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$91+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJU
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This Expedia deal was found by Cheapflights users on 12/1. 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.
Thu 12/1110:38 amIAD - SJU
Nonstop3h 54mFrontier
Sun 12/144:59 pmSJU - IAD
1 stop23h 06mFrontier
Deal found 12/1$181
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Thu 12/1110:38 amIAD - SJU
Nonstop3h 54mMultiple Airlines
Mon 12/156:14 pmSJU - IAD
2 stops45h 15mMultiple Airlines
Deal found 12/2$182
This Frontier deal was found by Cheapflights users on 12/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/710:38 amIAD - SJU
Nonstop3h 54mFrontier
Thu 12/116:30 amSJU - IAD
Nonstop4h 13mFrontier
Deal found 12/2$183
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Thu 12/1110:38 amIAD - SJU
Nonstop3h 54mFrontier
Mon 12/151:59 amSJU - IAD
2 stops37h 30mFrontier
Deal found 12/2$184
This Frontier deal was found by Cheapflights users on 12/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:26 amIAD - SJU
1 stop13h 30mFrontier
Thu 12/116:30 amSJU - IAD
Nonstop4h 13mFrontier
Deal found 12/2$185
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 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 54mMultiple Airlines
Mon 12/151:22 pmSJU - IAD
2 stops50h 07mMultiple Airlines
Deal found 12/3$186
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 12/1410:38 amIAD - SJU
Nonstop3h 54mMultiple Airlines
Wed 12/246:28 pmSJU - IAD
2 stops18h 10mMultiple Airlines
Deal found 12/2$188
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 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
Sun 12/214:21 pmSJU - IAD
1 stop20h 17mMultiple Airlines
Deal found 12/3$189
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:00 amIAD - SJU
2 stops14h 49mFrontier
Thu 12/116:30 amSJU - IAD
Nonstop4h 13mFrontier
Deal found 12/3$190
This CheapOair deal was found by Cheapflights users on 12/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:38 amIAD - SJU
Nonstop3h 54mFrontier
Fri 12/194:18 pmSJU - IAD
Nonstop4h 13mFrontier
Deal found 12/2$191
This CheapOair deal was found by Cheapflights users on 12/4. 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.
Thu 12/1110:38 amIAD - SJU
Nonstop3h 54mFrontier
Mon 12/154:31 pmSJU - IAD
1 stop7h 34mFrontier
Deal found 12/4$196
This Frontier deal was found by Cheapflights users on 12/3. 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.
Sat 12/69:20 pmIAD - PSE
1 stop11h 00mFrontier
Sat 12/1310:50 amPSE - IAD
1 stop10h 34mFrontier
Deal found 12/3$252

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 December 4, 2025.

Round-trip from

$179
(Trip.com)

One-way from

$91
(CheapOair)

Popular in

December

Cheapest in

July

Average price

$442

Good round-trip deal

$287 or less

Good one-way deal

$154 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. 10% potential increase in price ($41 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 December 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.
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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 December 4, 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.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Thu 2/26

3:37 pm-9:55 am

1 stop17h 18m

Ponce Mercedita

Sat 3/7

10:50 am-9:13 pm

1 stop11h 23m

$202

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 2/23

6:00 am-2:00 pm

1 stop7h 00m

San Juan Luis Munoz Marin Intl

Thu 2/26

6:27 pm-12:24 am

1 stop6h 57m

$225

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sat 1/17

9:33 am-11:20 am

1 stop24h 47m

Ponce Mercedita

Sat 1/24

1:50 pm-8:33 am

1 stop19h 43m

$234

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 2/1

8:27 am-1:17 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Fri 2/6

8:35 am-5:35 pm

1 stop10h 00m

$247

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Wed 1/28

6:00 am-1:06 pm

1 stop6h 06m

San Juan Luis Munoz Marin Intl

Thu 2/5

7:30 am-2:45 pm

1 stop8h 15m

$251

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 1/31

12:23 pm-11:57 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

Wed 2/4

7:30 am-2:45 pm

1 stop8h 15m

$251

Washington, D.C.Aguadilla

IAD - BQN

IADBQN

Washington, D.C. Dulles Intl

Sun 1/11

8:35 am-10:57 am

1 stop25h 22m

Aguadilla Borinquen

Fri 1/16

3:48 am-8:04 am

1 stop29h 16m

$254

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Fri 1/16

8:53 pm-12:05 pm

1 stop14h 12m

Ponce Mercedita

Sat 1/24

1:50 pm-8:33 am

1 stop19h 43m

$264

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sun 12/14

9:20 pm-9:55 am

1 stop11h 35m

Ponce Mercedita

Sun 12/21

12:29 pm-9:03 pm

1 stop9h 34m

$275

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Fri 12/12

9:20 pm-9:55 am

1 stop11h 35m

Ponce Mercedita

Sun 12/14

10:20 am-8:24 pm

1 stop11h 04m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 60 results
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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, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Puerto Rico (average of $87). 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 December 4, 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. Tuesday 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 December 4, 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).

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

About 18% of weekly flights between Washington, D.C. and Puerto Rico have experienced delays in the past year, with the average delay time being 120 minutes.

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

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night 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 Thursday 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 15% 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 December 4, 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
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
9,066 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
11,047 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
8,157 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
3,091 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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 Frontier, Delta, 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 13h 28m. 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 ($75), Delta ($112), and American Airlines ($128).

  • 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 (74%), United Airlines (74%), Brussels Airlines (58%).

  • 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 $108. On average you can expect to pay $644. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $178.

  • 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 $87). 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

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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
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Dulles Intl to Saint Thomas Island flights
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Reagan-National to Saint Thomas Island flights
Dulles Intl to Simpson Bay flights
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Dulles Intl to Santo Domingo flights
Baltimore to Providenciales flights
Reagan-National to Providenciales flights
Baltimore to Nassau flights
Reagan-National to Montego Bay flights
Baltimore to Santo Domingo flights
Reagan-National to Santo Domingo flights
Reagan-National to Simpson Bay flights
Dulles Intl to Castries flights
Dulles Intl to Willemstad flights
Baltimore to Simpson Bay flights
Dulles Intl to Bridgetown flights
Baltimore to Willemstad flights
Baltimore to George Town flights
Reagan-National to Willemstad flights
Dulles Intl to George Town flights
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Baltimore to Castries flights
Reagan-National to Castries flights
Dulles Intl to Christiansted flights
Baltimore to Bridgetown flights
Reagan-National to George Town flights
Dulles Intl to Kingston flights
Reagan-National to Bridgetown flights
Reagan-National to Christiansted flights
Dulles Intl to Port of Spain flights
Baltimore to Christiansted flights
Reagan-National to Kingston flights
Baltimore to Kingston flights
Dulles Intl to St. John's flights
Baltimore to Port of Spain flights
Reagan-National 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$290FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$145Average$489FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$151Average$283FlexibilityNo cancel feeOn-time65%
DeltaCheapest$158Average$355FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$161Average$386FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$270Average$460FlexibilityNo cancel feeOn-time69%

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