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Caribbean Islands

$173+ Cheap flights from Seattle (SEA) 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheap flight deals from Seattle to Caribbean Islands

Keep the following information in mind while searching for Seattle to Caribbean Islands flight deals. Data was last updated June 18, 2025.

Round-trip from

$329
(American Airlines)

One-way from

$173
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$650
From Seattle/Tacoma Intl to Caribbean Islands
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One-way flight from Seattle/Tacoma Intl to Caribbean Islands
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Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Seattle to Caribbean Islands

Cheapest flights from Seattle to Caribbean Islands
Explore the most affordable flight options available from Seattle to Caribbean Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

This American Airlines deal was found by Cheapflights users on 6/18. 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.
Sun 9/149:52 pmSEA - PUJ
1 stop14h 33mAmerican Airlines
Tue 9/303:25 pmPUJ - SEA
2 stops20h 54mAmerican Airlines
Deal found 6/18$329
This Delta deal was found by Cheapflights users on 6/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/69:55 pmSEA - PUJ
1 stop11h 37mDelta
Sat 10/112:14 pmPUJ - SEA
1 stop12h 31mDelta
Deal found 6/18$395
This FlightHub deal was found by Cheapflights users on 6/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/165:30 pmSEA - STT
2 stops16h 00mSpirit Airlines
Wed 7/234:05 pmSTT - SEA
2 stops27h 20mSpirit Airlines
Deal found 6/16$423
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Tue 8/512:20 amSEA - PUJ
2 stops12h 15mUnited Airlines
Tue 8/124:35 pmPUJ - SEA
1 stop11h 21mUnited Airlines
Deal found 6/16$425
This FlightHub deal was found by Cheapflights users on 6/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/85:30 pmSEA - SJU
2 stops25h 20mSpirit Airlines
Sun 8/101:37 amSJU - SEA
2 stops17h 48mSpirit Airlines
Deal found 6/18$427
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Wed 11/51:24 amSEA - SJU
1 stop9h 16mAmerican Airlines
Tue 11/112:50 pmSJU - SEA
1 stop10h 59mAmerican Airlines
Deal found 6/15$451
This Mytrip deal was found by Cheapflights users on 6/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/225:30 pmSEA - SJU
2 stops19h 00mMultiple Airlines
Sun 7/271:37 amSJU - SEA
2 stops24h 10mMultiple Airlines
Deal found 6/18$458
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Tue 9/2311:15 pmSEA - SJU
1 stop11h 30mUnited Airlines
Mon 9/291:05 amSJU - SEA
2 stops14h 46mUnited Airlines
Deal found 6/17$467
This Southwest deal was found by Cheapflights users on 6/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1111:10 pmSEA - SJU
2 stops12h 00mSouthwest
Fri 8/155:00 amSJU - SEA
2 stops14h 45mSouthwest
Deal found 6/15$473
This American Airlines deal was found by Cheapflights users on 6/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/228:08 pmSEA - STT
1 stop16h 52mAmerican Airlines
Sat 8/3012:44 pmSTT - SEA
1 stop14h 30mAmerican Airlines
Deal found 6/17$473
This Delta deal was found by Cheapflights users on 6/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:15 amSEA - SJU
1 stop13h 04mDelta
Sat 1/106:15 amSJU - SEA
1 stop12h 39mDelta
Deal found 6/16$476
This JetBlue deal was found by Cheapflights users on 6/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2411:40 pmSEA - NAS
1 stop11h 25mJetBlue
Wed 10/83:10 pmNAS - SEA
1 stop10h 00mJetBlue
Deal found 6/16$477

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle 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 June 18, 2025.
Use the filters below to find and compare flights from Seattle to Caribbean Islands that are best for you.

Fly from

Seattle

Fly to

Caribbean Islands

Route

Depart

Return

Price

SeattlePunta Cana

SEA - PUJ

SEAPUJ

Seattle/Tacoma Intl

Sun 9/14

9:52 pm-3:25 pm

1 stop14h 33m

Punta Cana

Tue 9/30

3:25 pm-9:19 am

2 stops20h 54m

$329

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Wed 7/16

5:30 pm-12:30 pm

2 stops16h 00m

Saint Thomas Island Cyril E King

Wed 7/23

4:05 pm-4:25 pm

2 stops27h 20m

$423

SeattlePunta Cana

SEA - PUJ

SEAPUJ

Seattle/Tacoma Intl

Tue 8/5

12:20 am-3:35 pm

2 stops12h 15m

Punta Cana

Tue 8/12

4:35 pm-12:56 am

1 stop11h 21m

$425

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 8/8

5:30 pm-9:50 pm

2 stops25h 20m

San Juan Luis Munoz Marin Intl

Sun 8/10

1:37 am-4:25 pm

2 stops17h 48m

$427

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 7/22

5:30 pm-3:30 pm

2 stops19h 00m

San Juan Luis Munoz Marin Intl

Sun 7/27

1:37 am-10:47 pm

2 stops24h 10m

$458

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 8/25

10:55 pm-12:34 pm

1 stop10h 39m

San Juan Luis Munoz Marin Intl

Sat 9/6

1:25 pm-10:06 pm

1 stop11h 41m

$467

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 9/3

5:35 am-10:30 pm

2 stops13h 55m

San Juan Luis Munoz Marin Intl

Sun 9/7

10:30 pm-1:55 pm

2 stops18h 25m

$471

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Fri 8/22

8:08 pm-4:00 pm

1 stop16h 52m

Saint Thomas Island Cyril E King

Sat 8/30

12:44 pm-12:14 am

1 stop14h 30m

$473

SeattleWillemstad

SEA - CUR

SEACUR

Seattle/Tacoma Intl

Sat 8/30

11:30 pm-3:18 pm

2 stops12h 48m

Willemstad Hato Int.

Sat 9/6

2:57 pm-9:21 am

2 stops21h 24m

$481

SeattleSanto Domingo

SEA - SDQ

SEASDQ

Seattle/Tacoma Intl

Fri 10/10

12:40 am-5:52 pm

2 stops14h 12m

Santo Domingo Las Americas

Mon 10/20

3:15 pm-12:11 am

1 stop11h 56m

$483

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 60 results
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Best time to book a flight from Seattle to Caribbean Islands

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

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

Currently, September is the cheapest month in which you can book a flight from Seattle to Caribbean Islands (average of $254). Flying from Seattle 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 SEA to EPX?

Find hourly flight availability from Seattle 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 June 18, 2025.

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

Rainfall in Caribbean Islands by month

Plan your trip to Caribbean Islands by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Caribbean Islands 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 Caribbean Islands when rainfall is around 2.2 in.

Temperature in Caribbean Islands by month

Plan your trip to Caribbean Islands by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Caribbean Islands, 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 Caribbean Islands

Get insights into the airlines that provide service to Caribbean Islands. 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 Islands. Reviews last updated June 18, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Seattle to Caribbean Islands to help guide your decision. 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,810 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
JetBlue
7.3
Good
2,924 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

Related info for your journey

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

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Caribbean Islands.

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

    The cheapest airlines for a one-way flight from Seattle to Caribbean Islands are Spirit Airlines ($173), American Airlines ($189), and United Airlines ($207).

  • What are the most popular routes from Seattle to Caribbean Islands?

    When deciding which route to take from Seattle to Caribbean Islands consider Seattle/Tacoma Intl - San Juan Luis Munoz Marin Intl, Seattle/Tacoma Intl - Nassau Intl or Seattle/Tacoma Intl - Punta Cana as they are the most popular.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Seattle to Caribbean Islands (average of $254). Flying from Seattle 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.

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Alternative routes for Seattle to Caribbean Islands

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Seattle to Caribbean Islands

Discover the top 10 airlines that operate flights from Seattle 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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$194Average$798FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$233Average$341FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$252Average$654FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$331Average$691FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$340Average$666FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$341Average$679FlexibilityNo cancel feeOn-time69%
DeltaCheapest$395Average$677FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$447Average$882FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$466Average$753FlexibilityNo cancel feeOn-time63%
Air CanadaCheapest$648Average$802FlexibilityNo cancel feeOn-time67%

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