HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Puerto Rico

$85+ Cheap flights from Dulles Intl (IAD) to Puerto Rico

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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJU
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Puerto Rico 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.

Find flight deals from Dulles Intl to Puerto Rico

Cheapest flights from Dulles Intl to Puerto Rico
Explore the most affordable flight options available from Dulles Intl to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Mon 11/248:06 pmIAD - SJU
Nonstop3h 47mFrontier
Thu 12/46:30 amSJU - IAD
Nonstop4h 13mFrontier
Deal found 11/12$188
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Sun 12/1412:04 pmIAD - SJU
1 stop10h 46mFrontier
Sat 12/204:18 pmSJU - IAD
Nonstop4h 13mFrontier
Deal found 11/11$189
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 12/117:18 pmIAD - SJU
2 stops14h 14mFrontier
Thu 12/183:21 pmSJU - IAD
1 stop22h 53mFrontier
Deal found 11/12$191
This Frontier deal was found by Cheapflights users on 11/12. 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 11/288:06 pmIAD - SJU
Nonstop3h 47mFrontier
Sat 11/293:58 pmSJU - IAD
Nonstop4h 03mFrontier
Deal found 11/12$193
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Sat 11/297:56 pmIAD - SJU
Nonstop3h 47mFrontier
Thu 12/116:30 amSJU - IAD
Nonstop4h 13mFrontier
Deal found 11/12$197
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Sun 12/1410:38 amIAD - SJU
Nonstop3h 54mFrontier
Mon 12/227:25 amSJU - IAD
1 stop11h 51mFrontier
Deal found 11/12$199
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 11/288:06 pmIAD - SJU
Nonstop3h 47mFrontier
Sun 12/76:30 amSJU - IAD
Nonstop4h 13mFrontier
Deal found 11/11$200
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Sun 12/1410:38 amIAD - SJU
Nonstop3h 54mFrontier
Sun 12/214:18 pmSJU - IAD
Nonstop4h 13mFrontier
Deal found 11/12$201
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Sun 12/1412:04 pmIAD - SJU
1 stop6h 46mMultiple Airlines
Fri 12/193:54 amSJU - IAD
1 stop7h 15mMultiple Airlines
Deal found 11/11$202
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 12/1110:38 amIAD - SJU
Nonstop3h 54mFrontier
Fri 12/197:30 amSJU - IAD
1 stop11h 46mFrontier
Deal found 11/12$203
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Mon 11/248:40 amIAD - BQN
1 stop17h 23mFrontier
Wed 11/263:55 amBQN - IAD
1 stop7h 22mFrontier
Deal found 11/12$224
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 12/59:20 pmIAD - BQN
1 stop28h 38mMultiple Airlines
Sun 12/143:55 amBQN - IAD
2 stops12h 15mMultiple Airlines
Deal found 11/12$287

Cheap flight deals from Dulles Intl to Puerto Rico

Keep the following information in mind while searching for Dulles Intl to Puerto Rico flight deals. Data was last updated November 13, 2025.

Round-trip from

$188
(Kiwi.com)

One-way from

$85
(Kiwi.com)

Popular in

December

Cheapest in

July

Average price

$360

Good round-trip deal

$308 or less

Good one-way deal

$77 or less
From Washington, D.C. Dulles Intl to Puerto Rico
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Puerto Rico
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Puerto Rico.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Puerto Rico.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Puerto Rico 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 November 13, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Puerto Rico that are best for you.

Fly from

Dulles Intl

Fly to

Puerto Rico

Route

Depart

Return

Price

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 1/25

12:40 pm-8:57 pm

1 stop7h 17m

San Juan Luis Munoz Marin Intl

Thu 1/29

6:27 pm-12:24 am

1 stop6h 57m

$195

Washington, D.C.Aguadilla

IAD - BQN

IADBQN

Washington, D.C. Dulles Intl

Sat 1/10

3:33 pm-2:58 am

1 stop10h 25m

Aguadilla Borinquen

Fri 1/16

3:55 am-2:48 pm

1 stop11h 53m

$280

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 11/24

6:00 am-5:26 pm

1 stop10h 26m

San Juan Luis Munoz Marin Intl

Tue 12/9

1:55 pm-9:29 pm

1 stop8h 34m

$282

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sat 1/17

10:23 pm-9:50 am

1 stop10h 27m

Ponce Mercedita

Mon 1/19

10:50 am-9:33 pm

1 stop11h 43m

$286

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sat 1/17

10:23 pm-9:50 am

1 stop10h 27m

Ponce Mercedita

Sat 1/24

10:50 am-2:42 pm

1 stop28h 52m

$286

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Thu 1/15

10:23 pm-9:50 am

1 stop10h 27m

Ponce Mercedita

Mon 1/19

10:50 am-9:33 pm

1 stop11h 43m

$286

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sat 1/10

9:43 am-9:55 am

1 stop23h 12m

Ponce Mercedita

Sat 1/17

10:50 am-9:33 pm

1 stop11h 43m

$286

Washington, D.C.Aguadilla

IAD - BQN

IADBQN

Washington, D.C. Dulles Intl

Fri 12/5

9:20 pm-2:58 am

1 stop28h 38m

Aguadilla Borinquen

Fri 12/12

3:55 am-8:24 pm

1 stop17h 29m

$289

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 1/25

8:27 am-1:17 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Thu 1/29

2:15 pm-9:13 pm

1 stop7h 58m

$295

Washington, D.C.Aguadilla

IAD - BQN

IADBQN

Washington, D.C. Dulles Intl

Tue 2/10

8:20 am-11:57 pm

2 stops14h 37m

Aguadilla Borinquen

Wed 2/18

1:09 am-7:19 am

1 stop7h 10m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 60 results
1
2
3
...
6

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

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

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

Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Puerto Rico (average of $86). Flying from Washington, D.C. Dulles Intl Airport to Puerto Rico in September is currently the most expensive (average of $272). 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 IAD to PR?

Find hourly flight availability from Dulles Intl to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Puerto Rico at noon. Doing so could potentially save you 45% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Puerto Rico?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Puerto Rico. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Puerto Rico flight should consider departing on Friday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Explore weekly flight availability from Dulles Intl to Puerto Rico. 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 November 13, 2025.

The most flights from IAD to PR0 are scheduled on a Thursday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated November 13, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Puerto Rico, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,017 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,051 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Spirit Airlines
6.3
Okay
8,138 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.8
Fair
3,109 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Puerto Rico. 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 Washington, D.C. Dulles Intl Airport to Puerto Rico?

    Airlines like Delta, Frontier, and United Airlines fly from Washington, D.C. Dulles Intl Airport to Puerto Rico in about 3h 50m. The time it takes to get you to your destination can typically vary by up to 6h 35m. There are 1573 mi between Washington, D.C. Dulles Intl Airport and Puerto Rico. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Puerto Rico are Delta ($93), Frontier ($143), and United Airlines ($150).

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

    The most popular route from Washington, D.C. Dulles Intl Airport to Puerto Rico is Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl. You may also consider Washington, D.C. Dulles Intl - Ponce Mercedita or Washington, D.C. Dulles Intl - Aguadilla Borinquen.

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

    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 Washington, D.C. Dulles Intl Airport to Puerto Rico on time: Air Canada (61%), United Airlines (61%), Frontier (57%).

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Puerto Rico is $69. On average you can expect to pay $295. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $148.

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

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

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

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

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

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

    Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Puerto Rico (average of $86). Flying from Washington, D.C. Dulles Intl Airport to Puerto Rico in September is currently the most expensive (average of $272). 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

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 Dulles Intl to Puerto Rico

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

Top 6 airlines flying from Dulles Intl to Puerto Rico

Discover the top 6 airlines that operate flights from Dulles Intl to Puerto Rico. 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$291FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$145Average$484FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$153Average$288FlexibilityNo cancel feeOn-time65%
DeltaCheapest$158Average$350FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$161Average$386FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$273Average$480FlexibilityNo 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.