$64 Find Cheap Flights from Puerto Rico 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 to Dulles Intl departing on 5/22. 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

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 for flights 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 for flights to Washington, D.C., as well as popular online travel agencies
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Cheap Flight Deals from Puerto Rico to Dulles Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Puerto Rico 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.

Recent round-trip flight deals from Puerto Rico to Dulles Intl

KAYAK's recommended round-trip deals from the most popular airlines that fly from Puerto Rico to Dulles Intl.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
7:20 am - 11:15 amSJU-IAD
3h 55mnonstop
Frontier Logo
12:10 pm - 4:02 pmIAD-SJU
3h 52mnonstop
$128Frontier
Find Deal
Thu, May 22 - Sun, May 25
Frontier Logo
7:20 am - 11:15 amSJU-IAD
3h 55mnonstop
Frontier Logo
12:28 pm - 4:18 pmIAD-SJU
3h 50mnonstop
$148Frontier
Find Deal
Thu, May 22 - Sun, Jun 1
Delta Logo
7:30 am - 6:47 pmSJU-IAD
11h 17m1 stop
Delta Logo
12:20 pm - 11:42 pmIAD-SJU
11h 22m1 stop
$225Delta
Find Deal
Thu, May 29 - Sat, May 31
United Airlines Logo
1:05 am - 7:19 amSJU-IAD
6h 14m1 stop
United Airlines Logo
8:40 am - 12:34 pmIAD-SJU
3h 54mnonstop
$281United Airlines
Find Deal
Wed, May 21 - Sun, Jun 1
Delta Logo
7:30 am - 6:47 pmSJU-IAD
11h 17m1 stop
Delta Logo
12:20 pm - 11:42 pmIAD-SJU
11h 22m1 stop
$285Delta
Find Deal
Thu, May 29 - Mon, Jun 2
American Airlines Logo
7:15 am - 4:56 pmSJU-IAD
9h 41m1 stop
American Airlines Logo
5:02 am - 8:33 pmIAD-SJU
15h 31m1 stop
$315American Airlines
Find Deal
Thu, May 22 - Mon, May 26
American Airlines Logo
7:15 am - 4:56 pmSJU-IAD
9h 41m1 stop
American Airlines Logo
5:02 am - 11:10 amIAD-SJU
6h 08m1 stop
$324American Airlines
Find Deal
Thu, May 22 - Mon, May 26
United Airlines Logo
7:25 am - 11:24 amSJU-IAD
3h 59mnonstop
United Airlines Logo
12:50 pm - 11:54 pmIAD-SJU
11h 04m2 stops
$325United Airlines
Find Deal
Thu, May 22 - Sun, May 25
 Logo
2:50 pm - 11:47 amSJU-IAD
20h 57m1 stop
 Logo
12:28 pm - 4:18 pmIAD-SJU
3h 50mnonstop
Sat, May 24 - Sun, Jun 1
 Logo
11:11 am - 8:37 pmSJU-IAD
9h 26m1 stop
 Logo
1:29 pm - 7:56 pmIAD-SJU
30h 27m2 stops
Fri, Jun 13 - Mon, Jun 23
Useful Info

KAYAK's insights & trends for flights to Dulles Intl

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

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights 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 to Washington, D.C. Dulles Intl Airport is March, where tickets cost $294 on average for return flights. On the other hand, the most expensive months are April and August, where the average cost of tickets from Puerto Rico is $547 and $490 respectively. For one-way flights, the best month to travel is March with an average price of $294.

What is a good deal for flights to Washington, D.C. Dulles Intl Airport?

If you’re looking for cheap airfare to Washington, D.C. Dulles Intl Airport, 25% of our users found tickets to Washington, D.C. Dulles Intl Airport for the following prices or less: From San Juan Luis Munoz Marin Intl Airport $315 round-trip.

How far in advance should I book a flight 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 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, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.


Good to know

Low seasonSeptember
High seasonDecember
Cheapest flight$64
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from San Juan to Washington Dulles Airport

FAQs - booking Washington Dulles Airport flights

  • How far is Washington, D.C. Dulles Intl Airport from central Washington, D.C.?

    Central Washington, D.C. is 22 miles away from Washington, D.C. Dulles Intl Airport.

  • How much is a flight to Washington, D.C.?

    On average, a flight to Washington, D.C. costs $391. The cheapest price found on KAYAK in the last 2 weeks cost $130 and departed from San Juan Luis Munoz Marin Intl Airport.

  • What is the cheapest day to fly to Washington, D.C.?

    Based on KAYAK data, the cheapest day to fly to Washington, D.C. is Friday where round-trip tickets can be as cheap as $474. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $709 on average.

  • How does KAYAK find such low prices on flights 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 to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket 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 is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Washington, D.C. Dulles Intl Airport?

    The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the afternoon, when round-trip flights cost $369 on average. The most expensive time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the evening, which is peak travel time and where the average cost of a ticket is $550.

  • How many direct flights to Washington, D.C. Dulles Intl Airport are there each week?

    Each week there are around 2,941 direct flights from within Puerto Rico to Washington, D.C. Dulles Intl Airport. The most common day for departures is Thursday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Washington Dulles Airport

  • Looking for cheap airfare to Washington Dulles Airport? 25% of our users found round-trip tickets to Washington Dulles Airport for the following prices or less: From San Juan Luis Munoz Marin Intl $1,593
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington Dulles Airport flight deals.

Top 3 airlines serving from Puerto Rico to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Puerto Rico to Washington, D.C.. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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 7934 reviews
7.3Food
7.9Entertainment
8.5Crew
7.9Comfort
8.2Boarding
Airline reviews

Fine except the person next to me took up her seat had raised the arm divide so she spilled into my seat. because of her size. Fortunately no one was in the seat on my right so I could use part of it.

10.0 ExcellentAnonymous, Apr 2025AMS - ATL
Read more Delta reviews

Fine except the person next to me took up her seat had raised the arm divide so she spilled into my seat. because of her size. Fortunately no one was in the seat on my right so I could use part of it.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Delta is a cut above the others in customer service.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

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.

United left one of our bags back in SFO but that’s not my real complaint. The complaint is how it all went down. So we checked in the day before online and were told we could use the quick drop for luggage. So the next day I used baggage quick drop curbside at SFO. The agent mistakenly didn't tag my bag as he put my bag on the conveyor belt untagged. We immediately alerted him he had not tagged the bag. I walked with him to the baggage service office to find my bag and tag it. We waited outside the office for 10 mins. He came out and said everything was ok and the bag was going to be tagged and on my flight. We received a text that one of our bags was on the flight but the other was not. I alerted my first class flight attendant immediately upon boarding the flight. She was helpful and said she’d get it sorted out right away. She called over the gate agent. The gate agent used my bag number and looked over information on her device. She said my bag was on the flight. The flight attendant was standing with her, looking at the device, and also said “yep it’s on the flight”. During the flight the flight attendant made reference to how reassuring it must feel knowing the bag was on the flight. Upon arriving to IAD we received a text that my bag was not on my flight. The text said my bag would arrive to my final destination LIS 24 hrs late. I understand that mistakes happen. I was totally ok with my bag mistakenly not getting tagged at the quick drop. I was fine with walking down to baggage services to tag my bag. But, what I am not ok with is that the United staff said they fixed the mistake two different times, assuring me twice that my bag would be/was on the plane…and it wasn’t. I expected better attention by the employees, for them to do what they said they were going to do. We also spent extra money to upgrade our seats to first class, including the entire return leg from Lisbon to San Francisco because we wanted a smoother and more relaxing travel experience. Our money was not well spent. We will not be using United for travel going forward.

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

Horrifying! And I am almost 2 million miles with United. Late by 3 1/2 hours. Worst: after two hours on the plane waiting, they decided that one of the tires had been damaged and then decided to change it. Another hour and a half to change the tire!!!!! NO EXCUSE FOR THIS. The crew didn't even offer a glass of water until we had been on the plane for FIVE hours. This is the worst airline in the world. I'm simply stuck because they fly on the only routes I need.

Gate got changed about 4 times. Very confusing and very crowded. If you don’t have wifi to help get updates, you can be in deep trouble.

Attendants zipped through cabin so fast hardly anyone got the water they told us we could have in the short flight. Nothing else was offered.

Sucks ! All three flights I was on this trip were delayed.

The flight attendants were unhelpful. It was a packed flight, and usually a flight attendant would help find a spot in the bin for your carry on or shift things around. Neither made any effort to do so. Also, I had to then check my bag. I was told it would be on the carousel in YYZ, but it came up on the jetway. So lucky I saw others standing around for their bags. I would have walked straight past this and on to the carousel. They could have at least told me that they had given me wrong information. Very unsatisfactory.

The reps working at the airport counter were dumber than a second coat of paint.

My costume jewelry was stolen out of my bag. Got to airport and my bag weighed 45 pounds- 5 pounds over cost me $100 Long lines in tier one. No entertainment No WiFi no free drinks or snacks

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

The seats were hard molded plastic covered in plastic vinyl. And the scam to charge people extra to sit together. Don’t they know we can just ask someone to trade seats. And watching the staff separate young children from parents… super classy. We had to guilt them into offering up our seats. This companies policies suck. Don’t give them your money.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

I’ve never traveled on Frontier before. If you want basic, no frills, friendly service at great prices then give them a fly!

I guess you get what you pay for. The seats are very uncomfortable and very little space. The snacks were pricey.

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

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