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Puerto Rico

$276+ Cheap flights from Missoula (MSO) to Puerto Rico

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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — SJU
Oct 13 — Oct 201
Mon 10/13
Mon 10/20
1 adult, Economy
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Cheap flight deals from Missoula to Puerto Rico

Keep the following information in mind while searching for Missoula to Puerto Rico flight deals. Data was last updated September 13, 2025.

Round-trip from

$531
(Delta)

One-way from

$276
(Trip.com)

Popular in

January

Cheapest in

October

Average price

$751
From Missoula Johnson-Bell Field to Puerto Rico
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One-way flight from Missoula Johnson-Bell Field to Puerto Rico
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Highest demand for flights based on searches. 24% potential increase in price ($244 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Missoula to Puerto Rico

Cheapest flights from Missoula to Puerto Rico
Explore the most affordable flight options available from Missoula to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2025.

This Delta deal was found by Cheapflights users on 9/11. 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.
Mon 12/86:16 pmMSO - SJU
2 stops15h 28mDelta
Thu 12/113:20 pmSJU - MSO
2 stops12h 15mDelta
Deal found 9/11$531
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 12/87:00 amMSO - SJU
2 stops25h 59mAmerican Airlines
Thu 12/117:00 amSJU - MSO
1 stop16h 33mAmerican Airlines
Deal found 9/11$641
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 12/86:15 amMSO - SJU
1 stop9h 10mUnited Airlines
Thu 12/112:25 pmSJU - MSO
1 stop9h 53mUnited Airlines
Deal found 9/11$688
This American Airlines deal was found by Cheapflights users on 9/12. 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.
Wed 12/241:18 pmMSO - SJU
1 stop12h 46mAmerican Airlines
Fri 1/210:03 pmSJU - MSO
2 stops17h 45mAmerican Airlines
Deal found 9/12$1,015
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Wed 12/242:38 pmMSO - SJU
2 stops12h 33mUnited Airlines
Wed 12/312:05 amSJU - MSO
2 stops14h 31mUnited Airlines
Deal found 9/12$1,051
This American Airlines deal was found by Cheapflights users on 9/12. 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.
Tue 12/231:18 pmMSO - SJU
2 stops25h 48mAmerican Airlines
Thu 1/110:03 pmSJU - MSO
2 stops26h 21mAmerican Airlines
Deal found 9/12$1,075

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missoula to Puerto Rico 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 September 13, 2025.
Use the filters below to find and compare flights from Missoula to Puerto Rico that are best for you.

Fly from

Missoula

Fly to

Puerto Rico

Route

Depart

Return

Price

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Mon 12/8

6:16 pm-12:44 pm

2 stops15h 28m

San Juan Luis Munoz Marin Intl

Thu 12/11

7:00 am-12:35 am

2 stops20h 35m

$531

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 1/8

7:00 am-10:14 pm

1 stop12h 14m

San Juan Luis Munoz Marin Intl

Wed 1/21

6:50 pm-12:25 pm

2 stops20h 35m

$571

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Mon 12/8

6:15 am-6:25 pm

1 stop9h 10m

San Juan Luis Munoz Marin Intl

Thu 12/11

2:25 pm-9:18 pm

1 stop9h 53m

$688

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 1/8

6:00 am-6:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Tue 1/20

2:05 am-1:35 pm

2 stops14h 30m

$725

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Sat 10/11

8:30 am-2:02 am

2 stops15h 32m

$276

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Wed 12/24

1:18 pm-9:36 am

2 stops17h 18m

$398

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 12/25

5:20 am-11:16 pm

2 stops14h 56m

$398

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Wed 12/24

2:38 pm-6:11 am

2 stops12h 33m

$436

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 12/25

7:06 am-5:34 am

1 stop19h 28m

$483

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Wed 12/24

6:00 am-2:54 pm

3 stops29h 54m

$574

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 12 results
1
2

Best time to book a flight from Missoula to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico 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 Puerto Rico
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated September 13, 2025.
Peruse reviews from past customers who have flown with United Airlines from Missoula to Puerto Rico 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.
United Airlines
7.4
Good
8,936 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,936 reviews
United Airlines
7.4
Good
8,936 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Missoula to Puerto Rico. 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 Puerto Rico?

    Located just 5.5 mi from the city center, Missoula Johnson-Bell Field (MSO) is the airport most travelers will use when flying to Puerto Rico from Missoula.

  • How long is the flight from Missoula to Puerto Rico?

    Airlines like Delta, American Airlines, and United Airlines fly from Missoula to Puerto Rico in about 9h 10m. The time it takes to get you to your destination can typically vary by up to 6h 18m. The distance from Missoula to Puerto Rico is about 3342 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Missoula to Puerto Rico one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $398. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Missoula to Puerto Rico for a low price.

  • Can I find deals for flights from Missoula to Puerto Rico that include hotel bookings?

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

  • How can I find direct flights from Missoula to Puerto Rico?

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

  • Can I find deals for business class flights from Missoula to Puerto Rico?

    Yes. Cheapflights offers flight deals from Missoula to Puerto Rico 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 Missoula to Puerto Rico?

    Currently, September is the cheapest month in which you can book a flight from Missoula to Puerto Rico (average of $254). Flying from Missoula to Puerto Rico 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

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Alternative routes for Missoula to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Missoula to Puerto Rico

Discover the top airline that operate flights from Missoula to Puerto Rico. 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 September 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$565Average$764FlexibilityNo cancel feeOn-time69%

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