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Puerto Rico

$135+ Cheap flights from Washington to Puerto Rico

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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
1 adult, Economy
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Cheap flight deals from Washington to Puerto Rico

Cheapest flights from Washington to Puerto Rico
Explore the most affordable flight options available from Washington to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 2, 2026.

This American Airlines deal was found by Cheapflights users on 1/31. 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.
Mon 3/26:13 pm
SEA
-
SJU
2 stops11h 47m
American Airlines
Tue 3/35:25 pm
SJU
-
SEA
1 stop10h 59m
American Airlines
Deal found 1/31$379
This Delta deal was found by Cheapflights users on 1/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:10 am
SEA
-
SJU
1 stop12h 49m
Delta
Tue 3/106:15 am
SJU
-
SEA
2 stops17h 33m
Delta
Deal found 1/31$384
This Trip.com deal was found by Cheapflights users on 1/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/281:16 pm
SEA
-
SJU
2 stops18h 21m
Multiple Airlines
Sat 3/77:44 pm
SJU
-
SEA
2 stops18h 35m
Multiple Airlines
Deal found 1/31$391
This Southwest deal was found by Cheapflights users on 1/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:25 pm
SEA
-
SJU
2 stops12h 05m
Southwest
Wed 3/410:20 am
SJU
-
SEA
2 stops15h 30m
Southwest
Deal found 1/31$404
This United Airlines deal was found by Cheapflights users on 1/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:05 pm
SEA
-
SJU
1 stop11h 40m
United Airlines
Thu 4/161:40 pm
SJU
-
SEA
1 stop12h 16m
United Airlines
Deal found 1/31$418
This United Airlines deal was found by Cheapflights users on 2/1. 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 4/276:30 am
SEA
-
SJU
1 stop11h 08m
United Airlines
Mon 5/43:56 pm
SJU
-
SEA
1 stop11h 01m
United Airlines
Deal found 2/1$420
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Tue 4/216:00 am
GEG
-
SJU
1 stop14h 01m
American Airlines
Tue 4/285:45 am
SJU
-
GEG
2 stops14h 10m
American Airlines
Deal found 1/31$424
This Faresmojo deal was found by Cheapflights users on 2/1. 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 Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1411:59 pm
SEA
-
SJU
1 stop10h 48m
JetBlue
Sun 6/211:45 pm
SJU
-
SEA
1 stop11h 55m
JetBlue
Deal found 2/1$427
This United Airlines deal was found by Cheapflights users on 1/30. 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.
Sat 5/167:36 pm
SEA
-
SJU
2 stops13h 58m
United Airlines
Sat 5/237:20 am
SJU
-
SEA
1 stop11h 20m
United Airlines
Deal found 1/30$434
This United Airlines deal was found by Cheapflights users on 2/1. 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 12/38:00 am
SEA
-
SJU
1 stop10h 22m
United Airlines
Thu 12/32:05 am
SJU
-
SEA
1 stop12h 54m
United Airlines
Deal found 2/1$440
This Southwest deal was found by Cheapflights users on 1/30. 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.
Mon 2/235:50 am
PDX
-
SJU
2 stops14h 50m
Southwest
Fri 2/276:00 am
SJU
-
PDX
2 stops12h 55m
Southwest
Deal found 1/30$446
This American Airlines deal was found by Cheapflights users on 2/1. 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 4/15:38 pm
PDX
-
SJU
2 stops12h 22m
American Airlines
Wed 4/153:10 pm
SJU
-
PDX
1 stop11h 43m
American Airlines
Deal found 2/1$449

Find flight deals from Washington to Puerto Rico

Keep the following information in mind while searching for Washington to Puerto Rico flight deals. Data was last updated February 2, 2026.

Round-trip from

$379
(American Airlines)

One-way from

$135
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$535
From Washington to Puerto Rico
Search Deals
One-way flight from Washington to Puerto Rico
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Puerto Rico 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 February 2, 2026.
Use the filters below to find and compare flights from Washington to Puerto Rico that are best for you.

Fly from

Washington

Fly to

Puerto Rico

Route

Depart

Return

Price

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 3/1

10:57 pm-1:40 pm

1 stop10h 43m

San Juan Luis Munoz Marin Intl

Wed 3/4

7:00 am-3:57 pm

2 stops12h 57m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/3

8:17 am-10:22 pm

1 stop10h 05m

San Juan Luis Munoz Marin Intl

Tue 3/10

7:05 am-7:03 pm

2 stops14h 58m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 4/27

6:30 am-8:38 pm

1 stop11h 08m

San Juan Luis Munoz Marin Intl

Mon 5/4

3:56 pm-11:57 pm

1 stop11h 01m

$420

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Sat 4/25

6:00 am-11:12 pm

2 stops14h 12m

San Juan Luis Munoz Marin Intl

Thu 4/30

7:30 am-9:05 pm

2 stops16h 35m

$424

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Tue 4/28

1:33 pm-10:48 am

2 stops18h 15m

San Juan Luis Munoz Marin Intl

Tue 5/5

5:45 am-4:55 pm

2 stops14h 10m

$424

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Tue 2/24

5:00 am-12:36 am

2 stops15h 36m

San Juan Luis Munoz Marin Intl

Tue 3/3

2:25 pm-9:17 pm

1 stop10h 52m

$424

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Tue 4/21

6:34 am-11:02 pm

2 stops13h 28m

San Juan Luis Munoz Marin Intl

Tue 4/28

5:45 am-4:55 pm

2 stops14h 10m

$424

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 5/16

7:36 pm-12:34 pm

2 stops13h 58m

San Juan Luis Munoz Marin Intl

Sat 5/23

7:20 am-3:40 pm

1 stop11h 20m

$434

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 4/9

7:00 am-8:34 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

Thu 4/16

1:40 pm-10:56 pm

1 stop12h 16m

$438

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 2/23

5:50 am-12:40 am

2 stops14h 50m

San Juan Luis Munoz Marin Intl

Fri 2/27

6:00 am-2:55 pm

2 stops12h 55m

$446

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 58 results
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Best time to book a flight from Washington to Puerto Rico

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

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

Currently, March is the cheapest month in which you can book a flight from State of Washington to Puerto Rico (average of $289). Flying from State of Washington to Puerto Rico 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 Puerto Rico. 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 Puerto Rico?

    American Airlines, United Airlines, and Delta can get you from State of Washington to Puerto Rico in just under 10h 05m. Your travel time can differ by up to 4h 07m. Airlines will cover a distance of 3723 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at $170. American Airlines flights start at $178 while deals on Delta start at $182 one-way.

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

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

  • How can I find direct flights from Washington to Puerto Rico?

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

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

    Yes. Cheapflights offers flight deals from Washington to Puerto Rico 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 Puerto Rico?

    Currently, March is the cheapest month in which you can book a flight from State of Washington to Puerto Rico (average of $289). Flying from State of Washington to Puerto Rico 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Washington to Puerto Rico

Discover the top 9 airlines that operate flights from Washington to Puerto Rico. 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 February 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$175Average$344FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$191Average$341FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$282Average$553FlexibilityNo cancel feeOn-time62%
DeltaCheapest$342Average$565FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$363Average$703FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$363Average$658FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$454Average$810FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$494Average$692FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$626Average$880FlexibilityNo cancel feeOn-time75%

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