$638 Find Cheap Flights from Billings to Puerto Rico - 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 Billings to Puerto Rico departing on 9/12. 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 Billings 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 Billings 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 Billings to Puerto Rico

Sat, Sep 12 - Thu, Sep 17
American Airlines Logo
7:00 am - 8:47 pm
BIL
-
SJU
11h 47m
2 stops
American Airlines Logo
6:00 am - 10:48 pm
SJU
-
BIL
18h 48m
2 stops
$638American Airlines
Wed, Sep 9 - Thu, Sep 17
American Airlines Logo
1:13 pm - 1:57 pm
BIL
-
SJU
22h 44m
2 stops
American Airlines Logo
6:00 am - 10:48 pm
SJU
-
BIL
18h 48m
2 stops
$643American Airlines
Thu, Sep 10 - Fri, Sep 18
United Airlines Logo
2:29 pm - 2:44 pm
BIL
-
SJU
22h 15m
2 stops
United Airlines Logo
2:55 pm - 10:47 am
SJU
-
BIL
21h 52m
2 stops
$664United Airlines
Thu, Sep 10 - Fri, Sep 18
American Airlines Logo
1:13 pm - 9:24 am
BIL
-
SJU
18h 11m
2 stops
American Airlines Logo
11:51 am - 10:10 pm
SJU
-
BIL
12h 19m
2 stops
$675American Airlines
Wed, Sep 9 - Fri, Sep 18
United Airlines Logo
7:00 am - 11:50 pm
BIL
-
SJU
14h 50m
2 stops
United Airlines Logo
1:00 am - 10:47 am
SJU
-
BIL
11h 47m
2 stops
$676United Airlines
Thu, Sep 10 - Fri, Sep 18
American Airlines Logo
12:28 pm - 9:24 am
BIL
-
SJU
18h 56m
2 stops
American Airlines Logo
10:16 am - 10:10 pm
SJU
-
BIL
13h 54m
2 stops
$682American Airlines
Wed, Sep 9 - Fri, Sep 18
United Airlines Logo
7:00 am - 11:50 pm
BIL
-
SJU
14h 50m
2 stops
United Airlines Logo
1:00 am - 10:47 am
SJU
-
BIL
11h 47m
2 stops
$696United Airlines
Thu, Sep 10 - Fri, Sep 18
United Airlines Logo
2:29 pm - 2:44 pm
BIL
-
SJU
22h 15m
2 stops
United Airlines Logo
3:56 pm - 10:47 am
SJU
-
BIL
20h 51m
1 stop
$720United Airlines
Wed, Sep 9 - Sat, Sep 19
United Airlines Logo
5:00 am - 8:38 pm
BIL
-
SJU
13h 38m
2 stops
United Airlines Logo
1:25 pm - 1:21 pm
SJU
-
BIL
25h 56m
3 stops
$745United Airlines
Tue, Aug 11 - Tue, Aug 18
American Airlines Logo
1:13 pm - 9:43 am
BIL
-
SJU
18h 30m
2 stops
American Airlines Logo
3:44 pm - 10:47 pm
SJU
-
BIL
9h 03m
1 stop
$747American Airlines
Booking Insights

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

Get data-powered insights and trends into flights from Billings 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 Billings to Puerto Rico?

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 Billings to Puerto Rico were found on American Airlines ($638) and United Airlines ($664).

Good to know

Cheapest flight

$638
Flight from Billings to San Juan

FAQs - booking Puerto Rico flights

  • How does KAYAK find such low prices on flights from Billings 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 Billings to Puerto Rico.

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

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

 
Need help choosing which airline to fly with from Billings 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 10011 reviews
8.1Crew
6.7Food
7.1Entertainment
7.3Comfort
7.7Boarding
Airline reviews

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

4.0 OkayHope, Jul 2026
IAD - IND
Read more United Airlines reviews

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

Baggage claim signs were not updated with my flight information, so I had to guess. The app wasn't updated either.

I almost missed my connection in Chicago due to having to wait on a gate to be open I am assuming. Having to run from E terminal to C terminal and I barely made it there before they closed the door. This may not be the actual airline's fault it's crazy how there is so little time between flight especially when they are placed so far apart in the airport.

Unbelievably smooth boarding at IAH and the flight attendants were top notch.

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 Billings to Puerto Rico

Information on your arrival and departure airports