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Dulles Intl

$118+ 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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$184
(Frontier)

One-way from

$118
(United Airlines)

Popular in

March

Cheapest in

July

Average price

$298

Good round-trip deal

$262 or less

Good one-way deal

$149 or less
From Puerto Rico to Washington, D.C. Dulles Intl
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One-way flight from Puerto Rico to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Puerto Rico to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Puerto Rico to Washington, D.C. Dulles Intl.
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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 September 17, 2025.

This Frontier deal was found by Cheapflights users on 9/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:22 amSJU - IAD
2 stops17h 07mFrontier
Sun 10/199:07 pmIAD - SJU
Nonstop3h 52mFrontier
Deal found 9/17$184
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/23:45 pmSJU - IAD
Nonstop3h 56mFrontier
Sun 11/97:26 pmIAD - SJU
Nonstop3h 52mFrontier
Deal found 9/16$187
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/239:06 pmSJU - IAD
1 stop17h 19mFrontier
Sun 10/269:07 pmIAD - SJU
Nonstop3h 52mFrontier
Deal found 9/17$192
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/164:26 pmSJU - IAD
Nonstop3h 56mFrontier
Mon 10/209:28 pmIAD - SJU
2 stops17h 56mFrontier
Deal found 9/15$197
This Frontier deal was found by Cheapflights users on 9/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/94:26 pmSJU - IAD
Nonstop3h 56mFrontier
Sat 10/119:38 pmIAD - SJU
2 stops17h 46mFrontier
Deal found 9/16$198
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/63:45 pmSJU - IAD
Nonstop3h 56mFrontier
Sun 11/93:51 pmIAD - SJU
1 stop8h 41mFrontier
Deal found 9/15$205
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:00 amSJU - IAD
Nonstop4h 13mFrontier
Thu 12/1110:08 amIAD - SJU
Nonstop3h 54mFrontier
Deal found 9/15$215
This Frontier deal was found by Cheapflights users on 9/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/94:26 pmSJU - IAD
Nonstop3h 56mFrontier
Mon 10/139:28 pmIAD - SJU
2 stops17h 56mFrontier
Deal found 9/16$216
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:19 pmSJU - IAD
2 stops9h 10mFrontier
Sun 11/27:26 pmIAD - SJU
Nonstop3h 52mFrontier
Deal found 9/15$218
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/39:30 amSJU - IAD
1 stop6h 26mFrontier
Sun 11/97:26 pmIAD - SJU
Nonstop3h 52mFrontier
Deal found 9/15$219
This CheapOair deal was found by Cheapflights users on 9/15. 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.
Mon 9/2210:15 amPSE - IAD
1 stop8h 09mFrontier
Sun 9/287:14 pmIAD - PSE
1 stop14h 16mFrontier
Deal found 9/15$252
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/152:59 amBQN - IAD
1 stop16h 08mFrontier
Fri 10/249:58 pmIAD - BQN
1 stop12h 10mFrontier
Deal found 9/15$257

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 September 17, 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

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Fri 10/3

10:15 am-6:19 pm

1 stop8h 04m

Washington, D.C. Dulles Intl

Sun 10/5

7:14 pm-9:30 am

1 stop14h 16m

$252

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Mon 11/3

12:15 pm-7:51 pm

1 stop8h 36m

Washington, D.C. Dulles Intl

Sun 11/9

8:36 pm-11:20 am

1 stop13h 44m

$252

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Fri 10/31

12:15 pm-7:51 pm

1 stop7h 36m

Washington, D.C. Dulles Intl

Fri 11/14

8:36 pm-11:20 am

1 stop13h 44m

$252

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Fri 11/7

12:15 pm-7:51 pm

1 stop8h 36m

Washington, D.C. Dulles Intl

Sun 11/9

8:36 pm-11:20 am

1 stop13h 44m

$252

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Fri 10/31

12:15 pm-7:51 pm

1 stop7h 36m

Washington, D.C. Dulles Intl

Sun 11/2

8:36 pm-11:20 am

1 stop13h 44m

$268

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 10/31

2:22 pm-11:01 pm

1 stop8h 39m

Washington, D.C. Dulles Intl

Mon 11/3

6:05 am-2:12 pm

1 stop7h 07m

$275

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 11/20

3:20 pm-11:03 pm

1 stop8h 43m

Washington, D.C. Dulles Intl

Sat 12/6

12:19 pm-12:03 am

1 stop10h 44m

$282

AguadillaWashington, D.C.

BQN - IAD

BQNIAD

Aguadilla Borinquen

Wed 1/28

1:09 am-7:20 am

1 stop7h 11m

Washington, D.C. Dulles Intl

Sun 2/1

8:20 am-11:57 pm

2 stops14h 37m

$285

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 10/10

4:55 pm-8:52 pm

Nonstop3h 57m

Washington, D.C. Dulles Intl

Tue 10/14

8:39 am-12:34 pm

Nonstop3h 55m

$296

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Sat 11/8

8:30 am-11:35 am

Nonstop4h 05m

Washington, D.C. Dulles Intl

Mon 11/10

8:27 am-1:17 pm

Nonstop3h 50m

$296

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 54 results
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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 $292). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 September 17, 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.

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 September 17, 2025.
Read through reviews of airlines operating flights from Puerto Rico to Washington, D.C. Dulles Intl Airport, such as Delta, United Airlines, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Frontier
5.8
Fair
3,173 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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.

  • How long is the flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

    Departing from Puerto Rico to Washington, D.C. Dulles Intl Airport will take you 7h 11m. Puerto Rico and Washington, D.C. Dulles Intl Airport are separated by a distance of 1541 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 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 United Airlines ($118), Delta ($123), and Frontier ($124).

  • 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 Aguadilla Borinquen - 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 most reliable airlines from Puerto Rico to Washington, D.C. Dulles Intl Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Puerto Rico to Washington, D.C. Dulles Intl Airport on time: Air Canada (83%), United Airlines (83%), Frontier (80%).

  • 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 $102. On average you can expect to pay $462. The most popular route, (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl), can usually be booked for $120.

  • 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 $292). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
National Harbor
Dundalk

Browse thousands of different options on Cheapflights for your next trip

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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 Reagan-National flights
Luis Munoz Marin Intl to Baltimore flights
Port of Spain to Dulles Intl flights
Nassau to Dulles Intl flights
Nassau to Reagan-National flights
Santo Domingo to Baltimore flights
Santo Domingo to Dulles Intl flights
Punta Cana to Dulles Intl flights
Montego Bay to Baltimore flights
Nassau to Baltimore flights
Saint Thomas Island to Dulles Intl flights
Santo Domingo to Reagan-National flights
Punta Cana to Baltimore flights
Saint Thomas Island to Baltimore flights
Port of Spain to Reagan-National flights
Port of Spain to Baltimore flights
Saint Thomas Island to Reagan-National flights
Montego Bay to Dulles Intl flights
Ponce to Dulles Intl flights
Montego Bay to Reagan-National flights
Kingston to Reagan-National flights
Bridgetown to Dulles Intl flights
Bridgetown to Baltimore flights
Ponce to Reagan-National flights
Santiago de los Caballeros to Baltimore flights
Kingston to Dulles Intl flights
Christiansted to Reagan-National flights
Simpson Bay to Dulles Intl flights
Bridgetown to Reagan-National flights
Punta Cana to Reagan-National flights
Kingston to Baltimore flights
Santiago de los Caballeros to Reagan-National flights
Santiago de los Caballeros to Dulles Intl flights
Oranjestad to Baltimore flights
Oranjestad to Dulles Intl flights
Aguadilla to Reagan-National flights
Simpson Bay to Reagan-National flights
Simpson Bay to Baltimore flights
Castries to Baltimore flights
Christiansted to Baltimore flights
St. John's to Reagan-National flights
Oranjestad to Reagan-National flights
Christiansted to Dulles Intl flights
Aguadilla to Dulles Intl flights
George Town to Dulles Intl flights
Willemstad to Dulles Intl 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$232FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$240Average$471FlexibilityNo cancel feeOn-time69%
DeltaCheapest$269Average$431FlexibilityNo cancel feeOn-timeN/A

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