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$156+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SJU
Aug 17 — Aug 241
Mon 8/17
Mon 8/24
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to San Juan are usually found in October or February, booked 70 days in advance, depart on a Tuesday or Sunday and return on a Friday

Cheap 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 July 18, 2026.

This Southwest deal was found by Cheapflights users on 7/17. 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 8/196:55 am
DCA
-
SJU
1 stop12h 05m
Southwest
Wed 8/268:20 am
SJU
-
DCA
2 stops10h 05m
Southwest
Deal found 7/17$306
This Cheapflightsfares deal was found by Cheapflights users on 7/17. 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.
Wed 8/268:00 am
DCA
-
SJU
Nonstop3h 59m
JetBlue
Wed 8/265:39 pm
SJU
-
DCA
Nonstop3h 52m
JetBlue
Deal found 7/17$309
This Southwest deal was found by Cheapflights users on 7/13. 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 9/16:55 am
DCA
-
SJU
1 stop12h 05m
Southwest
Sun 9/66:30 am
SJU
-
DCA
2 stops8h 10m
Southwest
Deal found 7/13$311
This Super.com deal was found by Cheapflights users on 7/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:00 am
DCA
-
SJU
Nonstop3h 50m
JetBlue
Sun 10/45:55 pm
SJU
-
DCA
Nonstop3h 51m
JetBlue
Deal found 7/15$314
This Super.com deal was found by Cheapflights users on 7/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:00 am
DCA
-
SJU
Nonstop3h 50m
JetBlue
Fri 10/95:50 pm
SJU
-
DCA
Nonstop3h 51m
JetBlue
Deal found 7/14$315
This Southwest deal was found by Cheapflights users on 7/16. 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.
Sat 8/2211:45 am
DCA
-
SJU
1 stop6h 30m
Southwest
Mon 8/315:45 pm
SJU
-
DCA
1 stop6h 10m
Southwest
Deal found 7/16$316
This JetBlue deal was found by Cheapflights users on 7/15. 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.
Fri 8/218:00 am
DCA
-
SJU
Nonstop3h 59m
JetBlue
Sat 8/296:07 pm
SJU
-
DCA
Nonstop3h 52m
JetBlue
Deal found 7/15$317
This JetBlue deal was found by Cheapflights users on 7/13. 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 10/136:00 am
DCA
-
SJU
1 stop7h 25m
JetBlue
Fri 10/165:50 pm
SJU
-
DCA
Nonstop3h 51m
JetBlue
Deal found 7/13$319
This Southwest deal was found by Cheapflights users on 7/13. 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.
Sat 9/511:55 am
DCA
-
SJU
1 stop6h 10m
Southwest
Thu 9/105:00 am
SJU
-
DCA
2 stops9h 40m
Southwest
Deal found 7/13$321
This JetBlue deal was found by Cheapflights users on 7/13. 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.
Sun 10/118:00 am
DCA
-
SJU
Nonstop3h 50m
JetBlue
Sat 10/175:50 pm
SJU
-
DCA
Nonstop3h 51m
JetBlue
Deal found 7/13$322
This Super.com deal was found by Cheapflights users on 7/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
DCA
-
SJU
Nonstop3h 59m
JetBlue
Tue 8/255:39 pm
SJU
-
DCA
Nonstop3h 52m
JetBlue
Deal found 7/14$323

Find 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 July 18, 2026.

Round-trip from

$306
(Southwest)

One-way from

$156
(Super.com)

Popular in

June

Cheapest in

October

Average price

$489
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. 11% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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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 July 18, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Thu 9/24

6:00 am-4:55 pm

1 stop10h 55m

San Juan Luis Munoz Marin Intl

Sun 9/27

6:00 am-6:50 pm

1 stop12h 50m

$316

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Fri 8/28

12:55 pm-10:10 pm

1 stop9h 15m

San Juan Luis Munoz Marin Intl

Mon 8/31

5:45 pm-11:55 pm

1 stop6h 10m

$316
Quickest round-trip

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sun 10/11

8:00 am-11:50 am

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Thu 10/22

4:30 pm-11:40 pm

1 stop7h 10m

$319

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Wed 8/26

12:50 pm-9:05 pm

1 stop8h 15m

San Juan Luis Munoz Marin Intl

Tue 9/1

1:20 pm-11:05 pm

2 stops9h 45m

$324

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Fri 10/16

6:30 am-2:44 pm

1 stop8h 14m

San Juan Luis Munoz Marin Intl

Sat 10/24

1:05 am-8:19 am

1 stop7h 14m

$326

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Thu 8/20

1:00 pm-11:05 pm

2 stops10h 05m

San Juan Luis Munoz Marin Intl

Wed 8/26

5:15 am-4:05 pm

1 stop10h 50m

$335

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 8/22

8:15 am-7:20 pm

2 stops11h 05m

San Juan Luis Munoz Marin Intl

Fri 8/28

6:30 am-2:40 pm

2 stops8h 10m

$341

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 8/22

8:15 am-7:20 pm

2 stops11h 05m

San Juan Luis Munoz Marin Intl

Mon 8/24

5:45 pm-11:55 pm

1 stop6h 10m

$341

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Wed 8/19

11:55 am-10:00 pm

2 stops10h 05m

San Juan Luis Munoz Marin Intl

Tue 8/25

8:20 am-6:25 pm

2 stops10h 05m

$342

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 8/15

8:15 am-7:20 pm

2 stops11h 05m

San Juan Luis Munoz Marin Intl

Sun 8/30

6:00 am-6:50 pm

1 stop12h 50m

$366

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 24 resultsSorted by cheapest first
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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

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Juan (average of $290). Flying from Washington, D.C. Reagan-National Airport to San Juan in June is currently the most expensive (average of $532). 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 July 18, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to San Juan as you normally would.

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 July 18, 2026.

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).

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

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

About 20% of weekly flights between Washington, D.C. and San Juan have experienced delays in the past year, with the average delay time being 150 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 morning tend to experience delays more often.

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

Sunday tends to have the lowest number of delays on this route, whereas Friday 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, JetBlue have had the lowest number of delays on this route, with just 20% of flights being delayed.

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

The best time to book flights from Washington, D.C. Reagan-National Airport to San Juan is 69 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.

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 18, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican 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
4,243 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Southwest
8.0
Very good
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
United Airlines
7.4
Good
10,006 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
American Airlines
7.1
Good
11,829 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
JetBlue
7.1
Good
3,012 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Frontier
5.6
Fair
2,794 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.

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 50m. Airlines will cover a distance of 1557 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Frontier, at $103, 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 Delta and Southwest. Users have found that Frontier is 75% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $68. Southwest flights start at $112 while deals on JetBlue start at $120 one-way.

  • 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 $388, our data shows the cheapest flight currently is $178. When looking at the most popular route, (Washington, D.C. Reagan-National - San Juan Luis Munoz Marin Intl), you can expect to pay $302 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, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Juan (average of $290). Flying from Washington, D.C. Reagan-National Airport to San Juan in June is currently the most expensive (average of $532). 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 6 airlines flying from Reagan-National to San Juan

Discover the top 6 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 July 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$103Average$403FlexibilityNo cancel feeOn-time62%
DeltaCheapest$142Average$462FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$220Average$393FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$228Average$447FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$230Average$406FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$255Average$338FlexibilityNo cancel feeOn-time71%

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