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

Southwest, at $170, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to San Juan.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Users have found that Southwest is 59% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to San Juan one-way?

To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $88. Southwest flights start at $98 while deals on Delta start at $108 one-way.

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. Reagan-National Airport to San Juan?

While on average a flight from Washington, D.C. Reagan-National Airport to San Juan is generally $348, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Washington, D.C. Reagan-National - San Juan Luis Munoz Marin Intl), you can expect to pay $165 for that flight.

What are the most popular airlines that fly from Washington, D.C. Reagan-National Airport to San Juan?

American Airlines, JetBlue and Delta are the most popular airlines when flying from Washington, D.C. Reagan-National Airport to San Juan.

What is the cheapest day to fly round-trip from Washington, D.C. Reagan-National Airport to San Juan?

Leaving on a Sunday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 16% on the overall cost on flights from Washington, D.C. Reagan-National Airport to San Juan.

What is the cheapest month to fly from Washington, D.C. Reagan-National Airport to San Juan?

Our data shows that March tends to be the cheapest month to fly to San Juan from Washington, D.C. Reagan-National Airport. Users have commonly found prices around $349 for the month, but tickets can be as low as $122. Due to multiple factors, prepare for potentially higher prices in December.

Can I find deals for flights from Reagan-National to San Juan that include hotel bookings?

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

How can I find direct flights from Reagan-National to San Juan?

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

Can I find deals for business class flights from Reagan-National to San Juan?

Yes. Cheapflights offers flight deals from Reagan-National 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.

$88+ Flights from Washington, D.C. Reagan-National Airport to San Juan

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1. Tell us where you want to go

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3. Compare prices and book

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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to San Juan are usually found in October or September, booked 48 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from Reagan-National to San Juan

Round-trip from	$170 (Southwest)
One-way from	$88 (American Airlines)
Popular in	December
Cheapest in	October
Average price	$411

From Washington, D.C. Reagan-National to San Juan

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One-way flight from Washington, D.C. Reagan-National to San Juan

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($77 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Reagan-National to San Juan

Cheapest flights from Reagan-National to San Juan
Explore the most affordable flight options available from Reagan-National to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Tue 7/156:55 amDCA - SJU

1 stop6h 10mSouthwest

Thu 7/247:00 amSJU - DCA

1 stop12h 30mSouthwest

Deal found 7/2

$170

Mon 7/214:50 pmDCA - SJU

1 stop6h 00mAmerican Airlines

Wed 7/306:03 amSJU - DCA

1 stop6h 34mAmerican Airlines

Deal found 7/2

$171

Tue 7/811:05 amDCA - SJU

1 stop9h 33mUnited Airlines

Thu 7/101:10 amSJU - DCA

1 stop9h 17mUnited Airlines

Deal found 7/1

$182

Thu 7/178:00 amDCA - SJU

Nonstop3h 59mJetBlue

Sun 7/206:05 pmSJU - DCA

Nonstop3h 54mJetBlue

Deal found 7/1

$186

Wed 11/196:05 amDCA - SJU

1 stop5h 53mDelta

Wed 12/31:50 pmSJU - DCA

1 stop7h 24mDelta

Deal found 7/2

$250

Best flights from Reagan-National to San Juan
Discover carefully curated flight deals from Reagan-National to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Tue 7/156:55 amDCA - SJU

1 stop6h 10mSouthwest

Thu 7/247:00 amSJU - DCA

1 stop12h 30mSouthwest

Deal found 7/2

$170

Mon 7/214:50 pmDCA - SJU

1 stop6h 00mAmerican Airlines

Wed 7/306:03 amSJU - DCA

1 stop6h 34mAmerican Airlines

Deal found 7/2

$171

Tue 7/811:05 amDCA - SJU

1 stop9h 33mUnited Airlines

Thu 7/101:10 amSJU - DCA

1 stop9h 17mUnited Airlines

Deal found 7/1

$182

Thu 7/178:00 amDCA - SJU

Nonstop3h 59mJetBlue

Sun 7/206:05 pmSJU - DCA

Nonstop3h 54mJetBlue

Deal found 7/1

$186

Mon 8/185:00 pmDCA - SJU

1 stop6h 51mDelta

Fri 9/2612:58 pmSJU - DCA

1 stop10h 44mDelta

Deal found 7/2

$215

Last-minute flights from Reagan-National to San Juan
Discover last-minute flight deals from Reagan-National to San Juan. Data last updated July 3, 2025 and is based on user searches.

Tue 7/811:05 amDCA - SJU

1 stop9h 33mUnited Airlines

Thu 7/101:10 amSJU - DCA

1 stop9h 17mUnited Airlines

Deal found 7/1

$182

Tue 7/810:10 amDCA - SJU

1 stop6h 08mJetBlue

Fri 7/116:05 pmSJU - DCA

Nonstop3h 54mJetBlue

Deal found 7/1

$318

Wed 7/99:08 amDCA - SJU

1 stop12h 47mAmerican Airlines

Mon 7/147:00 pmSJU - DCA

1 stop14h 13mAmerican Airlines

Deal found 7/2

$175

Sat 7/121:35 pmDCA - SJU

1 stop11h 20mSouthwest

Sat 7/196:00 amSJU - DCA

1 stop7h 20mSouthwest

Deal found 7/1

$195

Tue 7/156:55 amDCA - SJU

1 stop6h 10mSouthwest

Thu 7/247:00 amSJU - DCA

1 stop12h 30mSouthwest

Deal found 7/2

$170

Thu 7/178:00 amDCA - SJU

Nonstop3h 59mJetBlue

Sun 7/206:05 pmSJU - DCA

Nonstop3h 54mJetBlue

Deal found 7/1

$186

Mon 7/214:50 pmDCA - SJU

1 stop6h 00mAmerican Airlines

Wed 7/306:03 amSJU - DCA

1 stop6h 34mAmerican Airlines

Deal found 7/2

$171

Mon 8/116:05 amDCA - SJU

1 stop10h 22mDelta

Wed 8/207:00 amSJU - DCA

1 stop11h 14mDelta

Deal found 7/3

$260

One-way flights from Reagan-National to San Juan
Search for one-way flight options from Reagan-National to San Juan. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Sat 7/193:59 pmDCA - SJU

1 stop6h 51mAmerican Airlines

Deal found 7/2

$88

Sat 7/126:45 pmDCA - SJU

1 stop6h 10mSouthwest

Deal found 7/1

$98

Sat 8/306:00 amDCA - SJU

1 stop10h 36mDelta

Deal found 7/3

$108

Mon 7/73:30 pmDCA - SJU

1 stop8h 24mUnited Airlines

Deal found 7/1

$113

Tue 8/128:00 amDCA - SJU

Nonstop3h 58mJetBlue

Deal found 7/2

$124

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Tue 7/15

6:55 am-1:05 pm

1 stop6h 10m

San Juan Luis Munoz Marin Intl

Thu 7/24

7:00 am-7:30 pm

1 stop12h 30m

$170

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 7/21

4:50 pm-10:50 pm

1 stop6h 00m

San Juan Luis Munoz Marin Intl

Wed 7/30

6:03 am-12:37 pm

1 stop6h 34m

$171

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Tue 7/8

11:05 am-8:38 pm

1 stop9h 33m

San Juan Luis Munoz Marin Intl

Thu 7/10

1:10 am-10:27 am

1 stop9h 17m

$182

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Thu 7/17

8:00 am-11:59 am

Nonstop3h 59m

San Juan Luis Munoz Marin Intl

Sun 7/20

6:05 pm-9:59 pm

Nonstop3h 54m

$186

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 8/11

6:05 am-4:27 pm

1 stop10h 22m

San Juan Luis Munoz Marin Intl

Wed 8/20

7:00 am-6:14 pm

1 stop11h 14m

$260

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 7/19

3:59 pm-10:50 pm

1 stop6h 51m

$88

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 7/12

6:45 pm-12:55 am

1 stop6h 10m

$98

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 8/30

6:00 am-4:36 pm

1 stop10h 36m

$108

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 7/7

3:30 pm-11:54 pm

1 stop8h 24m

$113

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Tue 8/12

8:00 am-11:58 am

Nonstop3h 58m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Reagan-National to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Reagan-National 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. Reagan-National Airport to San Juan

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to San Juan?

The best time to book flights from Washington, D.C. Reagan-National Airport to San Juan is 48 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. Reagan-National Airport to San Juan?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Juan (average of $254). Flying from Washington, D.C. Reagan-National 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 DCA to SJU?

When flying from Washington, D.C. Reagan-National Airport to San Juan, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 31% versus a flight in the morning.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to San Juan?

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

Reviews of airlines servicing San Juan

See what other customers who have flown with Southwest, Delta, and United Airlines from Washington, D.C. Reagan-National Airport to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,266 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,982 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

United Airlines

7.4

Good

8,861 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

JetBlue

7.3

Good

2,916 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to San Juan round-trip?
Southwest, at $170, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to San Juan.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Users have found that Southwest is 59% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to San Juan one-way?
To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $88. Southwest flights start at $98 while deals on Delta start at $108 one-way.
What are the cheapest flights from Washington, D.C. Reagan-National Airport to San Juan?
While on average a flight from Washington, D.C. Reagan-National Airport to San Juan is generally $348, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Washington, D.C. Reagan-National - San Juan Luis Munoz Marin Intl), you can expect to pay $165 for that flight.
Can I find deals for flights from Reagan-National to San Juan that include hotel bookings?
Yes. In addition to deals on Reagan-National to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Reagan-National to San Juan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to San Juan.
Can I find deals for business class flights from Reagan-National to San Juan?
Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to San Juan?
Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Juan (average of $254). Flying from Washington, D.C. Reagan-National 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

Top 7 airlines flying from Reagan-National to San Juan

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$83	Average$218	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$115	Average$281	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$220	Average$444	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$237	Average$390	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$258	Average$452	FlexibilityNo cancel fee	On-time71%
JetBlue	Cheapest$261	Average$414	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$322	Average$464	FlexibilityNo cancel fee	On-time63%

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$88+ Cheap flights from Reagan-National (DCA) 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National 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. Reagan-National to San Juan are usually found in October or September, booked 48 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from Reagan-National to San Juan

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Reagan-National to San Juan

Cheapest flights from Reagan-National to San JuanExplore the most affordable flight options available from Reagan-National to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Explore the most affordable flight options available from Reagan-National to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Reagan-National to San Juan

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to San Juan

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to San Juan. Price data was last updated on June 27, 2025.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to San Juan?

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

Find hourly flight availability from Reagan-National 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 July 3, 2025.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to San Juan?

Use this chart to determine the cheapest time to fly round-trip from Reagan-National to San Juan. Price data was last updated on December 16, 2024.

Reviews of airlines servicing San Juan

See what other customers who have flown with Southwest, Delta, and United Airlines from Washington, D.C. Reagan-National Airport to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to San Juan. 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. Reagan-National Airport to San Juan round-trip?

What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to San Juan one-way?

What are the cheapest flights from Washington, D.C. Reagan-National Airport to San Juan?

Can I find deals for flights from Reagan-National to San Juan that include hotel bookings?

How can I find direct flights from Reagan-National to San Juan?

Can I find deals for business class flights from Reagan-National to San Juan?

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to San Juan?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to San Juan

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Reagan-National to San Juan

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Cheapest flights from Reagan-National to San Juan
Explore the most affordable flight options available from Reagan-National to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.