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$95+ 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJU
Apr 3 — Apr 101
Fri 4/3
Fri 4/10
1 adult, Economy
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Cheap 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 March 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/4. 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 4/104:01 pm
IAD
-
SJU
1 stop8h 09m
Frontier
Fri 4/173:23 pm
SJU
-
IAD
1 stop9h 13m
Frontier
Deal found 3/4$190
This Frontier deal was found by Cheapflights users on 3/3. 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 4/241:08 pm
IAD
-
SJU
1 stop12h 53m
Frontier
Fri 5/13:23 pm
SJU
-
IAD
1 stop9h 13m
Frontier
Deal found 3/3$192
This Expedia deal was found by Cheapflights users on 3/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/111:36 pm
IAD
-
BQN
1 stop12h 17m
Frontier
Sat 4/182:48 am
BQN
-
IAD
1 stop28h 39m
Frontier
Deal found 3/1$192
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 5/13:08 pm
IAD
-
SJU
1 stop10h 53m
Frontier
Wed 5/133:19 pm
SJU
-
IAD
1 stop16h 08m
Frontier
Deal found 2/28$194
This Kiwi.com deal was found by Cheapflights users on 3/2. 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 5/48:12 am
IAD
-
SJU
1 stop17h 49m
Frontier
Tue 6/29:15 am
SJU
-
IAD
1 stop7h 58m
Frontier
Deal found 3/2$199
This Kiwi.com deal was found by Cheapflights users on 3/2. 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 5/315:28 pm
IAD
-
SJU
1 stop20h 16m
Frontier
Tue 6/29:15 am
SJU
-
IAD
1 stop7h 58m
Frontier
Deal found 3/2$200
This Frontier deal was found by Cheapflights users on 3/1. 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.
Wed 4/83:15 pm
IAD
-
SJU
1 stop9h 37m
Frontier
Thu 4/911:01 am
SJU
-
IAD
1 stop6h 53m
Frontier
Deal found 3/1$208
This CheapOair deal was found by Cheapflights users on 3/3. 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.
Fri 4/241:08 pm
IAD
-
SJU
1 stop12h 53m
Frontier
Thu 4/303:39 pm
SJU
-
IAD
1 stop22h 32m
Frontier
Deal found 3/3$210
This CheapOair deal was found by Cheapflights users on 3/4. 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.
Sun 5/36:20 am
IAD
-
SJU
1 stop7h 48m
Frontier
Wed 5/66:30 am
SJU
-
IAD
1 stop24h 57m
Frontier
Deal found 3/4$211
This Frontier deal was found by Cheapflights users on 2/27. 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 4/171:31 pm
IAD
-
SJU
1 stop12h 30m
Frontier
Sat 4/253:43 pm
SJU
-
IAD
1 stop8h 53m
Frontier
Deal found 2/27$213
This Priceline deal was found by Cheapflights users on 2/27. 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.
Sat 4/118:30 pm
IAD
-
PSE
1 stop19h 12m
Frontier
Fri 4/1711:17 am
PSE
-
IAD
1 stop20h 10m
Frontier
Deal found 2/27$213
This Priceline deal was found by Cheapflights users on 3/4. 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.
Fri 4/171:31 pm
IAD
-
BQN
1 stop12h 12m
Frontier
Sat 4/182:48 am
BQN
-
IAD
1 stop28h 39m
Frontier
Deal found 3/4$213

Find 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 March 4, 2026.

Round-trip from

$190
(Kiwi.com)

One-way from

$95
(Super.com)

Popular in

December

Cheapest in

July

Average price

$323

Good round-trip deal

$269 or less

Good one-way deal

$130 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 ($43 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 March 2026
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.
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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 March 4, 2026.
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

Fly to

Route

Depart

Return

Price

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sat 4/11

8:30 pm-3:42 pm

1 stop19h 12m

Ponce Mercedita

Fri 4/17

11:17 am-7:27 am

1 stop20h 10m

$213

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Thu 5/14

8:09 am-10:36 am

1 stop26h 27m

Ponce Mercedita

Sun 5/17

11:36 am-7:27 am

1 stop19h 51m

$274

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Wed 5/27

5:27 pm-8:56 am

1 stop15h 29m

Ponce Mercedita

Mon 6/1

9:55 am-4:33 pm

1 stop6h 38m

$295

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 4/26

5:24 pm-9:24 pm

Nonstop4h 00m

San Juan Luis Munoz Marin Intl

Sat 5/2

7:20 am-11:21 am

Nonstop4h 01m

$341

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Fri 4/3

8:30 pm-10:50 am

1 stop14h 20m

Ponce Mercedita

Tue 4/7

11:35 am-10:11 am

1 stop22h 36m

$356

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Mon 6/1

5:28 pm-8:56 am

1 stop15h 28m

Ponce Mercedita

Fri 6/5

9:55 am-4:33 pm

1 stop6h 38m

$356

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sat 5/23

11:28 am-8:56 am

1 stop21h 28m

Ponce Mercedita

Wed 5/27

9:55 am-4:32 pm

1 stop6h 37m

$356

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sat 4/4

1:33 pm-3:12 pm

1 stop25h 39m

Ponce Mercedita

Tue 4/7

11:35 am-10:11 am

1 stop22h 36m

$391

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Fri 5/22

5:28 pm-8:56 am

1 stop15h 28m

Ponce Mercedita

Tue 5/26

9:55 am-5:13 pm

1 stop7h 18m

$391

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Thu 4/16

12:35 pm-10:31 am

1 stop21h 56m

Ponce Mercedita

Sun 4/19

11:21 am-7:27 am

1 stop20h 06m

$391

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/1

Showing 1-10 of 60 resultsSorted by cheapest first
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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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Puerto Rico (average of $73). Flying from Washington, D.C. Dulles Intl Airport to Puerto Rico in September is currently the most expensive (average of $268). 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 March 4, 2026.

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 afternoon, which is usually more expensive.

How often are flights from Washington, D.C. to Puerto Rico delayed?

About 20% of weekly flights between Washington, D.C. and Puerto Rico have experienced delays in the past year, with the average delay time being 122 minutes.

What is the most punctual flight time for Washington, D.C. to Puerto Rico flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to Puerto Rico flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.

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 March 4, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Puerto Rico, such as Delta, United Airlines, and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,245 reviews

Entertainment

7.8

Overall

7.9

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

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
8,245 reviews
Delta
7.9
Good
8,245 reviews

Entertainment

7.8

Overall

7.9

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

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
9,382 reviews
Delta
7.9
Good
8,245 reviews

Entertainment

7.8

Overall

7.9

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

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.
JetBlue
7.2
Good
2,896 reviews
Delta
7.9
Good
8,245 reviews

Entertainment

7.8

Overall

7.9

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

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
7.1
Good
11,379 reviews
Delta
7.9
Good
8,245 reviews

Entertainment

7.8

Overall

7.9

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

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
5.7
Fair
3,041 reviews
Delta
7.9
Good
8,245 reviews

Entertainment

7.8

Overall

7.9

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

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 Frontier and United Airlines fly from Washington, D.C. Dulles Intl Airport to Puerto Rico in about 4h. The time it takes to get you to your destination can typically vary by up to 15h 12m. 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 Frontier ($54), Delta ($112), and United Airlines ($122).

  • 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: Frontier (81%), Air Canada (77%), United Airlines (77%).

  • 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 $62. On average you can expect to pay $697. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $222.

  • 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Puerto Rico (average of $73). Flying from Washington, D.C. Dulles Intl Airport to Puerto Rico in September is currently the most expensive (average of $268). 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

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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 March 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$89Average$272FlexibilityNo cancel feeOn-time62%
DeltaCheapest$136Average$324FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$145Average$480FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$151Average$268FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$161Average$421FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$247Average$479FlexibilityNo cancel feeOn-time69%

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