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$92+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJU
Feb 4 — Feb 111
Wed 2/4
Wed 2/11
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 January 5, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/4. 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.
Mon 2/21:31 pmIAD - SJU
1 stop9h 28mFrontier
Wed 2/115:25 pmSJU - IAD
1 stop17h 00mFrontier
Deal found 1/4$180
This Frontier deal was found by Cheapflights users on 1/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/107:05 pmIAD - SJU
Nonstop3h 54mFrontier
Sun 1/115:45 amSJU - IAD
1 stop8h 16mFrontier
Deal found 1/4$181
This Frontier deal was found by Cheapflights users on 1/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/21:31 pmIAD - SJU
1 stop9h 28mFrontier
Mon 2/98:15 amSJU - IAD
1 stop7h 48mFrontier
Deal found 1/4$182
This Priceline deal was found by Cheapflights users on 1/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/179:33 amIAD - PSE
1 stop24h 47mFrontier
Sat 1/241:50 pmPSE - IAD
1 stop19h 43mFrontier
Deal found 1/3$182
This Kiwi.com deal was found by Cheapflights users on 1/2. 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 2/238:54 amIAD - SJU
1 stop14h 49mFrontier
Sat 2/285:25 pmSJU - IAD
1 stop17h 00mFrontier
Deal found 1/2$183
This Frontier deal was found by Cheapflights users on 1/3. 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.
Sun 1/117:19 pmIAD - SJU
Nonstop3h 54mFrontier
Fri 1/166:00 amSJU - IAD
1 stop8h 03mFrontier
Deal found 1/3$184
This CheapOair deal was found by Cheapflights users on 1/2. 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.
Fri 1/98:40 amIAD - SJU
1 stop13h 46mFrontier
Fri 1/163:11 pmSJU - IAD
Nonstop4h 08mFrontier
Deal found 1/2$185
This Frontier deal was found by Cheapflights users on 1/2. 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.
Fri 2/208:20 pmIAD - SJU
Nonstop3h 45mFrontier
Mon 2/236:00 amSJU - IAD
1 stop13h 07mFrontier
Deal found 1/2$186
This Cheapflightsfares deal was found by Cheapflights users on 1/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/97:19 pmIAD - SJU
Nonstop3h 54mFrontier
Sat 1/1712:14 pmSJU - IAD
Nonstop4h 08mFrontier
Deal found 1/4$188
This Kiwi.com deal was found by Cheapflights users on 1/3. 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.
Mon 2/91:31 pmIAD - SJU
1 stop9h 02mMultiple Airlines
Fri 2/134:17 pmSJU - IAD
Nonstop4h 08mMultiple Airlines
Deal found 1/3$189
This Kiwi.com deal was found by Cheapflights users on 1/4. 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.
Mon 2/25:33 pmIAD - SJU
2 stops23h 17mFrontier
Fri 2/134:17 pmSJU - IAD
Nonstop4h 08mFrontier
Deal found 1/4$190
This CheapOair deal was found by Cheapflights users on 1/4. 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.
Mon 2/238:20 pmIAD - SJU
Nonstop3h 45mFrontier
Wed 2/255:25 pmSJU - IAD
1 stop17h 00mFrontier
Deal found 1/4$191

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 January 5, 2026.

Round-trip from

$178
(Kiwi.com)

One-way from

$92
(CheapOair)

Popular in

December

Cheapest in

July

Average price

$335

Good round-trip deal

$294 or less

Good one-way deal

$136 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 ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 5, 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

Dulles Intl

Fly to

Puerto Rico

Route

Depart

Return

Price

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

$203

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Wed 4/1

9:58 pm-8:55 am

1 stop10h 57m

Ponce Mercedita

Tue 4/7

10:50 am-9:13 pm

1 stop10h 23m

$209

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Wed 4/1

9:58 pm-8:55 am

1 stop10h 57m

Ponce Mercedita

Thu 4/9

10:50 am-9:13 pm

1 stop10h 23m

$209

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Fri 1/23

9:35 am-12:52 pm

1 stop26h 17m

Ponce Mercedita

Sat 1/31

1:50 pm-8:33 am

1 stop19h 43m

$234

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Fri 2/27

8:15 am-1:46 pm

1 stop28h 31m

Ponce Mercedita

Sat 3/7

12:35 pm-6:24 am

1 stop18h 49m

$237

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 2/3

6:00 am-2:40 pm

1 stop7h 40m

San Juan Luis Munoz Marin Intl

Thu 2/5

5:50 pm-8:55 pm

Nonstop4h 05m

$248

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 1/19

5:32 pm-10:22 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Thu 1/22

8:35 am-4:00 pm

1 stop8h 25m

$248

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 3/9

1:19 pm-11:59 pm

1 stop10h 40m

San Juan Luis Munoz Marin Intl

Thu 3/12

6:15 am-2:39 pm

1 stop8h 24m

$252

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 2/21

12:35 pm-11:58 pm

1 stop10h 23m

San Juan Luis Munoz Marin Intl

Wed 2/25

7:30 am-2:45 pm

1 stop8h 15m

$252

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 3/3

10:08 am-5:27 pm

1 stop6h 19m

San Juan Luis Munoz Marin Intl

Tue 3/10

5:30 pm-12:31 am

1 stop7h 01m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

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 $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 January 5, 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 44% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 January 5, 2026.

The most flights from IAD to PR0 are scheduled on a Friday (6 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

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

About 19% 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 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 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 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 January 5, 2026.
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
8,017 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

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
8,017 reviews
Delta
7.9
Good
8,017 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

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
9,138 reviews
Delta
7.9
Good
8,017 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

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
11,079 reviews
Delta
7.9
Good
8,017 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

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
8,266 reviews
Delta
7.9
Good
8,017 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

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
5.7
Fair
3,064 reviews
Delta
7.9
Good
8,017 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

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, United Airlines, and Delta fly from Washington, D.C. Dulles Intl Airport to Puerto Rico in about 7h 40m. The time it takes to get you to your destination can typically vary by up to 17h 07m. 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 ($64), American Airlines ($128), and United Airlines ($130).

  • 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 (73%), United Airlines (73%), Brussels Airlines (62%).

  • 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 $60. On average you can expect to pay $641. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $144.

  • 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

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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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Baltimore to Providenciales flights
Reagan-National to Simpson Bay flights
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Baltimore to Castries flights
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Baltimore to Willemstad flights
Reagan-National to Willemstad flights
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Reagan-National to Santo Domingo flights
Reagan-National to George Town flights
Dulles Intl to Bridgetown flights
Baltimore to Bridgetown flights
Reagan-National to Bridgetown flights
Dulles Intl to Port of Spain flights
Reagan-National to St. John's flights
Reagan-National to Port of Spain flights
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Dulles Intl to Kingston flights
Baltimore to Christiansted flights
Baltimore to Port of Spain flights
Reagan-National to Christiansted flights
Baltimore to Kingston flights
Reagan-National to Kingston flights
Baltimore to St. John's 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 January 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$98Average$285FlexibilityNo cancel feeOn-time62%
DeltaCheapest$148Average$351FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$151Average$283FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$168Average$412FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$219Average$487FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$267Average$489FlexibilityNo cancel feeOn-time69%

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