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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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SJU
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from Billings to San Juan

Cheapest flights from Billings to San Juan
Explore the most affordable flight options available from Billings to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This American Airlines deal was found by Cheapflights users on 11/13. 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 12/61:58 pmBIL - SJU
2 stops19h 01mAmerican Airlines
Mon 12/156:42 pmSJU - BIL
2 stops21h 46mAmerican Airlines
Deal found 11/13$531
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:24 pmBIL - SJU
3 stops22h 52mMultiple Airlines
Sun 12/141:27 pmSJU - BIL
2 stops22h 45mMultiple Airlines
Deal found 11/12$605
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/87:00 amBIL - SJU
1 stop8h 25mUnited Airlines
Thu 12/112:25 pmSJU - BIL
1 stop9h 56mUnited Airlines
Deal found 11/11$621
This American Airlines deal was found by Cheapflights users on 11/12. 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.
Mon 12/81:58 pmBIL - SJU
2 stops17h 11mAmerican Airlines
Thu 12/1112:49 pmSJU - BIL
2 stops11h 26mAmerican Airlines
Deal found 11/12$641
This American Airlines deal was found by Cheapflights users on 11/13. 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.
Thu 12/41:58 pmBIL - SJU
2 stops20h 32mAmerican Airlines
Mon 12/87:00 amSJU - BIL
1 stop17h 18mAmerican Airlines
Deal found 11/13$692

Cheap 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 November 13, 2025.

Round-trip from

$531
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$585
From Billings Logan Intl to San Juan
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 13, 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

$570

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Thu 12/11

10:24 pm-12:16 am

3 stops22h 52m

San Juan Luis Munoz Marin Intl

Sun 12/14

1:27 pm-9:12 am

2 stops22h 45m

$605

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Fri 2/6

2:15 pm-10:48 am

2 stops17h 33m

San Juan Luis Munoz Marin Intl

Mon 2/9

7:07 am-1:36 pm

1 stop9h 29m

$609

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Tue 3/31

7:52 am-3:55 am

1 stop18h 03m

San Juan Luis Munoz Marin Intl

Tue 4/7

3:50 pm-11:55 am

2 stops22h 05m

$618

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Mon 12/8

7:00 am-6:25 pm

1 stop8h 25m

San Juan Luis Munoz Marin Intl

Thu 12/11

8:30 am-9:21 pm

2 stops15h 51m

$621

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

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 November 13, 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
9,015 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,015 reviews
United Airlines
7.4
Good
9,015 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 30% 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
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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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$495Average$784FlexibilityNo cancel feeOn-time69%

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