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$66+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SJU
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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The best prices from Washington, D.C. to San Juan are usually found in September or May, booked 15 days in advance, depart on a Tuesday or Wednesday 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 January 21, 2025.

Round-trip from

$128
(Kiwi.com)

One-way from

$66
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$339
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. 10% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in January 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 January 21, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/85:47 pmBWI - SJU
1 stop7h 12mMultiple Airlines
Wed 2/126:25 pmSJU - BWI
Nonstop4h 09mMultiple Airlines
Deal found 1/20$127
This eDestinos deal was found by Cheapflights users on 1/21. 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.
Sat 2/225:36 pmBWI - SJU
1 stop6h 30mFrontier
Fri 2/283:54 amSJU - BWI
1 stop12h 21mFrontier
Deal found 1/21$129
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/37:00 pmBWI - SJU
Nonstop3h 42mSpirit Airlines
Tue 3/41:30 amSJU - BWI
Nonstop4h 12mSpirit Airlines
Deal found 1/21$134
This Booking.com deal was found by Cheapflights users on 1/20. 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.
Fri 2/216:03 pmIAD - SJU
1 stop7h 51mFrontier
Mon 2/248:43 pmSJU - IAD
1 stop21h 12mFrontier
Deal found 1/20$180
This United Airlines deal was found by Cheapflights users on 1/20. 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 2/105:35 pmIAD - SJU
Nonstop3h 47mUnited Airlines
Thu 2/138:10 amSJU - IAD
Nonstop4h 00mUnited Airlines
Deal found 1/20$184
This United Airlines deal was found by Cheapflights users on 1/21. 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 2/245:00 pmDCA - SJU
1 stop6h 36mUnited Airlines
Wed 2/262:05 amSJU - DCA
1 stop7h 20mUnited Airlines
Deal found 1/21$192
This American Airlines deal was found by Cheapflights users on 1/21. 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 3/33:59 pmDCA - SJU
1 stop6h 56mAmerican Airlines
Tue 3/115:00 amSJU - DCA
1 stop6h 29mAmerican Airlines
Deal found 1/21$194
This JetBlue deal was found by Cheapflights users on 1/20. 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 1/278:00 amDCA - SJU
Nonstop3h 40mJetBlue
Thu 1/306:10 pmSJU - DCA
Nonstop4h 06mJetBlue
Deal found 1/20$250
This American Airlines deal was found by Cheapflights users on 1/20. 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 2/49:11 amIAD - SJU
1 stop11h 56mAmerican Airlines
Fri 2/74:40 pmSJU - IAD
1 stop17h 01mAmerican Airlines
Deal found 1/20$258
This Delta deal was found by Cheapflights users on 1/20. 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.
Sat 1/251:40 pmIAD - SJU
1 stop6h 26mDelta
Thu 1/303:23 pmSJU - IAD
1 stop8h 53mDelta
Deal found 1/20$297
This Delta deal was found by Cheapflights users on 1/20. 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.
Fri 1/249:00 amDCA - SJU
1 stop11h 06mDelta
Wed 1/294:15 pmSJU - DCA
1 stop7h 20mDelta
Deal found 1/20$297
This Southwest deal was found by Cheapflights users on 1/20. 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 3/47:25 amDCA - SJU
1 stop7h 00mSouthwest
Tue 3/115:35 amSJU - DCA
2 stops9h 20mSouthwest
Deal found 1/20$319

Find flights from Washington, D.C. to San Juan within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 3/1

4:10 pm-12:47 am

1 stop7h 37m

San Juan Luis Munoz Marin Intl

Wed 3/5

4:12 pm-7:22 pm

Nonstop4h 10m

$128

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 2/22

5:36 pm-1:06 am

1 stop6h 30m

San Juan Luis Munoz Marin Intl

Fri 2/28

3:54 am-3:15 pm

1 stop12h 21m

$129

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 2/24

7:00 pm-11:42 pm

Nonstop3h 42m

San Juan Luis Munoz Marin Intl

Thu 2/27

6:25 pm-9:34 pm

Nonstop4h 09m

$134

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Fri 2/21

6:03 pm-2:54 am

1 stop7h 51m

San Juan Luis Munoz Marin Intl

Mon 2/24

8:43 pm-4:55 pm

1 stop21h 12m

$180

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 2/10

5:35 pm-10:22 pm

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Thu 2/13

8:10 am-11:10 am

Nonstop4h 00m

$184

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 3/1

5:00 pm-12:36 am

1 stop6h 36m

San Juan Luis Munoz Marin Intl

Tue 3/4

2:05 am-9:54 am

1 stop8h 49m

$192

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 3/3

3:59 pm-11:55 pm

1 stop6h 56m

San Juan Luis Munoz Marin Intl

Tue 3/11

5:00 am-11:29 am

1 stop6h 29m

$194

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 2/3

8:00 am-12:40 pm

Nonstop3h 40m

San Juan Luis Munoz Marin Intl

Thu 2/6

6:10 pm-9:16 pm

Nonstop4h 06m

$250

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 2/4

9:11 am-10:07 pm

1 stop11h 56m

San Juan Luis Munoz Marin Intl

Fri 2/7

4:40 pm-8:41 am

1 stop17h 01m

$258

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 2/1

12:05 pm-11:59 pm

1 stop10h 54m

San Juan Luis Munoz Marin Intl

Thu 2/6

3:23 pm-11:13 pm

1 stop8h 50m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 34 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.

Travel insights for flights from Washington, D.C. to San Juan

Get recent, data-driven insights about flights from Washington, D.C. to San Juan including ideal travel times, pricing trends, and more.

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 January 17, 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 15 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 March is currently the most expensive (average of $378). 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 January 21, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to San Juan in the evening. If you’re flexible enough to do this you can expect to save up to 43% on your trip compared to booking a flight in the morning.

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 Wednesday evenings when fares are most often at their lowest. Friday mornings 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 January 21, 2025.

The most flights from WAS to PR1 are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan 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 when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, 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 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 January 21, 2025.
See what other customers who have flown with Spirit Airlines, United Airlines and Frontier from Washington, D.C. to San Juan have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,662 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,200 reviews
Southwest
8.1
Very good
4,662 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,984 reviews
Southwest
8.1
Very good
4,662 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 Frontier. Our recent data shows that you can find tickets from as low as $129 on this airline. Additional options worth looking into are Spirit Airlines and United Airlines, starting at $134 and $184 round-trip. Frontier is currently priced 63% 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $66. Frontier flights start at $68 while deals on United Airlines start at $125 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 Frontier (88%), Southwest (74%) and Spirit 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 $71. On average you can expect to pay $269. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $134.

  • 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. Washington, D.C. to San Juan flights stop in Boston the next most.

  • 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, 10.3 mi, and 9.9 mi, respectively from Orlando. Travelers in need of a car in Orlando can rent one for about $31 per day.

  • What are some popular points of interest to see during a layover in Boston?

    Boston travelers tend to visit Fenway Park, Boston Common, and Copley Square more than any other notable places. Fenway Park, Boston Common, and Copley Square are located about 4.7 mi, 3.0 mi, and 3.6 mi, respectively from Boston Logan Intl. Travelers can book a car rental at Boston Logan Intl for about $60 per day to make their sightseeing more efficient.

  • 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 March is currently the most expensive (average of $378). 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$260FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$96Average$251FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$108Average$370FlexibilityNo cancel feeOn-time62%
DeltaCheapest$234Average$398FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$261Average$493FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$266Average$622FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$311Average$501FlexibilityNo cancel feeOn-time63%
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