$511 Find Cheap Flights from Billings 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 Billings to Puerto Rico departing on 9/30. 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 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

Tue, Sep 30 - Thu, Oct 9
American Airlines Logo
12:19 pm - 12:47 pmBIL-SJU
22h 28m2 stops
American Airlines Logo
7:00 pm - 1:23 pmSJU-BIL
20h 23m2 stops
$511American Airlines
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Sat, Oct 4 - Tue, Oct 7
United Airlines Logo
7:00 am - 11:57 pmBIL-SJU
14h 57m2 stops
United Airlines Logo
1:05 am - 1:18 pmSJU-BIL
14h 13m2 stops
$593United Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
American Airlines Logo
1:59 pm - 2:53 pmBIL-SJU
22h 54m2 stops
American Airlines Logo
6:10 am - 9:49 pmSJU-BIL
17h 39m2 stops
$598American Airlines
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Sat, Sep 6 - Fri, Sep 12
United Airlines Logo
5:00 am - 5:30 pmBIL-SJU
10h 30m1 stop
United Airlines Logo
1:05 am - 1:17 pmSJU-BIL
14h 12m2 stops
$601United Airlines
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Sat, Dec 6 - Mon, Dec 15
American Airlines Logo
2:04 pm - 12:05 pmBIL-SJU
19h 01m2 stops
American Airlines Logo
6:20 pm - 11:55 amSJU-BIL
20h 35m2 stops
$608American Airlines
Find Deal
Sat, Oct 4 - Wed, Oct 8
American Airlines Logo
1:59 pm - 2:53 pmBIL-SJU
22h 54m2 stops
American Airlines Logo
4:45 pm - 11:50 amSJU-BIL
21h 05m2 stops
$621American Airlines
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Sat, Feb 7 - Sat, Feb 14
American Airlines Logo
2:03 pm - 12:00 pmBIL-SJU
18h 57m2 stops
American Airlines Logo
5:41 am - 8:57 pmSJU-BIL
18h 16m2 stops
$643American Airlines
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Tue, Oct 7 - Sat, Oct 11
Delta Logo
6:25 am - 9:59 pmBIL-SJU
13h 34m2 stops
Delta Logo
7:15 am - 7:42 pmSJU-BIL
14h 27m2 stops
$2,235Delta
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Sat, Dec 6 - Mon, Dec 15
Alaska Airlines Logo
3:35 pm - 2:53 pmBIL-SJU
20h 18m2 stops
Alaska Airlines Logo
8:09 am - 12:51 pmSJU-BIL
31h 42m3 stops
$2,668Alaska Airlines
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Sat, Dec 6 - Mon, Dec 15
Alaska Airlines Logo
2:02 pm - 2:40 pmBIL-SJU
21h 38m2 stops
Alaska Airlines Logo
8:09 am - 1:22 pmSJU-BIL
32h 13m3 stops
$2,681Alaska Airlines
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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.

What’s the cheapest day of the week to fly from Billings to Puerto Rico?

The average price of all round-trip flights from Billings to Puerto Rico clicked on KAYAK for each day over the last 12 months.

For Billings to Puerto Rico, Monday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Puerto Rico back to Billings, the best deals are generally found on Sunday, with Friday being the most expensive.

Find deals

Good to know

Low seasonSeptember
Cheapest flight$511
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 23% increase in price.
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.

  • 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 $735 on average. The most expensive time of day to fly to Puerto Rico is generally in the morning, which is peak travel time and where the average cost of a ticket is $811.

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 8925 reviews
8.1Crew
7.7Boarding
7.3Comfort
7.1Entertainment
6.6Food
Airline reviews

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

10.0 ExcellentAnonymous, Aug 2025TPA - IAD
Read more United Airlines reviews

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

The flight was comfortable with the exit row and great service

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

The service was good, the food could have been better.

Staff was rude. Didn’t give water for 2 hours. Worst service

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

Information on your arrival and departure airports

Billings (BIL)

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