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$108+ 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 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJU
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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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 March 28, 2025.

Round-trip from

$246
(United Airlines)

One-way from

$108
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$331

Good round-trip deal

$279 or less

Good one-way deal

$168 or less
From Washington, D.C. Dulles Intl to Puerto Rico
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One-way flight from Washington, D.C. Dulles Intl to Puerto Rico
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Highest demand for flights based on searches. 10% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Puerto Rico.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Puerto Rico.
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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 March 28, 2025.

This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/58:40 amIAD - SJU
Nonstop3h 54mUnited Airlines
Fri 5/97:25 amSJU - IAD
Nonstop3h 59mUnited Airlines
Deal found 3/27$246
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1012:28 pmIAD - SJU
Nonstop3h 50mFrontier
Tue 6/177:35 amSJU - IAD
Nonstop3h 53mFrontier
Deal found 3/27$265
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/256:00 amIAD - SJU
1 stop6h 45mDelta
Thu 5/291:55 pmSJU - IAD
1 stop8h 59mDelta
Deal found 3/26$270
This CheapOair deal was found by Cheapflights users on 3/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/316:03 pmIAD - PSE
1 stop18h 32mFrontier
Thu 4/31:25 pmPSE - IAD
1 stop27h 40mFrontier
Deal found 3/27$328
This Frontier deal was found by Cheapflights users on 3/27. 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.
Sat 3/295:54 pmIAD - BQN
1 stop8h 02mFrontier
Thu 4/32:47 amBQN - IAD
1 stop7h 13mFrontier
Deal found 3/27$346
This United deal was found by Cheapflights users on 3/27. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/293:47 pmIAD - BQN
1 stop7h 22mUnited Airlines
Mon 5/1212:15 amBQN - IAD
1 stop6h 55mUnited Airlines
Deal found 3/27$375
This CheapOair deal was found by Cheapflights users on 3/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2312:49 pmIAD - SJU
1 stop24h 58mMultiple Airlines
Tue 5/2712:15 pmSJU - IAD
Nonstop3h 55mMultiple Airlines
Deal found 3/27$430
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/275:02 amIAD - SJU
1 stop6h 08mAmerican Airlines
Wed 6/47:15 amSJU - IAD
1 stop16h 47mAmerican Airlines
Deal found 3/27$434
This United deal was found by Cheapflights users on 3/27. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/125:28 pmIAD - VQS
1 stop17h 35mMultiple Airlines
Fri 7/182:45 pmVQS - IAD
1 stop6h 09mMultiple Airlines
Deal found 3/27$794
This Mytrip deal was found by Cheapflights users on 3/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/212:25 pmIAD - BQN
3 stops32h 44mAir Canada
Sun 7/2712:15 amBQN - IAD
3 stops33h 22mAir Canada
Deal found 3/27$1,293
This United Airlines deal was found by Cheapflights users on 3/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/256:48 amIAD - CPX
2 stops10h 03mUnited Airlines
Sat 7/1910:13 amCPX - IAD
2 stops12h 14mUnited Airlines
Deal found 3/26$1,557
This United Airlines deal was found by Cheapflights users on 3/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/256:10 amIAD - VQS
2 stops13h 05mUnited Airlines
Mon 7/212:45 pmVQS - IAD
1 stop6h 09mUnited Airlines
Deal found 3/26$2,363

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 28, 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

Mon 5/5

8:40 am-12:34 pm

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Fri 5/9

7:25 am-11:24 am

Nonstop3h 59m

$246

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 6/10

12:28 pm-4:18 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Tue 6/17

7:35 am-11:28 am

Nonstop3h 53m

$265

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 5/25

6:00 am-12:45 pm

1 stop6h 45m

San Juan Luis Munoz Marin Intl

Thu 5/29

1:55 pm-10:54 pm

1 stop8h 59m

$270

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Mon 3/31

6:03 pm-12:35 pm

1 stop18h 32m

Ponce Mercedita

Thu 4/3

1:25 pm-5:05 pm

1 stop27h 40m

$328

Washington, D.C.Aguadilla

IAD - BQN

IADBQN

Washington, D.C. Dulles Intl

Wed 4/9

5:52 pm-2:09 am

1 stop8h 17m

Aguadilla Borinquen

Wed 4/16

2:59 am-10:55 am

1 stop7h 56m

$346

Washington, D.C.Aguadilla

IAD - BQN

IADBQN

Washington, D.C. Dulles Intl

Tue 4/29

3:47 pm-11:09 pm

1 stop7h 22m

Aguadilla Borinquen

Mon 5/12

12:15 am-7:10 am

1 stop6h 55m

$375

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Fri 5/16

9:42 pm-10:15 am

1 stop12h 33m

San Juan Luis Munoz Marin Intl

Sun 5/18

1:59 am-11:26 am

3 stops33h 27m

$408

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 5/27

5:02 am-11:10 am

1 stop6h 08m

San Juan Luis Munoz Marin Intl

Wed 6/4

7:15 am-12:02 am

1 stop16h 47m

$434

Washington, D.C.Vieques

IAD - VQS

IADVQS

Washington, D.C. Dulles Intl

Sat 7/12

5:28 pm-11:03 am

1 stop17h 35m

Vieques

Fri 7/18

2:45 pm-8:54 pm

1 stop6h 09m

$794

Washington, D.C.Culebra

IAD - CPX

IADCPX

Washington, D.C. Dulles Intl

Wed 6/25

6:48 am-4:51 pm

2 stops10h 03m

Culebra

Sat 7/19

10:13 am-10:27 pm

2 stops12h 14m

$1,557

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Showing 1-10 of 24 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Puerto Rico (average of $254). Flying from Washington, D.C. Dulles Intl Airport to Puerto Rico in December is currently the most expensive (average of $336). 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 28, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Puerto Rico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Puerto Rico ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit Puerto Rico when rainfall is around 2.2 in.

Temperature in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Puerto Rico, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 28, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Puerto Rico, such as Delta, Avelo Airlines and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,896 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Avelo Airlines
7.5
Good
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
8,986 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 United Airlines ($108), Delta ($113), and Frontier ($120).

  • 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 (80%), United Airlines (80%), Brussels 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 $109. On average you can expect to pay $1,037. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $251.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Puerto Rico (average of $254). Flying from Washington, D.C. Dulles Intl Airport to Puerto Rico in December is currently the most expensive (average of $336). 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 Providenciales flights
Baltimore to Saint Thomas Island flights
Dulles Intl to Willemstad flights
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Baltimore to Simpson Bay flights
Dulles Intl to Castries flights
Reagan-National to Providenciales flights
Reagan-National to Simpson Bay flights
Baltimore to Santo Domingo flights
Baltimore to Castries flights
Dulles Intl to Santo Domingo flights
Baltimore to Willemstad flights
Baltimore to Providenciales flights
Reagan-National to Santo Domingo flights
Baltimore to George Town flights
Reagan-National to Castries flights
Baltimore to Bridgetown flights
Reagan-National to Willemstad flights
Dulles Intl to Bridgetown flights
Reagan-National to George Town flights
Dulles Intl to Port of Spain flights
Reagan-National to Kingston flights
Reagan-National to Puerto Plata flights
Dulles Intl to St. John's flights
Reagan-National to Bridgetown flights
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Reagan-National to Port of Spain flights
Dulles Intl to Kingston flights
Baltimore to Kingston flights
Baltimore to St. George's flights
Dulles Intl to Christiansted 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$259FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$96Average$256FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$203Average$385FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$224Average$672FlexibilityNo cancel feeOn-time71%
DeltaCheapest$240Average$387FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$297Average$481FlexibilityNo cancel feeOn-time69%
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