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$72+ Cheap flights from Washington, D.C. (WAS) to San Juan

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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SJU
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to San Juan 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 San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to San Juan (PR1). 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 July 3, 2025.

Round-trip from

$154
(Booking.com)

One-way from

$72
(Priceline)

Popular in

December

Cheapest in

March

Average price

$324
From Washington, D.C. (WAS) to San Juan
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One-way flight from Washington, D.C. (WAS) to San Juan
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Highest demand for flights based on searches. 12% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Washington, D.C. to San Juan

Cheapest flights from Washington, D.C. to San Juan
Explore the most affordable flight options available from Washington, D.C. to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Booking.com deal was found by Cheapflights users on 7/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/206:25 amBWI - SJU
1 stop14h 44mSpirit Airlines
Tue 7/291:21 amSJU - BWI
Nonstop3h 59mSpirit Airlines
Deal found 7/2$154
This Priceline deal was found by Cheapflights users on 7/2. 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 8/3011:44 amBWI - SJU
1 stop21h 15mFrontier
Sat 9/63:16 pmSJU - BWI
1 stop8h 50mFrontier
Deal found 7/2$156
This Priceline deal was found by Cheapflights users on 7/3. 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 7/152:59 pmBWI - SJU
1 stop11h 40mMultiple Airlines
Fri 7/181:21 amSJU - BWI
Nonstop3h 59mMultiple Airlines
Deal found 7/3$167
This Priceline deal was found by Cheapflights users on 7/3. 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 7/57:25 pmIAD - SJU
1 stop28h 34mFrontier
Wed 7/97:34 pmSJU - IAD
1 stop22h 54mFrontier
Deal found 7/3$169
This Southwest deal was found by Cheapflights users on 7/2. 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 7/156:55 amDCA - SJU
1 stop6h 10mSouthwest
Thu 7/247:00 amSJU - DCA
1 stop12h 30mSouthwest
Deal found 7/2$170
This American Airlines deal was found by Cheapflights users on 7/2. 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 7/214:50 pmDCA - SJU
1 stop6h 00mAmerican Airlines
Wed 7/306:03 amSJU - DCA
1 stop6h 34mAmerican Airlines
Deal found 7/2$171
This American Airlines deal was found by Cheapflights users on 7/2. 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 7/151:06 pmIAD - SJU
1 stop11h 21mAmerican Airlines
Fri 7/187:54 amSJU - IAD
1 stop16h 04mAmerican Airlines
Deal found 7/2$175
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Fri 7/116:01 amBWI - SJU
1 stop15h 54mAmerican Airlines
Wed 7/1611:59 amSJU - BWI
1 stop12h 18mAmerican Airlines
Deal found 7/2$175
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 7/811:05 amDCA - SJU
1 stop9h 33mUnited Airlines
Thu 7/101:10 amSJU - DCA
1 stop9h 17mUnited Airlines
Deal found 7/1$182
This United Airlines deal was found by Cheapflights users on 7/2. 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 8/246:35 amIAD - SJU
1 stop8h 09mUnited Airlines
Fri 8/293:56 pmSJU - IAD
1 stop8h 36mUnited Airlines
Deal found 7/2$185
This JetBlue deal was found by Cheapflights users on 7/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/178:00 amDCA - SJU
Nonstop3h 59mJetBlue
Sun 7/206:05 pmSJU - DCA
Nonstop3h 54mJetBlue
Deal found 7/1$186
This Delta deal was found by Cheapflights users on 7/2. 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 11/196:05 amDCA - SJU
1 stop5h 53mDelta
Wed 12/31:50 pmSJU - DCA
1 stop7h 24mDelta
Deal found 7/2$250

Cheapflights Fare Finder

Customize your flight search to find flights from Washington, D.C. to San Juan 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 July 3, 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Juan that are best for you.

Fly from

Washington, D.C.

Fly to

San Juan

Route

Depart

Return

Price

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sun 7/20

6:25 am-9:09 pm

1 stop14h 44m

San Juan Luis Munoz Marin Intl

Tue 7/29

1:21 am-5:20 am

Nonstop3h 59m

$154

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 8/30

11:44 am-8:59 am

1 stop21h 15m

San Juan Luis Munoz Marin Intl

Sat 9/6

3:16 pm-12:06 am

1 stop8h 50m

$156

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Tue 7/15

2:59 pm-2:39 am

1 stop11h 40m

San Juan Luis Munoz Marin Intl

Fri 7/18

1:21 am-5:20 am

Nonstop3h 59m

$167

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 8/23

11:11 am-3:08 pm

Nonstop3h 57m

San Juan Luis Munoz Marin Intl

Sat 8/30

6:30 am-10:26 am

Nonstop3h 56m

$169

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Tue 7/15

6:55 am-1:05 pm

1 stop6h 10m

San Juan Luis Munoz Marin Intl

Thu 7/24

7:00 am-7:30 pm

1 stop12h 30m

$170

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 7/21

4:50 pm-10:50 pm

1 stop6h 00m

San Juan Luis Munoz Marin Intl

Wed 7/30

6:03 am-12:37 pm

1 stop6h 34m

$171

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 7/15

1:06 pm-12:27 am

1 stop11h 21m

San Juan Luis Munoz Marin Intl

Fri 7/18

7:54 am-11:58 pm

1 stop16h 04m

$175

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Fri 7/11

6:01 am-9:55 pm

1 stop15h 54m

San Juan Luis Munoz Marin Intl

Wed 7/16

11:59 am-12:17 am

1 stop12h 18m

$175

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Tue 7/8

11:05 am-8:38 pm

1 stop9h 33m

San Juan Luis Munoz Marin Intl

Thu 7/10

1:10 am-10:27 am

1 stop9h 17m

$182

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 8/24

6:35 am-2:44 pm

1 stop8h 09m

San Juan Luis Munoz Marin Intl

Fri 8/29

3:56 pm-12:32 am

1 stop8h 36m

$185

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 25 results
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Best time to book a flight from Washington, D.C. to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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

How far ahead should I book a flight from Washington, D.C. to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to San Juan. Price data was last updated on June 27, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. to San Juan, you should look to book at least 51 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. to San Juan?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to San Juan (average of $254). Flying from Washington, D.C. to San Juan 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 San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to San Juan 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?

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

Travelers seeking maximum savings on their Washington, D.C. to San Juan 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

Explore weekly flight availability from Washington, D.C. to San Juan. 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 July 3, 2025.

The most flights from WAS to PR1 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 (2 on average).

How much does it cost to fly round-trip from Washington, D.C. to San Juan?

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated July 3, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to San Juan, such as Southwest, Delta, and Avelo Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

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.
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

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.
Delta
8.0
Very good
7,982 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

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.
Avelo Airlines
7.4
Good
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

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.
United Airlines
7.4
Good
8,861 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

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.
JetBlue
7.3
Good
2,916 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

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 San Juan. 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 round-trip?

    Our cheapest airline available from Washington, D.C. to San Juan is Spirit Airlines. Our recent data shows that you can find tickets from as low as $154 on this airline. Additional options worth looking into are Frontier and Southwest, starting at $156 and $170 round-trip. Spirit Airlines is currently priced 55% below the average price you’ll pay for this route.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $72. Spirit Airlines flights start at $75 while deals on American Airlines start at $83 one-way.

  • What are the most popular routes from Washington, D.C. to San Juan?

    The most popular flight routes from Washington, D.C. to San Juan are Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl, Baltimore/Washington - San Juan Luis Munoz Marin Intl and Washington, D.C. Reagan-National - San Juan Luis Munoz Marin Intl.

  • What are the most reliable airlines from Washington, D.C. to San Juan?

    The top 3 most reliable airlines when flying from Washington, D.C. to San Juan are Air Canada (81%), United Airlines (81%) and Brussels Airlines (67%).

  • What are the cheapest flights from Washington, D.C. to San Juan?

    The cheapest flight price from Washington, D.C. to San Juan is $79. On average you can expect to pay $717. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $156.

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

    Washington, D.C. to San Juan flights have a layover in Orlando most of the time.

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

    Most Orlando visitors opt to spend their time experiencing Walt Disney World Resort, Universal Orlando Resort, and International Drive. Walt Disney World Resort, Universal Orlando Resort, and International Drive are located about 16.2 mi, 10.2 mi, and 9.9 mi, respectively from Orlando. Travelers in need of a car in Orlando can rent one for about $24 per day.

  • Where are the least popular layover locations for Washington, D.C. to San Juan flights?

    Flights departing from Washington, D.C. and landing in San Juan layover in Fort Lauderdale least frequently.

  • Can I find deals for flights from Washington, D.C. to San Juan that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to San Juan?

    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 San Juan.

  • Can I find deals for business class flights from Washington, D.C. to San Juan?

    Yes. Cheapflights offers flight deals from Washington, D.C. to San Juan 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?

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

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Top 7 airlines flying from Washington, D.C. to San Juan

Discover the top 7 airlines that operate flights from Washington, D.C. to San Juan. 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$83Average$237FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$98Average$269FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$203Average$395FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$214Average$456FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$222Average$490FlexibilityNo cancel feeOn-time71%
DeltaCheapest$234Average$393FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$322Average$469FlexibilityNo cancel feeOn-time63%

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