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Dulles Intl

$108+ 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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
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 August, booked 29 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap 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 November 5, 2025.

Round-trip from

$158
(CheapOair)

One-way from

$108
(United Airlines)

Popular in

April

Cheapest in

July

Average price

$353
From San Juan to Washington, D.C. Dulles Intl
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One-way flight from San Juan to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 8% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 5, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Thu 11/133:45 pmSJU - IAD
Nonstop3h 56mFrontier
Sun 11/167:26 pmIAD - SJU
Nonstop3h 52mFrontier
Deal found 11/4$166
This Priceline deal was found by Cheapflights users on 11/5. 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 11/214:08 pmSJU - IAD
Nonstop4h 03mFrontier
Sun 11/238:06 pmIAD - SJU
Nonstop3h 47mFrontier
Deal found 11/5$170
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Tue 12/234:07 pmSJU - IAD
Nonstop4h 13mFrontier
Tue 12/305:37 pmIAD - SJU
1 stop29h 17mFrontier
Deal found 11/4$180
This CheapOair deal was found by Cheapflights users on 11/4. 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 12/46:30 amSJU - IAD
Nonstop4h 13mFrontier
Thu 12/1110:38 amIAD - SJU
Nonstop3h 54mFrontier
Deal found 11/4$181
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Tue 11/259:30 pmSJU - IAD
1 stop15h 22mFrontier
Sun 11/308:06 pmIAD - SJU
Nonstop3h 47mFrontier
Deal found 11/4$195
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:30 amSJU - IAD
Nonstop4h 13mFrontier
Sun 12/1410:38 amIAD - SJU
Nonstop3h 54mFrontier
Deal found 11/4$201
This eDestinos deal was found by Cheapflights users on 11/5. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:01 amSJU - IAD
1 stop18h 58mFrontier
Sat 11/297:56 pmIAD - SJU
Nonstop3h 47mFrontier
Deal found 11/5$203
This eDestinos deal was found by Cheapflights users on 11/4. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/223:59 amSJU - IAD
1 stop28h 46mFrontier
Sun 11/308:06 pmIAD - SJU
Nonstop3h 47mFrontier
Deal found 11/4$204

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 November 5, 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

Thu 1/15

2:15 pm-8:37 pm

1 stop7h 22m

Washington, D.C. Dulles Intl

Sun 1/18

9:00 am-5:17 pm

1 stop7h 17m

$259

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 1/21

7:30 am-2:47 pm

1 stop8h 17m

Washington, D.C. Dulles Intl

Sun 1/25

12:23 pm-11:59 pm

1 stop10h 36m

$260

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 12/25

3:44 am-8:39 pm

1 stop17h 55m

Washington, D.C. Dulles Intl

Tue 12/30

5:37 pm-11:54 pm

1 stop29h 17m

$282

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 12/25

3:44 am-8:39 pm

1 stop17h 55m

Washington, D.C. Dulles Intl

Wed 12/31

6:05 am-11:54 pm

1 stop16h 49m

$285

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Sat 2/14

6:15 am-3:37 pm

1 stop10h 22m

Washington, D.C. Dulles Intl

Sat 2/21

12:23 pm-11:58 pm

1 stop10h 35m

$299

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 12/25

7:00 am-4:23 pm

1 stop10h 23m

Washington, D.C. Dulles Intl

Thu 1/1

6:00 am-12:57 pm

1 stop5h 57m

$313

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 3/20

7:10 am-11:15 am

Nonstop4h 05m

Washington, D.C. Dulles Intl

Mon 3/23

5:32 pm-9:22 pm

Nonstop3h 50m

$318

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 12/26

4:18 pm-7:31 pm

Nonstop4h 13m

Washington, D.C. Dulles Intl

Tue 12/30

8:15 pm-1:09 am

Nonstop3h 54m

$335

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Tue 12/23

8:30 am-11:35 am

Nonstop4h 05m

Washington, D.C. Dulles Intl

Wed 12/31

5:32 pm-10:22 pm

Nonstop3h 50m

$343

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Tue 1/27

3:55 pm-12:24 am

1 stop9h 29m

Washington, D.C. Dulles Intl

Fri 1/30

12:23 pm-11:59 pm

1 stop10h 36m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

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 October 31, 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 29 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 November 5, 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 26% on the cost of your flight, compared to a flight in the evening.

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 November 5, 2025.

The most flights from PR1 to IAD are scheduled on a Monday (4 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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 November 5, 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
8,004 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

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
8,004 reviews
Delta
7.9
Good
8,004 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

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
9,004 reviews
Delta
7.9
Good
8,004 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

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
3,116 reviews
Delta
7.9
Good
8,004 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

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?

    Delta can get you from San Juan to Washington, D.C. Dulles Intl Airport in just under 7h 22m. Your travel time can differ by up to . San Juan and Washington, D.C. Dulles Intl Airport are separated by a distance of 1573 mi.

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

    Currently priced at $85, 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 $235 and $269, respectively. Frontier is 76% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 (97%), United Airlines (97%) or Frontier (43%) 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 $77. While the most popular route (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl) can be booked for $185 on average, our data indicates $389 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
Tysons
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

Browse thousands of different options on Cheapflights for your next trip

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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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$85Average$227FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$235Average$434FlexibilityNo cancel feeOn-time69%
DeltaCheapest$269Average$431FlexibilityNo cancel feeOn-timeN/A

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