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$163+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap 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 September 16, 2025.

Round-trip from

$363
(Delta)

One-way from

$163
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$507
From Washington to Puerto Rico
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One-way flight from Washington to Puerto Rico
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Highest demand for flights based on searches. 4% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 16, 2025.

This American Airlines deal was found by Cheapflights users on 9/14. 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 10/2511:24 pmSEA - SJU
1 stop11h 56mAmerican Airlines
Wed 11/56:00 amSJU - SEA
2 stops13h 31mAmerican Airlines
Deal found 9/14$363
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 10/611:24 pmSEA - SJU
2 stops13h 30mAmerican Airlines
Wed 10/223:00 pmSJU - SEA
1 stop21h 49mAmerican Airlines
Deal found 9/15$364
This CheapOair deal was found by Cheapflights users on 9/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1711:40 pmSEA - SJU
1 stop18h 44mJetBlue
Fri 10/246:00 amSJU - SEA
1 stop19h 36mJetBlue
Deal found 9/16$370
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:30 amSEA - SJU
2 stops12h 52mUnited Airlines
Thu 11/202:25 pmSJU - SEA
1 stop12h 45mUnited Airlines
Deal found 9/15$373
This Frontier deal was found by Cheapflights users on 9/13. 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.
Thu 11/1312:52 pmPDX - SJU
2 stops23h 18mFrontier
Sun 11/162:11 amSJU - PDX
2 stops13h 45mFrontier
Deal found 9/13$373
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:54 pmSEA - SJU
1 stop9h 55mUnited Airlines
Fri 10/311:05 amSJU - SEA
2 stops15h 49mUnited Airlines
Deal found 9/15$375
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 11/127:00 amSEA - SJU
1 stop10h 00mUnited Airlines
Fri 11/142:05 amSJU - SEA
1 stop13h 06mUnited Airlines
Deal found 9/16$377
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1111:40 pmSEA - SJU
1 stop22h 17mJetBlue
Thu 10/161:25 pmSJU - SEA
1 stop12h 11mJetBlue
Deal found 9/15$382
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:40 pmSEA - SJU
1 stop12h 16mJetBlue
Mon 10/63:03 amSJU - SEA
1 stop22h 33mJetBlue
Deal found 9/15$384
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:52 pmPDX - SJU
2 stops24h 18mFrontier
Wed 11/51:59 amSJU - PDX
2 stops13h 57mFrontier
Deal found 9/15$384
This JetBlue deal was found by Cheapflights users on 9/13. 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.
Sat 9/2711:59 pmSEA - SJU
1 stop13h 44mJetBlue
Fri 10/31:29 pmSJU - SEA
1 stop11h 55mJetBlue
Deal found 9/13$385
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2911:59 pmSEA - SJU
1 stop13h 44mJetBlue
Thu 10/21:29 pmSJU - SEA
1 stop11h 55mJetBlue
Deal found 9/15$389

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 September 16, 2025.
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

Mon 2/23

7:00 am-9:00 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Thu 2/26

2:05 am-11:20 am

1 stop13h 15m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 11/4

5:30 am-10:22 pm

2 stops12h 52m

San Juan Luis Munoz Marin Intl

Wed 11/19

2:05 am-11:11 am

1 stop13h 06m

$373

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 9/27

11:59 pm-4:43 pm

1 stop13h 44m

San Juan Luis Munoz Marin Intl

Sat 10/4

1:29 pm-10:24 pm

1 stop11h 55m

$384

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 11/7

5:25 pm-3:11 pm

2 stops17h 46m

San Juan Luis Munoz Marin Intl

Fri 11/14

3:20 pm-10:05 pm

1 stop10h 45m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Thu 10/30

6:00 am-9:59 pm

1 stop12h 59m

San Juan Luis Munoz Marin Intl

Thu 11/6

7:15 am-1:00 pm

1 stop9h 45m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 12/6

11:59 pm-3:40 pm

1 stop11h 41m

San Juan Luis Munoz Marin Intl

Fri 12/12

2:25 pm-9:15 pm

1 stop10h 50m

$419

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Mon 10/13

7:05 pm-11:56 am

2 stops13h 51m

San Juan Luis Munoz Marin Intl

Thu 10/30

7:00 am-10:48 pm

2 stops18h 48m

$431

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Sat 1/24

3:05 pm-1:07 pm

2 stops18h 02m

San Juan Luis Munoz Marin Intl

Mon 2/2

2:12 pm-12:20 am

2 stops14h 08m

$431

PortlandAguadilla

PDX - BQN

PDXBQN

Portland

Wed 2/18

7:11 am-11:57 pm

2 stops12h 46m

Aguadilla Borinquen

Tue 2/24

1:09 am-1:44 pm

2 stops16h 35m

$431

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Tue 1/20

3:05 pm-1:07 pm

2 stops18h 02m

San Juan Luis Munoz Marin Intl

Tue 1/27

3:21 pm-11:44 pm

2 stops12h 23m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 55 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, September is the cheapest month in which you can book a flight from State of Washington to Puerto Rico (average of $254). Flying from State of Washington to Puerto Rico 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 WA to PR?

Find hourly flight availability from Washington to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from State of Washington to Puerto Rico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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?

    United Airlines, JetBlue, and Delta can get you from State of Washington to Puerto Rico in just under 10h. Your travel time can differ by up to 7h 46m. 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 $163. Delta flights start at $210 while deals on American Airlines start at $216 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, September is the cheapest month in which you can book a flight from State of Washington to Puerto Rico (average of $254). Flying from State of Washington to Puerto Rico 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 Washington to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Luis Munoz Marin Intl flights
John F Kennedy Intl to Luis Munoz Marin Intl flights
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O'Hare Intl to Montego Bay flights
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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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$194Average$796FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$233Average$341FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$306Average$724FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$326Average$563FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$355Average$680FlexibilityNo cancel feeOn-time71%
DeltaCheapest$359Average$615FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$447Average$812FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$494Average$688FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$678Average$880FlexibilityNo cancel feeOn-time75%

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