$638+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SJU
Sep 20 — Sep 271
Round-trip
1 adult, Economy
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Find cheap flights from Billings to San Juan with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Billings to San Juan
Cheapest
Best
Last-minute
Cheapest flights from Billings to San JuanExplore 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 August 21, 2026.
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 August 21, 2026.
This American Airlines deal was found by Cheapflights users on 8/18. 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 9/127:00 am -
2 stops24h 24m
Thu 9/173:41 pm -
2 stops22h 16m
Deal found 8/18![American Airlines logo]()
$638
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/912:31 pm -
2 stops20h 29m
Sat 9/193:41 pm -
2 stops22h 16m
Deal found 8/19![American Airlines logo]()
$643
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/107:00 am -
2 stops11h 47m
Fri 9/183:41 pm -
2 stops22h 16m
Deal found 8/19![American Airlines logo]()
$673
This American Airlines deal was found by Cheapflights users on 8/18. 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 12/21:23 pm -
2 stops18h 21m
Sun 12/66:28 am -
1 stop17h 12m
Deal found 8/18![American Airlines logo]()
$712
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sun 10/255:00 am -
2 stops13h 24m
Thu 10/297:25 am -
2 stops15h 49m
Deal found 8/17![United Airlines logo]()
$728
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Thu 9/102:29 pm -
2 stops21h 16m
Fri 9/183:56 pm -
1 stop21h 06m
Deal found 8/19![United Airlines logo]()
$768
Best flights from Billings to San JuanDiscover 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 August 21, 2026.
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 August 21, 2026.
This American Airlines deal was found by Cheapflights users on 8/16. 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 9/101:13 pm -
2 stops18h 11m
Fri 9/183:41 pm -
2 stops22h 16m
Deal found 8/16![American Airlines logo]()
$707
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sun 10/255:00 am -
2 stops13h 24m
Thu 10/297:25 am -
2 stops15h 49m
Deal found 8/17![United Airlines logo]()
$728
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Thu 9/102:29 pm -
2 stops21h 16m
Fri 9/183:56 pm -
1 stop21h 06m
Deal found 8/19![United Airlines logo]()
$768
This American Airlines deal was found by Cheapflights users on 8/18. 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 12/27:00 am -
1 stop14h 16m
Sun 12/66:28 am -
1 stop17h 12m
Deal found 8/18![American Airlines logo]()
$781
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 9/95:00 am -
2 stops13h 38m
Sat 9/192:00 pm -
1 stop10h 53m
Deal found 8/19![United Airlines logo]()
$812
Last-minute flights from Billings to San JuanDiscover last-minute flight deals from Billings to San Juan. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Billings to San Juan. Data last updated August 21, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/912:31 pm -
2 stops20h 29m
Sat 9/193:41 pm -
2 stops22h 16m
Deal found 8/19![American Airlines logo]()
$643
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 9/95:00 am -
2 stops13h 38m
Sat 9/192:00 pm -
1 stop10h 53m
Deal found 8/19![United Airlines logo]()
$812
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/107:00 am -
2 stops11h 47m
Fri 9/183:41 pm -
2 stops22h 16m
Deal found 8/19![American Airlines logo]()
$673
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Thu 9/102:29 pm -
2 stops21h 16m
Fri 9/183:56 pm -
1 stop21h 06m
Deal found 8/19![United Airlines logo]()
$768
This American Airlines deal was found by Cheapflights users on 8/18. 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 9/127:00 am -
2 stops24h 24m
Thu 9/173:41 pm -
2 stops22h 16m
Deal found 8/18![American Airlines logo]()
$638
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 August 21, 2026.
Round-trip from | $638 (American Airlines) |
|---|
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 7,457,451 searches. Data last updated August 21, 2026.
Use the filters below to find and compare flights from Billings to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BillingsSan Juan
BIL Billings Logan Intl - SJU San Juan Luis Munoz Marin Intl
BILSJU
Billings Logan Intl
Thu 9/10
1:13 pm-9:24 am
2 stops18h 11m
San Juan Luis Munoz Marin Intl
Fri 9/18
3:41 pm-11:57 am
2 stops22h 16m
$707
BillingsSan Juan
BIL Billings Logan Intl - SJU San Juan Luis Munoz Marin Intl
BILSJU
Billings Logan Intl
Sun 10/25
5:00 am-8:24 pm
2 stops13h 24m
San Juan Luis Munoz Marin Intl
Thu 10/29
7:25 am-9:14 pm
2 stops15h 49m
$728
BillingsSan Juan
BIL Billings Logan Intl - SJU San Juan Luis Munoz Marin Intl
BILSJU
Billings Logan Intl
Thu 9/10
2:29 pm-1:45 pm
2 stops21h 16m
San Juan Luis Munoz Marin Intl
Fri 9/18
3:56 pm-11:02 am
1 stop21h 06m
$768
BillingsSan Juan
BIL Billings Logan Intl - SJU San Juan Luis Munoz Marin Intl
BILSJU
Billings Logan Intl
Wed 12/2
7:00 am-12:16 am
1 stop14h 16m
San Juan Luis Munoz Marin Intl
Sun 12/6
6:28 am-8:40 pm
1 stop17h 12m
$781
Quickest round-trip
BillingsSan Juan
BIL Billings Logan Intl - SJU San Juan Luis Munoz Marin Intl
BILSJU
Billings Logan Intl
Wed 9/9
5:00 am-8:38 pm
2 stops13h 38m
San Juan Luis Munoz Marin Intl
Sat 9/19
2:00 pm-10:53 pm
1 stop10h 53m
$812
Sorted by cheapest first
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.
BIL-PR1
BIL-SJU
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
BIL-PR1
BIL-SJU
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 August 21, 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.
Overall
7.4
Crew
8.1
Food
6.7
Comfort
7.3
Boarding
7.7
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Overall
7.4
Crew
8.1
Food
6.7
Comfort
7.3
Boarding
7.7
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
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.
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Alternative routes for Billings to San Juan
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Complete your trip
Complete your trip to San Juan by adding a car rental and/or hotel reservation to your travel itinerary.
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Billings and San Juan flights
Browse other Billings and San Juan flight options. Last updated on August 21, 2026.
Other flights from Billings
Browse through other flights departing from Billings. Flights are based on user searches made on Cheapflights and were last updated on August 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$495 | Average$635 | FlexibilityNo cancel fee | On-time69% |