$57 Cheap Flights from San Juan (SJU) to Washington (IAD)

View $57 flight on Fri, Dec 19, 2025Opens in a new window

Popular airlines from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)

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

Prices were available within the past 7 days and start at $57 for one-way flights and $128 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Nov 21 - Sat, Nov 22
SJU
San Juan
IAD
Washington
$128 Roundtrip, found 2 days ago
$128
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Nov 21 from San Juan to Washington, returning Sat, Nov 22, priced at $128 found 2 days ago
Frontier Airlines
Fri, Dec 19 - Sun, Jan 4
SJU
San Juan
IAD
Washington
$146 Roundtrip, found 5 hours ago
$146
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, Dec 19 from San Juan to Washington, returning Sun, Jan 4, priced at $146 found 5 hours ago
Frontier Airlines
Fri, Feb 6 - Fri, Feb 13
SJU
San Juan
IAD
Washington
$148 Roundtrip, found 1 hour ago
$148
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Feb 6 from San Juan to Washington, returning Fri, Feb 13, priced at $148 found 1 hour ago
Frontier Airlines
Sun, Dec 21 - Sun, Jan 4
SJU
San Juan
IAD
Washington
$158 Roundtrip, found 1 hour ago
$158
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sun, Dec 21 from San Juan to Washington, returning Sun, Jan 4, priced at $158 found 1 hour ago
Frontier Airlines
Thu, Dec 4 - Sun, Jan 4
SJU
San Juan
IAD
Washington
$159 Roundtrip, found 4 days ago
$159
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Dec 4 from San Juan to Washington, returning Sun, Jan 4, priced at $159 found 4 days ago
Frontier Airlines
Tue, Dec 23 - Mon, Jan 12
SJU
San Juan
IAD
Washington
$163 Roundtrip, found 3 days ago
$163
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Dec 23 from San Juan to Washington, returning Mon, Jan 12, priced at $163 found 3 days ago
Frontier Airlines
Fri, Jan 16 - Sun, Jan 18
SJU
San Juan
IAD
Washington
$164 Roundtrip, found 5 days ago
$164
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Jan 16 from San Juan to Washington, returning Sun, Jan 18, priced at $164 found 5 days ago
Delta
Thu, Feb 5 - Tue, Feb 10
SJU
San Juan
IAD
Washington
$175 Roundtrip, found 3 days ago
$175
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Feb 5 from San Juan to Washington, returning Tue, Feb 10, priced at $175 found 3 days ago
United
Fri, Nov 21 - Mon, Nov 24
SJU
San Juan
IAD
Washington
$191 Roundtrip, found 15 hours ago
$191
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Nov 21 from San Juan to Washington, returning Mon, Nov 24, priced at $191 found 15 hours ago
American Airlines
Fri, Jan 16 - Mon, Jan 19
SJU
San Juan
IAD
Washington
$215 Roundtrip, found 1 day ago
$215
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Jan 16 from San Juan to Washington, returning Mon, Jan 19, priced at $215 found 1 day ago

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

February is typically the cheapest month to fly

From $128 - $507 per traveler.

Alternative airports near Washington

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

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $407
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $407

Frequently asked questions

How much does a flight from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD) cost?
Get a cheap one-way flight from $57 or cheap return flight from $128 from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from SJU to IAD is November, when demand is low. Off-peak months are usually when airlines offer better prices between these airports.
Which airlines fly direct from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
When heading out of Luis Munoz Marin Intl. Airport (SJU), you can jump on a direct flight to Washington Dulles Intl. Airport (IAD) with United Airlines.
What is the cheapest airline that flies from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SJU to IAD flight.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
When jetting out of Luis Munoz Marin Intl. Airport (SJU), you can pick from an average of 2 daily nonstop flights to Washington Dulles Intl. Airport (IAD).
What are the most popular departure times for flights from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
Flights between SJU and IAD are their busiest at 8 AM. For a more relaxed experience and potentially cheaper prices, look for a time when demand is lower.
What day of the week has the most flights from SJU to IAD?
Friday offers the most flights from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD). Consider traveling on this day and you'll have a greater chance of finding a schedule that works for you.
What is the earliest flight from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
Take the earliest flight at around 8:10AM UTC-4, leaving from Luis Munoz Marin Intl. Airport (SJU). You'll be traveling for about 4h, coming in to land at Washington Dulles Intl. Airport (IAD) at approximately 11:10AM UTC-5.
How long does it take to fly from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
The average flight time from SJU to IAD is 4 hours, covering a total distance of 1,600 mi.
What is the best time to fly from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
Select a flight from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the risk of cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Washington from Luis Munoz Marin Intl. Airport (SJU)?
Luis Munoz Marin Intl. Airport (SJU) offers direct flights to Washington. These are a few of the airports you can fly straight to:

  • Washington Dulles Intl. Airport (IAD)
  • Ronald Reagan Washington National Airport (DCA)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)

Is it cheaper to buy a plane ticket from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD) last-minute?
Waiting until just before your trip to book your flight from SJU to IAD generally means paying more. While you may come across some last-minute offers, there's no guarantee. Be flexible with your itinerary to boost your chances of scoring a bargain.
Is it cheaper to book a SJU to IAD flight and hotel package?
Compared with arranging hotels and flights separately, booking a SJU to IAD flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place will take the hassle out of planning your trip. Simply pick your flights and select from our extensive range of stays, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
Typically, you can cancel or reschedule your SJU to IAD flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you'd like further details, visit our Customer Service portal.

Travel information

Origin airport
Luis Munoz Marin Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$128
Distance
1574 mi
Average flight time
3 hours 2 mins

Book with confidence

San Juan to Washington Flights

The cheapest times to fly from San Juan to Washington

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 San Juan to Washington are during the month of November. You can find some of the cheapest flights from San Juan to Washington with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from San Juan to Washington: 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 San Juan to Washington

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 San Juan to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $57 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 San Juan to Washington 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 San Juan to Washington 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.

 

San Juan to Washington Flights

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*Available to One Key members.