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Dulles Intl

$89+ Cheap flights from San Juan 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
mar. 19 — mar. 261
mié. 3/19
mié. 3/26
1 adult, Economy
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The best prices from San Juan to Washington, D.C. Dulles Intl are usually found in September or May, booked 42 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from San Juan to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) 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 marzo 14, 2025.

Round-trip from

$178
(Frontier)

One-way from

$89
(Frontier)

Popular in

November

Cheapest in

September

Average price

$405
From San Juan to Washington, D.C. Dulles Intl
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One-way flight from San Juan to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from San Juan to Dulles Intl

Cheapest flights from San Juan to Dulles Intl
Explore the most affordable flight options available from San Juan to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 14, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/277:30 amSJU - IAD
Nonstop3h 55mFrontier
mar. 6/312:28 pmIAD - SJU
Nonstop3h 50mFrontier
Deal found 3/13$176
This United Airlines deal was found by Cheapflights users on 3/12. 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.
jue. 4/37:25 amSJU - IAD
Nonstop3h 59mUnited Airlines
lun. 4/78:40 amIAD - SJU
Nonstop3h 54mUnited Airlines
Deal found 3/12$246
This American Airlines deal was found by Cheapflights users on 3/11. 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.
vie. 4/256:05 amSJU - IAD
1 stop16h 37mAmerican Airlines
lun. 5/55:02 amIAD - SJU
1 stop15h 31mAmerican Airlines
Deal found 3/11$260
This Delta deal was found by Cheapflights users on 3/12. 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.
mié. 3/262:42 pmSJU - IAD
1 stop9h 49mDelta
mié. 4/212:15 pmIAD - SJU
1 stop11h 01mDelta
Deal found 3/12$275
This Mytrip deal was found by Cheapflights users on 3/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/35:39 pmSJU - IAD
3 stops17h 41mMultiple Airlines
dom. 4/612:55 pmIAD - SJU
3 stops27h 39mMultiple Airlines
Deal found 3/11$339

Find flights from San Juan to Dulles Intl within your budget

Customize your flight search to find flights from San Juan 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 marzo 14, 2025.

Fly from

San Juan

Fly to

Dulles Intl

Route

Depart

Return

Price

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

mar. 5/27

7:30 am-11:25 am

Nonstop3h 55m

Washington, D.C. Dulles Intl

mar. 6/3

12:28 pm-4:18 pm

Nonstop3h 50m

$178

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

vie. 4/11

7:25 am-11:24 am

Nonstop3h 59m

Washington, D.C. Dulles Intl

mar. 4/15

3:30 pm-11:54 pm

1 stop8h 24m

$251

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

mié. 4/30

6:35 am-1:01 pm

1 stop6h 26m

Washington, D.C. Dulles Intl

mié. 5/7

6:00 am-12:45 pm

1 stop6h 45m

$255

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

sáb. 4/26

6:05 am-10:42 pm

1 stop16h 37m

Washington, D.C. Dulles Intl

sáb. 5/3

5:00 am-8:28 pm

1 stop15h 28m

$265

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

jue. 3/27

5:39 pm-11:20 am

3 stops17h 41m

Washington, D.C. Dulles Intl

mar. 4/1

5:40 pm-12:42 am

3 stops31h 02m

$383

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

mar. 5/27

7:30 am-11:25 am

Nonstop3h 55m

$89

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

jue. 4/3

6:05 am-10:14 pm

1 stop16h 09m

$128

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

jue. 4/3

7:25 am-11:24 am

Nonstop3h 59m

$133

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

mié. 4/30

6:35 am-1:01 pm

1 stop6h 26m

$138

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

vie. 6/13

11:11 am-8:27 pm

1 stop9h 16m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

Showing 1-10 of 13 results
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Best time to book a flight from San Juan to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Juan 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.

Travel insights for flights from San Juan to Dulles Intl

Get recent, data-driven insights about flights from San Juan to Dulles Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from San Juan to Dulles Intl. Price data was last updated on March 7, 2025.

To ensure you get the cheapest price possible for a flight from San Juan to Washington, D.C. Dulles Intl Airport, you should look to book at least 42 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from San Juan to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Juan to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $388). 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 San Juan 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 marzo 14, 2025.

It’s optimal to fly from San Juan to Washington, D.C. Dulles Intl Airport at noon. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from San Juan to Dulles Intl. Price data was last updated on April 7, 2024.

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

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

Explore weekly flight availability from San Juan 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 marzo 14, 2025.

The most flights from PR1 to IAD are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

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.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

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).

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 marzo 14, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta and United Airlines from San Juan to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,734 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,734 reviews
Alaska Airlines
8.0
Very good
9,734 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
7,944 reviews
Alaska Airlines
8.0
Very good
9,734 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,623 reviews
Alaska Airlines
8.0
Very good
9,734 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,734 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Air Canada
7.0
Good
8,878 reviews
Alaska Airlines
8.0
Very good
9,734 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

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

    Currently priced at $178, Frontier will fly you from San Juan to Washington, D.C. Dulles Intl Airport and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $251 and $255, respectively. Frontier is 58% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from San Juan to Washington, D.C. Dulles 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 $89. American Airlines flights start at $128 while deals on United Airlines start at $133 one-way.

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

    Looking at all options, your cheapest flight can be booked for $59. While the most popular route (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl) can be booked for $206 on average our data indicates $2,525 when flying from San Juan to Washington, D.C. Dulles Intl Airport.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from San Juan to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Juan to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $388). 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 San Juan?

Book flights to San Juan if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Tysons
Springfield
Rockville
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Woodbridge
Laurel
Falls Church
Easton
Herndon
Sterling
Bowie
Gettysburg
National Harbor
Oxon Hill

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Top 3 airlines flying from San Juan to Dulles Intl

Discover the top 3 airlines that operate flights from San Juan 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 marzo 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$359FlexibilityNo cancel feeOn-time62%
DeltaCheapest$269Average$431FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$279Average$442FlexibilityNo cancel feeOn-time69%
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