In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 (69%), United Airlines (69%), Frontier( 67%).

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

When booking a flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport, you may want to consider flying on United Airlines, Frontier or Delta as they are the most popular for this route.

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 eDreams to be most consistent on Cheapflights vs. eDreams 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. eDreams >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 eDreams the most. eDreams 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.

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.

$107+ Flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport

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

Airfare is below average for this route at the moment. San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights typically cost between $280 and $591 in December. The cheapest round-trip price found within the last 3 days was $138 on Frontier (Dec 20-Jan 4).

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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

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl 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 Luis Munoz Marin Intl to Dulles Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$138 (Frontier)
One-way from	$107 (Frontier)
Popular in	April
Cheapest in	July
Average price	$324
Good round-trip deal	$277 or less
Good one-way deal	$155 or less

Provider with most accurate pricing for San Juan Luis Munoz Marin Intl-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Juan Luis Munoz Marin Intl-Washington, D.C. Dulles Intl flights.

Search Deals

From San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl

Search Deals

One-way flight from San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($30 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

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.

Search Deals

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 October 28, 2025.

Sat 12/204:18 pmSJU - IAD

Nonstop4h 13mFrontier

Sun 1/48:26 pmIAD - SJU

Nonstop3h 54mFrontier

Deal found 10/28

$138

Thu 11/63:45 pmSJU - IAD

Nonstop3h 56mFrontier

Sun 11/97:26 pmIAD - SJU

Nonstop3h 52mFrontier

Deal found 10/27

$157

Mon 12/224:18 pmSJU - IAD

Nonstop4h 13mFrontier

Sat 1/38:26 pmIAD - SJU

Nonstop3h 54mFrontier

Deal found 10/28

$168

Thu 11/133:45 pmSJU - IAD

Nonstop3h 56mFrontier

Sun 11/164:04 pmIAD - SJU

1 stop8h 28mFrontier

Deal found 10/28

$169

Thu 12/46:30 amSJU - IAD

Nonstop4h 13mFrontier

Sun 12/710:38 amIAD - SJU

Nonstop3h 54mFrontier

Deal found 10/26

$171

Fri 11/214:08 pmSJU - IAD

Nonstop4h 03mFrontier

Sun 11/238:06 pmIAD - SJU

Nonstop3h 47mFrontier

Deal found 10/28

$172

Thu 10/303:45 pmSJU - IAD

Nonstop3h 56mFrontier

Sun 11/27:26 pmIAD - SJU

Nonstop3h 52mFrontier

Deal found 10/27

$177

Best flights from Luis Munoz Marin Intl to Dulles Intl
Discover carefully curated flight deals from Luis Munoz Marin Intl to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 28, 2025.

Thu 12/43:32 pmSJU - IAD

1 stop9h 40mDelta

Mon 12/87:01 amIAD - SJU

1 stop6h 13mDelta

Deal found 10/27

$185

Wed 1/149:37 pmSJU - IAD

2 stops15h 08mFrontier

Sat 1/176:33 pmIAD - SJU

1 stop19h 16mFrontier

Deal found 10/27

$277

Fri 12/55:00 pmSJU - IAD

3 stops48h 24mMultiple Airlines

Sun 12/1410:38 amIAD - SJU

Nonstop3h 54mMultiple Airlines

Deal found 10/27

$323

Mon 12/228:30 amSJU - IAD

Nonstop4h 05mUnited Airlines

Wed 12/315:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Deal found 10/27

$329

Thu 11/133:20 pmSJU - IAD

1 stop8h 43mDelta

Mon 11/173:35 pmIAD - SJU

1 stop6h 38mDelta

Deal found 10/26

$225

Fri 12/56:38 pmSJU - IAD

1 stop6h 34mDelta

Tue 12/912:19 pmIAD - SJU

1 stop10h 40mDelta

Deal found 10/26

$240

Sat 12/68:00 amSJU - IAD

1 stop25h 26mFrontier

Mon 12/86:58 pmIAD - SJU

2 stops22h 25mFrontier

Deal found 10/27

$329

Fri 11/75:50 pmSJU - IAD

Nonstop4h 05mUnited Airlines

Wed 11/125:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Deal found 10/27

$342

Tue 1/206:27 pmSJU - IAD

1 stop6h 57mDelta

Sat 1/2412:23 pmIAD - SJU

1 stop10h 36mDelta

Deal found 10/27

$297

Fri 3/68:10 amSJU - IAD

Nonstop4h 05mUnited Airlines

Tue 3/105:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Deal found 10/25

$343

Last-minute flights from Luis Munoz Marin Intl to Dulles Intl
Discover last-minute flight deals from Luis Munoz Marin Intl to Dulles Intl. Data last updated October 28, 2025 and is based on user searches.

Thu 10/303:45 pmSJU - IAD

Nonstop3h 56mFrontier

Sun 11/27:26 pmIAD - SJU

Nonstop3h 52mFrontier

Deal found 10/27

$177

Thu 11/63:45 pmSJU - IAD

Nonstop3h 56mFrontier

Sun 11/97:26 pmIAD - SJU

Nonstop3h 52mFrontier

Deal found 10/27

$157

Thu 11/133:45 pmSJU - IAD

Nonstop3h 56mFrontier

Sun 11/164:04 pmIAD - SJU

1 stop8h 28mFrontier

Deal found 10/28

$169

Fri 11/214:08 pmSJU - IAD

Nonstop4h 03mFrontier

Sun 11/238:06 pmIAD - SJU

Nonstop3h 47mFrontier

Deal found 10/28

$172

Sun 11/2310:22 pmSJU - IAD

1 stop10h 23mFrontier

Tue 11/258:06 pmIAD - SJU

Nonstop3h 47mFrontier

Deal found 10/27

$203

Tue 11/254:08 pmSJU - IAD

Nonstop4h 03mFrontier

Mon 12/18:06 pmIAD - SJU

Nonstop3h 47mFrontier

Deal found 10/25

$195

One-way flights from Luis Munoz Marin Intl to Dulles Intl
Search for one-way flight options from Luis Munoz Marin Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 28, 2025.

Mon 12/224:18 pmSJU - IAD

Nonstop4h 13mFrontier

Deal found 10/26

$107

Sat 12/68:18 amSJU - IAD

1 stop6h 02mAmerican Airlines

Deal found 10/27

$108

Sun 12/214:18 pmSJU - IAD

Nonstop4h 13mFrontier

Deal found 10/26

$109

Sat 12/138:18 amSJU - IAD

1 stop12h 13mAmerican Airlines

Deal found 10/27

$110

Sat 2/1411:29 amSJU - IAD

Nonstop4h 13mFrontier

Deal found 10/27

$111

Sat 1/104:02 pmSJU - IAD

Nonstop4h 13mFrontier

Deal found 10/27

$112

Wed 3/252:21 pmSJU - IAD

1 stop8h 41mDelta

Deal found 10/27

$113

Sat 11/229:30 pmSJU - IAD

1 stop13h 32mFrontier

Deal found 10/26

$115

Tue 12/233:54 amSJU - IAD

2 stops32h 44mFrontier

Deal found 10/27

$116

Tue 12/236:15 pmSJU - IAD

1 stop15h 27mAmerican Airlines

Deal found 10/26

$118

Tue 12/234:07 pmSJU - IAD

Nonstop4h 13mFrontier

Deal found 10/26

$121

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 12/4

3:32 pm-12:12 am

1 stop9h 40m

Washington, D.C. Dulles Intl

Mon 12/8

7:01 am-2:14 pm

1 stop6h 13m

$185

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 11/13

3:20 pm-11:03 pm

1 stop8h 43m

Washington, D.C. Dulles Intl

Mon 11/17

3:35 pm-11:13 pm

1 stop6h 38m

$225

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 12/5

6:38 pm-12:12 am

1 stop6h 34m

Washington, D.C. Dulles Intl

Tue 12/9

12:19 pm-11:59 pm

1 stop10h 40m

$240

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 1/14

9:37 pm-11:45 am

2 stops15h 08m

Washington, D.C. Dulles Intl

Sat 1/17

6:33 pm-2:49 pm

1 stop19h 16m

$277

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Tue 1/20

6:27 pm-12:24 am

1 stop6h 57m

Washington, D.C. Dulles Intl

Sat 1/24

12:23 pm-11:59 pm

1 stop10h 36m

$297

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 12/5

5:00 pm-4:24 pm

3 stops48h 24m

Washington, D.C. Dulles Intl

Sun 12/14

10:38 am-3:32 pm

Nonstop3h 54m

$323

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Mon 12/22

8:30 am-11:35 am

Nonstop4h 05m

Washington, D.C. Dulles Intl

Wed 12/31

5:32 pm-10:22 pm

Nonstop3h 50m

$329

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Sat 12/6

8:00 am-8:26 am

1 stop25h 26m

Washington, D.C. Dulles Intl

Mon 12/8

6:58 pm-6:23 pm

2 stops22h 25m

$329

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 11/7

5:50 pm-8:55 pm

Nonstop4h 05m

Washington, D.C. Dulles Intl

Wed 11/12

5:32 pm-10:22 pm

Nonstop3h 50m

$342

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 3/6

8:10 am-11:15 am

Nonstop4h 05m

Washington, D.C. Dulles Intl

Tue 3/10

5:32 pm-9:22 pm

Nonstop3h 50m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 22 results

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

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 October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
Cheapflightsfares	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams 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. eDreams >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 eDreams the most. eDreams 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?

The best time to book flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport is 29 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?

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 26% on the cost of your flight, compared to a flight in the afternoon.

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

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.

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.

Our travel experts

Ramsey Qubein

Expert on IAD

Brandon Schultz

Expert on SJU

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, United 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.

Delta

7.9

Good

7,994 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Delta

7.9

Good

7,994 reviews

Delta

7.9

Good

7,994 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

United Airlines

7.4

Good

9,001 reviews

Delta

7.9

Good

7,994 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Frontier

5.8

Fair

3,124 reviews

Delta

7.9

Good

7,994 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Related info for your journey

How long is the flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?
For as low as $185, Delta can have you in Washington, D.C. Dulles Intl Airport from San Juan Luis Munoz Marin Intl Airport in 9h 40m. San Juan Luis Munoz Marin Intl Airport and Washington, D.C. Dulles Intl Airport are separated by a distance of 1573 mi. Both multi-stop and nonstop flights can be found to your destination and back.
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 $85, 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 76% lower than the current average price 3 months from now.
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 (69%), United Airlines (69%), Frontier( 67%).
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 $382, our data indicates the cheapest price to be $77. The most popular route (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl), is priced around $185.
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

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Browse thousands of different options on Cheapflights for your next trip

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

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$85	Average$223	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$236	Average$443	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$269	Average$431	FlexibilityNo cancel fee	On-timeN/A

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$107+ 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 12/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Luis Munoz Marin Intl to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl 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 Luis Munoz Marin Intl to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Luis Munoz Marin Intl to Dulles Intl

Cheapest flights from Luis Munoz Marin Intl to Dulles IntlExplore 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 October 28, 2025.

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 October 28, 2025.

Cheapflights Fare Finder

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.

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 October.

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.

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?

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

What is the cheapest time of day to fly from SJU to IAD?

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

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

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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?

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

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

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

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

How can I 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?

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

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Alternative routes for Luis Munoz Marin Intl to Dulles Intl

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

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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 October 28, 2025.