Cheap flights from Washington, D.C. Dulles Intl Airport to San Juan from $106

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 1/15. 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

Enter your travel dates to find the best prices.
Frontier Logo
9:58 pm - 11:16 am
IAD
-
SJU
12h 18m1 stop
Frontier Logo
9:23 pm - 7:40 am
SJU
-
IAD
11h 17m1 stop
$180Frontier
Mon, Jan 5 - Sat, Jan 10
Frontier Logo
8:07 pm - 2:25 am
IAD
-
SJU
29h 18m1 stop
Frontier Logo
6:00 am - 6:07 pm
SJU
-
IAD
13h 07m1 stop
$181Frontier
Thu, Feb 19 - Mon, Feb 23
Frontier Logo
8:26 pm - 1:20 am
IAD
-
SJU
3h 54mnonstop
Frontier Logo
7:35 am - 4:46 pm
SJU
-
IAD
10h 11m1 stop
$182Frontier
Mon, Jan 5 - Fri, Jan 9
Frontier Logo
9:07 pm - 9:54 am
IAD
-
SJU
11h 47m1 stop
Frontier Logo
4:17 pm - 7:25 pm
SJU
-
IAD
4h 08mnonstop
$183Frontier
Sun, Feb 22 - Mon, Mar 2
Frontier Logo
2:09 pm - 2:39 am
IAD
-
SJU
11h 30m1 stop
Frontier Logo
3:11 pm - 6:24 pm
SJU
-
IAD
4h 13mnonstop
$184Frontier
Fri, Jan 2 - Mon, Jan 12
Frontier Logo
8:20 pm - 1:05 am
IAD
-
SJU
3h 45mnonstop
Frontier Logo
5:25 pm - 9:25 am
SJU
-
IAD
17h 00m1 stop
$186Frontier
Sat, Feb 14 - Sat, Feb 28
Frontier Logo
8:26 pm - 1:20 am
IAD
-
SJU
3h 54mnonstop
Frontier Logo
3:11 pm - 6:24 pm
SJU
-
IAD
4h 13mnonstop
$187Frontier
Sat, Jan 3 - Sun, Jan 11
Frontier Logo
8:26 pm - 1:20 am
IAD
-
SJU
3h 54mnonstop
Frontier Logo
7:35 am - 3:27 pm
SJU
-
IAD
8h 52m1 stop
$188Frontier
Sun, Jan 4 - Mon, Jan 12
Frontier Logo
8:26 pm - 1:20 am
IAD
-
SJU
3h 54mnonstop
Frontier Logo
7:35 am - 4:50 pm
SJU
-
IAD
10h 15m1 stop
$189Frontier
Sat, Jan 3 - Wed, Jan 7
Multiple Airlines Logo
8:26 pm - 1:20 am
IAD
-
SJU
3h 54mnonstop
Multiple Airlines Logo
12:53 pm - 1:01 pm
SJU
-
IAD
25h 08m1 stop
$190Multiple Airlines
Sun, Jan 4 - Wed, Jan 7

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
Jan 5
IAD9:58 pmWashington, D.C. Dulles Intl
12h 18m
1 stop
SJU11:16 amSan Juan Luis Munoz Marin Intl
Jan 10
SJU9:23 pmSan Juan Luis Munoz Marin Intl
11h 17m
1 stop
IAD7:40 amWashington, D.C. Dulles Intl
Frontier
Feb 19
IAD8:07 pmWashington, D.C. Dulles Intl
29h 18m
1 stop
SJU2:25 amSan Juan Luis Munoz Marin Intl
Feb 23
SJU6:00 amSan Juan Luis Munoz Marin Intl
13h 07m
1 stop
IAD6:07 pmWashington, D.C. Dulles Intl
Frontier
Jan 5
IAD8:26 pmWashington, D.C. Dulles Intl
3h 54m
SJU1:20 amSan Juan Luis Munoz Marin Intl
Jan 11
SJU6:18 pmSan Juan Luis Munoz Marin Intl
14h 22m
1 stop
IAD7:40 amWashington, D.C. Dulles Intl

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

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport flight tickets
United Airlines
Jan 6
IAD5:32 pmWashington, D.C. Dulles Intl
3h 50m
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Jan 14
SJU8:10 amSan Juan Luis Munoz Marin Intl
4h 05m
IAD11:15 amWashington, D.C. Dulles Intl
United Airlines
Jan 6
IAD6:00 amWashington, D.C. Dulles Intl
7h 40m
1 stop
SJU2:40 pmSan Juan Luis Munoz Marin Intl
Jan 14
SJU8:10 amSan Juan Luis Munoz Marin Intl
4h 05m
IAD11:15 amWashington, 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 December 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 1/5

9:58 pm-11:16 am

1 stop12h 18m

San Juan Luis Munoz Marin Intl

Sat 1/10

9:23 pm-7:40 am

1 stop11h 17m

$180

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Thu 2/19

8:07 pm-2:25 am

1 stop29h 18m

San Juan Luis Munoz Marin Intl

Mon 2/23

6:00 am-6:07 pm

1 stop13h 07m

$181

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Mon 1/5

8:26 pm-1:20 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Fri 1/9

7:35 am-4:46 pm

1 stop10h 11m

$182

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 2/22

9:07 pm-9:54 am

1 stop11h 47m

San Juan Luis Munoz Marin Intl

Mon 3/2

4:17 pm-7:25 pm

Nonstop4h 08m

$183

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Fri 1/2

2:09 pm-2:39 am

1 stop11h 30m

San Juan Luis Munoz Marin Intl

Mon 1/12

3:11 pm-6:24 pm

Nonstop4h 13m

$184

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 2/14

8:20 pm-1:05 am

Nonstop3h 45m

San Juan Luis Munoz Marin Intl

Sat 2/28

5:25 pm-9:25 am

1 stop17h 00m

$186

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 1/3

8:26 pm-1:20 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Sun 1/11

3:11 pm-6:24 pm

Nonstop4h 13m

$187

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 1/4

8:26 pm-1:20 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Mon 1/12

7:35 am-3:27 pm

1 stop8h 52m

$188

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 1/3

8:26 pm-1:20 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Wed 1/7

7:35 am-4:50 pm

1 stop10h 15m

$189

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 1/4

8:26 pm-1:20 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Wed 1/7

12:53 pm-1:01 pm

1 stop25h 08m

$190

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 $310.

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 $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. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $458.

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 $427.

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 $405 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 $326 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 December 2025, prices for Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport flights are approximately 36% 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

$130

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 $130. 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 $282.
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 45m.

  • 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 $104Free CancellationRating
5.8
3,076 reviews
Search Frontier flights
DeltaPriceFrom $148Free CancellationRating
7.9
8,014 reviews
Search Delta flights
Spirit AirlinesPriceFrom $151Free CancellationRating
6.3
8,194 reviews
Search Spirit Airlines flights
JetBluePriceFrom $168Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
American AirlinesPriceFrom $219Free CancellationRating
7.2
11,053 reviews
Search American Airlines flights
United AirlinesPriceFrom $267Free CancellationRating
7.4
9,103 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 14 times per week, with 9,103 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 $267 (round-trip), much lower than the average airfare cost of $485 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 $104, round-trip. It should be noted that an average Frontier flight deal for this route in this time was higher, at $283 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. 3,076 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
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?

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
Thu 1/22
Thu 1/29

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