$68 Cheap Flights from San Juan (SJU) to Washington (IAD)

View $68 flight on Wed, Dec 24, 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 $68 for one-way flights and $112 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sun, Nov 2 - Sun, Nov 9
SJU
San Juan
IAD
Washington
$112 Roundtrip, found 4 days ago
$112
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sun, Nov 2 from San Juan to Washington, returning Sun, Nov 9, priced at $112 found 4 days ago
United
Fri, Oct 17 - Mon, Oct 20
SJU
San Juan
IAD
Washington
$136 Roundtrip, found 3 hours ago
$136
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 17 from San Juan to Washington, returning Mon, Oct 20, priced at $136 found 3 hours ago
American Airlines
Thu, Oct 23 - Mon, Oct 27
SJU
San Juan
IAD
Washington
$147 Roundtrip, found 7 hours ago
$147
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Thu, Oct 23 from San Juan to Washington, returning Mon, Oct 27, priced at $147 found 7 hours ago
American Airlines
Fri, Oct 24 - Tue, Oct 28
SJU
San Juan
IAD
Washington
$155 Roundtrip, found 1 day ago
$155
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Oct 24 from San Juan to Washington, returning Tue, Oct 28, priced at $155 found 1 day ago
Frontier Airlines
Thu, Oct 16 - Mon, Oct 20
SJU
San Juan
IAD
Washington
$161 Roundtrip, found 1 hour ago
$161
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Oct 16 from San Juan to Washington, returning Mon, Oct 20, priced at $161 found 1 hour ago
Frontier Airlines
Thu, Nov 13 - Sun, Nov 16
SJU
San Juan
IAD
Washington
$164 Roundtrip, found 5 hours ago
$164
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Nov 13 from San Juan to Washington, returning Sun, Nov 16, priced at $164 found 5 hours ago
American Airlines
Thu, Aug 7 - Sun, Aug 17
SJU
San Juan
IAD
Washington
$173 Roundtrip, found 3 days ago
$173
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 7 from San Juan to Washington, returning Sun, Aug 17, priced at $173 found 3 days ago
United
Fri, Oct 24 - Mon, Oct 27
SJU
San Juan
IAD
Washington
$175 Roundtrip, found 1 day ago
$175
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 24 from San Juan to Washington, returning Mon, Oct 27, priced at $175 found 1 day ago
American Airlines
Thu, Oct 23 - Mon, Oct 27
SJU
San Juan
IAD
Washington
$178 Roundtrip, found 7 hours ago
$178
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Thu, Oct 23 from San Juan to Washington, returning Mon, Oct 27, priced at $178 found 7 hours ago
Delta
Thu, Oct 16 - Mon, Oct 20
SJU
San Juan
IAD
Washington
$214 Roundtrip, found 1 hour ago
$214
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Oct 16 from San Juan to Washington, returning Mon, Oct 20, priced at $214 found 1 hour 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.

Graph displaying average flight prices per month

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 $298
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $298
Flights from San Juan (SJU) to Washington (IAD)
Origin airport
Luis Munoz Marin Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$112
Distance
1574 mi
Average flight time
3 hours 58 mins

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 $68 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.

 

Frequently asked questions

How much does a flight from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD) cost?
You can score affordable return tickets from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD) starting from $146. Book your seat and get ready to go. 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 United flight leaving SJU on July 31 2025 and touching down at IAD. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SJU to IAD?
The cheapest flights from SJU to IAD 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 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 SJU to IAD?
Fly from SJU to IAD with Frontier Airlines. This carrier currently offers the cheapest one-way ticket for this route, starting at $56. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SJU on July 31 2025. Prices were last updated on July 23 2025 and have not changed since.
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.

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*Available to One Key members.