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Dulles Intl

$97+ Cheap flights from Luis Munoz Marin Intl (SJU) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Find cheap flights from Luis Munoz Marin Intl to Dulles Intl with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl are usually found in January or February, booked 3 days in advance, depart on a Thursday or Friday and return on a Sunday

Cheap flight deals from Luis Munoz Marin Intl to Dulles Intl

Cheapest flights from Luis Munoz Marin Intl to Dulles Intl
Explore the most affordable flight options available from Luis Munoz Marin Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Orbitz deal was found by Cheapflights users on 1/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/144:17 pm
SJU
-
IAD
Nonstop4h 08m
Frontier
Fri 2/208:20 pm
IAD
-
SJU
Nonstop3h 45m
Frontier
Deal found 1/27$97
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/134:17 pm
SJU
-
IAD
Nonstop4h 08m
Frontier
Mon 2/168:20 pm
IAD
-
SJU
Nonstop3h 45m
Frontier
Deal found 1/26$113
This Frontier deal was found by Cheapflights users on 1/27. 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.
Fri 2/204:17 pm
SJU
-
IAD
Nonstop4h 08m
Frontier
Mon 2/238:20 pm
IAD
-
SJU
Nonstop3h 45m
Frontier
Deal found 1/27$118
This Frontier deal was found by Cheapflights users on 1/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/253:53 am
SJU
-
IAD
1 stop6h 32m
Frontier
Mon 3/28:20 pm
IAD
-
SJU
Nonstop3h 45m
Frontier
Deal found 1/26$130
This FlightHub deal was found by Cheapflights users on 1/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/115:25 pm
SJU
-
IAD
1 stop17h 00m
Frontier
Fri 2/208:20 pm
IAD
-
SJU
Nonstop3h 45m
Frontier
Deal found 1/24$132
This CheapOair deal was found by Cheapflights users on 1/25. 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.
Wed 2/185:25 pm
SJU
-
IAD
1 stop17h 00m
Frontier
Sat 2/218:20 pm
IAD
-
SJU
Nonstop3h 45m
Frontier
Deal found 1/25$138
This Super.com deal was found by Cheapflights users on 1/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/274:17 pm
SJU
-
IAD
Nonstop4h 08m
Frontier
Mon 3/28:20 pm
IAD
-
SJU
Nonstop3h 45m
Frontier
Deal found 1/27$140
This WAYA deal was found by Cheapflights users on 1/26. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2711:52 am
SJU
-
IAD
1 stop7h 15m
Multiple Airlines
Mon 3/28:20 pm
IAD
-
SJU
Nonstop3h 45m
Multiple Airlines
Deal found 1/26$145

Find flight deals from Luis Munoz Marin Intl to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$97
(Orbitz)

Popular in

April

Cheapest in

January

Average price

$133

Good round-trip deal

$202 or less

Good one-way deal

$328 or less
Provider with most accurate pricing for San Juan Luis Munoz Marin Intl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for San Juan Luis Munoz Marin Intl-Washington, D.C. Dulles Intl flights.
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From San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($20 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 San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Luis Munoz Marin Intl 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 January 27, 2026.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Luis Munoz Marin Intl

Fly to

Dulles Intl

Route

Depart

Return

Price

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 2/13

4:17 pm-7:25 pm

Nonstop4h 08m

Washington, D.C. Dulles Intl

Mon 2/16

8:20 pm-1:05 am

Nonstop3h 45m

$114

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 2/27

11:52 am-6:07 pm

1 stop7h 15m

Washington, D.C. Dulles Intl

Mon 3/2

8:20 pm-1:05 am

Nonstop3h 45m

$145

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 2/19

6:00 am-7:20 am

1 stop26h 20m

Washington, D.C. Dulles Intl

Mon 2/23

8:54 am-12:43 am

1 stop14h 49m

$182

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 2/12

4:36 pm-7:20 am

2 stops15h 44m

Washington, D.C. Dulles Intl

Mon 2/16

8:20 pm-1:05 am

Nonstop3h 45m

$199

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 2/26

10:57 am-7:20 am

1 stop21h 23m

Washington, D.C. Dulles Intl

Mon 3/2

2:58 pm-12:43 am

2 stops8h 45m

$227

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 2/13

8:05 am-11:10 am

Nonstop4h 05m

Washington, D.C. Dulles Intl

Tue 2/17

5:32 pm-10:22 pm

Nonstop3h 50m

$243

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Sat 2/7

5:50 pm-8:55 pm

Nonstop4h 05m

Washington, D.C. Dulles Intl

Mon 2/9

5:32 pm-10:22 pm

Nonstop3h 50m

$243

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 2/12

8:30 am-4:05 pm

1 stop8h 35m

Washington, D.C. Dulles Intl

Tue 2/17

8:27 am-1:17 pm

Nonstop3h 50m

$248

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 2/12

7:30 am-2:45 pm

1 stop8h 15m

Washington, D.C. Dulles Intl

Tue 2/17

3:42 pm-11:58 pm

1 stop7h 16m

$252

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Tue 2/10

8:35 am-4:00 pm

1 stop8h 25m

Washington, D.C. Dulles Intl

Sun 2/15

6:01 am-4:36 pm

1 stop9h 35m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 20 results
1
2

Compare providers for flights from Luis Munoz Marin Intl to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Luis Munoz Marin Intl to Dulles Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Juan Luis Munoz Marin Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Juan Luis Munoz Marin Intl Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Juan Luis Munoz Marin Intl Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Luis Munoz Marin Intl to Dulles Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from Luis Munoz Marin Intl to Dulles Intl. Price data was last updated on January 23, 2026.

The best time to book flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport is 3 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, June is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport (average of $59). Flying from San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl 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 January 27, 2026.

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

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

The best insider tips for San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Brandon Schultz

Brandon Schultz

Expert on SJU

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

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 January 27, 2026.
Read reviews from past customers who have flown United Airlines, American Airlines, and Frontier from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,205 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,205 reviews
United Airlines
7.4
Good
9,205 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
American Airlines
7.2
Good
11,197 reviews
United Airlines
7.4
Good
9,205 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Frontier
5.7
Fair
3,056 reviews
United Airlines
7.4
Good
9,205 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    For as low as $114, Frontier can have you in Washington, D.C. Dulles Intl Airport from San Juan Luis Munoz Marin Intl Airport in 4h 08m. San Juan Luis Munoz Marin Intl Airport and Washington, D.C. Dulles Intl Airport are separated by a distance of 1573 mi. Generally, flights for this route are nonstop.

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

    Frontier, at $67, was found to be the cheapest airline from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include United Airlines and American Airlines. These flights start at 78% lower than the current average price 3 months from now.

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

    The cheapest airlines for a one-way flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport are Frontier ($64), United Airlines ($129), and Delta ($146).

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

    Before booking your flight to Washington, D.C. Dulles Intl Airport from San Juan Luis Munoz Marin Intl Airport, check out the most reliable airlines to get you to your destination on time: Air Canada (93%), United Airlines (93%), Frontier( 58%).

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

    Looking for the cheapest flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport? While on average our users pay $593, our data indicates the cheapest price to be $76. The most popular route (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl), is priced around $114.

  • Can I find deals for flights from Luis Munoz Marin Intl to Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from Luis Munoz Marin Intl to Dulles Intl?

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

  • Can I find deals for business class flights from Luis Munoz Marin Intl to Dulles Intl?

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    Currently, June is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport (average of $59). Flying from San Juan Luis Munoz Marin Intl Airport 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
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

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Alternative routes for Luis Munoz Marin Intl to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Luis Munoz Marin Intl to Reagan-National flights
Luis Munoz Marin Intl to Baltimore flights

Top 3 airlines flying from Luis Munoz Marin Intl to Dulles Intl

Discover the top 3 airlines that operate flights from Luis Munoz Marin Intl 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$67Average$172FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$198Average$401FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$242Average$450FlexibilityNo cancel feeOn-time71%

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