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Caribbean

$146+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJU
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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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 July 31, 2025.

Round-trip from

$370
(Booking.com)

One-way from

$146
(Booking.com)

Popular in

December

Cheapest in

October

Average price

$658
From Idaho to Caribbean
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One-way flight from Idaho to Caribbean
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Highest demand for flights based on searches. 4% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 31, 2025.

This Booking.com deal was found by Cheapflights users on 7/30. 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.
Mon 10/278:58 pmBOI - SJU
2 stops19h 36mSpirit Airlines
Fri 10/317:40 pmSJU - BOI
2 stops19h 41mSpirit Airlines
Deal found 7/30$370
This Southwest deal was found by Cheapflights users on 7/30. 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.
Tue 11/185:15 amBOI - SJU
2 stops10h 20mSouthwest
Fri 11/216:40 amSJU - BOI
2 stops12h 30mSouthwest
Deal found 7/30$375
This Delta deal was found by Cheapflights users on 7/30. 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 10/274:46 pmBOI - SJU
2 stops17h 14mDelta
Fri 10/317:15 amSJU - BOI
2 stops15h 01mDelta
Deal found 7/30$385
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:24 pmGEG - SJU
2 stops13h 36mDelta
Thu 10/307:00 amSJU - GEG
2 stops18h 48mDelta
Deal found 7/29$411
This American Airlines deal was found by Cheapflights users on 7/31. 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 9/61:57 pmBOI - SJU
2 stops19h 14mAmerican Airlines
Sat 9/137:05 pmSJU - BOI
2 stops19h 22mAmerican Airlines
Deal found 7/31$415
This American Airlines deal was found by Cheapflights users on 7/30. 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 10/133:10 pmGEG - SJU
2 stops16h 56mAmerican Airlines
Thu 10/303:10 pmSJU - GEG
1 stop10h 10mAmerican Airlines
Deal found 7/30$415
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/131:57 pmBOI - NAS
2 stops17h 48mAmerican Airlines
Sat 9/2010:26 amNAS - BOI
2 stops13h 22mAmerican Airlines
Deal found 7/30$443
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/271:30 pmGEG - NAS
2 stops18h 40mAmerican Airlines
Tue 9/302:50 pmNAS - GEG
2 stops23h 55mAmerican Airlines
Deal found 7/29$443
This Mytrip deal was found by Cheapflights users on 7/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/159:55 amGEG - SJU
3 stops35h 02mMultiple Airlines
Sat 8/2310:10 amSJU - GEG
3 stops31h 08mMultiple Airlines
Deal found 7/31$458
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Mon 10/276:15 amBOI - SJU
1 stop9h 10mUnited Airlines
Thu 10/301:05 amSJU - BOI
2 stops14h 24mUnited Airlines
Deal found 7/30$465
This Delta deal was found by Cheapflights users on 7/30. 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.
Tue 9/1611:00 amBOI - AUA
2 stops23h 40mDelta
Thu 9/251:55 pmAUA - BOI
2 stops27h 09mDelta
Deal found 7/30$472
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Mon 10/135:05 amGEG - SJU
1 stop9h 25mUnited Airlines
Tue 10/281:05 amSJU - GEG
2 stops14h 40mUnited Airlines
Deal found 7/30$498

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 July 31, 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 10/27

8:58 pm-6:34 pm

2 stops19h 36m

San Juan Luis Munoz Marin Intl

Fri 10/31

7:40 pm-1:21 pm

2 stops19h 41m

$370

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Tue 11/18

5:15 am-6:35 pm

2 stops10h 20m

San Juan Luis Munoz Marin Intl

Fri 11/21

6:40 am-4:10 pm

2 stops12h 30m

$375

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Wed 1/21

5:40 am-11:58 pm

2 stops15h 18m

San Juan Luis Munoz Marin Intl

Tue 1/27

7:00 am-6:25 pm

2 stops14h 25m

$385

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Mon 10/13

7:24 pm-12:00 pm

2 stops13h 36m

San Juan Luis Munoz Marin Intl

Thu 10/30

7:00 am-10:48 pm

2 stops18h 48m

$411

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Sat 9/6

1:57 pm-11:11 am

2 stops19h 14m

San Juan Luis Munoz Marin Intl

Sat 9/13

7:05 pm-12:27 pm

2 stops19h 22m

$415

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Mon 10/13

3:10 pm-11:06 am

2 stops16h 56m

San Juan Luis Munoz Marin Intl

Thu 10/30

3:10 pm-10:20 pm

1 stop10h 10m

$415

BoiseNassau

BOI - NAS

BOINAS

Boise Air Term. Gowen Fld

Sat 9/13

1:57 pm-9:45 am

2 stops17h 48m

Nassau Intl

Sat 9/20

10:26 am-9:48 pm

2 stops13h 22m

$443

SpokaneNassau

GEG - NAS

GEGNAS

Spokane

Sat 9/27

1:30 pm-11:10 am

2 stops18h 40m

Nassau Intl

Tue 9/30

2:50 pm-11:45 am

2 stops23h 55m

$443

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Fri 8/15

9:55 am-11:57 pm

3 stops35h 02m

San Juan Luis Munoz Marin Intl

Sat 8/23

10:10 am-2:18 pm

3 stops31h 08m

$458

BoiseSan Juan

BOI - SJU

BOISJU

Boise Air Term. Gowen Fld

Mon 10/27

6:15 am-5:25 pm

1 stop9h 10m

San Juan Luis Munoz Marin Intl

Thu 10/30

1:05 am-1:29 pm

2 stops14h 24m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 44 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, September is the cheapest month in which you can book a flight from Idaho to Caribbean (average of $254). Flying from Idaho to Caribbean 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 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 July 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Caribbean as you normally would.

Reviews of airlines servicing Caribbean

Get insights into the airlines that provide service to Caribbean. 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 Caribbean. Reviews last updated July 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Idaho to Caribbean. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
LATAM Airlines
7.5
Good
1,822 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $146. Users have also found prices from $193 and $209 on Delta and American Airlines, 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, September is the cheapest month in which you can book a flight from Idaho to Caribbean (average of $254). Flying from Idaho to Caribbean 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Idaho to Caribbean

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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$198Average$684FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$475Average$1,133FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$490Average$750FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$501Average$733FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$547Average$775FlexibilityNo cancel feeOn-time71%

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