Luis Munoz Marin Intl

$76+ Cheap flights from Washington, D.C. (WAS) to Luis Munoz Marin Intl (SJU)

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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SJU
Jun 17 — Jun 241
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. to San Juan Luis Munoz Marin Intl are usually found in March or May, booked 51 days in advance, depart on a Tuesday or Monday and return on a Thursday

Cheap flight deals from Washington, D.C. to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Luis Munoz Marin Intl (SJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$160
(SmartFares)

One-way from

$76
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$371

Good round-trip deal

$225 or less

Good one-way deal

$113 or less
From Washington, D.C. (WAS) to San Juan Luis Munoz Marin Intl
One-way flight from Washington, D.C. (WAS) to San Juan Luis Munoz Marin Intl
Highest demand for flights based on searches. 11% potential increase in price ($46 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Washington, D.C. (WAS) to San Juan Luis Munoz Marin Intl.
Price to beat on a one-way flight from Washington, D.C. (WAS) to San Juan Luis Munoz Marin Intl.

Find flight deals from Washington, D.C. to Luis Munoz Marin Intl

Cheapest flights from Washington, D.C. to Luis Munoz Marin Intl
Explore the most affordable flight options available from Washington, D.C. to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This SmartFares deal was found by Cheapflights users on 6/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/126:48 amBWI - SJU
Nonstop3h 41mSpirit Airlines
Mon 7/141:21 amSJU - BWI
Nonstop3h 59mSpirit Airlines
Deal found 6/11$160
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 9/154:32 pmBWI - SJU
1 stop7h 22mMultiple Airlines
Mon 9/2212:55 pmSJU - BWI
Nonstop3h 58mMultiple Airlines
Deal found 6/11$172
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 10/28:06 pmIAD - SJU
1 stop6h 28mFrontier
Sun 10/53:21 pmSJU - IAD
1 stop8h 45mFrontier
Deal found 6/11$176
This Priceline deal was found by Cheapflights users on 6/11. 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.
Tue 9/22:53 pmBWI - SJU
1 stop28h 15mFrontier
Thu 9/43:40 amSJU - BWI
1 stop11h 50mFrontier
Deal found 6/11$179
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/127:59 pmDCA - SJU
1 stop9h 31mUnited Airlines
Thu 8/141:05 amSJU - DCA
1 stop7h 17mUnited Airlines
Deal found 6/10$181
This American Airlines deal was found by Cheapflights users on 6/11. 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 6/141:40 pmDCA - SJU
1 stop9h 45mAmerican Airlines
Thu 6/1912:59 amSJU - DCA
1 stop10h 05mAmerican Airlines
Deal found 6/11$190
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Sun 6/225:28 pmIAD - SJU
Nonstop3h 56mUnited Airlines
Tue 6/241:05 amSJU - IAD
1 stop6h 14mUnited Airlines
Deal found 6/12$191
This Southwest deal was found by Cheapflights users on 6/10. 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 7/97:25 amDCA - SJU
1 stop6h 25mSouthwest
Tue 7/152:45 pmSJU - DCA
1 stop8h 00mSouthwest
Deal found 6/10$220
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 7/83:59 pmDCA - SJU
1 stop6h 24mDelta
Sat 7/127:00 amSJU - DCA
1 stop11h 14mDelta
Deal found 6/10$255
This JetBlue deal was found by Cheapflights users on 6/10. 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.
Mon 8/188:00 amDCA - SJU
Nonstop3h 57mJetBlue
Thu 8/211:10 pmSJU - DCA
1 stop7h 49mJetBlue
Deal found 6/10$267

Cheapflights Fare Finder

Customize your flight search to find flights from Washington, D.C. to Luis Munoz Marin Intl 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 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Washington, D.C.

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 7/12

6:48 am-10:29 am

Nonstop3h 41m

San Juan Luis Munoz Marin Intl

Mon 7/14

1:21 am-5:20 am

Nonstop3h 59m

$160

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 8/18

7:15 am-2:18 pm

1 stop7h 03m

San Juan Luis Munoz Marin Intl

Wed 8/27

12:55 pm-4:53 pm

Nonstop3h 58m

$174

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 8/25

6:10 am-2:26 pm

1 stop8h 16m

San Juan Luis Munoz Marin Intl

Sat 8/30

3:21 pm-11:58 pm

1 stop8h 37m

$179

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Tue 9/2

2:53 pm-7:08 pm

1 stop28h 15m

San Juan Luis Munoz Marin Intl

Fri 9/5

8:03 am-7:09 pm

1 stop11h 06m

$179

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Tue 8/12

7:59 pm-5:30 am

1 stop9h 31m

San Juan Luis Munoz Marin Intl

Thu 8/14

1:05 am-8:22 am

1 stop7h 17m

$181

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 6/22

5:28 pm-9:24 pm

Nonstop3h 56m

San Juan Luis Munoz Marin Intl

Tue 6/24

1:05 am-7:19 am

1 stop6h 14m

$191

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 7/14

6:05 am-1:26 pm

1 stop7h 21m

San Juan Luis Munoz Marin Intl

Wed 7/23

7:00 am-6:14 pm

1 stop11h 14m

$215

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Wed 7/9

7:25 am-1:50 pm

1 stop6h 25m

San Juan Luis Munoz Marin Intl

Tue 7/15

2:45 pm-10:45 pm

1 stop8h 00m

$220

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 8/18

8:00 am-11:57 am

Nonstop3h 57m

San Juan Luis Munoz Marin Intl

Thu 8/21

1:10 pm-8:59 pm

1 stop7h 49m

$267

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 6/30

11:30 am-11:25 pm

1 stop11h 55m

San Juan Luis Munoz Marin Intl

Fri 7/4

6:05 am-6:24 pm

1 stop12h 19m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 27 results
1
2
3

The best insider tips for Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to San Juan Luis Munoz Marin Intl Airport trip
Airports
IAD

Check-in at IAD can be crowded in the afternoon and evening. Arrive early to navigate the busy check-in area smoothly.

Read more about IADby Ramsey Qubein
SJU

For a quick ride from SJU, rideshare services like Uber are convenient and cashless, but taxis are also readily available.

Read more about SJUby Brandon Schultz
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Brandon Schultz

Brandon Schultz

Expert on SJU

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Best time to book a flight from Washington, D.C. to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Washington, D.C. 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, D.C. to San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Luis Munoz Marin Intl. Price data was last updated on June 9, 2025.

Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport 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 WAS to SJU?

Find hourly flight availability from Washington, D.C. to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport at noon. If you’re flexible enough to do this you can expect to save up to 48% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Luis Munoz Marin Intl. Price data was last updated on June 8, 2025.

Travelers seeking maximum savings on their Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Tuesday 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.

Weekly flight availability from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport

Explore weekly flight availability from Washington, D.C. to Luis Munoz Marin Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from WAS to SJU are scheduled on a Thursday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport 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 San Juan Luis Munoz Marin Intl Airport when rainfall is around 2.2 in.

Temperature in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, 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 Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated June 12, 2025.
See what other customers who have flown with Southwest, Delta and United Airlines from Washington, D.C. to San Juan have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
8.0
Very good

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines flying from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport round-trip?

    Flying on Spirit Airlines is currently your cheapest option to San Juan Luis Munoz Marin Intl Airport, with prices starting at $160. Additional round-trip tickets that might be worth considering are offered by Frontier and United Airlines, with the lowest prices starting at $179 and $181, respectively. Spirit Airlines is 54% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $76. Frontier flights start at $89 while deals on United Airlines start at $103 one-way.

  • What are the most popular routes from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

  • What are the most reliable airlines from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport consider choosing Spirit Airlines (80%), Southwest (80%) or Frontier (30%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

    Looking for the cheapest flight from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport? While on average our users pay $216, our data indicates the cheapest price to be $67. The most popular route (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), is priced around $185.

  • Where are the most common layover locations when flying from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

  • What are some popular things to do or see while on a layover in Orlando?

    Orlando travelers tend to visit Walt Disney World Resort, Universal Orlando Resort, and International Drive more than anywhere else. Walt Disney World Resort, Universal Orlando Resort, and International Drive can be accessed by traveling approximately 16.2 mi, 10.2 mi, and 9.9 mi, respectively from Orlando. Travelers can rent a car at Orlando for an average daily rate of $24 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flights?

  • Can I find deals for flights from Washington, D.C. to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Luis Munoz Marin Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Luis Munoz Marin Intl.

  • Can I find deals for business class flights from Washington, D.C. to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Luis Munoz Marin Intl 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 Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport 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

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Dorado
Fajardo
Luquillo
Rio Grande
Humacao
Bayamón

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, D.C. to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Washington, D.C. to Luis Munoz Marin Intl

Discover the top 7 airlines that operate flights from Washington, D.C. to Luis Munoz Marin Intl. 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$79Average$237FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$113Average$272FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$203Average$388FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$214Average$459FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$222Average$504FlexibilityNo cancel feeOn-time71%
DeltaCheapest$237Average$392FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$324Average$485FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.