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Cheap flights from Washington, D.C. to San Juan from $85

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 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to San Juan

Cheap round-trip flights

Frontier Logo
7:26 pm - 12:18 amIAD-SJU
3h 52mnonstop
Frontier Logo
4:08 pm - 7:11 pmSJU-IAD
4h 03mnonstop
$168Frontier
Find Deal
Sun, Nov 16 - Fri, Nov 21
Frontier Logo
7:26 pm - 12:18 amIAD-SJU
3h 52mnonstop
Frontier Logo
3:45 pm - 6:41 pmSJU-IAD
3h 56mnonstop
$171Frontier
Find Deal
Sun, Nov 2 - Sun, Nov 9
Spirit Airlines Logo
4:20 pm - 12:54 amBWI-SJU
8h 34m1 stop
Spirit Airlines Logo
7:05 am - 11:08 amSJU-BWI
4h 03mnonstop
$179Spirit Airlines
Find Deal
Sat, Oct 18 - Sun, Oct 26
Spirit Airlines Logo
8:17 pm - 10:56 amBWI-SJU
14h 39m1 stop
Spirit Airlines Logo
7:05 am - 11:08 amSJU-BWI
4h 03mnonstop
$180Spirit Airlines
Find Deal
Sat, Oct 18 - Thu, Oct 23
Frontier Logo
7:26 pm - 12:18 amIAD-SJU
3h 52mnonstop
Frontier Logo
3:45 pm - 6:41 pmSJU-IAD
3h 56mnonstop
$181Frontier
Find Deal
Sun, Nov 2 - Sun, Nov 9
JetBlue Logo
8:30 am - 12:15 pmDCA-SJU
3h 45mnonstop
JetBlue Logo
6:05 pm - 9:57 pmSJU-DCA
3h 52mnonstop
$219JetBlue
Find Deal
Wed, Oct 15 - Fri, Oct 17
JetBlue Logo
8:30 am - 12:15 pmDCA-SJU
3h 45mnonstop
JetBlue Logo
6:02 pm - 9:59 pmSJU-DCA
3h 57mnonstop
$221JetBlue
Find Deal
Mon, Oct 20 - Tue, Oct 28
Delta Logo
6:00 am - 2:10 pmIAD-SJU
7h 10m1 stop
Delta Logo
7:00 am - 5:01 pmSJU-IAD
11h 01m1 stop
$245Delta
Find Deal
Mon, Dec 8 - Wed, Dec 10
Delta Logo
6:06 am - 2:10 pmDCA-SJU
7h 04m1 stop
Delta Logo
3:32 pm - 11:39 pmSJU-DCA
9h 07m1 stop
$245Delta
Find Deal
Mon, Dec 8 - Wed, Dec 10
American Airlines Logo
5:30 pm - 11:55 pmDCA-SJU
6h 25m1 stop
American Airlines Logo
2:47 pm - 9:29 pmSJU-DCA
7h 42m1 stop
$272American Airlines
Find Deal
Sat, Nov 1 - Thu, Nov 6

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
Nov 16
IAD7:26 pmWashington, D.C. Dulles Intl
3h 52m
SJU12:18 amSan Juan Luis Munoz Marin Intl
Nov 21
SJU4:08 pmSan Juan Luis Munoz Marin Intl
4h 03m
IAD7:11 pmWashington, D.C. Dulles Intl
$168
Find similar
Frontier
Nov 2
IAD7:26 pmWashington, D.C. Dulles Intl
3h 52m
SJU12:18 amSan Juan Luis Munoz Marin Intl
Nov 9
SJU3:45 pmSan Juan Luis Munoz Marin Intl
3h 56m
IAD6:41 pmWashington, D.C. Dulles Intl
$171
Find similar
Frontier
Nov 2
IAD7:26 pmWashington, D.C. Dulles Intl
3h 52m
SJU12:18 amSan Juan Luis Munoz Marin Intl
Nov 9
SJU3:45 pmSan Juan Luis Munoz Marin Intl
3h 56m
IAD6:41 pmWashington, D.C. Dulles Intl
$181
Find similar

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

Our best Spirit Airlines deals on Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flight tickets
Spirit Airlines
Oct 18
BWI4:20 pmBaltimore/Washington
8h 34m
1 stop
SJU12:54 amSan Juan Luis Munoz Marin Intl
Oct 26
SJU7:05 amSan Juan Luis Munoz Marin Intl
4h 03m
BWI11:08 amBaltimore/Washington
$179
Find similar
Spirit Airlines
Oct 18
BWI8:17 pmBaltimore/Washington
14h 39m
1 stop
SJU10:56 amSan Juan Luis Munoz Marin Intl
Oct 23
SJU7:05 amSan Juan Luis Munoz Marin Intl
4h 03m
BWI11:08 amBaltimore/Washington
$180
Find similar
Spirit Airlines
Oct 2
BWI8:42 pmBaltimore/Washington
4h 01m
SJU12:43 amSan Juan Luis Munoz Marin Intl
Oct 6
SJU2:49 amSan Juan Luis Munoz Marin Intl
9h 51m
1 stop
BWI12:40 pmBaltimore/Washington
$184
Find similar

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 September 17, 2025.
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

Sun 11/16

7:26 pm-12:18 am

Nonstop3h 52m

San Juan Luis Munoz Marin Intl

Fri 11/21

4:08 pm-7:11 pm

Nonstop4h 03m

$168

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 11/2

7:26 pm-12:18 am

Nonstop3h 52m

San Juan Luis Munoz Marin Intl

Sun 11/9

3:45 pm-6:41 pm

Nonstop3h 56m

$171

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 10/18

4:20 pm-12:54 am

1 stop8h 34m

San Juan Luis Munoz Marin Intl

Sun 10/26

7:05 am-11:08 am

Nonstop4h 03m

$179

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 10/18

8:17 pm-10:56 am

1 stop14h 39m

San Juan Luis Munoz Marin Intl

Thu 10/23

7:05 am-11:08 am

Nonstop4h 03m

$180

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 11/2

7:26 pm-12:18 am

Nonstop3h 52m

San Juan Luis Munoz Marin Intl

Sun 11/9

3:45 pm-6:41 pm

Nonstop3h 56m

$181

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Wed 10/15

8:30 am-12:15 pm

Nonstop3h 45m

San Juan Luis Munoz Marin Intl

Fri 10/17

6:05 pm-9:57 pm

Nonstop3h 52m

$219

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 10/20

8:30 am-12:15 pm

Nonstop3h 45m

San Juan Luis Munoz Marin Intl

Tue 10/28

6:02 pm-9:59 pm

Nonstop3h 57m

$221

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 12/8

6:00 am-2:10 pm

1 stop7h 10m

San Juan Luis Munoz Marin Intl

Wed 12/10

7:00 am-5:01 pm

1 stop11h 01m

$245

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Mon 12/8

6:06 am-2:10 pm

1 stop7h 04m

San Juan Luis Munoz Marin Intl

Wed 12/10

3:32 pm-11:39 pm

1 stop9h 07m

$245

Washington, D.C.San Juan

DCA - SJU

DCASJU

Washington, D.C. Reagan-National

Sat 11/1

5:30 pm-11:55 pm

1 stop6h 25m

San Juan Luis Munoz Marin Intl

Thu 11/6

2:47 pm-9:29 pm

1 stop7h 42m

$272

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $294.

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 $363. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday 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 $482.

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 evening are often more expensive with an average ticket price of $576.

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

Fly from Baltimore/Washington 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 $431 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 $353 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 September 2025, prices for Washington, D.C. to San Juan Luis Munoz Marin Intl Airport flights are approximately 93% more expensive 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

$141

Fastest flight time

3h 40m

Direct flights

Every day
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Washington, D.C. in the past 72 hours is $141. 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 $271.
The fastest flight from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport takes 3h 40m
Direct flights go from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport every day.
Search flight deals

  • 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 45m.

  • 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 $85Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $115Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $145Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $164Free CancellationRating
7.9
7,961 reviews
Search Delta flights
JetBluePriceFrom $168Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
United AirlinesPriceFrom $199Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
SouthwestPriceFrom $220Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

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

    Across 5 JetBlue flights from Washington, D.C. to San Juan Luis Munoz Marin Intl Airport this week, the average price was $400, with the best JetBlue deals starting from $168 round-trip. 2,914 users have rated JetBlue on momondo, with an average score of 7.2/10.

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
Caguas
Humacao
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.

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