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Caribbean Islands

$216+ Cheap flights from Idaho to Caribbean Islands

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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJU
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Idaho to Caribbean Islands

Keep the following information in mind while searching for Idaho to Caribbean Islands flight deals. Data was last updated September 16, 2025.

Round-trip from

$395
(Delta)

One-way from

$216
(Delta)

Popular in

March

Cheapest in

September

Average price

$495
From Idaho to Caribbean Islands
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One-way flight from Idaho to Caribbean Islands
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Highest demand for flights based on searches. 3% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Idaho to Caribbean Islands

Cheapest flights from Idaho to Caribbean Islands
Explore the most affordable flight options available from Idaho to Caribbean Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:15 amBOI - SJU
1 stop9h 10mUnited Airlines
Wed 10/291:05 amSJU - BOI
2 stops14h 39mUnited Airlines
Deal found 9/16$395
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/296:40 amBOI - SJU
2 stops13h 30mAmerican Airlines
Tue 11/47:15 amSJU - BOI
1 stop18h 17mAmerican Airlines
Deal found 9/14$431
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 10/134:50 pmGEG - SJU
2 stops16h 06mDelta
Thu 10/307:00 amSJU - GEG
2 stops18h 48mDelta
Deal found 9/15$431
This Southwest deal was found by Cheapflights users on 9/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:00 amBOI - SJU
2 stops15h 15mSouthwest
Thu 12/411:20 amSJU - BOI
2 stops14h 50mSouthwest
Deal found 9/16$478
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/96:15 amBOI - SJU
1 stop9h 10mUnited Airlines
Fri 11/142:05 amSJU - BOI
2 stops14h 39mUnited Airlines
Deal found 9/15$485
This American Airlines deal was found by Cheapflights users on 9/15. 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 11/152:16 pmBOI - NAS
2 stops17h 27mAmerican Airlines
Fri 11/218:00 amNAS - BOI
2 stops16h 07mAmerican Airlines
Deal found 9/15$493
This Delta deal was found by Cheapflights users on 9/15. 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.
Wed 11/121:15 pmGEG - NAS
2 stops19h 39mDelta
Tue 11/184:51 pmNAS - GEG
2 stops18h 42mDelta
Deal found 9/15$493
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/66:20 amBOI - NAS
1 stop7h 54mUnited Airlines
Sat 12/132:55 pmNAS - BOI
1 stop8h 21mUnited Airlines
Deal found 9/15$495
This Delta deal was found by Cheapflights users on 9/15. 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.
Sat 11/1512:58 pmBOI - NAS
2 stops22h 32mDelta
Fri 11/212:55 pmNAS - BOI
1 stop9h 30mDelta
Deal found 9/15$496
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/15:05 amGEG - SJU
2 stops15h 52mUnited Airlines
Tue 10/71:05 amSJU - GEG
2 stops14h 31mUnited Airlines
Deal found 9/14$508
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/27:00 amBOI - NAS
2 stops11h 11mAmerican Airlines
Fri 12/51:13 pmNAS - BOI
2 stops11h 10mAmerican Airlines
Deal found 9/14$547
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/292:31 pmBOI - SJU
2 stops27h 29mUnited Airlines
Mon 11/32:05 amSJU - BOI
2 stops14h 20mUnited Airlines
Deal found 9/14$554

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Caribbean Islands 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 September 16, 2025.
Use the filters below to find and compare flights from Idaho to Caribbean Islands that are best for you.

Fly from

Idaho

Fly to

Caribbean Islands

Route

Depart

Return

Price

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Wed 10/29

5:25 am-11:56 pm

2 stops16h 31m

San Juan Luis Munoz Marin Intl

Tue 11/4

7:15 am-5:13 pm

2 stops12h 58m

$395

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Sun 10/26

6:15 am-5:25 pm

1 stop9h 10m

San Juan Luis Munoz Marin Intl

Wed 10/29

1:05 am-1:44 pm

2 stops14h 39m

$395

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Sat 1/24

6:00 pm-4:51 pm

2 stops19h 51m

San Juan Luis Munoz Marin Intl

Wed 2/25

4:25 pm-11:42 pm

1 stop10h 17m

$395

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Mon 10/13

7:05 pm-11:56 am

2 stops13h 51m

San Juan Luis Munoz Marin Intl

Thu 10/30

7:00 am-10:48 pm

2 stops18h 48m

$431

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Sat 1/24

3:05 pm-1:07 pm

2 stops18h 02m

San Juan Luis Munoz Marin Intl

Mon 2/2

2:12 pm-12:20 am

2 stops14h 08m

$431

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Tue 1/20

3:05 pm-1:07 pm

2 stops18h 02m

San Juan Luis Munoz Marin Intl

Tue 1/27

3:21 pm-11:44 pm

2 stops12h 23m

$431

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Mon 1/19

7:30 pm-1:07 pm

2 stops14h 37m

San Juan Luis Munoz Marin Intl

Thu 2/26

6:15 am-6:25 pm

2 stops15h 10m

$467

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Sat 1/24

3:51 pm-12:00 pm

2 stops16h 09m

San Juan Luis Munoz Marin Intl

Mon 2/2

6:45 am-8:45 pm

1 stop18h 00m

$470

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Sat 3/7

6:00 pm-4:29 pm

2 stops19h 29m

San Juan Luis Munoz Marin Intl

Wed 3/11

3:25 pm-11:42 pm

1 stop10h 17m

$473

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Sun 11/9

6:15 am-6:25 pm

1 stop9h 10m

San Juan Luis Munoz Marin Intl

Fri 11/14

2:05 am-1:44 pm

2 stops14h 39m

$485

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 46 results
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Best time to book a flight from Idaho to Caribbean Islands

Have a flexible travel schedule? Discover the best time to fly to Caribbean Islands from Idaho 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 Idaho to Caribbean Islands

What is the cheapest month to book a flight from Idaho to Caribbean Islands?

Currently, September is the cheapest month in which you can book a flight from Idaho to Caribbean Islands (average of $254). Flying from Idaho to Caribbean Islands in June is currently the most expensive (average of $339). 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 ID to EPX?

Find hourly flight availability from Idaho to Caribbean Islands. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from Idaho to Caribbean Islands, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

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

  • How long is the flight from Idaho to Caribbean Islands?

    A quick flight from Idaho to Caribbean Islands can take about 9h 10m. Delta provides one of the quickest options available for as low as $485. The distance between Idaho and Caribbean Islands is about 3374 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Idaho to Caribbean Islands one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $216. Users have also found prices from $216 and $342 on American Airlines and United Airlines, respectively.

  • Can I find deals for flights from Idaho to Caribbean Islands that include hotel bookings?

    Yes. In addition to deals on Idaho to Caribbean Islands flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to Caribbean Islands?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Caribbean Islands.

  • Can I find deals for business class flights from Idaho to Caribbean Islands?

    Yes. Cheapflights offers flight deals from Idaho to Caribbean Islands 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 Idaho to Caribbean Islands?

    Currently, September is the cheapest month in which you can book a flight from Idaho to Caribbean Islands (average of $254). Flying from Idaho to Caribbean Islands in June is currently the most expensive (average of $339). 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 Idaho to Caribbean Islands

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Idaho to Caribbean Islands

Discover the top 5 airlines that operate flights from Idaho to Caribbean Islands. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$198Average$668FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$475Average$1,133FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$484Average$743FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$495Average$733FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$530Average$774FlexibilityNo cancel feeOn-time71%

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