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Dulles Intl

$93+ Cheap flights from Luis Munoz Marin Intl (SJU) 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
ago. 2 — ago. 91
sáb. 8/2
sáb. 8/9
1 adult, Economy
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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 July or March, booked 42 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap 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 julio 28, 2025.

Round-trip from

$191
(Cheapflightsfares)

One-way from

$93
(United Airlines)

Popular in

April

Cheapest in

July

Average price

$258

Good round-trip deal

$221 or less

Good one-way deal

$133 or less
From San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl
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One-way flight from San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl.
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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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Find 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 julio 28, 2025.

This Frontier deal was found by Cheapflights users on 7/27. 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.
jue. 11/66:25 amSJU - IAD
Nonstop3h 56mFrontier
dom. 11/910:09 amIAD - SJU
Nonstop3h 52mFrontier
Deal found 7/27$156
This American Airlines deal was found by Cheapflights users on 7/28. 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.
jue. 8/78:00 amSJU - IAD
1 stop15h 59mAmerican Airlines
dom. 8/106:34 amIAD - SJU
1 stop16h 22mAmerican Airlines
Deal found 7/28$165
This United Airlines deal was found by Cheapflights users on 7/27. 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.
mié. 9/171:05 amSJU - IAD
1 stop6h 14mUnited Airlines
dom. 9/288:39 amIAD - SJU
Nonstop3h 55mUnited Airlines
Deal found 7/27$211
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/192:15 pmSJU - IAD
1 stop8h 51mDelta
lun. 9/226:00 amIAD - SJU
1 stop10h 31mDelta
Deal found 7/28$215

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 julio 28, 2025.
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

jue. 11/6

6:25 am-9:21 am

Nonstop3h 56m

Washington, D.C. Dulles Intl

dom. 11/9

10:09 am-3:01 pm

Nonstop3h 52m

$156

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

jue. 8/7

8:00 am-11:59 pm

1 stop15h 59m

Washington, D.C. Dulles Intl

dom. 8/10

6:34 am-10:56 pm

1 stop16h 22m

$165

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

mié. 9/17

1:05 am-7:19 am

1 stop6h 14m

Washington, D.C. Dulles Intl

dom. 9/28

8:39 am-12:34 pm

Nonstop3h 55m

$211

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

vie. 9/19

2:15 pm-11:06 pm

1 stop8h 51m

Washington, D.C. Dulles Intl

lun. 9/22

6:00 am-4:31 pm

1 stop10h 31m

$215

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

vie. 10/24

4:55 pm-8:52 pm

Nonstop3h 57m

$93

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

dom. 11/16

6:25 am-9:21 am

Nonstop3h 56m

$102

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

sáb. 10/11

2:05 pm-11:01 pm

1 stop8h 56m

$108

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

jue. 8/7

8:00 am-4:30 pm

1 stop8h 30m

$113

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

vie. 8/8

2:40 am-11:26 pm

2 stops20h 46m

$145

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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
Airports
SJU

At SJU, security wait times can vary greatly. Arrive two hours early for domestic flights to avoid unexpected delays.

Read more about SJUby Brandon Schultz
IAD

From IAD, the Washington Metro Silver Line offers a cheap, 40-minute ride to the city, with the station five minutes from the terminal.

Read more about IADby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

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

Brandon Schultz

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

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 July 25, 2025.

The best time to book flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport is 42 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, August 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 $309). Flying from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 julio 28, 2025.

It’s optimal to fly from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport at noon. By choosing this option you can save up to 35% on the cost of your flight, compared to a flight in the afternoon.

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

Explore weekly flight availability from Luis Munoz Marin Intl 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 julio 28, 2025.

The most flights from SJU to IAD are scheduled on a Sunday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

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 julio 28, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines 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.
Delta
8.0
Very good
7,975 reviews

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,975 reviews
Delta
8.0
Very good
7,975 reviews

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,892 reviews
Delta
8.0
Very good
7,975 reviews

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,975 reviews

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Frontier
5.9
Fair
3,238 reviews
Delta
8.0
Very good
7,975 reviews

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

  • 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 $191, 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 Delta. These flights start at 51% 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 United Airlines ($93), Frontier ($94), and Delta ($108).

  • 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 (85%), United Airlines (85%), Frontier( 76%).

  • 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 $400, our data indicates the cheapest price to be $104. The most popular route (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl), is priced around $159.

  • 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, August 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 $309). Flying from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Easton
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
Springfield
National Harbor
Dundalk

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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 julio 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$237FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$250Average$458FlexibilityNo cancel feeOn-time69%
DeltaCheapest$269Average$431FlexibilityNo cancel feeOn-timeN/A

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