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Puerto Rico

$127+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:15 amSEA - SJU
1 stop11h 05mDelta
Sat 1/102:19 pmSJU - SEA
1 stop12h 06mDelta
Deal found 12/17$637
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Sat 12/201:47 pmGEG - SJU
2 stops12h 24mUnited Airlines
Tue 3/317:20 amSJU - GEG
2 stops16h 36mUnited Airlines
Deal found 12/16$664
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2011:59 pmGEG - SJU
1 stop19h 23mAmerican Airlines
Tue 3/316:00 amSJU - GEG
2 stops13h 54mAmerican Airlines
Deal found 12/16$698
This eDestinos deal was found by Cheapflights users on 12/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:20 pmSEA - SJU
1 stop31h 19mMultiple Airlines
Mon 12/293:54 amSJU - SEA
3 stops60h 36mMultiple Airlines
Deal found 12/16$702
This eDestinos deal was found by Cheapflights users on 12/15. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:45 pmPDX - SJU
3 stops25h 54mMultiple Airlines
Sat 1/107:11 pmSJU - PDX
3 stops46h 37mMultiple Airlines
Deal found 12/15$723
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2211:36 amSEA - SJU
1 stop10h 51mDelta
Wed 12/241:07 pmSJU - SEA
2 stops14h 20mDelta
Deal found 12/17$724
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/318:00 amSEA - SJU
2 stops18h 11mUnited Airlines
Fri 1/92:05 amSJU - SEA
1 stop13h 01mUnited Airlines
Deal found 12/16$727
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:49 pmPDX - SJU
1 stop18h 22mAmerican Airlines
Tue 1/61:31 pmSJU - PDX
1 stop14h 15mAmerican Airlines
Deal found 12/16$745
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Fri 12/265:00 amSEA - SJU
2 stops15h 36mUnited Airlines
Fri 1/92:05 amSJU - SEA
1 stop13h 01mUnited Airlines
Deal found 12/17$755
This Southwest deal was found by Cheapflights users on 12/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:00 amPDX - SJU
2 stops13h 05mSouthwest
Tue 1/66:10 amSJU - PDX
2 stops13h 30mSouthwest
Deal found 12/16$755
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2111:36 amSEA - SJU
1 stop10h 51mDelta
Wed 12/244:45 pmSJU - SEA
1 stop10h 46mDelta
Deal found 12/17$764
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/241:43 pmSEA - SJU
1 stop12h 28mUnited Airlines
Thu 12/252:25 pmSJU - SEA
1 stop12h 47mUnited Airlines
Deal found 12/17$768

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 December 18, 2025.

Round-trip from

$363
(Delta)

One-way from

$127
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$804
From Washington to Puerto Rico
Search Deals
One-way flight from Washington to Puerto Rico
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($29 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 December 2025
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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 December 18, 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

Sat 2/21

2:20 pm-6:11 am

1 stop11h 51m

San Juan Luis Munoz Marin Intl

Wed 2/25

8:35 am-6:03 pm

2 stops13h 28m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 2/19

6:05 am-11:58 pm

1 stop13h 53m

San Juan Luis Munoz Marin Intl

Wed 2/25

7:00 am-8:46 pm

2 stops17h 46m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 2/18

7:15 am-11:30 pm

1 stop12h 15m

San Juan Luis Munoz Marin Intl

Wed 3/4

7:30 am-4:02 pm

1 stop12h 32m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 1/12

9:55 pm-1:05 pm

1 stop11h 10m

San Juan Luis Munoz Marin Intl

Wed 1/28

7:00 am-8:46 pm

2 stops17h 46m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 2/22

11:35 pm-2:40 pm

1 stop11h 05m

San Juan Luis Munoz Marin Intl

Wed 3/4

8:10 am-7:03 pm

2 stops14h 53m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 2/19

6:05 am-11:58 pm

1 stop13h 53m

San Juan Luis Munoz Marin Intl

Thu 2/26

2:15 pm-11:12 pm

1 stop12h 57m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 2/19

6:05 am-11:58 pm

1 stop13h 53m

San Juan Luis Munoz Marin Intl

Fri 2/27

2:16 pm-10:22 pm

1 stop12h 06m

$363

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Fri 1/30

5:00 am-11:57 pm

2 stops14h 57m

Aguadilla Borinquen

Mon 2/16

1:09 am-11:14 am

1 stop14h 05m

$404

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 2/1

6:22 pm-10:48 am

2 stops12h 26m

San Juan Luis Munoz Marin Intl

Thu 3/12

3:03 pm-12:50 am

1 stop12h 47m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 3/6

10:55 pm-9:33 pm

1 stop18h 38m

San Juan Luis Munoz Marin Intl

Fri 3/13

3:36 pm-11:44 pm

1 stop11h 08m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 60 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, January is the cheapest month in which you can book a flight from State of Washington to Puerto Rico (average of $231). 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.

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 December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from State of Washington to Puerto Rico at noon. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from State of Washington to Puerto Rico?

Use this chart to determine the cheapest time to fly round-trip from Washington to Puerto Rico. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their State of Washington to Puerto Rico flight should consider departing on Sunday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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, Delta, and American Airlines can get you from State of Washington to Puerto Rico in just under 11h 51m. Your travel time can differ by up to 2h 02m. 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 American Airlines, which is currently one of the cheapest options available, starting at $168. JetBlue flights start at $170 while deals on United Airlines start at $202 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, January is the cheapest month in which you can book a flight from State of Washington to Puerto Rico (average of $231). 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

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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.
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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$175Average$476FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$214Average$341FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$327Average$544FlexibilityNo cancel feeOn-time62%
DeltaCheapest$357Average$553FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$363Average$706FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$363Average$683FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$494Average$690FlexibilityNo cancel feeOn-time63%
Sun Country AirCheapest$544Average$828FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$678Average$880FlexibilityNo cancel feeOn-time75%

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