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Cheap flights from Missoula to Puerto Rico from $311

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missoula to Puerto Rico departing on 2/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
1:21 pm - 10:48 am
MSO
-
SJU
18h 27m2 stops
American Airlines Logo
6:00 am - 8:45 pm
SJU
-
MSO
17h 45m2 stops
$608American Airlines
Thu, Jan 8 - Wed, Jan 21
United Airlines Logo
6:15 am - 9:24 pm
MSO
-
SJU
13h 09m2 stops
United Airlines Logo
1:00 am - 1:32 pm
SJU
-
MSO
14h 32m2 stops
$681United Airlines
Sat, May 2 - Tue, May 5
United Airlines Logo
6:15 am - 3:42 pm
MSO
-
SJU
31h 27m3 stops
United Airlines Logo
1:00 am - 1:32 pm
SJU
-
MSO
14h 32m2 stops
$717United Airlines
Sat, May 2 - Tue, May 5
United Airlines Logo
6:15 am - 5:38 pm
MSO
-
SJU
9h 23m1 stop
United Airlines Logo
1:00 am - 1:32 pm
SJU
-
MSO
14h 32m2 stops
$743United Airlines
Sat, May 2 - Tue, May 5
American Airlines Logo
7:00 am - 10:26 pm
MSO
-
SJU
12h 26m1 stop
American Airlines Logo
7:07 am - 8:45 pm
SJU
-
MSO
16h 38m1 stop
$748American Airlines
Thu, Jan 8 - Wed, Jan 21
American Airlines Logo
1:24 pm - 10:07 am
MSO
-
SJU
17h 43m2 stops
American Airlines Logo
6:33 am - 9:49 pm
SJU
-
MSO
17h 16m1 stop
$878American Airlines
Thu, Feb 26 - Sun, Mar 15
United Airlines Logo
6:15 am - 5:38 pm
MSO
-
SJU
9h 23m1 stop
United Airlines Logo
1:40 pm - 9:42 pm
SJU
-
MSO
10h 02m1 stop
$905United Airlines
Sat, May 2 - Wed, May 6
United Airlines Logo
5:15 pm - 8:38 pm
MSO
-
SJU
25h 23m2 stops
United Airlines Logo
1:40 pm - 9:35 pm
SJU
-
MSO
9h 55m1 stop
$958United Airlines
Fri, Apr 3 - Fri, Apr 10
American Airlines Logo
1:24 pm - 10:07 am
MSO
-
SJU
17h 43m2 stops
American Airlines Logo
6:00 am - 9:49 pm
SJU
-
MSO
17h 49m2 stops
$983American Airlines
Thu, Feb 26 - Sun, Mar 15
United Airlines Logo
2:38 pm - 8:38 pm
MSO
-
SJU
28h 00m2 stops
United Airlines Logo
2:55 pm - 1:36 pm
SJU
-
MSO
24h 41m2 stops
$1,058United Airlines
Fri, Apr 3 - Fri, Apr 10

United Airlines flights from Missoula to Puerto Rico

Our best United Airlines deals on Missoula to Puerto Rico flight tickets
United Airlines
May 2
MSO6:15 amMissoula Johnson-Bell Field
13h 09m
2 stops
SJU9:24 pmSan Juan Luis Munoz Marin Intl
May 5
SJU1:00 amSan Juan Luis Munoz Marin Intl
14h 32m
2 stops
MSO1:32 pmMissoula Johnson-Bell Field
$681
Find similar
United Airlines
May 2
MSO6:15 amMissoula Johnson-Bell Field
31h 27m
3 stops
SJU3:42 pmSan Juan Luis Munoz Marin Intl
May 5
SJU1:00 amSan Juan Luis Munoz Marin Intl
14h 32m
2 stops
MSO1:32 pmMissoula Johnson-Bell Field
$717
Find similar
United Airlines
May 2
MSO6:15 amMissoula Johnson-Bell Field
9h 23m
1 stop
SJU5:38 pmSan Juan Luis Munoz Marin Intl
May 5
SJU1:00 amSan Juan Luis Munoz Marin Intl
14h 32m
2 stops
MSO1:32 pmMissoula Johnson-Bell Field
$743
Find similar

Alaska Airlines flights from Missoula to Puerto Rico

Our best Alaska Airlines deals on Missoula to Puerto Rico flight tickets
Alaska Airlines
Jan 8
MSO1:03 pmMissoula Johnson-Bell Field
29h 36m
2 stops
SJU9:39 pmSan Juan Luis Munoz Marin Intl
Jan 21
SJU6:00 amSan Juan Luis Munoz Marin Intl
20h 55m
3 stops
MSO11:55 pmMissoula Johnson-Bell Field
$1,589
Find similar
Alaska Airlines
Feb 27
MSO1:39 pmMissoula Johnson-Bell Field
22h 33m
2 stops
SJU3:12 pmSan Juan Luis Munoz Marin Intl
Mar 15
SJU5:30 amSan Juan Luis Munoz Marin Intl
32h 51m
3 stops
MSO12:21 pmMissoula Johnson-Bell Field
$1,597
Find similar
Alaska Airlines
Feb 26
MSO6:23 amMissoula Johnson-Bell Field
19h 37m
3 stops
SJU5:00 amSan Juan Luis Munoz Marin Intl
Mar 15
SJU6:33 amSan Juan Luis Munoz Marin Intl
31h 48m
3 stops
MSO12:21 pmMissoula Johnson-Bell Field
$2,717
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Missoula to Puerto Rico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 1/8

1:21 pm-10:48 am

2 stops18h 27m

San Juan Luis Munoz Marin Intl

Wed 1/21

6:00 am-8:45 pm

2 stops17h 45m

$608

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Sat 5/2

6:15 am-9:24 pm

2 stops13h 09m

San Juan Luis Munoz Marin Intl

Tue 5/5

1:00 am-1:32 pm

2 stops14h 32m

$681

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Sat 5/2

6:15 am-3:42 pm

3 stops31h 27m

San Juan Luis Munoz Marin Intl

Tue 5/5

1:00 am-1:32 pm

2 stops14h 32m

$717

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Sat 5/2

6:15 am-5:38 pm

1 stop9h 23m

San Juan Luis Munoz Marin Intl

Tue 5/5

1:00 am-1:32 pm

2 stops14h 32m

$743

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 1/8

7:00 am-10:26 pm

1 stop12h 26m

San Juan Luis Munoz Marin Intl

Wed 1/21

7:07 am-8:45 pm

1 stop16h 38m

$748

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 2/26

1:24 pm-10:07 am

2 stops17h 43m

San Juan Luis Munoz Marin Intl

Sun 3/15

6:33 am-9:49 pm

1 stop17h 16m

$878

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Sat 5/2

6:15 am-5:38 pm

1 stop9h 23m

San Juan Luis Munoz Marin Intl

Wed 5/6

1:40 pm-9:42 pm

1 stop10h 02m

$905

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Fri 4/3

5:15 pm-8:38 pm

2 stops25h 23m

San Juan Luis Munoz Marin Intl

Fri 4/10

1:40 pm-9:35 pm

1 stop9h 55m

$958

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 2/26

1:24 pm-10:07 am

2 stops17h 43m

San Juan Luis Munoz Marin Intl

Sun 3/15

6:00 am-9:49 pm

2 stops17h 49m

$983

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Fri 4/3

2:38 pm-8:38 pm

2 stops28h 00m

San Juan Luis Munoz Marin Intl

Fri 4/10

2:55 pm-1:36 pm

2 stops24h 41m

$1,058

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Puerto Rico from

How to get the cheapest flight ticket from Missoula to Puerto Rico

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Puerto Rico?

On average, the least expensive day to fly to Puerto Rico from Missoula is on a Saturday. momondo users have found tickets for Saturday departures for as low as $661. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Puerto Rico is Sunday, with ticket prices averaging around $897.

What is the cheapest time of day to depart on your flight to Puerto Rico?

Our most recent data shows that the best time of day to fly to Puerto Rico is at noon. Flights from Missoula to Puerto Rico during this time can be as low as $651. In contrast, the most expensive time of day to depart to Puerto Rico is in the afternoon when prices are around $769.

Can stopping save me money on Missoula to Puerto Rico flights?

You could potentially save up to 39% on your flight if you consider stops on a Missoula to Puerto Rico flight.

Cheap Missoula to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missoula to Puerto Rico

Fastest flight time

12h 00m

Direct flights

None
The fastest flight from Missoula to Puerto Rico takes 12h 00m
There are no direct flights from Missoula to Puerto Rico. There are no popular flight routes from Missoula to Puerto Rico.
Search flight deals

  • When did momondo last update prices for flights from Missoula Johnson-Bell Field Airport to Puerto Rico?

    Prices for flights from Missoula Johnson-Bell Field Airport to Puerto Rico refresh daily.

  • How many operators does momondo search for flights from Missoula Johnson-Bell Field Airport to Puerto Rico?

  • How old do you have to be to fly from Missoula Johnson-Bell Field Airport to Puerto Rico?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Missoula Johnson-Bell Field Airport to Puerto Rico.

  • What documentation or ID do you need to fly to Puerto Rico?

    The necessary travel and health documents for your Puerto Rico trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Missoula to Puerto Rico

Compare and see reviews for airlines that fly from Missoula to Puerto Rico with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $531Free CancellationRating
7.4
9,105 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Missoula to Puerto Rico?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Missoula to Puerto Rico for you.

Can I find flights from Missoula to Puerto Rico with flexible booking policies on momondo?

momondo does allow users to show only those flights to Puerto Rico from Missoula which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Missoula to Puerto Rico?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Puerto Rico from Missoula.

I’m not ready to book a flight from Missoula to Puerto Rico right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Missoula to Puerto Rico flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Puerto Rico trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to Puerto Rico

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