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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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — SJU
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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 4/266:15 am
MSO
-
SJU
1 stop9h 23m
United Airlines
Fri 5/17:20 am
SJU
-
MSO
2 stops16h 10m
United Airlines
Deal found 1/25$552
This United Airlines deal was found by Cheapflights users on 1/24. 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 9/306:15 am
MSO
-
SJU
1 stop9h 15m
United Airlines
Sat 10/31:05 am
SJU
-
MSO
2 stops14h 22m
United Airlines
Deal found 1/24$567
This United Airlines deal was found by Cheapflights users on 1/25. 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 4/276:15 am
MSO
-
SJU
2 stops13h 09m
United Airlines
Fri 5/17:20 am
SJU
-
MSO
2 stops16h 10m
United Airlines
Deal found 1/25$581
This Delta deal was found by Cheapflights users on 1/27. 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.
Sat 2/147:30 am
MSO
-
SJU
2 stops13h 28m
Delta
Mon 2/236:15 am
SJU
-
MSO
2 stops20h 15m
Delta
Deal found 1/27$629
This United Airlines deal was found by Cheapflights users on 1/25. 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 4/286:15 am
MSO
-
SJU
1 stop9h 23m
United Airlines
Sun 5/31:40 pm
SJU
-
MSO
1 stop9h 50m
United Airlines
Deal found 1/25$681
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Sat 9/125:32 pm
MSO
-
SJU
2 stops16h 25m
United Airlines
Sat 9/192:00 pm
SJU
-
MSO
1 stop9h 26m
United Airlines
Deal found 1/25$719
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Fri 11/276:15 am
MSO
-
SJU
2 stops13h 07m
United Airlines
Fri 12/42:05 am
SJU
-
MSO
2 stops17h 05m
United Airlines
Deal found 1/26$729
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Fri 11/277:00 am
MSO
-
SJU
1 stop19h 30m
American Airlines
Sat 12/56:00 am
SJU
-
MSO
2 stops17h 33m
American Airlines
Deal found 1/26$759
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 3/276:15 am
MSO
-
SJU
1 stop14h 16m
American Airlines
Mon 4/66:01 pm
SJU
-
MSO
2 stops20h 37m
American Airlines
Deal found 1/27$761

Find 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 January 27, 2026.

Round-trip from

$552
(United Airlines)

One-way from

$276
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$1,245
From Missoula Johnson-Bell Field to Puerto Rico
Search Deals
One-way flight from Missoula Johnson-Bell Field to Puerto Rico
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($266 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($61 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 27, 2026.
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 4/27

6:15 am-9:24 pm

2 stops13h 09m

San Juan Luis Munoz Marin Intl

Fri 5/1

7:20 am-9:30 pm

2 stops16h 10m

$581

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Sun 4/26

6:15 am-8:34 pm

2 stops12h 19m

San Juan Luis Munoz Marin Intl

Fri 5/1

7:20 am-9:30 pm

2 stops16h 10m

$592

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Sat 2/14

7:30 am-11:58 pm

2 stops13h 28m

San Juan Luis Munoz Marin Intl

Mon 2/23

6:15 am-11:30 pm

2 stops20h 15m

$629

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Tue 4/28

6:15 am-5:38 pm

1 stop9h 23m

San Juan Luis Munoz Marin Intl

Sun 5/3

1:40 pm-9:30 pm

1 stop9h 50m

$681

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Fri 3/27

6:15 am-10:31 pm

1 stop14h 16m

San Juan Luis Munoz Marin Intl

Mon 4/6

6:01 pm-12:38 pm

2 stops20h 37m

$761

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Sat 2/14

1:20 pm-5:24 am

1 stop13h 04m

San Juan Luis Munoz Marin Intl

Mon 2/23

7:01 pm-12:50 pm

2 stops20h 49m

$784

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 4/2

1:20 pm-4:24 am

1 stop13h 04m

San Juan Luis Munoz Marin Intl

Thu 4/9

6:47 am-9:45 pm

1 stop16h 58m

$881

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Mon 4/27

3:55 pm-11:01 pm

3 stops29h 06m

San Juan Luis Munoz Marin Intl

Fri 5/1

11:59 pm-2:59 pm

2 stops17h 00m

$906

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 3/26

1:20 pm-10:40 am

2 stops19h 20m

$276

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Wed 3/25

1:20 pm-4:24 am

1 stop13h 04m

$276

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 15 results
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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 January 27, 2026.
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
9,205 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,205 reviews
United Airlines
7.4
Good
9,205 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 United Airlines and Delta fly from Missoula to Puerto Rico in about 13h 09m. The time it takes to get you to your destination can typically vary by up to 19m. 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.

  • 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.

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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Missoula to Castries flights

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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$442Average$784FlexibilityNo cancel feeOn-time69%

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