. 2/2

7:00 am-11:59 pm

2 stops13h 59m

San Juan Luis Munoz Marin Intl

mar. 2/10

7:07 am-8:45 pm

1 stop16h 38m

$531

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

jue. 1/8

1:21 pm-12:30 pm

2 stops20h 09m

San Juan Luis Munoz Marin Intl

mié. 1/21

7:07 am-8:45 pm

1 stop16h 38m

$531

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

mar. 4/7

1:05 pm-11:00 am

2 stops19h 55m

San Juan Luis Munoz Marin Intl

lun. 4/13

6:55 pm-12:25 pm

2 stops19h 30m

$570

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

lun. 2/2

6:00 am-6:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

lun. 2/9

2:05 am-1:35 pm

2 stops14h 30m

$585

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

mié. 12/10

6:16 pm-5:20 pm

2 stops20h 04m

San Juan Luis Munoz Marin Intl

mar. 12/16

7:00 am-12:36 am

2 stops20h 36m

$603

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

dom. 12/7

6:15 am-6:25 pm

1 stop9h 10m

San Juan Luis Munoz Marin Intl

dom. 12/14

8:30 am-9:18 pm

2 stops15h 48m

$638

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

sáb. 12/6

6:16 pm-5:20 pm

2 stops20h 04m

San Juan Luis Munoz Marin Intl

mar. 12/16

7:00 am-9:53 pm

2 stops17h 53m

$653

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

vie. 1/9

10:53 am-1:49 pm

3 stops47h 56m

$210

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

jue. 1/8

7:23 pm-6:02 pm

3 stops43h 39m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Showing 1-10 of 14 results
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2

Best time to book a flight from Missoula to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Missoula 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 Missoula 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 noviembre 25, 2025.
Read through reviews of airlines operating flights from Missoula to San Juan, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,046 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,046 reviews
United Airlines
7.4
Good
9,046 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Missoula 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 Missoula to San Juan?

    Missoula Johnson-Bell Field (MSO) is the airport you will fly out of if you book a flight from Missoula to San Juan. You should not have trouble finding flights to San Juan from Johnson-Bell Field; the airport handles an average of 0 outbound flights to San Juan per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Missoula airport to San Juan. It is only a 5.5 mi journey to Johnson-Bell Field (MSO) from Missoula’s city center.

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

    For as low as $531, Delta can have you in San Juan from Missoula in 13h 59m. There are 3342 mi between Missoula and San Juan. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, United Airlines ($531), offers the cheapest pricing from Missoula to San Juan. Users have found that United Airlines is 33% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missoula 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 Missoula 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
Billings to Luis Munoz Marin Intl flights
Missoula to Luis Munoz Marin Intl flights
Kalispell to Luis Munoz Marin Intl flights

Top airline flying from Missoula to San Juan

Discover the top airline that operate flights from Missoula 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 noviembre 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$531Average$770FlexibilityNo cancel feeOn-time69%

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