MSO - SJU

$552 Find Cheap Flights from Missoula to San Juan

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 5/19. 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

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Missoula to San Juan, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Missoula to San Juan, as well as popular online travel agencies
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Flights Deals

Cheap Flight Deals from Missoula to San Juan (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 San Juan 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.

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Missoula to Luis Munoz Marin Intl.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
3:15 pm - 11:31 amMSO-SJU
18h 16m3 stops
 Logo
1:33 am - 9:25 pmSJU-MSO
21h 52m2 stops
Mon, May 19 - Thu, May 22
 Logo
10:05 pm - 12:54 amMSO-SJU
24h 49m2 stops
 Logo
1:33 am - 9:25 pmSJU-MSO
21h 52m2 stops
Mon, May 19 - Thu, May 22
American Airlines Logo
5:12 am - 12:27 amMSO-SJU
17h 15m2 stops
American Airlines Logo
6:15 am - 9:48 pmSJU-MSO
17h 33m1 stop
$620American Airlines
Find Deal
Tue, Jul 22 - Tue, Jul 29
American Airlines Logo
7:03 am - 5:06 amMSO-SJU
20h 03m1 stop
American Airlines Logo
6:15 am - 9:48 pmSJU-MSO
17h 33m1 stop
$660American Airlines
Find Deal
Tue, Jul 22 - Tue, Jul 29
American Airlines Logo
5:12 am - 12:27 amMSO-SJU
17h 15m2 stops
American Airlines Logo
11:59 am - 9:48 pmSJU-MSO
11h 49m2 stops
$663American Airlines
Find Deal
Tue, Jul 22 - Tue, Jul 29
United Airlines Logo
6:20 am - 5:30 pmMSO-SJU
9h 10m1 stop
United Airlines Logo
1:40 pm - 9:21 pmSJU-MSO
9h 41m1 stop
$665United Airlines
Find Deal
Mon, May 19 - Fri, May 23
American Airlines Logo
7:03 am - 5:06 amMSO-SJU
20h 03m1 stop
American Airlines Logo
12:59 am - 12:57 pmSJU-MSO
13h 58m1 stop
$703American Airlines
Find Deal
Tue, Jul 22 - Mon, Jul 28
United Airlines Logo
6:20 am - 5:30 pmMSO-SJU
9h 10m1 stop
United Airlines Logo
1:05 am - 11:50 amSJU-MSO
12h 45m2 stops
$706United Airlines
Find Deal
Mon, May 19 - Thu, May 22
Alaska Airlines Logo
3:17 pm - 2:17 pmMSO-SJU
21h 00m2 stops
Alaska Airlines Logo
2:50 pm - 5:59 pmSJU-MSO
29h 09m3 stops
$1,233Alaska Airlines
Find Deal
Mon, May 19 - Fri, May 23
Alaska Airlines Logo
6:35 am - 5:06 amMSO-SJU
20h 31m3 stops
Alaska Airlines Logo
12:59 am - 3:17 pmSJU-MSO
16h 18m2 stops
$1,249Alaska Airlines
Find Deal
Tue, Jul 22 - Mon, Jul 28
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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.

What is the cheapest month to fly from Missoula to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Missoula to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Missoula to San Juan Luis Munoz Marin Intl Airport is September, where tickets cost $509 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $1,123 and $912 respectively.

Good to know

Low seasonSeptember
High seasonFebruary
Cheapest flight$552
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly and prices are also 9% lower on average.
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 3 days, the lowest price for a flight from Missoula to San Juan Luis Munoz Marin Intl Airport was $552 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?

    oneworld, and Star Alliance are the airline alliances operating flights between Missoula and San Juan, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Missoula to San Juan, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Missoula to San Juan are United Airlines and American Airlines. With an average price for the route of $770 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $894 and an overall rating of 7.2.

  • 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.

Top airlines 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 8702 reviews
7.3Comfort
7.1Entertainment
7.7Boarding
8.1Crew
6.6Food
Airline reviews

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

2.0 MediocreJane, May 2025SFO - LHR
Read more United Airlines reviews

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Was a normal flight but it was delayed, and there wasn't an explanation.

In flight connectivity (via T-Mobile) was often not working.

Pitch was very small. Knees were on the seat back in front of me.

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

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

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