HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Juan

$89+ Cheap flights from Reagan-National (DCA) 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SJU
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to San Juan 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. Reagan-National to San Juan are usually found in October or February, booked 50 days in advance, depart on a Monday or Wednesday and return on a Thursday

Find flight deals from Reagan-National to San Juan

Cheapest flights from Reagan-National to San Juan
Explore the most affordable flight options available from Reagan-National to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2025.

This Delta deal was found by Cheapflights users on 11/4. 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 11/1812:39 pmDCA - SJU
1 stop9h 34mDelta
Thu 11/203:20 pmSJU - DCA
1 stop8h 44mDelta
Deal found 11/4$200
This Trip.com deal was found by Cheapflights users on 11/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:00 amDCA - SJU
Nonstop3h 50mJetBlue
Thu 11/206:10 pmSJU - DCA
Nonstop3h 58mJetBlue
Deal found 11/5$204
This JetBlue deal was found by Cheapflights users on 11/5. 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.
Tue 12/98:00 amDCA - SJU
Nonstop3h 51mJetBlue
Tue 12/96:40 pmSJU - DCA
Nonstop3h 57mJetBlue
Deal found 11/5$211
This American Airlines deal was found by Cheapflights users on 11/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:45 amDCA - SJU
1 stop14h 20mAmerican Airlines
Wed 12/1011:00 amSJU - DCA
1 stop8h 59mAmerican Airlines
Deal found 11/3$215
This JetBlue deal was found by Cheapflights users on 11/5. 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.
Tue 12/98:00 amDCA - SJU
Nonstop3h 51mJetBlue
Thu 12/116:40 pmSJU - DCA
Nonstop3h 57mJetBlue
Deal found 11/5$216
This Delta deal was found by Cheapflights users on 11/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/174:10 pmDCA - SJU
1 stop6h 03mDelta
Thu 11/203:20 pmSJU - DCA
1 stop8h 44mDelta
Deal found 11/3$220
This JetBlue deal was found by Cheapflights users on 11/5. 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.
Tue 11/188:00 amDCA - SJU
Nonstop3h 50mJetBlue
Thu 11/206:10 pmSJU - DCA
Nonstop3h 58mJetBlue
Deal found 11/5$221
This Trip.com deal was found by Cheapflights users on 11/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/98:00 amDCA - SJU
Nonstop3h 51mJetBlue
Tue 12/164:55 pmSJU - DCA
1 stop6h 44mJetBlue
Deal found 11/2$224
This Delta deal was found by Cheapflights users on 11/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:59 amDCA - SJU
1 stop6h 18mDelta
Thu 11/132:10 pmSJU - DCA
1 stop9h 46mDelta
Deal found 11/3$225
This American Airlines deal was found by Cheapflights users on 11/5. 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 12/81:45 pmDCA - SJU
1 stop7h 24mAmerican Airlines
Tue 12/96:00 amSJU - DCA
1 stop9h 20mAmerican Airlines
Deal found 11/5$230
This Delta deal was found by Cheapflights users on 11/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:02 amDCA - SJU
1 stop6h 57mDelta
Fri 12/127:19 amSJU - DCA
1 stop11h 40mDelta
Deal found 11/3$235
This Trip.com deal was found by Cheapflights users on 11/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/98:00 amDCA - SJU
Nonstop3h 51mJetBlue
Mon 12/156:40 pmSJU - DCA
Nonstop3h 57mJetBlue
Deal found 11/3$236

Cheap flight deals from Reagan-National to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 November 5, 2025.

Round-trip from

$198
(Trip.com)

One-way from

$89
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$436
From Washington, D.C. Reagan-National to San Juan
Search Deals
One-way flight from Washington, D.C. Reagan-National to San Juan
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 November 5, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to San Juan that are best for you.

Fly from

Reagan-National

Fly to

San Juan

Route

Depart

Return

Price

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 1/26

8:00 am-12:42 pm

Nonstop3h 42m

San Juan Luis Munoz Marin Intl

Thu 1/29

6:45 pm-9:46 pm

Nonstop4h 01m

$216

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Tue 12/9

8:00 am-12:51 pm

Nonstop3h 51m

San Juan Luis Munoz Marin Intl

Wed 12/10

7:00 am-12:17 pm

1 stop6h 17m

$241

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Thu 1/1

7:20 am-6:15 pm

1 stop9h 55m

San Juan Luis Munoz Marin Intl

Tue 1/13

6:45 pm-9:46 pm

Nonstop4h 01m

$278

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Wed 12/10

1:45 pm-11:54 pm

1 stop9h 09m

San Juan Luis Munoz Marin Intl

Fri 12/12

12:30 pm-6:55 pm

1 stop7h 25m

$282

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 11/8

5:00 pm-1:15 am

1 stop7h 15m

San Juan Luis Munoz Marin Intl

Thu 11/13

3:32 pm-11:41 pm

1 stop9h 09m

$295

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Fri 12/12

8:00 am-12:51 pm

Nonstop3h 51m

San Juan Luis Munoz Marin Intl

Sat 12/20

5:24 pm-10:46 pm

1 stop6h 22m

$295

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Tue 1/6

8:00 am-12:42 pm

Nonstop3h 42m

San Juan Luis Munoz Marin Intl

Thu 1/15

5:25 pm-10:31 pm

1 stop6h 06m

$295

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sun 2/1

6:00 am-4:36 pm

1 stop9h 36m

San Juan Luis Munoz Marin Intl

Wed 2/4

2:05 am-8:32 am

1 stop7h 27m

$299

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sun 2/1

12:00 pm-9:00 pm

1 stop8h 00m

San Juan Luis Munoz Marin Intl

Tue 2/3

2:15 pm-11:59 pm

2 stops10h 44m

$299

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 12/6

8:00 am-12:51 pm

Nonstop3h 51m

San Juan Luis Munoz Marin Intl

Sat 12/13

4:55 pm-10:39 pm

1 stop6h 44m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from Reagan-National to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Reagan-National 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. Reagan-National Airport to San Juan

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

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to San Juan. Price data was last updated on October 31, 2025.

The best time to book flights from Washington, D.C. Reagan-National Airport to San Juan is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Juan (average of $196). Flying from Washington, D.C. Reagan-National Airport to San Juan in April is currently the most expensive (average of $264). 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 DCA to SJU?

Find hourly flight availability from Reagan-National 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 November 5, 2025.

When flying from Washington, D.C. Reagan-National Airport to San Juan, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 54% versus a flight in the morning.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to San Juan?

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

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to San Juan flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. Reagan-National Airport to San Juan

Explore weekly flight availability from Reagan-National 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 November 5, 2025.

The most flights from DCA to PR1 are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

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 November 5, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Washington, D.C. Reagan-National Airport to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,004 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,002 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,042 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
JetBlue
7.2
Good
2,907 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National Airport to San Juan?

    Departing from Washington, D.C. Reagan-National Airport to San Juan will take you 3h 42m. Airlines will cover a distance of 1557 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to San Juan round-trip?

    Frontier, at $85, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to San Juan.Alternate airlines to your destination round-trip include Spirit Airlines and Southwest. Users have found that Frontier is 79% cheaper than the other options available to this destination.

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

    While on average a flight from Washington, D.C. Reagan-National Airport to San Juan is generally $310, our data shows the cheapest flight currently is $109. When looking at the most popular route, (Washington, D.C. Reagan-National - San Juan Luis Munoz Marin Intl), you can expect to pay $199 for that flight.

  • Can I find deals for flights from Reagan-National to San Juan that include hotel bookings?

    Yes. In addition to deals on Reagan-National to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to San Juan.

  • Can I find deals for business class flights from Reagan-National to San Juan?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to San Juan?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Juan (average of $196). Flying from Washington, D.C. Reagan-National Airport to San Juan in April is currently the most expensive (average of $264). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Reagan-National to San Juan

Discover the top 7 airlines that operate flights from Reagan-National 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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$85Average$359FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$123Average$281FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$220Average$430FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$220Average$422FlexibilityNo cancel feeOn-time69%
DeltaCheapest$225Average$361FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$238Average$421FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$245Average$378FlexibilityNo cancel feeOn-time71%

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.