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San Juan

$308+ Cheap flights from Billings (BIL) to San Juan

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SJU
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheap 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 February 12, 2026.

This United Airlines deal was found by Cheapflights users on 2/8. 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.
Sat 5/25:05 am
BIL
-
SJU
2 stops13h 33m
United Airlines
Mon 5/111:00 am
SJU
-
BIL
2 stops14h 23m
United Airlines
Deal found 2/8$534
This American Airlines deal was found by Cheapflights users on 2/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
BIL
-
SJU
1 stop15h 02m
American Airlines
Sat 5/95:45 am
SJU
-
BIL
2 stops18h 58m
American Airlines
Deal found 2/11$562
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 5/86:35 am
BIL
-
SJU
1 stop9h 03m
United Airlines
Fri 5/151:00 am
SJU
-
BIL
2 stops14h 23m
United Airlines
Deal found 2/10$600
This American Airlines deal was found by Cheapflights users on 2/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BIL
-
SJU
1 stop15h 02m
American Airlines
Sun 5/106:45 am
SJU
-
BIL
1 stop17h 58m
American Airlines
Deal found 2/11$629
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Fri 5/156:35 am
BIL
-
SJU
1 stop9h 03m
United Airlines
Sat 5/237:20 am
SJU
-
BIL
2 stops15h 49m
United Airlines
Deal found 2/9$638
This American Airlines deal was found by Cheapflights users on 2/9. 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 4/81:51 pm
BIL
-
SJU
1 stop12h 41m
American Airlines
Tue 4/146:45 am
SJU
-
BIL
1 stop17h 58m
American Airlines
Deal found 2/9$671

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 February 12, 2026.

Round-trip from

$534
(United Airlines)

One-way from

$308
(American Airlines)
From Billings Logan Intl to San Juan
Search Deals
One-way flight from Billings Logan Intl to San Juan
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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 February 12, 2026.
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 5/2

5:05 am-8:38 pm

2 stops13h 33m

San Juan Luis Munoz Marin Intl

Mon 5/11

1:00 am-1:23 pm

2 stops14h 23m

$534

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Wed 4/29

6:00 am-11:02 pm

1 stop15h 02m

San Juan Luis Munoz Marin Intl

Sat 5/9

5:45 am-10:43 pm

2 stops18h 58m

$562

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Fri 5/8

6:35 am-5:38 pm

1 stop9h 03m

San Juan Luis Munoz Marin Intl

Fri 5/15

1:00 am-1:23 pm

2 stops14h 23m

$600

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Tue 4/28

6:00 am-11:02 pm

1 stop15h 02m

San Juan Luis Munoz Marin Intl

Sun 5/10

6:45 am-10:43 pm

1 stop17h 58m

$629

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Fri 5/15

6:35 am-5:38 pm

1 stop9h 03m

San Juan Luis Munoz Marin Intl

Sat 5/23

7:20 am-9:09 pm

2 stops15h 49m

$638

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Sat 5/16

1:51 pm-4:32 am

1 stop12h 41m

$308

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Fri 5/15

10:34 am-9:54 am

3 stops21h 20m

$319

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Fri 5/15

6:35 am-5:38 pm

1 stop9h 03m

$319

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Sat 5/16

6:35 am-11:50 pm

2 stops15h 15m

$353

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Sat 5/16

7:21 pm-4:32 am

3 stops31h 11m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

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 February 12, 2026.
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
9,276 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,276 reviews
United Airlines
7.4
Good
9,276 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 13h 33m. Billings and San Juan are separated by a distance of 3068 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

  • 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
Missoula to Luis Munoz Marin Intl flights
Billings 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 February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$495Average$655FlexibilityNo cancel feeOn-time69%

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