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$79+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJU
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Round-trip from

$153
(Cheapflightsfares)

One-way from

$79
(Cheapflightsfares)

Popular in

December

Cheapest in

March

Average price

$384

Good round-trip deal

$296 or less

Good one-way deal

$178 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. 11% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 29, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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.
Sun 5/2512:10 pmIAD - SJU
Nonstop3h 52mFrontier
Thu 5/297:20 amSJU - IAD
Nonstop3h 55mFrontier
Deal found 4/29$153
This American Airlines deal was found by Cheapflights users on 4/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/288:02 pmIAD - SJU
1 stop15h 08mAmerican Airlines
Wed 6/47:15 amSJU - IAD
1 stop16h 47mAmerican Airlines
Deal found 4/28$255
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Sun 6/18:40 amIAD - SJU
Nonstop3h 54mUnited Airlines
Wed 6/41:05 amSJU - IAD
1 stop6h 14mUnited Airlines
Deal found 4/29$281
This Delta deal was found by Cheapflights users on 4/29. 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.
Sat 5/241:20 pmIAD - SJU
1 stop9h 27mDelta
Thu 5/295:43 pmSJU - IAD
1 stop6h 45mDelta
Deal found 4/29$285
This Frontier deal was found by Cheapflights users on 4/29. 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 5/185:26 pmIAD - BQN
1 stop8h 31mFrontier
Sat 5/242:59 amBQN - IAD
1 stop9h 33mFrontier
Deal found 4/29$308
This CheapOair deal was found by Cheapflights users on 4/29. 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 5/231:17 pmIAD - PSE
1 stop19h 54mFrontier
Mon 5/269:25 amPSE - IAD
1 stop27h 50mFrontier
Deal found 4/29$319
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Sun 6/111:54 amIAD - SJU
3 stops45h 49mMultiple Airlines
Fri 6/68:12 pmSJU - IAD
2 stops18h 20mMultiple Airlines
Deal found 4/29$342
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 5/293:40 pmIAD - BQN
1 stop7h 29mUnited Airlines
Wed 6/412:15 amBQN - IAD
2 stops14h 13mUnited Airlines
Deal found 4/29$345
This United deal was found by Cheapflights users on 4/28. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/306:15 amIAD - CPX
2 stops10h 36mMultiple Airlines
Mon 7/712:31 pmCPX - IAD
1 stop8h 23mMultiple Airlines
Deal found 4/28$827
This United deal was found by Cheapflights users on 4/29. 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.
Sun 6/225:28 pmIAD - VQS
1 stop17h 35mMultiple Airlines
Thu 6/262:45 pmVQS - IAD
1 stop6h 09mMultiple Airlines
Deal found 4/29$829
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 5/278:40 amIAD - MAZ
1 stop7h 09mUnited Airlines
Tue 6/32:00 pmMAZ - IAD
1 stop6h 54mUnited Airlines
Deal found 4/29$1,441
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/147:59 pmIAD - CPX
2 stops45h 22mUnited Airlines
Sun 5/1810:48 amCPX - IAD
2 stops29h 42mUnited Airlines
Deal found 4/28$1,719

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 April 29, 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 5/25

12:10 pm-4:02 pm

Nonstop3h 52m

San Juan Luis Munoz Marin Intl

Thu 5/29

7:20 am-11:15 am

Nonstop3h 55m

$153

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Wed 5/28

8:02 pm-11:10 am

1 stop15h 08m

San Juan Luis Munoz Marin Intl

Wed 6/4

7:15 am-12:02 am

1 stop16h 47m

$255

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 6/1

8:40 am-12:34 pm

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Wed 6/4

1:05 am-7:19 am

1 stop6h 14m

$281

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 5/24

1:20 pm-10:47 pm

1 stop9h 27m

San Juan Luis Munoz Marin Intl

Thu 5/29

5:43 pm-12:28 am

1 stop6h 45m

$285

Washington, D.C.Aguadilla

IAD - BQN

IADBQN

Washington, D.C. Dulles Intl

Sun 5/18

5:26 pm-1:57 am

1 stop8h 31m

Aguadilla Borinquen

Sat 5/24

2:59 am-12:32 pm

1 stop9h 33m

$308

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Fri 5/23

1:17 pm-9:11 am

1 stop19h 54m

Ponce Mercedita

Mon 5/26

9:25 am-1:15 pm

1 stop27h 50m

$319

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 6/1

11:54 am-9:43 am

3 stops45h 49m

San Juan Luis Munoz Marin Intl

Fri 6/6

8:12 pm-2:32 pm

2 stops18h 20m

$342

Washington, D.C.Aguadilla

IAD - BQN

IADBQN

Washington, D.C. Dulles Intl

Thu 5/29

3:40 pm-11:09 pm

1 stop7h 29m

Aguadilla Borinquen

Wed 6/4

12:15 am-2:28 pm

2 stops14h 13m

$345

Washington, D.C.Culebra

IAD - CPX

IADCPX

Washington, D.C. Dulles Intl

Mon 6/30

6:15 am-4:51 pm

2 stops10h 36m

Culebra

Mon 7/7

12:31 pm-8:54 pm

1 stop8h 23m

$827

Washington, D.C.Vieques

IAD - VQS

IADVQS

Washington, D.C. Dulles Intl

Sun 6/22

5:28 pm-11:03 am

1 stop17h 35m

Vieques

Thu 6/26

2:45 pm-8:54 pm

1 stop6h 09m

$829

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 April 29, 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.

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 April 29, 2025.

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

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 April 29, 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
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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.
Frontier
6.0
Okay
3,284 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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 Frontier ($79), Delta ($113), and United Airlines ($123).

  • 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 (84%), United Airlines (84%), Brussels Airlines (82%).

  • 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 $89. On average you can expect to pay $829. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $166.

  • 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
Reagan-National to Luis Munoz Marin Intl flights
Baltimore to Luis Munoz Marin Intl flights
Dulles Intl to Punta Cana flights
Dulles Intl to Montego Bay flights
Baltimore to Montego Bay flights
Dulles Intl to Oranjestad flights
Dulles Intl to Saint Thomas Island flights
Baltimore to Punta Cana flights
Reagan-National to Montego Bay flights
Reagan-National to Nassau flights
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Baltimore to Oranjestad flights
Reagan-National to Saint Thomas Island flights
Baltimore to Saint Thomas Island flights
Baltimore to Nassau flights
Dulles Intl to Providenciales flights
Dulles Intl to Castries flights
Reagan-National to Oranjestad flights
Baltimore to Santo Domingo flights
Dulles Intl to Santo Domingo flights
Dulles Intl to Simpson Bay flights
Baltimore to Simpson Bay flights
Reagan-National to Providenciales flights
Dulles Intl to Willemstad flights
Baltimore to Castries flights
Baltimore to Bridgetown flights
Baltimore to Providenciales flights
Reagan-National to Castries flights
Reagan-National to Bridgetown flights
Reagan-National to Simpson Bay flights
Reagan-National to Santo Domingo flights
Dulles Intl to Bridgetown flights
Reagan-National to Willemstad flights
Reagan-National to Port of Spain flights
Baltimore to Willemstad flights
Dulles Intl to George Town flights
Dulles Intl to Port of Spain flights
Dulles Intl to Kingston flights
Baltimore to George Town flights
Baltimore to Kingston flights
Dulles Intl to St. John's flights
Reagan-National to Puerto Plata flights
Reagan-National to Kingston flights
Reagan-National to Christiansted flights
Baltimore to Port of Spain flights
Baltimore to Christiansted flights
Reagan-National to George Town 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$265FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$96Average$279FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$203Average$385FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$224Average$586FlexibilityNo cancel feeOn-time71%
DeltaCheapest$238Average$391FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$300Average$483FlexibilityNo cancel feeOn-time69%

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