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Luis Munoz Marin Intl

$74+ Cheap flights from Dulles Intl (IAD) to Luis Munoz Marin Intl (SJU)

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
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl are usually found in October or January, booked 24 days in advance, depart on a Tuesday or Sunday and return on a Friday

Cheap flight deals from Dulles Intl to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Luis Munoz Marin Intl (SJU). 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 April 25, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$148
(Frontier)

One-way from

$74
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$560

Good round-trip deal

$302 or less

Good one-way deal

$188 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-San Juan Luis Munoz Marin Intl flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-San Juan Luis Munoz Marin Intl flights.
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From Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl
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One-way flight from Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 5% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 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 San Juan Luis Munoz Marin Intl.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl.
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Find flight deals from Dulles Intl to Luis Munoz Marin Intl

Cheapest flights from Dulles Intl to Luis Munoz Marin Intl
Explore the most affordable flight options available from Dulles Intl to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.

This Frontier deal was found by Cheapflights users on 4/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/612:26 pmIAD - SJU
Nonstop3h 57mFrontier
Tue 7/88:00 amSJU - IAD
Nonstop3h 56mFrontier
Deal found 4/25$148
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/256:00 amIAD - SJU
1 stop10h 33mDelta
Fri 6/612:50 pmSJU - IAD
1 stop8h 44mDelta
Deal found 4/25$225
This American Airlines deal was found by Cheapflights users on 4/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/278:02 pmIAD - SJU
1 stop15h 08mAmerican Airlines
Wed 6/47:15 amSJU - IAD
1 stop16h 47mAmerican Airlines
Deal found 4/25$231
This Trip.com deal was found by Cheapflights users on 4/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/185:26 pmIAD - SJU
1 stop7h 28mMultiple Airlines
Thu 5/227:20 amSJU - IAD
Nonstop3h 55mMultiple Airlines
Deal found 4/24$249
This United Airlines deal was found by Cheapflights users on 4/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:20 amIAD - SJU
1 stop7h 25mUnited Airlines
Wed 9/173:56 pmSJU - IAD
1 stop8h 36mUnited Airlines
Deal found 4/24$275

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl to Luis Munoz Marin 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 April 25, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Dulles Intl

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 7/6

12:26 pm-4:23 pm

Nonstop3h 57m

San Juan Luis Munoz Marin Intl

Tue 7/8

8:00 am-11:56 am

Nonstop3h 56m

$148

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 5/25

6:00 am-4:33 pm

1 stop10h 33m

San Juan Luis Munoz Marin Intl

Fri 6/6

12:50 pm-9:34 pm

1 stop8h 44m

$225

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 5/27

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

$231

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 5/18

5:26 pm-12:54 am

1 stop7h 28m

San Juan Luis Munoz Marin Intl

Thu 5/22

7:20 am-11:15 am

Nonstop3h 55m

$249

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 6/2

8:40 am-12:34 pm

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Thu 6/5

3:56 pm-12:30 am

1 stop8h 34m

$281

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 5/27

4:55 pm-8:47 pm

Nonstop3h 52m

$74

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 5/25

6:00 am-4:33 pm

1 stop10h 33m

$113

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 5/31

5:02 am-8:33 pm

1 stop15h 31m

$115

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Tue 6/10

3:40 pm-11:57 pm

1 stop8h 17m

$123

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 6/16

3:13 pm-7:19 pm

2 stops28h 06m

$145

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 11 results
1
2

Compare providers for flights from Dulles Intl to Luis Munoz Marin 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 Dulles Intl to Luis Munoz Marin Intl in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 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 Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust AranGrant the most. AranGrant 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 Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin 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 Dulles Intl to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Luis Munoz Marin Intl. Price data was last updated on April 18, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport is 24 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 Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport 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 SJU?

Find hourly flight availability from Dulles Intl to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 25, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport in the evening. Doing so could potentially save you 55% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Luis Munoz Marin Intl. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Explore weekly flight availability from Dulles Intl to Luis Munoz Marin 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 April 25, 2025.

The most flights from IAD to SJU 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 Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport 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 San Juan Luis Munoz Marin Intl Airport when rainfall is around 2.2 in.

Temperature in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, 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 Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin 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 Luis Munoz Marin Intl. Reviews last updated April 25, 2025.
See what other customers who have flown with Delta, Avelo Airlines and United Airlines from Washington, D.C. to San Juan have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,920 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
8,685 reviews
Delta
8.0
Very good
7,920 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,920 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,920 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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 Luis Munoz Marin 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 Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport round-trip?

    Currently priced at $148, Frontier will fly you from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and American Airlines - these airlines can fly you to your destination from $225 and $231, respectively. You may be able to fly from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport for 69% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin 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 $74. Delta flights start at $113 while deals on American Airlines start at $115 one-way.

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

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport are Air Canada (84%), United Airlines (84%) and Brussels Airlines (82%).

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport is $90. On average you can expect to pay $1,117. The most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $186.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport 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

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
Dorado
Fajardo
Luquillo
Rio Grande
Humacao
Bayamón

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Alternative routes for Dulles Intl to Luis Munoz Marin Intl

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

Top 6 airlines flying from Dulles Intl to Luis Munoz Marin Intl

Discover the top 6 airlines that operate flights from Dulles Intl to Luis Munoz Marin 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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$96Average$276FlexibilityNo cancel feeOn-time65%
FrontierCheapest$98Average$222FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$203Average$385FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$224Average$621FlexibilityNo cancel feeOn-time71%
DeltaCheapest$239Average$390FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$301Average$510FlexibilityNo cancel feeOn-time69%

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