$398 Find Cheap Flights from Missoula to Puerto Rico

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Missoula to Puerto Rico departing on 12/25. 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

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Flight Deals

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

Mon, Dec 8 - Thu, Dec 11
Delta Logo
6:16 pm - 12:44 pmMSO-SJU
15h 28m2 stops
Delta Logo
3:20 pm - 12:35 amSJU-MSO
12h 15m2 stops
$531Delta
Find Deal
Mon, Dec 8 - Thu, Dec 11
Delta Logo
6:16 pm - 12:44 pmMSO-SJU
15h 28m2 stops
Delta Logo
7:00 am - 12:35 amSJU-MSO
20h 35m2 stops
$560Delta
Find Deal
Thu, Jan 8 - Wed, Jan 21
American Airlines Logo
7:00 am - 10:14 pmMSO-SJU
12h 14m1 stop
American Airlines Logo
6:45 am - 9:41 pmSJU-MSO
17h 56m1 stop
$570American Airlines
Find Deal
Thu, Jan 8 - Wed, Jan 21
American Airlines Logo
7:00 am - 10:14 pmMSO-SJU
12h 14m1 stop
American Airlines Logo
6:45 am - 9:41 pmSJU-MSO
17h 56m1 stop
$598American Airlines
Find Deal
Mon, Dec 8 - Thu, Dec 11
American Airlines Logo
7:00 am - 11:59 amMSO-SJU
25h 59m2 stops
American Airlines Logo
7:00 am - 8:33 pmSJU-MSO
16h 33m1 stop
$641American Airlines
Find Deal
Mon, Dec 8 - Thu, Dec 11
United Airlines Logo
6:15 am - 6:25 pmMSO-SJU
9h 10m1 stop
United Airlines Logo
2:25 pm - 9:18 pmSJU-MSO
9h 53m1 stop
$688United Airlines
Find Deal
Thu, Jan 8 - Tue, Jan 20
United Airlines Logo
6:00 am - 6:25 pmMSO-SJU
9h 25m1 stop
United Airlines Logo
2:05 am - 1:35 pmSJU-MSO
14h 30m2 stops
$725United Airlines
Find Deal
Thu, Jan 8 - Tue, Jan 20
United Airlines Logo
6:00 am - 9:00 pmMSO-SJU
12h 00m2 stops
United Airlines Logo
2:05 am - 9:51 pmSJU-MSO
22h 46m3 stops
$765United Airlines
Find Deal
Thu, Jan 8 - Wed, Jan 21
Alaska Airlines Logo
6:30 pm - 10:14 pmMSO-SJU
24h 44m3 stops
Alaska Airlines Logo
7:20 am - 11:57 pmSJU-MSO
19h 37m2 stops
$987Alaska Airlines
Find Deal
Thu, Feb 19 - Sun, Mar 1
Alaska Airlines Logo
6:35 am - 4:55 amMSO-SJU
19h 20m3 stops
Alaska Airlines Logo
7:20 am - 11:59 pmSJU-MSO
19h 39m2 stops
$1,622Alaska Airlines
Find Deal
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 Delta ($531) and American Airlines ($570).

Good to know

Low seasonOctober
Cheapest flight$398
Best time to beat the crowds with an average 60% drop in price.
Most popular time to fly and prices are also 3% lower on average.
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.

  • What is the cheapest time of day to fly to Puerto Rico?

    The cheapest time of day to fly to Puerto Rico is generally in the afternoon, when round-trip flights cost $651 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. The most expensive time of day to fly to Puerto Rico is generally in the evening, which is peak travel time and where the average cost of a ticket is $769.

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 8929 reviews
7.3Comfort
6.6Food
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

2.0 MediocreAnonymous, Sep 2025SFO - MEX
Read more United Airlines reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

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

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