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$188+ Cheap flights from Idaho to Caribbean

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJU
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Idaho to Caribbean

Cheapest flights from Idaho to Caribbean
Explore the most affordable flight options available from Idaho to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Southwest deal was found by Cheapflights users on 10/28. 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.
Fri 12/512:40 pmGEG - SJU
2 stops17h 15mSouthwest
Fri 12/1211:55 amSJU - GEG
2 stops16h 00mSouthwest
Deal found 10/28$465
This American Airlines deal was found by Cheapflights users on 10/28. 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 12/26:31 amGEG - SJU
2 stops14h 13mAmerican Airlines
Wed 12/176:00 amSJU - GEG
2 stops14h 40mAmerican Airlines
Deal found 10/28$467
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/185:25 amGEG - SJU
1 stop12h 10mAmerican Airlines
Wed 11/267:15 amSJU - GEG
1 stop19h 43mAmerican Airlines
Deal found 10/28$470
This Delta deal was found by Cheapflights users on 10/28. 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 11/125:20 amBOI - SJU
2 stops15h 36mDelta
Wed 11/197:15 amSJU - BOI
2 stops14h 39mDelta
Deal found 10/28$490
This Southwest deal was found by Cheapflights users on 10/29. 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 12/15:50 amGEG - SJU
2 stops15h 50mSouthwest
Sat 12/68:20 amSJU - GEG
2 stops16h 25mSouthwest
Deal found 10/29$495
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/55:25 amGEG - SJU
2 stops12h 57mUnited Airlines
Fri 12/122:25 pmSJU - GEG
1 stop10h 34mUnited Airlines
Deal found 10/28$503
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/121:40 pmBOI - SJU
2 stops17h 37mAmerican Airlines
Wed 11/197:15 amSJU - BOI
1 stop18h 17mAmerican Airlines
Deal found 10/28$508
This Booking.com deal was found by Cheapflights users on 10/29. 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.
Thu 12/45:01 pmGEG - PUJ
2 stops41h 55mFrontier
Wed 12/106:50 pmPUJ - GEG
2 stops20h 23mFrontier
Deal found 10/29$516
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/245:25 amGEG - SJU
2 stops25h 47mAmerican Airlines
Fri 1/167:07 amSJU - GEG
1 stop15h 42mAmerican Airlines
Deal found 10/27$538
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/286:15 amBOI - SJU
1 stop9h 10mUnited Airlines
Tue 12/98:30 amSJU - BOI
2 stops14h 13mUnited Airlines
Deal found 10/29$540
This United Airlines deal was found by Cheapflights users on 10/28. 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 11/126:15 amBOI - SJU
2 stops13h 07mUnited Airlines
Tue 11/182:05 amSJU - BOI
2 stops14h 39mUnited Airlines
Deal found 10/28$580
This Southwest deal was found by Cheapflights users on 10/29. 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 12/155:15 amBOI - SJU
2 stops13h 15mSouthwest
Sat 12/207:05 amSJU - BOI
2 stops16h 50mSouthwest
Deal found 10/29$585

Cheap flight deals from Idaho to Caribbean

Keep the following information in mind while searching for Idaho to Caribbean flight deals. Data was last updated October 30, 2025.

Round-trip from

$395
(Delta)

One-way from

$188
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$550
From Idaho to Caribbean
Search Deals
One-way flight from Idaho to Caribbean
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Caribbean 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 October 30, 2025.
Use the filters below to find and compare flights from Idaho to Caribbean that are best for you.

Fly from

Idaho

Fly to

Caribbean

Route

Depart

Return

Price

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Mon 4/6

11:30 pm-1:23 pm

1 stop11h 53m

San Juan Luis Munoz Marin Intl

Wed 4/15

6:15 am-12:11 am

2 stops19h 56m

$460

SpokaneNassau

GEG - NAS

GEGNAS

Spokane

Tue 3/3

1:00 pm-4:45 pm

2 stops24h 45m

Nassau Intl

Thu 3/5

6:10 pm-9:24 am

2 stops18h 14m

$493

BoiseNassau

BOI - NAS

BOINAS

Boise Air Term. Gowen Fld

Sat 2/7

7:05 pm-3:22 pm

2 stops18h 17m

Nassau Intl

Wed 2/11

4:25 pm-10:12 am

2 stops19h 47m

$496

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Fri 12/5

5:25 am-10:22 pm

2 stops12h 57m

San Juan Luis Munoz Marin Intl

Fri 12/12

2:25 pm-8:59 pm

1 stop10h 34m

$503

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Wed 11/12

1:40 pm-10:17 am

2 stops17h 37m

San Juan Luis Munoz Marin Intl

Wed 11/19

7:15 am-10:32 pm

1 stop18h 17m

$508

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Tue 3/3

7:00 am-9:00 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Wed 3/4

2:25 pm-9:17 pm

1 stop10h 52m

$515

SpokanePunta Cana

GEG - PUJ

GEGPUJ

Spokane

Thu 12/4

5:01 pm-2:56 pm

2 stops41h 55m

Punta Cana

Wed 12/10

6:50 pm-11:13 am

2 stops20h 23m

$516

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Fri 11/28

6:15 am-6:25 pm

1 stop9h 10m

San Juan Luis Munoz Marin Intl

Tue 12/9

8:30 am-7:43 pm

2 stops14h 13m

$540

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Tue 3/3

6:25 am-6:25 pm

1 stop9h 00m

San Juan Luis Munoz Marin Intl

Wed 3/4

2:25 pm-9:32 pm

1 stop10h 07m

$540

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Sat 1/24

6:00 am-10:26 pm

1 stop12h 26m

San Juan Luis Munoz Marin Intl

Mon 2/2

7:07 am-6:49 pm

1 stop15h 42m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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

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

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

Currently, June is the cheapest month in which you can book a flight from Idaho to Caribbean (average of $217). Flying from Idaho to Caribbean in August is currently the most expensive (average of $472). 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 CB?

Find hourly flight availability from Idaho to Caribbean. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

It’s optimal to fly from Idaho to Caribbean in the evening. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Idaho to Caribbean?

Use this chart to determine the cheapest time to fly round-trip from Idaho to Caribbean. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Idaho to Caribbean 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.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Caribbean. 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?

    For as low as $460, Delta can have you in Caribbean from Idaho in 11h 53m. Idaho and Caribbean are separated by a distance of 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 one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $198. Users have also found prices from $198 and $241 on Southwest and Frontier, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho to Caribbean 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?

    Currently, June is the cheapest month in which you can book a flight from Idaho to Caribbean (average of $217). Flying from Idaho to Caribbean in August is currently the most expensive (average of $472). 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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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

Discover the top 5 airlines that operate flights from Idaho to Caribbean. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$198Average$722FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$449Average$700FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$463Average$723FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$475Average$1,133FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$530Average$739FlexibilityNo cancel feeOn-time71%

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