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San Juan

$531+ Cheap flights from Billings (BIL) to San Juan

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SJU
Jan 24 — Jan 311
Sat 1/24
Sat 1/31
1 adult, Economy
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Cheap flight deals from Billings to San Juan

Best flights from Billings to San Juan
Discover carefully curated flight deals from Billings to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 25, 2025.

This American Airlines deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/72:15 pmBIL - SJU
2 stops19h 12mAmerican Airlines
Sat 2/147:30 amSJU - BIL
1 stop17h 05mAmerican Airlines
Deal found 12/24$531
This United Airlines deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:05 amBIL - SJU
2 stops13h 29mUnited Airlines
Sat 5/91:00 amSJU - BIL
2 stops14h 13mUnited Airlines
Deal found 12/24$603
This American Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/282:03 pmBIL - SJU
1 stop11h 57mAmerican Airlines
Sun 5/1011:59 pmSJU - BIL
1 stop13h 56mAmerican Airlines
Deal found 12/22$570
This United Airlines deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/266:30 amBIL - SJU
2 stops15h 06mUnited Airlines
Wed 1/282:25 pmSJU - BIL
1 stop9h 58mUnited Airlines
Deal found 12/24$621
This American Airlines deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/181:51 pmBIL - SJU
2 stops17h 09mAmerican Airlines
Tue 3/246:33 amSJU - BIL
1 stop17h 17mAmerican Airlines
Deal found 12/24$570
This American Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/281:51 pmBIL - SJU
2 stops17h 09mAmerican Airlines
Thu 4/21:30 amSJU - BIL
1 stop13h 51mAmerican Airlines
Deal found 12/23$609

Find flight deals from Billings to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 25, 2025.

Round-trip from

$531
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$915
From Billings Logan Intl to San Juan
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High demand for flights, 4% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings to San Juan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 25, 2025.
Use the filters below to find and compare flights from Billings to San Juan that are best for you.

Fly from

Billings

Fly to

San Juan

Route

Depart

Return

Price

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Sat 2/7

2:15 pm-12:27 pm

2 stops19h 12m

San Juan Luis Munoz Marin Intl

Sat 2/14

7:30 am-9:35 pm

1 stop17h 05m

$531

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Tue 4/28

2:03 pm-4:00 am

1 stop11h 57m

San Juan Luis Munoz Marin Intl

Sun 5/10

11:59 pm-11:55 am

1 stop13h 56m

$570

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Wed 3/18

1:51 pm-9:00 am

2 stops17h 09m

San Juan Luis Munoz Marin Intl

Tue 3/24

6:33 am-9:50 pm

1 stop17h 17m

$570

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Tue 4/28

5:05 am-8:34 pm

2 stops13h 29m

San Juan Luis Munoz Marin Intl

Sat 5/9

1:00 am-1:13 pm

2 stops14h 13m

$603

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Sat 3/28

1:51 pm-9:00 am

2 stops17h 09m

San Juan Luis Munoz Marin Intl

Thu 4/2

1:30 am-1:21 pm

1 stop13h 51m

$609

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Mon 1/26

6:30 am-12:36 am

2 stops15h 06m

San Juan Luis Munoz Marin Intl

Wed 1/28

2:25 pm-9:23 pm

1 stop9h 58m

$621

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

Best time to book a flight from Billings to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Billings with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Billings to San Juan
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated December 25, 2025.
See what other customers who have flown with United Airlines from Billings to San Juan have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,115 reviews

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,115 reviews
United Airlines
7.4
Good
9,115 reviews

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

Find useful and relevant information for your journey from Billings to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Billings to San Juan?

    Billings Logan Intl (BIL), located 2.7 mi from the city center, is the airport you fly out of when you book flights from Billings to San Juan. 1 airline have flights from Billings Logan Intl to San Juan on a regular basis. Booking flights from Billings Logan Intl to San Juan should not be difficult; the airport handles an average of 0 outbound flights to San Juan per day.

  • How long is the flight from Billings to San Juan?

    Departing from Billings to San Juan will take you 19h 12m. Billings and San Juan are separated by a distance of 3068 mi.

  • What is the cheapest airline to fly from Billings to San Juan round-trip?

    Our cheapest airline available from Billings to San Juan is United Airlines. Our recent data shows that you can find tickets from as low as $495 on this airline. This flight start at 29% lower than the current average price 3 months from now.

  • Can I find deals for flights from Billings to San Juan that include hotel bookings?

    Yes. In addition to deals on Billings to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Billings to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Billings to San Juan.

  • Can I find deals for business class flights from Billings to San Juan?

    Yes. Cheapflights offers flight deals from Billings to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Billings to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Bozeman to Luis Munoz Marin Intl flights
Billings to Luis Munoz Marin Intl flights
Missoula to Luis Munoz Marin Intl flights
Kalispell to Luis Munoz Marin Intl flights

Top airline flying from Billings to San Juan

Discover the top airline that operate flights from Billings to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$495Average$655FlexibilityNo cancel feeOn-time69%

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