SJU - IAD

$53 Find Cheap Flights from San Juan to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Juan to Dulles Intl departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Washington, D.C., as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Expert advice
Booking Insights
Flights Deals

Cheap Flights from San Juan to Dulles Intl (SJU-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Juan to Dulles Intl

Thu, Oct 23 - Sun, Oct 26
Frontier Logo
7:00 am - 10:56 amSJU-IAD
3h 56mnonstop
Frontier Logo
11:44 am - 3:36 pmIAD-SJU
3h 52mnonstop
$128Frontier
Find Deal
Thu, Nov 6 - Sun, Nov 9
Frontier Logo
6:25 am - 9:21 amSJU-IAD
3h 56mnonstop
Frontier Logo
10:09 am - 3:01 pmIAD-SJU
3h 52mnonstop
$176Frontier
Find Deal
Thu, Aug 28 - Sun, Aug 31
Frontier Logo
6:51 am - 10:47 amSJU-IAD
3h 56mnonstop
Frontier Logo
11:32 am - 3:29 pmIAD-SJU
3h 57mnonstop
$185Frontier
Find Deal
Fri, Nov 7 - Sun, Nov 9
United Airlines Logo
4:52 pm - 11:59 pmSJU-IAD
8h 07m1 stop
United Airlines Logo
5:32 pm - 10:22 pmIAD-SJU
3h 50mnonstop
$186United Airlines
Find Deal
Sat, Aug 23 - Sat, Aug 30
Frontier Logo
6:30 am - 10:26 amSJU-IAD
3h 56mnonstop
Frontier Logo
11:11 am - 3:08 pmIAD-SJU
3h 57mnonstop
$187Frontier
Find Deal
Thu, Oct 30 - Tue, Nov 4
American Airlines Logo
4:45 pm - 9:55 amSJU-IAD
17h 10m1 stop
American Airlines Logo
7:55 am - 8:48 pmIAD-SJU
11h 53m1 stop
$195American Airlines
Find Deal
Thu, Nov 6 - Mon, Nov 10
Delta Logo
7:00 am - 4:31 pmSJU-IAD
10h 31m1 stop
Delta Logo
6:00 am - 2:15 pmIAD-SJU
7h 15m1 stop
$215Delta
Find Deal
Thu, Nov 6 - Mon, Nov 10
Delta Logo
7:00 am - 4:31 pmSJU-IAD
10h 31m1 stop
Delta Logo
7:00 am - 2:15 pmIAD-SJU
6h 15m1 stop
$225Delta
Find Deal
Fri, Oct 17 - Mon, Oct 20
United Airlines Logo
4:55 pm - 8:52 pmSJU-IAD
3h 57mnonstop
United Airlines Logo
8:39 am - 12:34 pmIAD-SJU
3h 55mnonstop
$226United Airlines
Find Deal
Wed, Aug 13 - Sun, Aug 17
American Airlines Logo
3:50 pm - 8:42 amSJU-IAD
16h 52m1 stop
American Airlines Logo
6:34 am - 10:56 pmIAD-SJU
16h 22m1 stop
$240American Airlines
Find Deal
Expert advice

Expert advice for your flight from San Juan to Dulles Intl

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
SJU

San Juan Airport is efficient and compact. Stock up on food before late-night flights as most shops close early.

Read more about SJUby Gabriel Leigh
IAD

The Silver Line Metro connects Dulles to downtown D.C. in about 50 minutes, offering a convenient travel option.

Read more about IADby Stefanie Waldek
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on SJU

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Booking Insights

KAYAK's insights & trends for San Juan to Dulles Intl flights

Get data-powered insights and trends into flights from San Juan to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Juan to Washington Dulles Airport?

The average price of all round-trip flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from San Juan to Washington Dulles Airport, look for departures on Thursdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Washington Dulles Airport, Tuesday is the cheapest day to fly and Friday is the most expensive.

What is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport is July, where tickets cost $258 (return) on average. On the other hand, the most expensive months are April and November, where the average cost of round-trip tickets is $545 and $496 respectively.

How far in advance should I book a flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport, you should book around 2 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$53
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 5% increase in price.
Flight from San Juan to Washington Dulles Airport

When to book flights from San Juan to Dulles Intl

Are your dates flexible? Find out the best times to travel from San Juan to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Juan to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport was $53 for a one-way ticket and $128 for a round-trip.

  • Do I need a passport to fly between San Juan and Washington Dulles Airport?

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Juan and on arrival in Washington Dulles Airport.

  • Which airports will I be using when flying from San Juan to Washington Dulles Airport?

    San Juan and Washington Dulles Airport are both served by 1 main airport. You will leave San Juan from San Juan Luis Munoz Marin Intl and will be arriving at Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from San Juan to Washington Dulles Airport?

    All the following airlines offer inflight Wi-Fi service on the San Juan to Washington Dulles Airport flight route: JetBlue, Iberia, Finnair, British Airways, Delta, and Air Canada.

  • Which aircraft models fly most regularly from San Juan to Washington Dulles Airport?

    The Airbus A321neo is the aircraft model that flies most regularly on the San Juan to Washington Dulles Airport flight route.

  • Which airline alliances offer flights from San Juan to Washington Dulles Airport?

    Star Alliance is the only airline alliance operating flights between San Juan and Washington Dulles Airport.

  • On which days can I fly direct from San Juan to Washington Dulles Airport?

    There are nonstop flights from San Juan to Washington Dulles Airport on a daily basis.

  • Which is the best airline for flights from San Juan to Washington, D.C., Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Juan to Washington, D.C. are Delta and United Airlines. With an average price for the route of $431 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $458 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Juan to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Juan to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Juan to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from San Juan is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Juan to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to San Juan with another airline. Booking your flights between San Juan and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Juan to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from San Juan up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $133 or less one-way and $221 or less round-trip.

Prefer to fly direct from San Juan to Washington Dulles Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl.
Find which airlines fly direct from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport, which days they fly and book direct flights.

Direct departures

San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl

Monday

Air Canada, United Airlines

Air Canada, United Airlines

Tuesday

Air Canada, Frontier, United Airlines

Air Canada, Frontier, +1 more

Wednesday

Air Canada, United Airlines

Air Canada, United Airlines

Thursday

Air Canada, Frontier, United Airlines

Air Canada, Frontier, +1 more

Friday

Air Canada, United Airlines

Air Canada, United Airlines

Saturday

Air Canada, Frontier, United Airlines

Air Canada, Frontier, +1 more

Sunday

Air Canada, Frontier, United Airlines

Air Canada, Frontier, +1 more

See more direct flights

Direct returns

Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl

Monday

Air Canada, United Airlines

Air Canada, United Airlines

Tuesday

Air Canada, Frontier, United Airlines

Air Canada, Frontier, +1 more

Wednesday

Air Canada, United Airlines

Air Canada, United Airlines

Thursday

Air Canada, Frontier, United Airlines

Air Canada, Frontier, +1 more

Friday

Air Canada, United Airlines

Air Canada, United Airlines

Saturday

Air Canada, Brussels Airlines, Frontier, +1 more

Air Canada, Brussels Airlines, +2 more

Sunday

Air Canada, Brussels Airlines, Frontier, +1 more

Air Canada, Brussels Airlines, +2 more

See more direct flights

Reviews of the top 3 airlines serving from San Juan to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from San Juan to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Juan to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7980 reviews
7.9Comfort
8.2Boarding
7.3Food
8.5Crew
7.9Entertainment
Airline reviews

Check in process was terrible. Lady at counter didn’t know what she was doing

4.0 OkayAnonymous, Jul 2025ICN - SEA
Read more Delta reviews

Check in process was terrible. Lady at counter didn’t know what she was doing

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

The crew was amazing; Von, Vera and Guadalupe were very friendly and attentive throughout the entire flight. They were friendly and welcoming to everyone. A solid and dedicated team for sure!

Terrible. I was bumped off of my original flight and spent the next six days fighting to get back on it. I lost hours of my vacation trying to get this situation corrected.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

United airlines, mediocre at best. No issues , nothing great . Worked for me

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

Very nice and clean plane. Transit time between flights was tight though

Mostly the experience was good except for the flight changes made by UA which meant longer layover in DC

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Change cabin crew assisting business class. Not taking care, ignoring requests and calls. Never had such an experience in business class.

Boarding in Orlando was not good. Giant mob at the gate, should have been lines.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

baggage clamed had to wait over a hour and half for all people on my flight it was terrible

The ticketing agents were rude but then we had a great gate agent very nice we had to ride a buss out to where the plane was parked but it was in some back corner of the airport when we got to the plane the captain who was great btw was cleaning the plane because the same rude ticketing agent told them they we not contracted to vacuum the plane. The ride to las Vegas was fine We had a connecting flight to Dallas. The flight was fine but when we arrived in Dallas everyone who flew on any frontier airlines the picked up bags from baggage claim D15 had to wait over a hour for their bags to start we arrived at 11:30pm ish to the gate we didn't leave the baggage clamed till 12:50 am very not happy and i used to fly frontier 4 times a week for work in Denver i will not be using them again

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

My flight was canceled I was promised a reginf still not received.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

Both legs of the flight were changed. The day of the flight and length of the trip.

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Everything you need to know for your flight from San Juan to Dulles Intl

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.