$627 Find Cheap Flights from Missoula to Puerto Rico

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 Puerto Rico departing on 9/16. 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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Book Cheap Missoula to Puerto Rico Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Missoula to Puerto Rico 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 Puerto Rico

Wed, Sep 16 - Sat, Sep 26
American Airlines Logo
1:20 pm - 12:40 pm
MSO
-
SJU
21h 20m
2 stops
American Airlines Logo
2:05 pm - 12:36 pm
SJU
-
MSO
24h 31m
2 stops
$627American Airlines
Tue, Sep 1 - Mon, Sep 7
American Airlines Logo
3:55 pm - 11:09 am
MSO
-
SJU
17h 14m
2 stops
American Airlines Logo
3:00 pm - 11:28 pm
SJU
-
MSO
10h 28m
1 stop
$647American Airlines
Tue, Sep 1 - Mon, Sep 7
American Airlines Logo
12:46 pm - 9:42 am
MSO
-
SJU
18h 56m
2 stops
American Airlines Logo
8:00 am - 11:28 pm
SJU
-
MSO
17h 28m
2 stops
$684American Airlines
Thu, Jun 11 - Wed, Jun 17
American Airlines Logo
2:08 pm - 4:25 am
MSO
-
SJU
12h 17m
1 stop
American Airlines Logo
5:30 am - 1:18 pm
SJU
-
MSO
9h 48m
1 stop
$746American Airlines
Wed, May 20 - Sat, May 30
American Airlines Logo
6:45 am - 11:03 pm
MSO
-
SJU
14h 18m
1 stop
American Airlines Logo
12:44 am - 1:28 pm
SJU
-
MSO
14h 44m
1 stop
$751American Airlines
Thu, Jun 11 - Tue, Jun 16
American Airlines Logo
2:08 pm - 11:03 am
MSO
-
SJU
18h 55m
2 stops
American Airlines Logo
12:44 am - 1:18 pm
SJU
-
MSO
14h 34m
1 stop
$758American Airlines
Wed, Sep 16 - Sat, Sep 26
United Airlines Logo
6:15 am - 8:38 pm
MSO
-
SJU
12h 23m
2 stops
United Airlines Logo
2:00 pm - 9:26 pm
SJU
-
MSO
9h 26m
1 stop
$770United Airlines
Wed, Sep 16 - Fri, Sep 25
United Airlines Logo
6:15 am - 11:50 pm
MSO
-
SJU
15h 35m
3 stops
United Airlines Logo
1:05 am - 1:27 pm
SJU
-
MSO
14h 22m
2 stops
$844United Airlines
Thu, Jun 11 - Wed, Jun 17
American Airlines Logo
2:08 pm - 11:03 am
MSO
-
SJU
18h 55m
2 stops
American Airlines Logo
6:00 am - 10:38 pm
SJU
-
MSO
18h 38m
2 stops
$848American Airlines
Wed, May 20 - Sat, May 30
United Airlines Logo
6:15 am - 9:24 pm
MSO
-
SJU
13h 09m
2 stops
United Airlines Logo
1:00 am - 11:32 am
SJU
-
MSO
12h 32m
2 stops
$909United Airlines
Booking Insights

KAYAK's insights & trends for Missoula to Puerto Rico flights

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

Which airlines provide the cheapest flights from Missoula to Puerto Rico?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Missoula to Puerto Rico were found on American Airlines ($627) and United Airlines ($770).

Find deals

Good to know

Low seasonOctober
Cheapest flight$627
Best time to beat the crowds with an average 61% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Missoula to San Juan

FAQs - booking Puerto Rico flights

  • How does KAYAK find such low prices on flights from Missoula to Puerto Rico?

    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 Puerto Rico.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Missoula to Puerto Rico 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 Puerto Rico?

    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 from Missoula to Puerto Rico with an airline and back with another airline.

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

    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 from Missoula to Puerto Rico 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 Puerto Rico

 
Need help choosing which airline to fly with from Missoula to Puerto Rico? 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 9499 reviews
8.1Crew
7.1Entertainment
6.6Food
7.7Boarding
7.3Comfort
Airline reviews

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

4.0 OkaySasha, Mar 2026
EWR - CLT
Read more United Airlines reviews

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

Awful. No counter attendants. No dinner offered due to delays.

Horrible service no Wi-Fi connection on both leg of the flight and they are refusing to fix bad service

3 hour delay…. Nearly 2 hours sitting on tarmac. Do better, United. Or at least have the sense to not say “we hope you enjoyed your flight with us” upon disembarking.

Flights were on time. Free Wifi on plane. Everything was well organized.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

We had excellent customer service despite the chaos at George Bush airport in Houston!

It isvvery small flight. No leg room . No space to put my personal item at feet.

Everything you need to know for your flight from Missoula to Puerto Rico

Information on your arrival and departure airports

Missoula (MSO)