Cheap flights from Washington, D.C. Dulles Intl Airport to San Juan from $83

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. Dulles Intl Airport to San Juan departing on 11/2. 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. Dulles Intl Airport to San Juan

Cheap round-trip flights

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Frontier Logo
6:00 am - 3:19 pmIAD-SJU
8h 19m1 stop
Frontier Logo
3:45 pm - 6:41 pmSJU-IAD
3h 56mnonstop
$184Frontier
Find Deal
Mon, Nov 3 - Thu, Nov 13
Delta Logo
6:10 am - 2:16 pmIAD-SJU
7h 06m1 stop
Delta Logo
6:15 am - 12:00 pmSJU-IAD
6h 45m1 stop
$185Delta
Find Deal
Mon, Jan 12 - Fri, Jan 23
Frontier Logo
2:11 pm - 11:09 pmIAD-SJU
7h 58m1 stop
Frontier Logo
6:30 am - 9:43 amSJU-IAD
4h 13mnonstop
$187Frontier
Find Deal
Mon, Nov 24 - Thu, Dec 4
Frontier Logo
3:37 pm - 2:50 amIAD-SJU
10h 13m1 stop
Frontier Logo
11:29 am - 2:42 pmSJU-IAD
4h 13mnonstop
$189Frontier
Find Deal
Sun, Jan 25 - Fri, Jan 30
Frontier Logo
8:06 pm - 12:53 amIAD-SJU
3h 47mnonstop
Frontier Logo
6:30 am - 9:43 amSJU-IAD
4h 13mnonstop
$191Frontier
Find Deal
Sun, Nov 23 - Thu, Dec 4
Frontier Logo
4:04 pm - 1:32 amIAD-SJU
8h 28m1 stop
Frontier Logo
3:45 pm - 6:41 pmSJU-IAD
3h 56mnonstop
$192Frontier
Find Deal
Sun, Nov 2 - Thu, Nov 6
Frontier Logo
8:10 pm - 1:04 amIAD-SJU
3h 54mnonstop
Frontier Logo
6:59 pm - 11:45 amSJU-IAD
17h 46m2 stops
$193Frontier
Find Deal
Sat, Jan 10 - Mon, Jan 12
Multiple Airlines Logo
6:00 am - 1:42 amIAD-SJU
18h 42m2 stops
Multiple Airlines Logo
11:29 am - 2:42 pmSJU-IAD
4h 13mnonstop
$194Multiple Airlines
Find Deal
Mon, Jan 12 - Fri, Jan 23
United Airlines Logo
8:27 am - 1:17 pmIAD-SJU
3h 50mnonstop
United Airlines Logo
8:10 am - 11:15 amSJU-IAD
4h 05mnonstop
$216United Airlines
Find Deal
Mon, Feb 2 - Fri, Feb 6
Delta Logo
12:30 pm - 11:58 pmIAD-SJU
10h 28m1 stop
Delta Logo
6:20 pm - 12:07 amSJU-IAD
6h 47m1 stop
$225Delta
Find Deal
Mon, Feb 2 - Fri, Feb 6

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

Our best Frontier deals on Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Nov 3
IAD6:00 amWashington, D.C. Dulles Intl
8h 19m
1 stop
SJU3:19 pmSan Juan Luis Munoz Marin Intl
Nov 13
SJU3:45 pmSan Juan Luis Munoz Marin Intl
3h 56m
IAD6:41 pmWashington, D.C. Dulles Intl
Frontier
Nov 24
IAD2:11 pmWashington, D.C. Dulles Intl
7h 58m
1 stop
SJU11:09 pmSan Juan Luis Munoz Marin Intl
Dec 4
SJU6:30 amSan Juan Luis Munoz Marin Intl
4h 13m
IAD9:43 amWashington, D.C. Dulles Intl
Frontier
Jan 25
IAD3:37 pmWashington, D.C. Dulles Intl
10h 13m
1 stop
SJU2:50 amSan Juan Luis Munoz Marin Intl
Jan 30
SJU11:29 amSan Juan Luis Munoz Marin Intl
4h 13m
IAD2:42 pmWashington, D.C. Dulles Intl

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

Our best Delta deals on Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport flight tickets
Delta
Jan 12
IAD6:10 amWashington, D.C. Dulles Intl
7h 06m
1 stop
SJU2:16 pmSan Juan Luis Munoz Marin Intl
Jan 23
SJU6:15 amSan Juan Luis Munoz Marin Intl
6h 45m
1 stop
IAD12:00 pmWashington, D.C. Dulles Intl
Delta
Feb 2
IAD12:30 pmWashington, D.C. Dulles Intl
10h 28m
1 stop
SJU11:58 pmSan Juan Luis Munoz Marin Intl
Feb 6
SJU6:20 pmSan Juan Luis Munoz Marin Intl
6h 47m
1 stop
IAD12:07 amWashington, D.C. Dulles Intl
Delta
Nov 2
IAD7:05 amWashington, D.C. Dulles Intl
9h 28m
1 stop
SJU5:33 pmSan Juan Luis Munoz Marin Intl
Nov 11
SJU3:32 pmSan Juan Luis Munoz Marin Intl
7h 00m
1 stop
IAD9:32 pmWashington, D.C. Dulles Intl

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 October 23, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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 11/3

6:00 am-3:19 pm

1 stop8h 19m

San Juan Luis Munoz Marin Intl

Thu 11/13

3:45 pm-6:41 pm

Nonstop3h 56m

$184

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 1/12

6:10 am-2:16 pm

1 stop7h 06m

San Juan Luis Munoz Marin Intl

Fri 1/23

6:15 am-12:00 pm

1 stop6h 45m

$185

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 11/24

2:11 pm-11:09 pm

1 stop7h 58m

San Juan Luis Munoz Marin Intl

Thu 12/4

6:30 am-9:43 am

Nonstop4h 13m

$187

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 1/25

3:37 pm-2:50 am

1 stop10h 13m

San Juan Luis Munoz Marin Intl

Fri 1/30

11:29 am-2:42 pm

Nonstop4h 13m

$189

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 11/23

8:06 pm-12:53 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Thu 12/4

6:30 am-9:43 am

Nonstop4h 13m

$191

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 11/2

4:04 pm-1:32 am

1 stop8h 28m

San Juan Luis Munoz Marin Intl

Thu 11/6

3:45 pm-6:41 pm

Nonstop3h 56m

$192

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 1/10

8:10 pm-1:04 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Mon 1/12

6:59 pm-11:45 am

2 stops17h 46m

$193

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 1/12

6:00 am-1:42 am

2 stops18h 42m

San Juan Luis Munoz Marin Intl

Fri 1/23

11:29 am-2:42 pm

Nonstop4h 13m

$194

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 2/2

8:27 am-1:17 pm

Nonstop3h 50m

San Juan Luis Munoz Marin Intl

Fri 2/6

8:10 am-11:15 am

Nonstop4h 05m

$216

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 2/2

12:30 pm-11:58 pm

1 stop10h 28m

San Juan Luis Munoz Marin Intl

Fri 2/6

6:20 pm-12:07 am

1 stop6h 47m

$225

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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 June, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $330.

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. Dulles Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $359. 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. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $469.

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 $447.

What is the cheapest Washington, D.C. Dulles Intl 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. Dulles Intl - 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. Dulles Intl Airport 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 $419 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. Dulles Intl Airport for as low as $344 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl 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. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport flights?

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

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

As of October 2025, prices for Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport flights are approximately 37% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport (IAD to SJU) flight deals and tips

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

Best Price Found

$69

Fastest flight time

3h 45m

Direct flights

Every day
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Washington, D.C. Dulles Intl Airport in the past 72 hours is $69. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $296.
The fastest flight from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport takes 3h 45m
Direct flights go from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport every day.
  • How far is Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl by plane?

    San Juan Luis Munoz Marin Intl is 1573.5 mi away from Washington, D.C. Dulles Intl. A reasonable flight in good conditions will take 3h 47m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport 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 required travel and health documents for your San Juan Luis Munoz Marin Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $115Free CancellationRating
5.8
3,128 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $135Free CancellationRating
6.3
8,098 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $145Free CancellationRating
7.2
11,028 reviews
Search American Airlines flights
DeltaPriceFrom $158Free CancellationRating
7.9
7,981 reviews
Search Delta flights
JetBluePriceFrom $161Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
United AirlinesPriceFrom $275Free CancellationRating
7.4
8,991 reviews
Search United Airlines flights
  • United Airlines Flights From Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport

    United Airlines flies from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport around 4 times per week, with 8,991 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport in the last 72 hours was $275 (round-trip), much lower than the average airfare cost of $500 for United Airlines flights on this route.

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

    The best Frontier deal for Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport flight tickets found on momondo in the last 72 hours was $115, round-trip. It should be noted that an average Frontier flight deal for this route in this time was higher, at $258 round-trip. Frontier operates 2 flights out of Washington, D.C. Dulles Intl Airport into San Juan Luis Munoz Marin Intl Airport in an average week, so prices vary by time and availability. 3,128 Frontier reviews by users on momondo have scored the airline at 5.8/10.

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?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to San Juan. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to San Juan from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

If you are not ready to book a flight from Washington, D.C. to San Juan now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Juan and let you know when they change.

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1 adult
Sat 11/22
Sat 11/29

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