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Dulles Intl

$98+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
Apr 24 — May 11
Fri 4/24
Fri 5/1
1 adult, Economy
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Cheap 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 25, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Fri 5/83:03 am
SJU
-
IAD
1 stop15h 29m
Frontier
Wed 5/135:07 pm
IAD
-
SJU
1 stop9h 01m
Frontier
Deal found 3/25$178
This Priceline deal was found by Cheapflights users on 3/23. 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.
Thu 4/96:00 am
SJU
-
IAD
1 stop15h 18m
Frontier
Mon 4/134:25 pm
IAD
-
SJU
1 stop7h 45m
Frontier
Deal found 3/23$186
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Fri 5/83:03 am
SJU
-
IAD
1 stop15h 29m
Frontier
Tue 5/126:37 pm
IAD
-
SJU
1 stop7h 31m
Frontier
Deal found 3/25$188
This FlightHub deal was found by Cheapflights users on 3/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/73:16 am
SJU
-
IAD
1 stop6h 55m
Frontier
Sun 4/126:39 pm
IAD
-
SJU
1 stop16h 39m
Frontier
Deal found 3/22$189
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Tue 4/73:16 am
SJU
-
IAD
1 stop6h 55m
Frontier
Mon 4/134:25 pm
IAD
-
SJU
1 stop7h 45m
Frontier
Deal found 3/20$192
This Frontier deal was found by Cheapflights users on 3/25. 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 5/13:23 pm
SJU
-
IAD
1 stop9h 13m
Frontier
Sun 5/36:20 am
IAD
-
SJU
1 stop7h 48m
Frontier
Deal found 3/25$194
This Frontier deal was found by Cheapflights users on 3/25. 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 5/13:23 pm
SJU
-
IAD
1 stop9h 13m
Frontier
Mon 5/46:00 am
IAD
-
SJU
1 stop8h 13m
Frontier
Deal found 3/25$195
This Priceline deal was found by Cheapflights users on 3/23. 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.
Thu 4/96:00 am
SJU
-
IAD
1 stop15h 18m
Frontier
Sun 4/126:39 pm
IAD
-
SJU
1 stop16h 39m
Frontier
Deal found 3/23$196
This Frontier deal was found by Cheapflights users on 3/23. 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 5/22:48 am
BQN
-
IAD
1 stop6h 19m
Frontier
Tue 5/56:37 pm
IAD
-
BQN
1 stop7h 25m
Frontier
Deal found 3/23$196
This Booking.com deal was found by Cheapflights users on 3/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:03 pm
SJU
-
IAD
1 stop9h 33m
Frontier
Mon 4/278:17 am
IAD
-
SJU
1 stop25h 37m
Frontier
Deal found 3/22$201
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Tue 4/73:16 am
SJU
-
IAD
1 stop6h 55m
Frontier
Fri 4/108:30 pm
IAD
-
SJU
1 stop24h 19m
Frontier
Deal found 3/20$202
This FlightHub deal was found by Cheapflights users on 3/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/183:47 pm
SJU
-
IAD
1 stop8h 49m
Frontier
Sun 4/191:26 pm
IAD
-
SJU
1 stop20h 28m
Frontier
Deal found 3/24$203

Find 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 25, 2026.

Round-trip from

$186
(Priceline)

One-way from

$98
(Frontier)

Popular in

March

Cheapest in

April

Average price

$336

Good round-trip deal

$326 or less

Good one-way deal

$207 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. 3% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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

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 25, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Fri 5/15

9:47 am-6:42 pm

1 stop8h 55m

Washington, D.C. Dulles Intl

Mon 5/18

7:27 pm-9:07 am

1 stop13h 40m

$213

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Thu 5/14

10:02 am-6:42 pm

1 stop8h 40m

Washington, D.C. Dulles Intl

Sun 5/17

7:27 pm-9:02 am

1 stop13h 35m

$214

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Thu 5/7

10:02 am-6:42 pm

1 stop8h 40m

Washington, D.C. Dulles Intl

Mon 5/11

7:27 pm-9:07 am

1 stop13h 40m

$224

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Thu 6/4

10:02 am-6:42 pm

1 stop8h 40m

Washington, D.C. Dulles Intl

Thu 6/11

1:38 pm-9:52 am

1 stop20h 14m

$264

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Thu 5/21

10:02 am-6:42 pm

1 stop8h 40m

Washington, D.C. Dulles Intl

Sun 5/24

7:27 pm-9:07 am

1 stop13h 40m

$281

AguadillaWashington, D.C.

BQN - IAD

BQNIAD

Aguadilla Borinquen

Thu 8/20

2:59 am-12:53 pm

1 stop9h 54m

Washington, D.C. Dulles Intl

Mon 8/24

1:38 pm-2:04 am

1 stop12h 26m

$321
Quickest round-trip

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 5/6

7:20 am-11:21 am

Nonstop4h 01m

Washington, D.C. Dulles Intl

Tue 5/12

5:24 pm-9:24 pm

Nonstop4h 00m

$333

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 4/22

1:00 am-7:28 am

1 stop6h 28m

Washington, D.C. Dulles Intl

Sun 4/26

5:24 pm-9:24 pm

Nonstop4h 00m

$338

AguadillaWashington, D.C.

BQN - IAD

BQNIAD

Aguadilla Borinquen

Wed 4/8

2:43 am-4:39 pm

2 stops13h 56m

Washington, D.C. Dulles Intl

Mon 4/13

8:30 pm-1:43 am

1 stop29h 13m

$341

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Thu 6/18

10:37 am-12:53 pm

1 stop26h 16m

Washington, D.C. Dulles Intl

Sun 6/21

1:38 pm-9:52 am

1 stop20h 14m

$341

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 55 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport (average of $57). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $281). 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 25, 2026.

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 March 25, 2026.
Read through reviews of airlines operating flights from Puerto Rico to Washington, D.C. Dulles Intl Airport, such as United Airlines and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,478 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,478 reviews
United Airlines
7.4
Good
9,478 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Frontier
5.7
Fair
3,017 reviews
United Airlines
7.4
Good
9,478 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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 4h 01m. Puerto Rico and Washington, D.C. Dulles Intl Airport are separated by a distance of 1573 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 Frontier ($59), United Airlines ($128), and Delta ($146).

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

    While some choose either Aguadilla Borinquen - Washington, D.C. Dulles Intl or Ponce Mercedita - 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 (88%), United Airlines (69%), Frontier (57%).

  • 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 $163. On average you can expect to pay $472. The most popular route, (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl), can usually be booked for $194.

  • 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, February is the cheapest month in which you can book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport (average of $57). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $281). 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
Alexandria
Woodbridge
Tysons
Owings Mills
Arlington
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park
Cordova

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Puerto Rico to Dulles Intl

Discover the top 2 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 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$76Average$167FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$216Average$447FlexibilityNo cancel feeOn-time69%

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