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$135+ Cheap flights from Washington 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Washington to Caribbean

Cheapest flights from Washington to Caribbean
Explore the most affordable flight options available from Washington to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:00 am
SEA
-
SJU
1 stop10h 00m
United Airlines
Tue 3/38:05 am
SJU
-
SEA
2 stops14h 58m
United Airlines
Deal found 1/19$379
This American Airlines deal was found by Cheapflights users on 1/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:00 am
SEA
-
SJU
1 stop10h 39m
American Airlines
Fri 2/272:30 pm
SJU
-
SEA
1 stop11h 27m
American Airlines
Deal found 1/19$384
This Frontier deal was found by Cheapflights users on 1/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2312:00 pm
SEA
-
PUJ
2 stops22h 02m
Frontier
Thu 2/263:12 pm
PUJ
-
SEA
2 stops21h 39m
Frontier
Deal found 1/19$387
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:16 pm
SEA
-
SJU
2 stops31h 38m
Multiple Airlines
Thu 3/55:08 pm
SJU
-
SEA
1 stop20h 57m
Multiple Airlines
Deal found 1/19$395
This CheapOair deal was found by Cheapflights users on 1/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:30 am
SEA
-
SJU
1 stop12h 09m
Multiple Airlines
Sat 5/304:10 pm
SJU
-
SEA
1 stop18h 35m
Multiple Airlines
Deal found 1/19$397
This Southwest deal was found by Cheapflights users on 1/20. 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.
Wed 4/296:30 am
PDX
-
SJU
2 stops13h 10m
Southwest
Tue 5/55:05 am
SJU
-
PDX
2 stops18h 55m
Southwest
Deal found 1/20$397
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3110:43 pm
SEA
-
AUA
1 stop12h 43m
Multiple Airlines
Wed 4/83:41 pm
AUA
-
SEA
1 stop22h 10m
Multiple Airlines
Deal found 1/20$398
This Southwest deal was found by Cheapflights users on 1/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:05 am
SEA
-
SJU
2 stops13h 35m
Southwest
Thu 3/52:05 pm
SJU
-
SEA
2 stops14h 25m
Southwest
Deal found 1/19$399
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/261:16 pm
SEA
-
SJU
2 stops31h 27m
Multiple Airlines
Thu 3/55:08 pm
SJU
-
SEA
1 stop20h 57m
Multiple Airlines
Deal found 1/19$400
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Thu 2/195:00 am
SEA
-
SJU
1 stop9h 25m
United Airlines
Thu 2/262:10 pm
SJU
-
SEA
1 stop13h 41m
United Airlines
Deal found 1/20$401
This Southwest deal was found by Cheapflights users on 1/21. 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 4/77:25 pm
PDX
-
SJU
2 stops12h 10m
Southwest
Thu 4/96:50 am
SJU
-
PDX
2 stops16h 20m
Southwest
Deal found 1/21$405
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/239:18 am
SEA
-
SJU
2 stops25h 48m
Multiple Airlines
Thu 3/55:08 pm
SJU
-
SEA
1 stop20h 57m
Multiple Airlines
Deal found 1/19$411

Find flight deals from Washington to Caribbean

Keep the following information in mind while searching for Washington to Caribbean flight deals. Data was last updated January 21, 2026.

Round-trip from

$379
(United Airlines)

One-way from

$135
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$478
From Washington to Caribbean
Search Deals
One-way flight from Washington to Caribbean
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 January 21, 2026.
Use the filters below to find and compare flights from Washington to Caribbean that are best for you.

Fly from

Washington

Fly to

Caribbean

Route

Depart

Return

Price

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 5/8

11:14 pm-12:34 pm

1 stop10h 20m

San Juan Luis Munoz Marin Intl

Tue 5/12

7:20 am-7:00 pm

2 stops14h 40m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 4/15

6:30 am-8:38 pm

1 stop11h 08m

San Juan Luis Munoz Marin Intl

Wed 4/22

1:40 pm-10:56 pm

1 stop12h 16m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 2/19

7:10 pm-1:17 pm

2 stops14h 07m

San Juan Luis Munoz Marin Intl

Thu 2/26

3:46 pm-11:00 pm

1 stop11h 14m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 3/1

6:45 am-9:26 pm

1 stop10h 41m

San Juan Luis Munoz Marin Intl

Thu 3/5

8:05 am-7:03 pm

2 stops14h 58m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 2/28

12:55 pm-6:11 am

2 stops13h 16m

San Juan Luis Munoz Marin Intl

Thu 3/5

2:25 pm-10:59 pm

1 stop12h 34m

$384

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 4/29

6:30 am-10:40 pm

2 stops13h 10m

San Juan Luis Munoz Marin Intl

Tue 5/5

5:05 am-9:00 pm

2 stops18h 55m

$397

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 3/1

6:25 pm-10:30 am

2 stops12h 05m

San Juan Luis Munoz Marin Intl

Thu 3/5

2:05 pm-12:30 am

2 stops14h 25m

$399

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 2/27

4:30 pm-10:00 am

2 stops13h 30m

San Juan Luis Munoz Marin Intl

Thu 3/5

2:05 pm-12:30 am

2 stops14h 25m

$428

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 4/26

5:59 pm-12:50 pm

2 stops15h 51m

San Juan Luis Munoz Marin Intl

Tue 5/5

2:34 pm-11:53 pm

2 stops12h 19m

$440

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 3/11

7:00 am-11:59 pm

1 stop13h 59m

San Juan Luis Munoz Marin Intl

Sat 5/2

7:00 am-10:21 pm

2 stops18h 21m

$440

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

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

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

What is the cheapest month to book a flight from State of Washington to Caribbean?

Currently, April is the cheapest month in which you can book a flight from State of Washington to Caribbean (average of $159). Flying from State of Washington to Caribbean in July is currently the most expensive (average of $454). 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.

Related info for your journey

Find useful and relevant information for your journey from Washington 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 State of Washington to Caribbean?

    Airlines like United Airlines, Southwest, and Delta fly from State of Washington to Caribbean in about 10h 20m. The time it takes to get you to your destination can typically vary by up to 2h 50m. There are 3723 mi between State of Washington and Caribbean. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from State of Washington to Caribbean one-way?

    One-way options have recently been found by users for as low as $119 on Alaska Airlines. Other airlines that offer cheap prices include American Airlines from $144 and JetBlue from $170 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Caribbean?

    Currently, April is the cheapest month in which you can book a flight from State of Washington to Caribbean (average of $159). Flying from State of Washington to Caribbean in July is currently the most expensive (average of $454). 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 Washington to Caribbean

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

Discover the top 10 airlines that operate flights from Washington 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$158Average$674FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$175Average$344FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$191Average$383FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$268Average$666FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$282Average$547FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$340Average$708FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$363Average$698FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$368Average$762FlexibilityNo cancel feeOn-time67%
SouthwestCheapest$494Average$737FlexibilityNo cancel feeOn-time63%
Sun Country AirCheapest$544Average$828FlexibilityNo cancel feeOn-time83%

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