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Dulles Intl

$107+ Cheap flights from San Juan to Dulles Intl (IAD)

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
Jan 21 — Jan 281
Wed 1/21
Wed 1/28
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan to Washington, D.C. Dulles Intl are usually found in July or March, booked 3 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from San Juan to Dulles Intl

Cheapest flights from San Juan to Dulles Intl
Explore the most affordable flight options available from San Juan to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2025.

This Expedia deal was found by Cheapflights users on 12/21. 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.
Wed 12/318:36 pmSJU - IAD
1 stop13h 10mFrontier
Mon 1/58:26 pmIAD - SJU
Nonstop3h 54mFrontier
Deal found 12/21$159
This Kiwi.com deal was found by Cheapflights users on 12/22. 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.
Tue 12/234:07 pmSJU - IAD
Nonstop4h 13mFrontier
Fri 1/28:26 pmIAD - SJU
Nonstop3h 54mFrontier
Deal found 12/22$160
This Frontier deal was found by Cheapflights users on 12/22. 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.
Tue 12/234:07 pmSJU - IAD
Nonstop4h 13mFrontier
Sat 1/38:26 pmIAD - SJU
Nonstop3h 54mFrontier
Deal found 12/22$161
This CheapOair deal was found by Cheapflights users on 12/20. 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 12/214:18 pmSJU - IAD
Nonstop4h 13mFrontier
Sun 12/288:26 pmIAD - SJU
Nonstop3h 54mFrontier
Deal found 12/20$162
This Priceline deal was found by Cheapflights users on 12/20. 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.
Mon 12/224:18 pmSJU - IAD
Nonstop4h 13mFrontier
Thu 1/81:46 pmIAD - SJU
1 stop6h 51mFrontier
Deal found 12/20$165
This CheapOair deal was found by Cheapflights users on 12/19. 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 12/224:18 pmSJU - IAD
Nonstop4h 13mFrontier
Mon 1/52:09 pmIAD - SJU
1 stop27h 29mFrontier
Deal found 12/19$166
This Frontier deal was found by Cheapflights users on 12/20. 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 12/204:18 pmSJU - IAD
Nonstop4h 13mFrontier
Sun 1/48:26 pmIAD - SJU
Nonstop3h 54mFrontier
Deal found 12/20$172
This Priceline deal was found by Cheapflights users on 12/20. 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.
Mon 12/224:18 pmSJU - IAD
Nonstop4h 13mFrontier
Thu 1/19:41 amIAD - SJU
1 stop22h 17mFrontier
Deal found 12/20$177
This CheapOair deal was found by Cheapflights users on 12/21. 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.
Tue 12/234:07 pmSJU - IAD
Nonstop4h 13mFrontier
Thu 1/19:41 amIAD - SJU
1 stop22h 17mFrontier
Deal found 12/21$178
This Frontier deal was found by Cheapflights users on 12/19. 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 12/264:18 pmSJU - IAD
Nonstop4h 13mFrontier
Tue 12/308:15 pmIAD - SJU
Nonstop3h 54mFrontier
Deal found 12/19$183
This Frontier deal was found by Cheapflights users on 12/21. 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.
Tue 12/234:07 pmSJU - IAD
Nonstop4h 13mFrontier
Tue 12/308:15 pmIAD - SJU
Nonstop3h 54mFrontier
Deal found 12/21$184
This Priceline deal was found by Cheapflights users on 12/22. 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 12/264:18 pmSJU - IAD
Nonstop4h 13mFrontier
Sun 12/288:26 pmIAD - SJU
Nonstop3h 54mFrontier
Deal found 12/22$186

Find flight deals from San Juan to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 22, 2025.

Round-trip from

$158
(Frontier)

One-way from

$107
(Kiwi.com)

Popular in

April

Cheapest in

July

Average price

$390
From San Juan to Washington, D.C. Dulles Intl
Search Deals
One-way flight from San Juan to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San Juan to Dulles Intl 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 22, 2025.
Use the filters below to find and compare flights from San Juan to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

San Juan

Fly to

Dulles Intl

Route

Depart

Return

Price

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 1/9

4:07 pm-9:08 am

1 stop18h 01m

Washington, D.C. Dulles Intl

Mon 1/12

7:19 pm-12:13 am

Nonstop3h 54m

$170

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Sat 1/17

6:15 am-2:45 pm

1 stop9h 30m

Washington, D.C. Dulles Intl

Tue 1/20

12:40 pm-11:45 pm

1 stop10h 05m

$251

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 5/13

2:55 pm-11:59 pm

1 stop9h 04m

Washington, D.C. Dulles Intl

Tue 5/19

6:00 am-3:42 pm

1 stop9h 42m

$251

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 1/28

7:30 am-2:45 pm

1 stop8h 15m

Washington, D.C. Dulles Intl

Mon 2/2

6:00 am-5:17 pm

1 stop10h 17m

$251

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 4/1

5:30 pm-12:31 am

1 stop7h 01m

Washington, D.C. Dulles Intl

Wed 4/8

6:00 am-12:54 pm

1 stop6h 54m

$251

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 2/12

6:15 am-2:44 pm

1 stop9h 29m

Washington, D.C. Dulles Intl

Tue 2/17

12:23 pm-11:56 pm

1 stop10h 33m

$251

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 1/16

7:30 am-5:17 pm

1 stop10h 47m

Washington, D.C. Dulles Intl

Mon 1/19

12:23 pm-11:57 pm

1 stop10h 34m

$251

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Sat 1/17

8:10 am-11:15 am

Nonstop4h 05m

Washington, D.C. Dulles Intl

Sat 1/24

5:32 pm-10:22 pm

Nonstop3h 50m

$254

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Tue 3/24

3:22 pm-12:31 am

1 stop9h 09m

Washington, D.C. Dulles Intl

Wed 3/25

6:20 am-2:12 pm

1 stop7h 52m

$275

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 2/4

7:00 pm-4:28 pm

2 stops22h 28m

Washington, D.C. Dulles Intl

Sat 2/14

11:37 am-1:27 pm

2 stops24h 50m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 22 results
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Best time to book a flight from San Juan to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Juan 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 San Juan to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from San Juan to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from San Juan to Dulles Intl. Price data was last updated on December 19, 2025.

To ensure you get the cheapest price possible for a flight from San Juan to Washington, D.C. Dulles Intl Airport, you should look to book at least 3 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Juan to Washington, D.C. Dulles Intl Airport?

Currently, June is the cheapest month in which you can book a flight from San Juan to Washington, D.C. Dulles Intl Airport (average of $59). Flying from San Juan to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $274). 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 SJU to IAD?

Find hourly flight availability from San Juan to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2025.

It’s optimal to fly from San Juan to Washington, D.C. Dulles Intl Airport in the morning. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the afternoon.

Weekly flight availability from San Juan to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from San Juan to Dulles Intl. 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 22, 2025.

The most flights from PR1 to IAD are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from San Juan to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated December 22, 2025.
Read through reviews of airlines operating flights from San Juan to Washington, D.C. Dulles Intl Airport, such as Delta, United Airlines, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Comfort

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
8,013 reviews
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Comfort

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
9,103 reviews
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Comfort

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
3,076 reviews
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Comfort

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 San Juan to Dulles Intl. 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 San Juan to Washington, D.C. Dulles Intl Airport?

    Frontier, Delta, and United Airlines can get you from San Juan to Washington, D.C. Dulles Intl Airport in just under 9h 04m. Your travel time can differ by up to 8h 57m. San Juan and Washington, D.C. Dulles Intl Airport are separated by a distance of 1573 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Juan to Washington, D.C. Dulles Intl Airport round-trip?

    Currently priced at $67, Frontier will fly you from San Juan to Washington, D.C. Dulles Intl Airport and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $196 and $269, respectively. Frontier is 80% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from San Juan to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $59. United Airlines flights start at $128 while deals on Delta start at $142 one-way.

  • What are the most reliable airlines from San Juan to Washington, D.C. Dulles Intl Airport?

    No one likes to see their flight delayed. When booking a flight from San Juan to Washington, D.C. Dulles Intl Airport consider choosing Air Canada (93%), United Airlines (93%) or Frontier (65%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from San Juan to Washington, D.C. Dulles Intl Airport?

    Looking at all options, your cheapest flight can be booked for $88. While the most popular route (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl) can be booked for $178 on average, our data indicates $411 when flying from San Juan to Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from San Juan to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on San Juan to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Juan to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Juan to Dulles Intl.

  • Can I find deals for business class flights from San Juan to Dulles Intl?

    Yes. Cheapflights offers flight deals from San Juan to Dulles Intl 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 San Juan to Washington, D.C. Dulles Intl Airport?

    Currently, June is the cheapest month in which you can book a flight from San Juan to Washington, D.C. Dulles Intl Airport (average of $59). Flying from San Juan to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $274). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Cordova

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Top 3 airlines flying from San Juan to Dulles Intl

Discover the top 3 airlines that operate flights from San Juan to Dulles Intl. 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 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$88Average$246FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$216Average$427FlexibilityNo cancel feeOn-time69%
DeltaCheapest$269Average$431FlexibilityNo cancel feeOn-timeN/A

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