Cheap Flights from Washington Dulles to San Juan Luis Munoz Marin

Compare Washington Dulles to San Juan Luis Munoz Marin flight deals

Find the cheapest month or even day of the year to fly to San Juan Luis Munoz Marin

Book the best San Juan Luis Munoz Marin fare with no extra fees

Flight deals from Washington Dulles to San Juan Luis Munoz Marin

Looking for a cheap last-minute deal or the best round-trip flight from Washington Dulles Airport to San Juan Luis Munoz Marin Airport? If you want to travel next month, round-trip fares start from AED 1,134. Find the lowest prices on one-way and round-trip tickets right here.

San Juan.AED 501 per passenger.Departing Fri, Aug 28.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Fri, Aug 28, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 501, select.

San Juan.AED 502 per passenger.Departing Tue, Sep 29.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Tue, Sep 29, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 502, select.

San Juan.AED 542 per passenger.Departing Wed, Jul 8.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Wed, Jul 8, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 542, select.

San Juan.AED 571 per passenger.Departing Sun, Nov 1.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Sun, Nov 1, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 571, select.

San Juan.AED 613 per passenger.Departing Tue, Jun 16.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Tue, Jun 16, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 613, select.

San Juan.AED 617 per passenger.Departing Tue, Oct 6.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Tue, Oct 6, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 617, select.

San Juan.AED 625 per passenger.Departing Sun, Jan 24.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departing from Washington Dulles on Sun, Jan 24, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 625, select.

San Juan.AED 655 per passenger.Departing Fri, Aug 28.One-way flight with United.Outbound direct flight with United departing from Washington Dulles on Fri, Aug 28, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 655, select.

San Juan.AED 657 per passenger.Departing Sun, Nov 1.One-way flight with United.Outbound direct flight with United departing from Washington Dulles on Sun, Nov 1, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 657, select.

San Juan.AED 661 per passenger.Departing Tue, Dec 1.One-way flight with United.Outbound direct flight with United departing from Washington Dulles on Tue, Dec 1, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 661, select.

San Juan.AED 662 per passenger.Departing Fri, Sep 4.One-way flight with United.Outbound direct flight with United departing from Washington Dulles on Fri, Sep 4, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 662, select.

San Juan.AED 662 per passenger.Departing Sun, Jan 17.One-way flight with United.Outbound direct flight with United departing from Washington Dulles on Sun, Jan 17, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 662, select.

San Juan.AED 663 per passenger.Departing Mon, Mar 1.One-way flight with United.Outbound direct flight with United departing from Washington Dulles on Mon, Mar 1, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 663, select.

San Juan.AED 663 per passenger.Departing Tue, Oct 6.One-way flight with United.Outbound direct flight with United departing from Washington Dulles on Tue, Oct 6, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 663, select.

San Juan.AED 663 per passenger.Departing Mon, Jun 22.One-way flight with United.Outbound direct flight with United departing from Washington Dulles on Mon, Jun 22, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 663, select.

San Juan.AED 663 per passenger.Departing Sat, Jul 4.One-way flight with United.Outbound direct flight with United departing from Washington Dulles on Sat, Jul 4, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From AED 663, select.

Find the cheapest month to fly from Washington Dulles to San Juan Luis Munoz Marin

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to San Juan Luis Munoz Marin flights are currently cheapest in August.

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Direct flights from Washington Dulles to San Juan Luis Munoz Marin

Washington Dulles to San Juan Luis Munoz Marin: Alternative routes

Compare routes from Washington Dulles to San Juan below. You may find an airport to fly into that's cheaper, faster, or easier than San Juan Luis Munoz Marin.

Washington, D.C. to San Juan: Flight information

The things to know before you go.

Cheapest flight found	AED 501
Cheapest month to fly	August
Average flight time	3 hrs, 54 mins
Most popular airline	Air Canada
Average flights per week	34

Finding cheap flights from Washington Dulles to San Juan Luis Munoz Marin: Frequently asked questions

How much are round-trip flights from Washington Dulles to San Juan Luis Munoz Marin?

The best price we found for a round-trip flight from Washington Dulles to San Juan Luis Munoz Marin is AED 983. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Washington Dulles to San Juan Luis Munoz Marin?

3 hours and 54 minutes is the average flight time from Washington Dulles to San Juan Luis Munoz Marin.

Which airlines fly direct from Washington Dulles to San Juan Luis Munoz Marin?

Air Canada, United and Brussels Airlines fly direct from Washington Dulles to San Juan Luis Munoz Marin.

How many flights are there a week from Washington Dulles to San Juan Luis Munoz Marin?

There are 34 flights per week flying from Washington Dulles to San Juan Luis Munoz Marin, as of May 2026.

When is the cheapest time to fly from Washington Dulles to San Juan Luis Munoz Marin?

The cheapest month to fly from Washington Dulles to San Juan Luis Munoz Marin is usually October.

Which upcoming date is cheapest to fly from Washington Dulles Airport to San Juan Luis Munoz Marin Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to San Juan Luis Munoz Marin Airport on Thursday, October 29, 2026.

Can I get a direct flight from Washington Dulles Airport to San Juan Luis Munoz Marin Airport?

Yes – the average flight time is 3 hours and 54 minutes.

How can I find the best flight deal to San Juan Luis Munoz Marin?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan Luis Munoz Marin but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to San Juan?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Washington Dulles Airport to San Juan Luis Munoz Marin?

Currently, Frontier Airlines and United offer the cheapest flight tickets to San Juan Luis Munoz Marin.

Flying from Washington Dulles International Airport (IAD) to Luis Munoz Marin International Airport (SJU): what you need to know

The average duration of a direct flight from Washington Dulles International Airport to Luis Munoz Marin International Airport is 3 hours 50 minutes.
Washington DC and San Juan follow the same timezone, UTC-4.
Each week, there are 11 Washington Dulles International Airport to Luis Munoz Marin International Airport flights. If you'd like to get going as soon as possible, select the 08:25 United Airlines flight. If you'd rather make the most of your time before flying, the latest flight is at 17:36 with United Airlines.
Leave enough time to catch your IAD to SJU flight. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.
Traveling during a peak month such as April? School holidays and other popular seasons can result in longer queues and delays at airport checkpoints. Play it safe and arrive up to four hours before international flights and two hours before a domestic departure.
Getting to San Juan (and then exploring more of Puerto Rico!) is a breeze with United Airlines. This popular carrier offers direct flights from Washington Dulles International Airport to Luis Munoz Marin International Airport.
United Airlines is the top choice for travelers on this route.
With 73.86% of services arriving as scheduled, United Airlines is the most punctual carrier offering IAD to SJU flights.
We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from Washington Dulles International Airport to Luis Munoz Marin International Airport, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to tour your chosen city. Top stopovers between IAD and SJU include:
- Raleigh-Durham International Airport
- Cyril E. King Airport
- Orlando International Airport

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Luis Munoz Marin International Airport (SJU)

At the moment, AED 501 is the lowest price we've found for a one-way Washington Dulles International Airport to Luis Munoz Marin International Airport flight. The best price for a return plane ticket is AED 983. Keep in mind that fares may change due to availability when booking.
Book nine months before flying. After crunching the numbers on our calendar, this is how far you'll want to book ahead to secure cheap tickets from IAD to SJU.
Organize your trip for August. That's the cheapest month for flights from Washington Dulles International Airport to Luis Munoz Marin International Airport. If you're flexible with your travel dates, use the 'Whole month' tool to find the cheapest airfare across each month.
Save time searching for cheap flights from IAD to SJU by creating a Price Alert. You'll get an email or notification on the app when a lower fare becomes available.
Tailor your flights using filters. Pick your ideal arrival and departure times, airlines and total journey duration. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from Washington Dulles International Airport to Luis Munoz Marin International Airport.

Handy information about Washington Dulles International Airport (IAD)

IAD is located at 1 Saarinen Circle.
74.39% of flights that leave from Washington Dulles International Airport land at their destination on schedule.
To reach Washington Dulles International Airport from central Washington DC, it'll take around 50 minutes if you're traveling by car. This depends on traffic, however. It's approximately 56 kilometers from the airport to the city center.
The trip when using public transport takes about 3 hours 25 minutes.
Booked an early flight from Washington Dulles International Airport to Luis Munoz Marin International Airport? Avoid the last-minute rush to the terminal (and catch some extra z's) by picking one of these hotels close to IAD:

Arriving at Luis Munoz Marin International Airport (SJU)

If you have a late Washington Dulles International Airport to Luis Munoz Marin International Airport flight, nothing beats the convenience of being near the terminal. Grab your luggage from the carousel and then be tucked up in bed shortly after at one of these accommodation options near SJU:
Grab a Luis Munoz Marin International Airport rental car and discover San Juan and beyond with your own set of wheels. Sixt, Ace Rent a Car and U-Save are well-known companies you can book with here.
Reserving your vehicle from Luis Munoz Marin International Airport around two weeks ahead boosts your odds of scoring a great price.

Getting from Luis Munoz Marin International Airport (SJU) to central San Juan

Luis Munoz Marin International Airport to central San Juan has a drive time of about 10 minutes. It's approximately 8 kilometers away.
When traveling by public transport, expect a journey of about 55 minutes.

When to fly to Luis Munoz Marin International Airport (SJU)

It's time to work out your dates for your flight from Washington Dulles International Airport to Luis Munoz Marin International Airport. July is the most popular month to head to San Juan. If you prefer a quieter vibe, go in May.
Before locking in your flight from Washington Dulles International Airport to Luis Munoz Marin International Airport, consider the type of weather you like. September is the warmest month in San Juan, with the temperature ranging from 23ºC (73ºF) to 33ºC (91ºF).
February has average temperatures of between 20ºC (68ºF) and 28ºC (82ºF). Search for cheap tickets from IAD to SJU sometime then if you like traveling in cooler conditions.

Explore more of Puerto Rico

You've visited San Juan, now it's time to discover other parts of Puerto Rico. Journey around 10 kilometers west to Bayamon to tick off its top attractions. From Plazoleta Ignacio Zorrilla, La Plaza de la Bomba Puertorriqueña to Monumento a los Trovadores and Parque Palm Court, you've got a jam-packed schedule ahead.
Around 11 kilometers east of San Juan, Carolina is another favorite stop in Puerto Rico. Experience this destination's highlights firsthand at Isla Verde Beach, Parque de Doble A Roberto Clemente Walker and Drone Zone Track.