HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$99+ Cheap flights from Puerto Rico to Dulles Intl (IAD)

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 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Puerto Rico to Dulles Intl with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Puerto Rico to Dulles Intl

Keep the following information in mind while searching for Puerto Rico to Dulles Intl flight deals. Data was last updated March 31, 2025.

Round-trip from

$222
(Cheapflightsfares)

One-way from

$99
(Frontier)

Popular in

June

Cheapest in

February

Average price

$332

Good round-trip deal

$321 or less

Good one-way deal

$179 or less
From Puerto Rico to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Puerto Rico to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals
Price to beat on a round-trip flight from Puerto Rico to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Puerto Rico to Washington, D.C. Dulles Intl.
Search Deals

Find flight deals from Puerto Rico to Dulles Intl

Cheapest flights from Puerto Rico to Dulles Intl
Explore the most affordable flight options available from Puerto Rico to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

This CheapOair deal was found by Cheapflights users on 3/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/227:20 amSJU - IAD
Nonstop3h 55mFrontier
Tue 5/274:55 pmIAD - SJU
Nonstop3h 52mFrontier
Deal found 3/31$213
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/97:25 amSJU - IAD
Nonstop3h 59mUnited Airlines
Tue 5/136:22 amIAD - SJU
1 stop8h 22mUnited Airlines
Deal found 3/30$251
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:35 amSJU - IAD
1 stop6h 27mDelta
Wed 5/76:00 amIAD - SJU
1 stop6h 45mDelta
Deal found 3/31$255
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Fri 4/256:05 amSJU - IAD
1 stop10h 18mAmerican Airlines
Mon 4/282:12 pmIAD - SJU
1 stop6h 16mAmerican Airlines
Deal found 3/30$261
This CheapOair deal was found by Cheapflights users on 3/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/162:59 amBQN - IAD
1 stop7h 56mFrontier
Fri 5/233:38 pmIAD - BQN
1 stop26h 51mFrontier
Deal found 3/31$318
This CheapOair deal was found by Cheapflights users on 3/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/31:25 pmPSE - IAD
1 stop27h 40mFrontier
Sat 4/512:48 pmIAD - PSE
1 stop23h 47mFrontier
Deal found 3/30$358
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/912:15 amBQN - IAD
2 stops13h 55mUnited Airlines
Sat 5/173:31 pmIAD - BQN
1 stop7h 38mUnited Airlines
Deal found 3/30$375
This Mytrip deal was found by Cheapflights users on 3/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/111:59 amSJU - IAD
3 stops33h 27mMultiple Airlines
Fri 5/169:42 pmIAD - SJU
1 stop12h 33mMultiple Airlines
Deal found 3/30$453

Cheapflights Fare Finder

Customize your flight search to find flights from Puerto Rico to Dulles Intl 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 March 31, 2025.
Use the filters below to find and compare flights from Puerto Rico to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Puerto Rico

Fly to

Dulles Intl

Route

Depart

Return

Price

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 5/22

7:20 am-11:15 am

Nonstop3h 55m

Washington, D.C. Dulles Intl

Tue 5/27

4:55 pm-8:47 pm

Nonstop3h 52m

$213

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 5/9

7:25 am-11:24 am

Nonstop3h 59m

Washington, D.C. Dulles Intl

Tue 5/13

6:22 am-2:44 pm

1 stop8h 22m

$251

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 5/1

6:35 am-1:02 pm

1 stop6h 27m

Washington, D.C. Dulles Intl

Wed 5/7

6:00 am-12:45 pm

1 stop6h 45m

$255

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 4/25

6:05 am-4:23 pm

1 stop10h 18m

Washington, D.C. Dulles Intl

Mon 4/28

2:12 pm-8:28 pm

1 stop6h 16m

$261

AguadillaWashington, D.C.

BQN - IAD

BQNIAD

Aguadilla Borinquen

Wed 4/16

2:59 am-10:55 am

1 stop7h 56m

Washington, D.C. Dulles Intl

Fri 5/23

3:38 pm-6:29 pm

1 stop26h 51m

$318

AguadillaWashington, D.C.

BQN - IAD

BQNIAD

Aguadilla Borinquen

Fri 5/9

12:15 am-2:10 pm

2 stops13h 55m

Washington, D.C. Dulles Intl

Sat 5/17

3:31 pm-11:09 pm

1 stop7h 38m

$375

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Thu 4/10

1:25 pm-5:05 pm

1 stop27h 40m

Washington, D.C. Dulles Intl

Mon 4/14

5:52 pm-12:35 pm

1 stop18h 43m

$408

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Sun 5/11

1:59 am-11:26 am

3 stops33h 27m

Washington, D.C. Dulles Intl

Fri 5/16

9:42 pm-10:15 am

1 stop12h 33m

$453

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Tue 6/17

7:35 am-11:28 am

Nonstop3h 53m

$99

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 6/18

1:05 am-7:19 am

1 stop6h 14m

$113

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 18 results
1
2

Best time to book a flight from Puerto Rico to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Puerto Rico 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 Puerto Rico to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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 PR to IAD?

Find hourly flight availability from Puerto Rico to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Puerto Rico to Washington, D.C. Dulles Intl Airport as you normally would.

Weekly flight availability from Puerto Rico to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Puerto Rico to Dulles Intl. 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 March 31, 2025.

The most flights from PR0 to IAD are scheduled on a Saturday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated March 31, 2025.
Peruse reviews from past customers who have flown with Delta, Avelo Airlines and United Airlines from Puerto Rico to Washington, D.C. to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Avelo Airlines
7.5
Good
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,614 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Sun Country Air
6.9
Okay
349 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Puerto Rico to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Puerto Rico to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airlines for a one-way flight from Puerto Rico to Washington, D.C. Dulles Intl Airport are Frontier ($99), United Airlines ($113), and American Airlines ($128).

  • What are the most popular routes from Puerto Rico to Washington, D.C. Dulles Intl Airport?

    While some choose either Ponce Mercedita - Washington, D.C. Dulles Intl or Culebra - Washington, D.C. Dulles Intl, San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl is the most popular route from Puerto Rico to Washington, D.C. Dulles Intl Airport.

  • What are the cheapest flights from Puerto Rico to Washington, D.C. Dulles Intl Airport?

    The cheapest flight price from Puerto Rico to Washington, D.C. Dulles Intl Airport is $107. On average you can expect to pay $1,913. The most popular route, (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl), can usually be booked for $244.

  • Can I find deals for flights from Puerto Rico to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Puerto Rico to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Puerto Rico to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to Dulles Intl.

  • Can I find deals for business class flights from Puerto Rico to Dulles Intl?

    Yes. Cheapflights offers flight deals from Puerto Rico to Dulles Intl 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 Puerto Rico to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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

Traveling to a place near Puerto Rico?

Book flights to Puerto Rico if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Tysons
Springfield
Rockville
Fredericksburg
Woodbridge
Gaithersburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Gettysburg
National Harbor
Oxon Hill

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Puerto Rico to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Luis Munoz Marin Intl to Dulles Intl flights
Luis Munoz Marin Intl to Baltimore flights
Luis Munoz Marin Intl to Reagan-National flights
Montego Bay to Dulles Intl flights
Montego Bay to Baltimore flights
Saint Thomas Island to Dulles Intl flights
Santo Domingo to Dulles Intl flights
Port of Spain to Reagan-National flights
Port of Spain to Dulles Intl flights
Punta Cana to Dulles Intl flights
Bridgetown to Dulles Intl flights
Santo Domingo to Reagan-National flights
Nassau to Dulles Intl flights
Nassau to Reagan-National flights
Santo Domingo to Baltimore flights
Kingston to Dulles Intl flights
Saint Thomas Island to Reagan-National flights
Kingston to Reagan-National flights
Oranjestad to Dulles Intl flights
Punta Cana to Baltimore flights
Bridgetown to Reagan-National flights
Port of Spain to Baltimore flights
Simpson Bay to Dulles Intl flights
Saint Thomas Island to Baltimore flights
Santiago de los Caballeros to Dulles Intl flights
Nassau to Baltimore flights
Christiansted to Reagan-National flights
Kingston to Baltimore flights
Christiansted to Dulles Intl flights
Simpson Bay to Reagan-National flights
Ponce to Dulles Intl flights
Bridgetown to Baltimore flights
Christiansted to Baltimore flights
Simpson Bay to Baltimore flights
Oranjestad to Baltimore flights
Montego Bay to Reagan-National flights
Oranjestad to Reagan-National flights
Santiago de los Caballeros to Reagan-National flights
Santiago de los Caballeros to Baltimore flights
Punta Cana to Reagan-National flights
George Town to Reagan-National flights
George Town to Dulles Intl flights
George Town to Baltimore flights
Aguadilla to Reagan-National flights
Providenciales to Dulles Intl flights
Freeport to Dulles Intl flights
Castries to Baltimore flights
Willemstad to Dulles Intl flights
St. George's to Reagan-National flights

Top 3 airlines flying from Puerto Rico to Dulles Intl

Discover the top 3 airlines that operate flights from Puerto Rico to Dulles Intl. 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$359FlexibilityNo cancel feeOn-time62%
DeltaCheapest$269Average$431FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$279Average$442FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.