How long is the flight from Washington, D.C. Dulles Intl Airport to San Juan?

Departing from Washington, D.C. Dulles Intl Airport to San Juan will take you 3h 50m. Washington, D.C. Dulles Intl Airport and San Juan are separated by a distance of 1573 mi. Most flights are nonstop.

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

Our cheapest airline available from Washington, D.C. Dulles Intl Airport to San Juan is Frontier. Our recent data shows that you can find tickets from as low as $115 on this airline. Additional options worth looking into are Spirit Airlines and American Airlines, starting at $135 and $145 round-trip. Frontier is priced at 73% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in San Juan 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 when rainfall is around 2.2 in.

If weather is an important factor for your trip to San Juan, 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).

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

On average you can expect to pay $625 for a flight from Washington, D.C. Dulles Intl Airport to San Juan. The cheapest flight overall is $77 while the most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl) is currently priced at $148.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to San Juan on time: Air Canada (75%), United Airlines (75%), Brussels Airlines (70%).

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

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

Can I find deals for flights from Dulles Intl to San Juan that include hotel bookings?

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

How can I find direct flights from Dulles Intl to San Juan?

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

Can I find deals for business class flights from Dulles Intl to San Juan?

Yes. Cheapflights offers flight deals from Dulles Intl to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$117+ Flights from Washington, D.C. Dulles Intl Airport to San Juan

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

Airfare is below average for this route at the moment. Washington, D.C. Dulles Intl Airport to San Juan flights typically cost between $344 and $607 in November. The cheapest round-trip price found within the last 3 days was $168 on Frontier (Nov 16-Nov 21).

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Find cheap flights from Dulles Intl to San Juan 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 Washington, D.C. Dulles Intl to San Juan are usually found in June or August, booked 90 days in advance, depart on a Tuesday or Sunday and return on a Thursday

Cheap flight deals from Dulles Intl to San Juan

Round-trip from	$168
One-way from	$117 (Frontier)
Popular in	April
Cheapest in	June
Average price	$471

From Washington, D.C. Dulles Intl to San Juan

Search Deals

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

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($43 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Dulles Intl to San Juan

Cheapest flights from Dulles Intl to San Juan
Explore the most affordable flight options available from Dulles Intl to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Sun 11/167:26 pmIAD - SJU

Nonstop3h 52mFrontier

Fri 11/214:08 pmSJU - IAD

Nonstop4h 03mFrontier

Deal found 9/15

$168

Thu 10/239:07 pmIAD - SJU

Nonstop3h 52mFrontier

Thu 10/307:30 amSJU - IAD

1 stop13h 27mFrontier

Deal found 9/17

$176

Sun 11/27:26 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 11/93:45 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$181

Sun 10/199:07 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 11/23:45 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$183

Thu 10/308:26 pmIAD - SJU

Nonstop3h 52mFrontier

Thu 11/63:45 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$184

Sun 10/269:07 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 11/23:45 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/16

$187

Thu 10/239:07 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 10/264:26 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$189

Thu 10/169:07 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 10/194:26 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/16

$191

Thu 12/1110:08 amIAD - SJU

Nonstop3h 54mFrontier

Wed 12/173:59 pmSJU - IAD

1 stop7h 20mFrontier

Deal found 9/16

$192

Sun 10/56:10 amIAD - SJU

1 stop8h 01mFrontier

Thu 10/94:26 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$197

Sun 10/269:07 pmIAD - SJU

Nonstop3h 52mFrontier

Wed 10/295:51 pmSJU - IAD

2 stops22h 43mFrontier

Deal found 9/16

$201

Best flights from Dulles Intl to San Juan
Discover carefully curated flight deals from Dulles Intl to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2025.

Mon 11/105:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Thu 11/135:50 pmSJU - IAD

Nonstop4h 05mUnited Airlines

Deal found 9/15

$266

Wed 10/295:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Fri 10/314:50 pmSJU - IAD

Nonstop4h 05mUnited Airlines

Deal found 9/16

$296

Sat 11/15:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Fri 11/78:10 amSJU - IAD

1 stop10h 20mUnited Airlines

Deal found 9/16

$301

Mon 12/85:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Mon 12/155:50 pmSJU - IAD

Nonstop4h 05mUnited Airlines

Deal found 9/17

$302

Wed 10/110:45 amIAD - SJU

1 stop9h 53mUnited Airlines

Tue 10/73:56 pmSJU - IAD

1 stop8h 25mUnited Airlines

Deal found 9/14

$312

Mon 12/155:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Mon 12/222:15 pmSJU - IAD

1 stop8h 00mUnited Airlines

Deal found 9/17

$337

Sat 12/135:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Sat 12/208:30 amSJU - IAD

Nonstop4h 05mUnited Airlines

Deal found 9/14

$339

Wed 12/106:00 amIAD - SJU

1 stop7h 40mUnited Airlines

Tue 12/168:10 amSJU - IAD

1 stop10h 20mUnited Airlines

Deal found 9/16

$341

Sat 10/256:01 amIAD - SJU

1 stop9h 41mUnited Airlines

Tue 10/287:10 amSJU - IAD

1 stop10h 20mUnited Airlines

Deal found 9/15

$341

Sat 10/45:12 pmIAD - SJU

1 stop6h 45mUnited Airlines

Sat 10/114:55 pmSJU - IAD

Nonstop3h 57mUnited Airlines

Deal found 9/16

$344

Sat 10/188:39 amIAD - SJU

Nonstop3h 55mUnited Airlines

Tue 10/214:55 pmSJU - IAD

Nonstop3h 57mUnited Airlines

Deal found 9/16

$345

Last-minute flights from Dulles Intl to San Juan
Discover last-minute flight deals from Dulles Intl to San Juan. Data last updated September 17, 2025 and is based on user searches.

Sun 10/56:10 amIAD - SJU

1 stop8h 01mFrontier

Thu 10/94:26 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$197

Sun 10/129:07 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 10/194:26 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$205

Thu 10/169:07 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 10/194:26 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/16

$191

Sun 10/199:07 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 11/23:45 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$183

Thu 10/239:07 pmIAD - SJU

Nonstop3h 52mFrontier

Thu 10/307:30 amSJU - IAD

1 stop13h 27mFrontier

Deal found 9/17

$176

Thu 10/239:07 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 10/264:26 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$189

Sun 10/269:07 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 11/23:45 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/16

$187

Sun 10/269:07 pmIAD - SJU

Nonstop3h 52mFrontier

Wed 10/295:51 pmSJU - IAD

2 stops22h 43mFrontier

Deal found 9/16

$201

Thu 10/308:26 pmIAD - SJU

Nonstop3h 52mFrontier

Thu 11/63:45 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$184

Thu 10/308:26 pmIAD - SJU

Nonstop3h 52mFrontier

Sun 11/23:45 pmSJU - IAD

Nonstop3h 56mFrontier

Deal found 9/15

$206

One-way flights from Dulles Intl to San Juan
Search for one-way flight options from Dulles Intl to San Juan. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

Fri 9/263:15 pmIAD - SJU

2 stops18h 41mFrontier

Deal found 9/15

$117

Mon 12/85:32 pmIAD - SJU

Nonstop3h 50mUnited Airlines

Deal found 9/15

$118

Mon 9/291:55 pmIAD - SJU

2 stops20h 01mFrontier

Deal found 9/15

$119

Tue 12/25:14 pmIAD - SJU

1 stop7h 39mAvelo Airlines

Deal found 9/15

$120

Mon 11/107:01 amIAD - SJU

1 stop6h 16mDelta

Deal found 9/17

$123

Sun 10/196:15 amIAD - SJU

1 stop7h 54mFrontier

Deal found 9/15

$126

Thu 10/308:26 pmIAD - SJU

Nonstop3h 52mFrontier

Deal found 9/15

$128

Thu 11/67:26 pmIAD - SJU

Nonstop3h 52mFrontier

Deal found 9/15

$129

Sat 10/187:15 amIAD - SJU

2 stops28h 46mFrontier

Deal found 9/17

$133

Fri 11/145:34 pmIAD - SJU

2 stops21h 49mMultiple Airlines

Deal found 9/15

$135

Fri 10/37:14 pmIAD - SJU

1 stop7h 20mFrontier

Deal found 9/17

$136

Thu 10/27:14 pmIAD - SJU

1 stop7h 20mFrontier

Deal found 9/17

$138

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 11/10

5:32 pm-10:22 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Thu 11/13

5:50 pm-8:55 pm

Nonstop4h 05m

$266

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Wed 10/29

5:32 pm-9:22 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Fri 10/31

4:50 pm-8:55 pm

Nonstop4h 05m

$296

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 11/1

5:32 pm-9:22 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Fri 11/7

8:10 am-5:30 pm

1 stop10h 20m

$301

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 12/8

5:32 pm-10:22 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Mon 12/15

5:50 pm-8:55 pm

Nonstop4h 05m

$302

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Wed 10/1

10:45 am-8:38 pm

1 stop9h 53m

San Juan Luis Munoz Marin Intl

Tue 10/7

3:56 pm-12:21 am

1 stop8h 25m

$312

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 12/15

5:32 pm-10:22 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Mon 12/22

2:15 pm-9:15 pm

1 stop8h 00m

$337

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 12/13

5:32 pm-10:22 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Sat 12/20

8:30 am-11:35 am

Nonstop4h 05m

$339

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Wed 12/10

6:00 am-2:40 pm

1 stop7h 40m

San Juan Luis Munoz Marin Intl

Tue 12/16

8:10 am-5:30 pm

1 stop10h 20m

$341

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 10/25

6:01 am-3:42 pm

1 stop9h 41m

San Juan Luis Munoz Marin Intl

Tue 10/28

7:10 am-5:30 pm

1 stop10h 20m

$341

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 10/4

5:12 pm-11:57 pm

1 stop6h 45m

San Juan Luis Munoz Marin Intl

Sat 10/11

4:55 pm-8:52 pm

Nonstop3h 57m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results

Best time to book a flight from Dulles Intl to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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

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

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to San Juan may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Juan (average of $254). Flying from Washington, D.C. Dulles Intl Airport to San Juan in June is currently the most expensive (average of $339). 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?

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to San Juan at noon. Doing so could potentially save you 59% on the flight price compared to flying in the evening, which is usually more expensive.

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

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

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

Reviews of airlines servicing San Juan

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Washington, D.C. Dulles Intl Airport to San Juan. 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

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,961 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,926 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Spirit Airlines

6.3

Okay

8,023 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Frontier

5.8

Fair

3,173 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

How long is the flight from Washington, D.C. Dulles Intl Airport to San Juan?
Departing from Washington, D.C. Dulles Intl Airport to San Juan will take you 3h 50m. Washington, D.C. Dulles Intl Airport and San Juan are separated by a distance of 1573 mi. Most flights are nonstop.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to San Juan round-trip?
Our cheapest airline available from Washington, D.C. Dulles Intl Airport to San Juan is Frontier. Our recent data shows that you can find tickets from as low as $115 on this airline. Additional options worth looking into are Spirit Airlines and American Airlines, starting at $135 and $145 round-trip. Frontier is priced at 73% lower than the current average price of a flight leaving 3 months from now.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to San Juan?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to San Juan on time: Air Canada (75%), United Airlines (75%), Brussels Airlines (70%).
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to San Juan?
On average you can expect to pay $625 for a flight from Washington, D.C. Dulles Intl Airport to San Juan. The cheapest flight overall is $77 while the most popular route, (Washington, D.C. Dulles Intl - San Juan Luis Munoz Marin Intl) is currently priced at $148.
Can I find deals for flights from Dulles Intl to San Juan that include hotel bookings?
Yes. In addition to deals on Dulles Intl to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to San Juan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to San Juan.
Can I find deals for business class flights from Dulles Intl to San Juan?
Yes. Cheapflights offers flight deals from Dulles Intl to San Juan 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?
Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Juan (average of $254). Flying from Washington, D.C. Dulles Intl Airport to San Juan in June is currently the most expensive (average of $339). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to San Juan

Dulles Intl to Luis Munoz Marin Intl flights

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Reagan-National to Luis Munoz Marin Intl flights

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Dulles Intl to Culebra flights

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Dulles Intl to Vieques flights

Baltimore to Aguadilla flights

Dulles Intl to Aguadilla flights

Reagan-National to Vieques flights

Baltimore to Vieques flights

Reagan-National to Mayagüez flights

Baltimore to Mayagüez flights

Baltimore to Culebra flights

Complete your trip

San Juan car rentals

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Hato Rey Sur car rentals

Hato Rey Norte car rentals

Top 6 airlines flying from Dulles Intl to San Juan

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$115	Average$251	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$135	Average$288	FlexibilityNo cancel fee	On-time65%
American Airlines	Cheapest$145	Average$484	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$164	Average$368	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$168	Average$390	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$277	Average$514	FlexibilityNo cancel fee	On-time69%

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$117+ Cheap flights from Dulles Intl (IAD) to San Juan

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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to San Juan 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 Washington, D.C. Dulles Intl to San Juan are usually found in June or August, booked 90 days in advance, depart on a Tuesday or Sunday and return on a Thursday

Cheap flight deals from Dulles Intl to San Juan

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Dulles Intl to San Juan

Cheapest flights from Dulles Intl to San JuanExplore the most affordable flight options available from Dulles Intl to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Explore the most affordable flight options available from Dulles Intl to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Juan that are best for you.

Best time to book a flight from Dulles Intl to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Dulles Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to San Juan

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to San Juan. Price data was last updated on September 12, 2025.

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

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

Find hourly flight availability from Dulles Intl to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to San Juan. Price data was last updated on September 29, 2024.

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

Reviews of airlines servicing San Juan

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to San Juan. 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 Washington, D.C. Dulles Intl Airport to San Juan?

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

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

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

Can I find deals for flights from Dulles Intl to San Juan that include hotel bookings?

How can I find direct flights from Dulles Intl to San Juan?

Can I find deals for business class flights from Dulles Intl to San Juan?

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

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Alternative routes for Dulles Intl to San Juan

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Top 6 airlines flying from Dulles Intl to San Juan

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Cheapest flights from Dulles Intl to San Juan
Explore the most affordable flight options available from Dulles Intl to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.