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Dulles Intl

$161+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
Jul 24 — Jul 311
Fri 7/24
Fri 7/31
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 June 24, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/20. 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 8/46:00 am
SJU
-
IAD
1 stop13h 38m
Frontier
Tue 8/117:48 am
IAD
-
SJU
2 stops29h 53m
Frontier
Deal found 6/20$274
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Wed 9/26:45 am
SJU
-
IAD
1 stop12h 59m
Frontier
Tue 9/811:05 am
IAD
-
SJU
1 stop26h 11m
Frontier
Deal found 6/19$277
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 8/76:00 am
SJU
-
IAD
1 stop13h 38m
Frontier
Tue 8/117:48 am
IAD
-
SJU
2 stops29h 53m
Frontier
Deal found 6/19$285
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:00 am
SJU
-
IAD
1 stop13h 38m
Frontier
Thu 8/137:48 am
IAD
-
SJU
2 stops16h 53m
Frontier
Deal found 6/23$293
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:00 am
SJU
-
IAD
1 stop13h 38m
Frontier
Tue 7/148:33 pm
IAD
-
SJU
2 stops28h 08m
Frontier
Deal found 6/22$295
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Thu 7/96:00 am
SJU
-
IAD
1 stop13h 38m
Frontier
Sat 7/255:29 pm
IAD
-
SJU
1 stop22h 36m
Frontier
Deal found 6/20$296
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Thu 7/96:00 am
SJU
-
IAD
1 stop13h 38m
Frontier
Sun 7/195:40 pm
IAD
-
SJU
1 stop22h 25m
Frontier
Deal found 6/20$298
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 8/118:37 pm
SJU
-
IAD
1 stop13h 39m
Frontier
Sat 8/155:29 pm
IAD
-
SJU
1 stop22h 42m
Frontier
Deal found 6/19$302
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 8/186:45 am
SJU
-
IAD
1 stop12h 59m
Frontier
Sun 8/238:39 pm
IAD
-
SJU
2 stops19h 32m
Frontier
Deal found 6/20$303
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:30 am
SJU
-
IAD
2 stops15h 58m
Frontier
Fri 10/166:46 pm
IAD
-
SJU
1 stop28h 55m
Frontier
Deal found 6/23$318
This American Airlines deal was found by Cheapflights users on 6/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:30 am
SJU
-
IAD
1 stop15h 25m
American Airlines
Sat 8/227:57 am
IAD
-
SJU
1 stop6h 54m
American Airlines
Deal found 6/23$321
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 7/316:00 am
SJU
-
IAD
1 stop13h 38m
Frontier
Tue 8/45:40 pm
IAD
-
SJU
1 stop22h 31m
Frontier
Deal found 6/19$324

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 June 24, 2026.

Round-trip from

$274
(Kiwi.com)

One-way from

$161
(Trip.com)

Popular in

March

Cheapest in

January

Average price

$361

Good round-trip deal

$468 or less

Good one-way deal

$231 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. 2% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 2026
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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.
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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 June 24, 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

AguadillaWashington, D.C.

BQN - IAD

BQNIAD

Aguadilla Borinquen

Wed 8/19

3:10 am-4:07 pm

1 stop12h 57m

Washington, D.C. Dulles Intl

Mon 8/24

4:52 pm-2:10 am

1 stop9h 18m

$364

AguadillaWashington, D.C.

BQN - IAD

BQNIAD

Aguadilla Borinquen

Wed 8/19

3:10 am-4:07 pm

1 stop12h 57m

Washington, D.C. Dulles Intl

Sun 8/30

4:52 pm-2:10 am

1 stop9h 18m

$370

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 8/7

7:30 am-6:33 pm

1 stop11h 03m

Washington, D.C. Dulles Intl

Tue 8/11

3:03 pm-10:29 pm

1 stop7h 26m

$376

PonceWashington, D.C.

PSE - IAD

PSEIAD

Ponce Mercedita

Mon 7/20

10:32 am-6:33 pm

1 stop8h 01m

Washington, D.C. Dulles Intl

Mon 7/27

7:18 pm-9:46 am

1 stop14h 28m

$424

AguadillaWashington, D.C.

BQN - IAD

BQNIAD

Aguadilla Borinquen

Sun 8/16

3:10 am-5:14 pm

2 stops14h 04m

Washington, D.C. Dulles Intl

Fri 8/21

4:52 pm-2:10 am

1 stop9h 18m

$438

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 7/23

7:20 am-11:21 am

Nonstop4h 01m

Washington, D.C. Dulles Intl

Fri 7/31

5:24 pm-9:24 pm

Nonstop4h 00m

$446

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 7/9

7:20 am-11:21 am

Nonstop4h 01m

Washington, D.C. Dulles Intl

Tue 7/14

6:33 am-1:45 pm

1 stop7h 12m

$451

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 8/28

2:20 pm-12:30 am

1 stop10h 10m

Washington, D.C. Dulles Intl

Mon 8/31

12:49 pm-11:50 pm

2 stops11h 01m

$456

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Tue 9/1

4:55 pm-8:47 pm

Nonstop3h 52m

Washington, D.C. Dulles Intl

Tue 9/8

6:15 am-1:53 pm

1 stop7h 38m

$474

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Tue 9/1

3:56 pm-12:44 am

1 stop8h 48m

Washington, D.C. Dulles Intl

Wed 9/9

12:49 pm-11:50 pm

2 stops11h 01m

$480

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/22

Showing 1-10 of 41 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, January is the cheapest month in which you can book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport (average of $37). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $279). 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 June 24, 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.

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 June 24, 2026.

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

How far ahead should I book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

Booking 9 days in advance of your planned departure date is, on average, the best time to get cheap flights from Puerto Rico to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 June 24, 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
9,878 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
9,878 reviews
United Airlines
7.4
Good
9,878 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
Frontier
5.6
Fair
2,869 reviews
United Airlines
7.4
Good
9,878 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

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 ($138), 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 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 $180. On average you can expect to pay $436. The most popular route, (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl), can usually be booked for $357.

  • 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, January is the cheapest month in which you can book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport (average of $37). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $279). 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
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Falls Church
Laurel
Fredericksburg
Hanover
Chantilly
Manassas
Waldorf
Silver Spring
Largo
Clinton

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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 June 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$76Average$161FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$234Average$413FlexibilityNo cancel feeOn-time69%

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