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$203+ Cheap flights from Boise (BOI) 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJU
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
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The best prices from Boise Air Term. Gowen Fld to San Juan are usually found in October or January, booked 56 days in advance, depart on a Monday or Thursday and return on a Monday

Cheap flight deals from Boise to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) 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 febrero 20, 2025.

Round-trip from

$297
(Booking.com)

One-way from

$203
(American Airlines)

Popular in

March

Cheapest in

October

Average price

$674
From Boise Air Term. Gowen Fld to San Juan
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One-way flight from Boise Air Term. Gowen Fld to San Juan
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Highest demand for flights based on searches. 8% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Boise to San Juan

Cheapest flights from Boise to San Juan
Explore the most affordable flight options available from Boise to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 20, 2025.

This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/21:31 pmBOI - SJU
2 stops25h 03mSpirit Airlines
dom. 4/68:16 pmSJU - BOI
2 stops18h 20mSpirit Airlines
Deal found 2/20$297
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/2411:30 pmBOI - SJU
1 stop11h 53mDelta
vie. 10/312:28 pmSJU - BOI
1 stop10h 05mDelta
Deal found 2/19$405
This Travelocity deal was found by Cheapflights users on 2/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/21:36 pmBOI - SJU
1 stop13h 24mMultiple Airlines
dom. 4/68:16 pmSJU - BOI
2 stops18h 20mMultiple Airlines
Deal found 2/20$409
This American Airlines deal was found by Cheapflights users on 2/20. 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.
sáb. 11/81:32 pmBOI - SJU
1 stop12h 33mAmerican Airlines
sáb. 11/158:14 amSJU - BOI
1 stop16h 04mAmerican Airlines
Deal found 2/20$483
This United Airlines deal was found by Cheapflights users on 2/20. 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.
sáb. 11/87:00 amBOI - SJU
1 stop8h 19mUnited Airlines
vie. 11/142:05 amSJU - BOI
2 stops14h 25mUnited Airlines
Deal found 2/20$493
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/117:05 pmBOI - SJU
2 stops13h 20mSouthwest
mié. 6/251:25 pmSJU - BOI
2 stops13h 00mSouthwest
Deal found 2/20$598
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/191:36 pmBOI - SJU
1 stop13h 24mAlaska Airlines
mié. 3/266:05 amSJU - BOI
1 stop17h 50mAlaska Airlines
Deal found 2/20$721

Find flights from Boise to San Juan within your budget

Customize your flight search to find flights from Boise 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 febrero 20, 2025.

Fly from

Boise

Fly to

San Juan

Route

Depart

Return

Price

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

mié. 4/2

1:31 pm-4:34 pm

2 stops25h 03m

San Juan Luis Munoz Marin Intl

dom. 4/6

8:16 pm-12:36 pm

2 stops18h 20m

$297

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

mié. 4/2

1:36 pm-5:00 am

1 stop13h 24m

San Juan Luis Munoz Marin Intl

dom. 4/6

8:16 pm-12:36 pm

2 stops18h 20m

$409

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

dom. 3/23

11:30 pm-11:44 am

1 stop10h 14m

San Juan Luis Munoz Marin Intl

sáb. 3/29

7:45 am-10:56 pm

2 stops17h 11m

$429

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

lun. 4/7

5:18 pm-10:59 am

2 stops15h 41m

San Juan Luis Munoz Marin Intl

lun. 5/5

6:20 am-9:59 pm

1 stop17h 39m

$528

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

sáb. 3/8

5:00 am-6:25 pm

1 stop10h 25m

San Juan Luis Munoz Marin Intl

mié. 3/12

1:25 pm-11:15 pm

1 stop11h 50m

$585

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

mié. 6/11

7:05 pm-10:25 am

2 stops13h 20m

San Juan Luis Munoz Marin Intl

mié. 6/25

1:25 pm-12:25 am

2 stops13h 00m

$598

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

mié. 3/19

1:36 pm-5:00 am

1 stop13h 24m

San Juan Luis Munoz Marin Intl

mié. 3/26

6:05 am-9:55 pm

1 stop17h 50m

$721

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

mar. 4/8

5:18 pm-10:50 am

2 stops15h 32m

$203

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

mar. 4/8

5:00 pm-1:45 pm

3 stops18h 45m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Best time to book a flight from Boise to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Boise 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.

Travel insights for flights from Boise to San Juan

Get recent, data-driven insights about flights from Boise to San Juan including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Boise to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Boise to San Juan. Price data was last updated on February 14, 2025.

The best time to book flights from Boise to San Juan is 56 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Boise to San Juan?

Currently, September is the cheapest month in which you can book a flight from Boise to San Juan (average of $254). Flying from Boise to San Juan in March is currently the most expensive (average of $363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOI to SJU?

Find hourly flight availability from Boise to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 20, 2025.

When flying from Boise to San Juan, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 29% versus a flight in the morning.

What is the cheapest day to fly from Boise to San Juan?

Use this chart to determine the cheapest time to fly round-trip from Boise to San Juan. Price data was last updated on February 18, 2024.

Travelers seeking maximum savings on their Boise to San Juan flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 febrero 20, 2025.
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Boise 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 Boise to San Juan?

    For a flight from Boise to San Juan, you will be flying from Air Term. Gowen Fld. Boise Air Term. Gowen Fld (BOI) is just 3.3 mi from the center of the city. Air Term. Gowen Fld is the only Boise airport and it handles 0 outbound flights to San Juan per day. 5 airlines have flights to San Juan from Boise Air Term. Gowen Fld on a regular basis.

  • What are the cheapest airlines flying from Boise to San Juan round-trip?

    Spirit Airlines, at $297, was found to be the cheapest airline from Boise to San Juan.Alternate airlines to your destination round-trip include Delta and American Airlines. Spirit Airlines is priced at 53% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise 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.

  • What is the cheapest month to book a flight from Boise to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Boise to San Juan (average of $254). Flying from Boise to San Juan in March is currently the most expensive (average of $363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Boise to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Luis Munoz Marin Intl flights
Spokane to Luis Munoz Marin Intl flights
Boise to Vieques flights

Top 5 airlines flying from Boise to San Juan

Discover the top 5 airlines that operate flights from Boise 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$253Average$424FlexibilityNo cancel feeOn-time65%
DeltaCheapest$287Average$529FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$452Average$674FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$463Average$659FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$464Average$761FlexibilityNo cancel feeOn-time69%
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