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$97+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SJU
Feb 1 — Feb 81
Sun 2/1
Sun 2/8
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to San Juan are usually found in July or March, booked 51 days in advance, depart on a Tuesday or Sunday and return on a Thursday

Cheap 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 2, 2026.

This American Airlines deal was found by Cheapflights users on 12/31. 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 12/318:30 amDCA - SJU
1 stop8h 37mAmerican Airlines
Tue 1/134:49 pmSJU - DCA
1 stop7h 36mAmerican Airlines
Deal found 12/31$349
This Frontier deal was found by Cheapflights users on 12/31. 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.
Wed 12/318:18 pmBWI - SJU
Nonstop3h 48mFrontier
Wed 1/79:19 pmSJU - BWI
1 stop11h 02mFrontier
Deal found 12/31$351
This United Airlines deal was found by Cheapflights users on 12/31. 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 12/316:04 pmBWI - SJU
1 stop11h 07mUnited Airlines
Mon 1/122:05 amSJU - BWI
2 stops13h 06mUnited Airlines
Deal found 12/31$359
This United Airlines deal was found by Cheapflights users on 12/31. 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 12/3110:30 amDCA - SJU
2 stops13h 06mUnited Airlines
Mon 1/122:05 amSJU - DCA
2 stops14h 27mUnited Airlines
Deal found 12/31$359
This Priceline deal was found by Cheapflights users on 12/31. 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.
Wed 12/318:18 pmBWI - SJU
Nonstop3h 48mFrontier
Thu 1/810:47 pmSJU - BWI
1 stop9h 57mFrontier
Deal found 12/31$361
This CheapOair deal was found by Cheapflights users on 12/31. 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 12/318:18 pmBWI - SJU
Nonstop3h 48mFrontier
Tue 1/138:57 amSJU - BWI
1 stop14h 39mFrontier
Deal found 12/31$362
This Priceline deal was found by Cheapflights users on 12/31. 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.
Wed 12/318:45 amBWI - SJU
1 stop12h 20mSpirit Airlines
Tue 1/134:40 pmSJU - BWI
1 stop7h 56mSpirit Airlines
Deal found 12/31$368
This Expedia deal was found by Cheapflights users on 12/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:00 pmDCA - SJU
1 stop9h 59mJetBlue
Tue 1/136:30 pmSJU - DCA
Nonstop4h 02mJetBlue
Deal found 12/31$442
This United Airlines deal was found by Cheapflights users on 12/31. 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 12/315:31 pmIAD - SJU
2 stops11h 40mUnited Airlines
Tue 1/137:45 amSJU - IAD
2 stops14h 28mUnited Airlines
Deal found 12/31$449
This Delta deal was found by Cheapflights users on 12/31. 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 12/315:06 pmIAD - SJU
1 stop8h 21mDelta
Thu 1/82:15 pmSJU - IAD
1 stop7h 22mDelta
Deal found 12/31$467
This American Airlines deal was found by Cheapflights users on 12/30. 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 12/311:44 pmDCA - SJU
1 stop7h 07mAmerican Airlines
Thu 1/86:00 amSJU - DCA
1 stop7h 44mAmerican Airlines
Deal found 12/30$471
This Southwest deal was found by Cheapflights users on 12/31. 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 12/312:45 pmDCA - SJU
2 stops18h 40mSouthwest
Thu 1/84:05 pmSJU - DCA
1 stop7h 50mSouthwest
Deal found 12/31$486

Find 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 2, 2026.

Round-trip from

$173
(Kiwi.com)

One-way from

$97
(Mytrip)

Popular in

December

Cheapest in

July

Average price

$339
From Washington, D.C. (WAS) to San Juan
Search Deals
One-way flight from Washington, D.C. (WAS) to San Juan
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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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 January 2, 2026.
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

Mon 2/23

11:30 am-11:09 pm

1 stop10h 39m

San Juan Luis Munoz Marin Intl

Fri 2/27

6:00 am-11:17 am

1 stop6h 17m

$199

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 1/10

1:45 pm-12:37 am

1 stop9h 52m

San Juan Luis Munoz Marin Intl

Wed 1/14

4:35 pm-12:31 am

1 stop8h 56m

$202

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Fri 1/30

7:59 pm-6:11 am

1 stop9h 12m

San Juan Luis Munoz Marin Intl

Fri 2/6

2:05 am-9:38 am

1 stop8h 33m

$207

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 1/20

3:42 pm-11:45 pm

1 stop7h 03m

San Juan Luis Munoz Marin Intl

Wed 1/28

6:27 pm-12:24 am

1 stop6h 57m

$215

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 1/18

12:37 pm-11:45 pm

1 stop10h 08m

San Juan Luis Munoz Marin Intl

Thu 1/22

7:30 am-2:45 pm

1 stop8h 15m

$215

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 1/20

12:23 pm-11:57 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

Fri 1/23

6:09 am-11:44 am

1 stop6h 35m

$215

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Fri 2/6

6:00 am-4:50 pm

1 stop9h 50m

San Juan Luis Munoz Marin Intl

Tue 2/10

3:55 pm-9:34 pm

1 stop6h 39m

$215

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 1/24

3:25 pm-10:55 pm

1 stop6h 30m

San Juan Luis Munoz Marin Intl

Fri 1/30

6:30 pm-9:32 pm

Nonstop4h 02m

$225

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 1/12

6:59 am-5:17 pm

1 stop9h 18m

San Juan Luis Munoz Marin Intl

Thu 1/15

3:55 pm-10:33 pm

1 stop7h 38m

$233

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 1/19

6:03 am-4:36 pm

1 stop9h 33m

San Juan Luis Munoz Marin Intl

Sat 1/24

8:10 am-11:15 am

Nonstop4h 05m

$245

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 60 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 December 26, 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, June is the cheapest month in which you can book a flight from Washington, D.C. to San Juan (average of $86). Flying from Washington, D.C. to San Juan in December is currently the most expensive (average of $167). 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 2, 2026.

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 23% 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 27, 2025.

Travelers seeking maximum savings on their Washington, D.C. to San Juan flight should consider departing on Wednesday at noon when fares are most often at their lowest. Wednesday 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 January 2, 2026.

The most flights from WAS to PR1 are scheduled on a Monday (6 on average). You will have fewer flight options on Tuesday, 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?

How often are flights from Washington, D.C. to San Juan delayed?

About 18% of weekly flights between Washington, D.C. and San Juan have experienced delays in the past year, with the average delay time being 122 minutes.

What is the most punctual flight time for Washington, D.C. to San Juan flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to San Juan flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.

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 2, 2026.
Read through reviews of airlines operating flights from Washington, D.C. to San Juan, such as Southwest, United Airlines, and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,252 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,134 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,905 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,257 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,068 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • How long is the flight from Washington, D.C. to San Juan?

    Departing from Washington, D.C. to San Juan will take you 9h 12m. There are 1557 mi between Washington, D.C. and San Juan. This flight may include one or multiple stops.

  • 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 $85 on this airline. Additional options worth looking into are Spirit Airlines and Delta, starting at $88 and $138 round-trip. Frontier is currently priced 74% 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 $64. Southwest flights start at $82 while deals on JetBlue start at $96 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 (72%), United Airlines (72%) and Brussels Airlines (58%).

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

    The cheapest flight price from Washington, D.C. to San Juan is $70. On average you can expect to pay $647. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $131.

  • 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 Universal Orlando Resort, Walt Disney World Resort, and International Drive. Universal Orlando Resort, Walt Disney World Resort, and International Drive are located about 10.2 mi, 16.2 mi, and 9.9 mi, respectively from Orlando. Travelers in need of a car in Orlando can rent one for about $31 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, June is the cheapest month in which you can book a flight from Washington, D.C. to San Juan (average of $86). Flying from Washington, D.C. to San Juan in December is currently the most expensive (average of $167). 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 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$335FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$103Average$271FlexibilityNo cancel feeOn-time65%
DeltaCheapest$142Average$353FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$161Average$402FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$199Average$435FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$219Average$429FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$220Average$460FlexibilityNo cancel feeOn-time63%

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