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San Juan

$138+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SJU
Jun 20 — Jun 271
Sat 6/20
Sat 6/27
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 Wednesday 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 May 21, 2026.

This American Airlines deal was found by Cheapflights users on 5/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:53 pm
DCA
-
SJU
1 stop8h 31m
American Airlines
Wed 8/266:00 am
SJU
-
DCA
1 stop6h 39m
American Airlines
Deal found 5/17$271
This American Airlines deal was found by Cheapflights users on 5/19. 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.
Sat 8/293:04 pm
DCA
-
SJU
1 stop9h 11m
American Airlines
Wed 9/23:28 pm
SJU
-
DCA
1 stop8h 04m
American Airlines
Deal found 5/19$276
This American Airlines deal was found by Cheapflights users on 5/19. 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 8/191:53 pm
DCA
-
SJU
1 stop8h 31m
American Airlines
Wed 8/263:47 pm
SJU
-
DCA
1 stop6h 04m
American Airlines
Deal found 5/19$281
This Southwest deal was found by Cheapflights users on 5/16. 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.
Tue 8/1112:55 pm
DCA
-
SJU
1 stop9h 05m
Southwest
Wed 8/125:15 am
SJU
-
DCA
1 stop10h 50m
Southwest
Deal found 5/16$296
This American Airlines deal was found by Cheapflights users on 5/19. 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 8/105:00 am
DCA
-
SJU
1 stop9h 51m
American Airlines
Tue 8/181:38 pm
SJU
-
DCA
1 stop7h 21m
American Airlines
Deal found 5/19$301
This American Airlines deal was found by Cheapflights users on 5/20. 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.
Wed 8/126:52 am
DCA
-
SJU
1 stop7h 59m
American Airlines
Tue 8/181:38 pm
SJU
-
DCA
1 stop7h 21m
American Airlines
Deal found 5/20$306
This American Airlines deal was found by Cheapflights users on 5/19. 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 9/18:20 am
DCA
-
SJU
1 stop10h 04m
American Airlines
Tue 9/154:10 pm
SJU
-
DCA
1 stop7h 49m
American Airlines
Deal found 5/19$308
This Southwest deal was found by Cheapflights users on 5/18. 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.
Sun 8/94:35 pm
DCA
-
SJU
1 stop6h 10m
Southwest
Thu 8/136:00 am
SJU
-
DCA
1 stop12h 00m
Southwest
Deal found 5/18$323
This American Airlines deal was found by Cheapflights users on 5/18. 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.
Thu 8/2711:56 am
DCA
-
SJU
1 stop12h 19m
American Airlines
Tue 9/16:00 am
SJU
-
DCA
1 stop6h 39m
American Airlines
Deal found 5/18$326
This American Airlines deal was found by Cheapflights users on 5/18. 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 5/261:39 pm
DCA
-
SJU
1 stop9h 22m
American Airlines
Wed 5/276:20 am
SJU
-
DCA
1 stop10h 40m
American Airlines
Deal found 5/18$331
This Southwest deal was found by Cheapflights users on 5/19. 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 9/56:00 am
DCA
-
SJU
1 stop8h 00m
Southwest
Wed 9/91:45 pm
SJU
-
DCA
2 stops9h 20m
Southwest
Deal found 5/19$333

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 May 21, 2026.

Round-trip from

$271
(American Airlines)

One-way from

$138
(Southwest)

Popular in

August

Cheapest in

October

Average price

$431
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. 4% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 21, 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

Sun 8/9

4:35 pm-10:45 pm

1 stop6h 10m

San Juan Luis Munoz Marin Intl

Thu 8/13

5:00 am-2:40 pm

2 stops9h 40m

$323

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sun 8/9

8:20 am-12:19 pm

Nonstop3h 59m

San Juan Luis Munoz Marin Intl

Mon 8/24

3:01 pm-10:59 pm

1 stop7h 58m

$366
Quickest round-trip

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sun 8/16

8:20 am-12:19 pm

Nonstop3h 59m

San Juan Luis Munoz Marin Intl

Fri 8/28

4:58 pm-10:59 pm

1 stop6h 01m

$366

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Fri 8/7

6:02 am-4:33 pm

1 stop10h 31m

San Juan Luis Munoz Marin Intl

Wed 8/12

2:59 pm-9:45 pm

1 stop6h 46m

$370

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Wed 8/12

6:05 am-4:25 pm

2 stops10h 20m

San Juan Luis Munoz Marin Intl

Tue 8/18

8:20 am-6:25 pm

2 stops10h 05m

$398

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 6/6

8:20 am-12:05 pm

Nonstop3h 45m

San Juan Luis Munoz Marin Intl

Thu 6/11

3:29 pm-10:59 pm

1 stop7h 30m

$399

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 7/4

6:00 am-3:45 pm

2 stops9h 45m

San Juan Luis Munoz Marin Intl

Thu 7/9

7:00 am-6:20 pm

1 stop11h 20m

$411

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Wed 7/8

9:30 am-7:50 pm

2 stops10h 20m

San Juan Luis Munoz Marin Intl

Wed 7/15

6:00 am-12:20 pm

1 stop6h 20m

$458

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 8/3

10:35 am-7:25 pm

2 stops8h 50m

San Juan Luis Munoz Marin Intl

Wed 8/5

8:20 am-6:25 pm

2 stops10h 05m

$458

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Fri 5/29

6:00 am-1:45 pm

1 stop7h 45m

San Juan Luis Munoz Marin Intl

Mon 6/1

2:05 am-11:56 am

1 stop9h 51m

$472

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Showing 1-10 of 24 resultsSorted by cheapest first
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

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Juan (average of $108). Flying from Washington, D.C. Reagan-National Airport to San Juan in December is currently the most expensive (average of $211). 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 May 21, 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 May 21, 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 18% of weekly flights between Washington, D.C. and San Juan have experienced delays in the past year, with the average delay time being 154 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?

Wednesday 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 18% 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 May 21, 2026.
See what other customers who have flown with Southwest,United Airlines, andJetBlue 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
7.9
Good
4,281 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
7.9
Good
4,281 reviews
Southwest
7.9
Good
4,281 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,746 reviews
Southwest
7.9
Good
4,281 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.2
Good
2,982 reviews
Southwest
7.9
Good
4,281 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,642 reviews
Southwest
7.9
Good
4,281 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
2,945 reviews
Southwest
7.9
Good
4,281 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 59m. 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 Spirit Airlines and Delta. 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 Frontier, which is currently one of the cheapest options available, starting at $62. Delta flights start at $68 while deals on Southwest start at $82 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 $352, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Washington, D.C. Reagan-National - San Juan Luis Munoz Marin Intl), you can expect to pay $301 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, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Juan (average of $108). Flying from Washington, D.C. Reagan-National Airport to San Juan in December is currently the most expensive (average of $211). 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 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 May 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$103Average$386FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$113Average$305FlexibilityNo cancel feeOn-time65%
DeltaCheapest$142Average$462FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$218Average$429FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$220Average$404FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$245Average$355FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$250Average$382FlexibilityNo cancel feeOn-time69%

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