MSO - SJU

$642 Find Cheap Flights from Missoula to San Juan - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Missoula to Luis Munoz Marin Intl departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$642
American Airlines
Thu 12/10Sun 12/13
MSO - SJU • 2 stops
Top airlines
Cheapest • from $642 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Missoula and Luis Munoz Marin Intl. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $831 (round-trip)
Shortest trip • 9h 20m (one-way)
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Booking Insights
Flight Deals

Cheap Flights from Missoula to Luis Munoz Marin Intl (MSO-SJU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Missoula to Luis Munoz Marin Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Missoula to Luis Munoz Marin Intl

Thu, Dec 10 - Sun, Dec 13
American Airlines Logo
1:45 pm - 10:35 am
MSO
-
SJU
17h 50m
2 stops
American Airlines Logo
6:42 pm - 12:35 pm
SJU
-
MSO
20h 53m
2 stops
$642American Airlines
Thu, Dec 10 - Sun, Dec 13
American Airlines Logo
1:45 pm - 10:35 am
MSO
-
SJU
17h 50m
2 stops
American Airlines Logo
6:42 pm - 12:35 pm
SJU
-
MSO
20h 53m
2 stops
$679American Airlines
Wed, Dec 30 - Fri, Jan 8
Delta Logo
5:40 am - 11:20 pm
MSO
-
SJU
14h 40m
2 stops
Delta Logo
7:30 am - 12:31 am
SJU
-
MSO
20h 01m
2 stops
$686Delta
Thu, Dec 10 - Sun, Dec 13
American Airlines Logo
1:45 pm - 10:35 am
MSO
-
SJU
17h 50m
2 stops
American Airlines Logo
7:00 am - 8:33 pm
SJU
-
MSO
16h 33m
1 stop
$724American Airlines
Thu, Dec 10 - Sun, Dec 13
American Airlines Logo
7:00 am - 5:19 am
MSO
-
SJU
19h 19m
1 stop
American Airlines Logo
7:00 am - 8:33 pm
SJU
-
MSO
16h 33m
1 stop
$806American Airlines
Wed, Dec 30 - Sat, Jan 9
American Airlines Logo
1:45 pm - 1:41 pm
MSO
-
SJU
20h 56m
2 stops
American Airlines Logo
7:12 pm - 12:35 pm
SJU
-
MSO
20h 23m
2 stops
$866American Airlines
Tue, Dec 29 - Sat, Jan 9
American Airlines Logo
1:45 pm - 10:37 am
MSO
-
SJU
17h 52m
2 stops
American Airlines Logo
7:12 pm - 12:35 pm
SJU
-
MSO
20h 23m
2 stops
$881American Airlines
Wed, Dec 30 - Fri, Jan 8
Delta Logo
5:40 am - 11:20 pm
MSO
-
SJU
14h 40m
2 stops
Delta Logo
7:30 am - 12:31 am
SJU
-
MSO
20h 01m
2 stops
$911Delta
Thu, Jul 30 - Fri, Aug 7
American Airlines Logo
4:44 pm - 11:04 am
MSO
-
SJU
16h 20m
2 stops
American Airlines Logo
12:55 am - 5:20 pm
SJU
-
MSO
18h 25m
2 stops
$944American Airlines
Wed, Dec 30 - Sat, Jan 9
American Airlines Logo
1:45 pm - 5:04 am
MSO
-
SJU
12h 19m
1 stop
American Airlines Logo
7:12 pm - 12:35 pm
SJU
-
MSO
20h 23m
2 stops
$1,006American Airlines
Booking Insights

KAYAK's insights & trends for Missoula to Luis Munoz Marin Intl flights

Get data-powered insights and trends into flights from Missoula to Luis Munoz Marin Intl to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Missoula to San Juan?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Missoula to San Juan were found on American Airlines ($642) and Delta ($686).

Good to know

Cheapest flight$642
Flight from Missoula to San Juan

When to book flights from Missoula to Luis Munoz Marin Intl

Are your dates flexible? Find out the best times to travel from Missoula to Luis Munoz Marin Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Missoula to San Juan flights

  • What is the cheapest flight from Missoula to San Juan Luis Munoz Marin Intl Airport?

    In the last 5 days, the lowest price for a flight from Missoula to San Juan Luis Munoz Marin Intl Airport was $642 for a round-trip ticket.

  • Do I need a passport to fly between Missoula and San Juan?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Missoula and on arrival in San Juan.

  • Which airports will I be using when flying from Missoula to San Juan?

    When flying out of Missoula you will be using Missoula Johnson-Bell Field. You will be landing at San Juan, also known as San Juan Luis Munoz Marin Intl.

  • Which aircraft models fly most regularly from Missoula to San Juan?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Missoula to San Juan?

    Star Alliance is the only airline alliance operating flights between Missoula and San Juan.

  • How does KAYAK find such low prices on flights from Missoula to San Juan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missoula to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missoula to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Missoula is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Missoula to San Juan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan with an airline and back to Missoula with another airline. Booking your flights between Missoula and SJU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missoula to San Juan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan from Missoula up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Missoula to Luis Munoz Marin Intl

 
See real verified KAYAK customer reviews for airlines flying from Missoula to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Missoula to Luis Munoz Marin Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9927 reviews
7.1Entertainment
8.1Crew
7.3Comfort
7.7Boarding
6.7Food
Airline reviews

The flight was delayed by a hour and I wish they had communicated it sooner. No issues on the plane, it did take a while for food to come.

6.0 GoodMatthew, Jul 2026
ORD - SEA
Read more United Airlines reviews

The flight was delayed by a hour and I wish they had communicated it sooner. No issues on the plane, it did take a while for food to come.

Know that the movies that you are going to be offered are the oldest be rated movies they could possibly get. They may have one or two new movies that they keep advertising but when you’re flying 15 hours, there is nothing to see past the first new movie.

Staff could’ve been a little more cordial. The men were much more friendlier than the women. My daughter and I also missed the 2nd to last meal as we were sleeping but that is on us.

Great staff. Clean plane, but we were delayed for more than an hour due to maintenance issues and had to board another plane.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

My flight was completely full. Making me very stressful with people walking around all the time. I believe airlines can do better for entertain people during the flight.

The United website was easy to use and had all the information I needed. I needed to change my flight and it was accomplished easily on line. I was also easily able to upgrade and for a reasonable price. Boarding went smoothly and the flight was in time. The service was good in board but the crew did not seem happy at all. Limited availability of meals - not much choice for purchase and in business class they ran out of one of the meal choices by row 4. .

The amount of seating is ridiculously small. Three points to consider Point One: Your in flight magazine needs to be smaller. Do you realize I can't even hold it in a reading position because of the limited space in front of me? It's a hangover from the past and if you want anyone to read it, it must be smaller. Point two: It is very uncomfortable for a lady to be sitting next to a strange man and constantly rubbing upper arms even when both of our elbows are within the arm rests. And larger men (whom I pity in this confined predicament) also tend to spread their legs into my leg space which requires me to hold my legs into a smaller position. Point three: The seats seem to position one's body in an unusually upright manner and the head rests push the head farther forward. I gave a small effort to see if the headrest could be removed but didn't want to break it or cause a scene with my efforts. I finally put my jacket behind my back to place my body more forward to match the head rest. The service was fine and I noticed ALL staff worked at smiling and greeting passengers. That was nice. No one likes to fly anymore as it is an endurance rather than a pleasure.

Everything you need to know for your flight from Missoula to Luis Munoz Marin Intl

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