Cheap flights from Washington, D.C. to San Juan from $97

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to San Juan departing on 1/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Washington, D.C. to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:14 pm - 11:59 pm
IAD
-
SJU
3h 45mnonstop
Frontier Logo
7:00 pm - 12:36 pm
SJU
-
IAD
42h 36m2 stops
$175Frontier
Mon, Jan 19 - Sat, Jan 24
Frontier Logo
9:03 pm - 2:23 pm
IAD
-
SJU
16h 20m1 stop
Frontier Logo
4:36 pm - 8:33 am
SJU
-
IAD
16h 57m1 stop
$176Frontier
Sat, Jan 17 - Sat, Jan 24
Frontier Logo
8:54 am - 9:54 am
IAD
-
SJU
24h 00m1 stop
Frontier Logo
5:25 pm - 9:25 am
SJU
-
IAD
17h 00m1 stop
$177Frontier
Mon, Feb 23 - Wed, Feb 25
JetBlue Logo
8:15 am - 1:08 pm
DCA
-
SJU
3h 53mnonstop
JetBlue Logo
6:30 pm - 9:32 pm
SJU
-
DCA
4h 02mnonstop
$181JetBlue
Wed, Jan 28 - Tue, Feb 3
JetBlue Logo
8:15 am - 1:08 pm
DCA
-
SJU
3h 53mnonstop
JetBlue Logo
6:30 pm - 9:32 pm
SJU
-
DCA
4h 02mnonstop
$193JetBlue
Wed, Jan 28 - Wed, Jan 28
American Airlines Logo
8:20 am - 8:50 pm
DCA
-
SJU
11h 30m1 stop
American Airlines Logo
6:00 am - 2:20 pm
SJU
-
DCA
9h 20m1 stop
$197American Airlines
Tue, Jan 27 - Tue, Feb 10
Spirit Airlines Logo
6:00 am - 10:47 am
BWI
-
SJU
3h 47mnonstop
Spirit Airlines Logo
9:11 pm - 12:20 am
SJU
-
BWI
4h 09mnonstop
$200Spirit Airlines
Sun, Feb 8 - Mon, Feb 16
Spirit Airlines Logo
6:00 am - 10:47 am
BWI
-
SJU
3h 47mnonstop
Spirit Airlines Logo
9:29 pm - 12:41 am
SJU
-
BWI
4h 12mnonstop
$201Spirit Airlines
Thu, Feb 5 - Tue, Feb 10
United Airlines Logo
12:00 pm - 9:00 pm
DCA
-
SJU
8h 00m1 stop
United Airlines Logo
7:45 am - 6:41 pm
SJU
-
DCA
11h 56m1 stop
$207United Airlines
Sun, Jan 18 - Thu, Jan 22
American Airlines Logo
6:59 am - 9:34 pm
DCA
-
SJU
13h 35m1 stop
American Airlines Logo
7:01 pm - 12:36 am
SJU
-
DCA
6h 35m1 stop
$211American Airlines
Mon, Feb 23 - Thu, Feb 26

American Airlines flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport

Our best American Airlines deals on Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flight tickets
American Airlines
Jan 31
DCA1:44 pmWashington, D.C. Reagan-National
9h 12m
1 stop
SJU11:56 pmSan Juan Luis Munoz Marin Intl
Feb 10
SJU6:00 amSan Juan Luis Munoz Marin Intl
11h 59m
1 stop
DCA4:59 pmWashington, D.C. Reagan-National
American Airlines
Jan 13
DCA5:55 amWashington, D.C. Reagan-National
9h 04m
1 stop
SJU3:59 pmSan Juan Luis Munoz Marin Intl
Jan 16
SJU3:49 pmSan Juan Luis Munoz Marin Intl
7h 15m
1 stop
DCA10:04 pmWashington, D.C. Reagan-National
American Airlines
Feb 20
IAD6:00 amWashington, D.C. Dulles Intl
16h 31m
1 stop
SJU11:31 pmSan Juan Luis Munoz Marin Intl
Feb 25
SJU8:40 amSan Juan Luis Munoz Marin Intl
12h 50m
1 stop
IAD8:30 pmWashington, D.C. Dulles Intl

Frontier flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport

Our best Frontier deals on Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Jan 19
IAD7:14 pmWashington, D.C. Dulles Intl
3h 45m
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Jan 24
SJU7:00 pmSan Juan Luis Munoz Marin Intl
42h 36m
2 stops
IAD12:36 pmWashington, D.C. Dulles Intl
Frontier
Jan 17
IAD9:03 pmWashington, D.C. Dulles Intl
16h 20m
1 stop
SJU2:23 pmSan Juan Luis Munoz Marin Intl
Jan 24
SJU4:36 pmSan Juan Luis Munoz Marin Intl
16h 57m
1 stop
IAD8:33 amWashington, D.C. Dulles Intl
Frontier
Feb 23
IAD8:20 pmWashington, D.C. Dulles Intl
3h 45m
SJU1:05 amSan Juan Luis Munoz Marin Intl
Feb 28
SJU8:53 pmSan Juan Luis Munoz Marin Intl
14h 37m
2 stops
IAD10:30 amWashington, D.C. Dulles Intl

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport 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, momondo users made 832,500 searches. Data last updated January 2, 2026.
Use the filters below to find and compare flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport 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 1/19

7:14 pm-11:59 pm

Nonstop3h 45m

San Juan Luis Munoz Marin Intl

Sat 1/24

7:00 pm-12:36 pm

2 stops42h 36m

$175

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 1/17

9:03 pm-2:23 pm

1 stop16h 20m

San Juan Luis Munoz Marin Intl

Sat 1/24

4:36 pm-8:33 am

1 stop16h 57m

$176

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 2/23

8:54 am-9:54 am

1 stop24h 00m

San Juan Luis Munoz Marin Intl

Wed 2/25

5:25 pm-9:25 am

1 stop17h 00m

$177

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Wed 1/28

8:15 am-1:08 pm

Nonstop3h 53m

San Juan Luis Munoz Marin Intl

Tue 2/3

6:30 pm-9:32 pm

Nonstop4h 02m

$181

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Wed 1/28

8:15 am-1:08 pm

Nonstop3h 53m

San Juan Luis Munoz Marin Intl

Wed 1/28

6:30 pm-9:32 pm

Nonstop4h 02m

$193

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Tue 1/27

8:20 am-8:50 pm

1 stop11h 30m

San Juan Luis Munoz Marin Intl

Tue 2/10

6:00 am-2:20 pm

1 stop9h 20m

$197

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sun 2/8

6:00 am-10:47 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Mon 2/16

9:11 pm-12:20 am

Nonstop4h 09m

$200

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Thu 2/5

6:00 am-10:47 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Tue 2/10

9:29 pm-12:41 am

Nonstop4h 12m

$201

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sun 1/18

12:00 pm-9:00 pm

1 stop8h 00m

San Juan Luis Munoz Marin Intl

Thu 1/22

7:45 am-6:41 pm

1 stop11h 56m

$207

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 2/23

6:59 am-9:34 pm

1 stop13h 35m

San Juan Luis Munoz Marin Intl

Thu 2/26

7:01 pm-12:36 am

1 stop6h 35m

$211

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San Juan from

How to get the cheapest flight ticket from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. and San Juan Luis Munoz Marin Intl Airport?

What is the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport?

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of July, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $295.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Washington, D.C. is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $365. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $457.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is at noon when flights can be purchased for as low as $238. Flights in the afternoon are often more expensive with an average ticket price of $428.

What is the cheapest Washington, D.C. to San Juan Luis Munoz Marin Intl flight route?

Fly from Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl for the best Washington, D.C. - San Juan Luis Munoz Marin Intl flight prices

How far in advance should I book a flight to San Juan Luis Munoz Marin Intl Airport?

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $402 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Washington, D.C. for as low as $326 on momondo.

What cabin class options are available on Washington, D.C. to San Juan Luis Munoz Marin Intl flights?

There are 4 cabin classes available to choose from on Washington, D.C. to San Juan Luis Munoz Marin Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to San Juan Luis Munoz Marin Intl Airport.

How have Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of January 2026, prices for Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flights are approximately 6% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to San Juan Luis Munoz Marin Intl Airport (WAS to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport

Best Price Found

$127

Fastest flight time

3h 39m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Washington, D.C. in the past 72 hours is $127. The best round-trip flight deal from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $290.
The fastest flight from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport takes 3h 39m
Direct flights go from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is JetBlue.
  • How far is Washington, D.C. to San Juan Luis Munoz Marin Intl by plane?

    San Juan Luis Munoz Marin Intl is 1560.2 mi away from Washington, D.C.. In terms of flight time, this usually takes a little over 3h 39m.

  • When did momondo last update prices for flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The travel and health documents you'll need for your trip to San Juan Luis Munoz Marin Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

  • What is the most popular airline from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $97Free CancellationRating
5.7
3,067 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $103Free CancellationRating
6.3
8,257 reviews
Search Spirit Airlines flights
DeltaPriceFrom $142Free CancellationRating
7.9
8,023 reviews
Search Delta flights
JetBluePriceFrom $161Free CancellationRating
7.2
2,901 reviews
Search JetBlue flights
United AirlinesPriceFrom $199Free CancellationRating
7.4
9,128 reviews
Search United Airlines flights
American AirlinesPriceFrom $219Free CancellationRating
7.2
11,075 reviews
Search American Airlines flights
SouthwestPriceFrom $220Free CancellationRating
8.0
4,255 reviews
Search Southwest flights
  • United Airlines Flights From Washington, D.C. to San Juan Luis Munoz Marin Intl Airport

    Across 13 United Airlines flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport this week, the average price was $435, with the best United Airlines deals starting from $199 round-trip. 9,128 users have rated United Airlines on momondo, with an average score of 7.4/10.

  • JetBlue Flights From Washington, D.C. to San Juan Luis Munoz Marin Intl Airport

    $161 is the best JetBlue flight deal from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport found on momondo over the last 72 hours. The average JetBlue ticket price found was closer to $402, however, with flight time and availability significantly affecting the price. JetBlue (7.2/10 from 2,901 user reviews) flies into San Juan Luis Munoz Marin Intl Airport from Washington, D.C. 5 times in an average week so prices can vary.

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Humacao
Caguas
Rio Grande
Bayamón

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to San Juan?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to San Juan for you.

Can I find flights from Washington, D.C. to San Juan with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Juan from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to San Juan?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to San Juan.

I’m not ready to book a flight from Washington, D.C. to San Juan right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to San Juan flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your San Juan Luis Munoz Marin Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 2/1
Sun 2/8

Find better results for your trip to San Juan