$73 Cheap Flights from Washington (DCA) to San Juan (SJU)

View $73 flight on Thu, Sep 25, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU)

Cheap Flights from Washington to San Juan (DCA-SJU)

Prices were available within the past 7 days and start at $73 for one-way flights and $140 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sun, Oct 5 - Mon, Oct 6
DCA
Washington
SJU
San Juan
$140 Roundtrip, found 1 hour ago
$140
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sun, Oct 5 from Washington to San Juan, returning Mon, Oct 6, priced at $140 found 1 hour ago
American Airlines
Tue, Oct 21 - Tue, Oct 28
DCA
Washington
SJU
San Juan
$145 Roundtrip, found 3 hours ago
$145
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, Oct 21 from Washington to San Juan, returning Tue, Oct 28, priced at $145 found 3 hours ago
Southwest Airlines
Thu, Sep 25 - Tue, Sep 30
DCA
Washington
SJU
San Juan
$151 Roundtrip, just found
$151
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Sep 25 from Washington to San Juan, returning Tue, Sep 30, priced at $151 just found
Southwest Airlines
Tue, Jul 29 - Thu, Jul 31
DCA
Washington
SJU
San Juan
$155 Roundtrip, just found
$155
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, Jul 29 from Washington to San Juan, returning Thu, Jul 31, priced at $155 just found
Southwest Airlines
Sat, Jul 26 - Wed, Jul 30
DCA
Washington
SJU
San Juan
$165 Roundtrip, found 4 hours ago
$165
Roundtrip
found 4 hours ago
Select Southwest Airlines flight, departing Sat, Jul 26 from Washington to San Juan, returning Wed, Jul 30, priced at $165 found 4 hours ago
American Airlines
Sat, Oct 11 - Sat, Oct 18
DCA
Washington
SJU
San Juan
$170 Roundtrip, found 8 hours ago
$170
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sat, Oct 11 from Washington to San Juan, returning Sat, Oct 18, priced at $170 found 8 hours ago
Southwest Airlines
Tue, Sep 30 - Wed, Oct 1
DCA
Washington
SJU
San Juan
$175 Roundtrip, found 1 hour ago
$175
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Tue, Sep 30 from Washington to San Juan, returning Wed, Oct 1, priced at $175 found 1 hour ago
JetBlue Airways
Thu, Sep 25 - Tue, Sep 30
DCA
Washington
SJU
San Juan
$186 Roundtrip, just found
$186
Roundtrip
just found
Select JetBlue Airways flight, departing Thu, Sep 25 from Washington to San Juan, returning Tue, Sep 30, priced at $186 just found
Delta
Sun, Oct 5 - Sat, Oct 11
DCA
Washington
SJU
San Juan
$188 Roundtrip, just found
$188
Roundtrip
just found
Select Delta flight, departing Sun, Oct 5 from Washington to San Juan, returning Sat, Oct 11, priced at $188 just found
United
Sun, Aug 17 - Fri, Aug 22
DCA
Washington
SJU
San Juan
$195 Roundtrip, just found
$195
Roundtrip
just found
Select United flight, departing Sun, Aug 17 from Washington to San Juan, returning Fri, Aug 22, priced at $195 just found

Find the cheapest month to fly from Washington (DCA) to San Juan (SJU)

September is typically the cheapest month to fly

From $135 - $276 per traveler.

Graph displaying average flight prices per month

Alternative airports near San Juan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Luis Munoz Marin Intl. SJU. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $293
SJU
Luis Munoz Marin Intl.
Cheapest
Average driving time to city center16 min
Flights from $293
Flights from Washington (DCA) to San Juan (SJU)
Origin airport
Ronald Reagan Washington National
Destination airport
Luis Munoz Marin Intl.
Airlines serving
American Airlines, Delta, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$139
Distance
1557 mi
Average flight time
2 hours 59 mins

Washington to San Juan Flights

The cheapest times to fly from Washington to San Juan

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to San Juan are during the month of October. You can find some of the cheapest flights from Washington to San Juan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to San Juan

Sunday is one of the best days to book for cheap flights from Washington to San Juan: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to San Juan

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to San Juan in 2025. You can also book with separate airlines for your outbound and return journeys, from $73 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to San Juan flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to San Juan airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU) cost?
Cheap return fares from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU) start from $181. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a JetBlue Airways and United flight leaving DCA on July 21 2025 and touching down at SJU. The price was last updated on July 15 2025 and has not changed since.
What is the cheapest month to fly from DCA to SJU?
The cheapest flights from DCA to SJU are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU)?
When jetting out of Ronald Reagan Washington National Airport (DCA), you can catch a direct flight to Luis Munoz Marin Intl. Airport (SJU) with JetBlue Airways.
What is the cheapest airline that flies from DCA to SJU?
With prices as low as $113 for a one-way flight from DCA to SJU, JetBlue Airways is currently the cheapest airline flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from DCA on October 8 2025. Prices were last updated on July 15 2025 and have not changed since.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU)?
On average, Ronald Reagan Washington National Airport (DCA) only has 1 direct flight to Luis Munoz Marin Intl. Airport (SJU) each day. To explore more options, try our easy-to-use filter tool. Enter your travel dates, then click on "1 Stop" or "2+ Stops" to find flights with layovers.
What are the most popular departure times for flights from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU)?
Flights between DCA and SJU are busiest at 8 AM. If you want a more relaxed experience and potentially cheaper tickets, look for a departure outside the usual busy windows.
What day of the week has the most flights from DCA to SJU?
Friday has the most flights from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU). Consider leaving on this day and you'll have the best chance of finding a departure that fits your schedule.
What is the earliest flight from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU)?
Ronald Reagan Washington National Airport (DCA)'s first flight to Luis Munoz Marin Intl. Airport (SJU) leaves at approximately 8:00AM UTC-5. With a travel time of 3h 40m, you'll arrive at around 12:40PM UTC-4.
How long does it take to fly from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU)?
Flights from DCA to SJU have an average travel time of 3 hours and 40 minutes. The distance between these two airports is 1,550 mi.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU)?
To avoid possible delays on the Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU) route, aim to travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Juan from Ronald Reagan Washington National Airport (DCA)?
Compare your flight options from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU). This is the only airport in San Juan you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU) last-minute?
Waiting until just before your departure to book a ticket from DCA to SJU generally means paying more. While you may come across some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans for the best chance of getting a bargain.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Luis Munoz Marin Intl. Airport (SJU)?
Typically, you can cancel or reschedule your DCA to SJU flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you want more details, head to our Customer Service portal.

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*Available to One Key members.