$84 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 11/13. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$138
Overall average: $428
Frontier
Sat 12/20Sun 1/4
SJU - IAD • Non-stop
Cheapest one-way
$84
Frontier
Thu 11/13
BQN - IAD • 1 stop
Top airlines
United Airlines
Most flights • 14 per week
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
BQN-IAD
Cheapest
SJU-IAD
Most popular
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 39% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Sat, Dec 20 - Sun, Jan 4
Frontier Logo
4:18 pm - 7:31 pmSJU-IAD
4h 13mnonstop
Frontier Logo
8:26 pm - 1:20 amIAD-SJU
3h 54mnonstop
$138Frontier
Find Deal
Fri, Jan 16 - Mon, Jan 26
Frontier Logo
3:39 pm - 6:47 pmSJU-IAD
4h 08mnonstop
Frontier Logo
3:42 pm - 8:36 pmIAD-SJU
3h 54mnonstop
$140Frontier
Find Deal
Fri, Dec 19 - Sun, Jan 4
Frontier Logo
3:54 am - 10:09 amSJU-IAD
7h 15m1 stop
Frontier Logo
8:26 pm - 1:20 amIAD-SJU
3h 54mnonstop
$143Frontier
Find Deal
Tue, Dec 23 - Sun, Jan 4
Frontier Logo
4:07 pm - 7:20 pmSJU-IAD
4h 13mnonstop
Frontier Logo
8:26 pm - 1:20 amIAD-SJU
3h 54mnonstop
$158Frontier
Find Deal
Fri, Jan 16 - Mon, Jan 19
Delta Logo
2:15 pm - 8:37 pmSJU-IAD
7h 22m1 stop
Delta Logo
7:15 am - 2:30 pmIAD-SJU
6h 15m1 stop
$175Delta
Find Deal
Thu, Nov 13 - Mon, Nov 17
Delta Logo
3:20 pm - 11:03 pmSJU-IAD
8h 43m1 stop
Delta Logo
3:35 pm - 11:13 pmIAD-SJU
6h 38m1 stop
$225Delta
Find Deal
Thu, Dec 4 - Mon, Dec 8
American Airlines Logo
2:05 pm - 12:01 amSJU-IAD
10h 56m1 stop
American Airlines Logo
2:16 pm - 10:09 pmIAD-SJU
6h 53m1 stop
$235American Airlines
Find Deal
Wed, Feb 18 - Mon, Feb 23
United Airlines Logo
1:09 am - 4:03 pmBQN-IAD
15h 54m2 stops
United Airlines Logo
8:20 am - 11:57 pmIAD-BQN
14h 37m2 stops
$389United Airlines
Find Deal
Wed, Feb 18 - Mon, Feb 23
United Airlines Logo
1:09 am - 7:19 amBQN-IAD
7h 10m1 stop
United Airlines Logo
8:20 am - 11:57 pmIAD-BQN
14h 37m2 stops
$399United Airlines
Find Deal
Thu, Nov 27 - Sun, Nov 30
Multiple Airlines Logo
10:55 am - 7:50 amPSE-IAD
21h 55m1 stop
Multiple Airlines Logo
5:40 pm - 10:41 amIAD-PSE
16h 01m2 stops
$648Multiple Airlines
Find Deal
Booking Insights

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 flight to Washington Dulles Airport?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

If traveling to Washington Dulles Airport, the cheapest city to fly from in the last 3 days was Aguadilla, with flights as low as $84 one-way and $138 round-trip. Flights from San Juan are the most searched and start at $138 for a return trip.

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 July, where tickets cost $223 on average for one-way flights. On the other hand, the most expensive months are April and September, where the average cost of tickets from Puerto Rico is $545 and $432 respectively. For return trips, the best month to travel is July with an average price of $223.

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 $155 one-way - $277 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 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 29 days before departure.

Good to know

Low seasonMarch
Cheapest flight$84
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Aguadilla to Washington Dulles Airport

FAQs - booking Washington Dulles Airport flights

  • What is the cheapest flight to Washington Dulles Airport?

    If traveling to Washington Dulles Airport, the cheapest city to fly from in the last 3 days was Aguadilla, with flights as low as $84 one-way and $138 round-trip. Flights from San Juan are the most searched and start at $138 for a return trip.

  • 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 $338. The cheapest price found on KAYAK in the last 2 weeks cost $77 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 Thursday where tickets can be as cheap as $338. On the other hand, the most expensive day to fly is Monday, where prices are $711 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 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 $503.

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 $298
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington Dulles Airport flight deals.

Reviews of the 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.
7.9
DeltaOverall score based on 7993 reviews
8.2Boarding
8.5Crew
7.3Food
7.9Comfort
7.9Entertainment
Airline reviews

DELTA does a terrific job making sure you are well taken care of during the flight, gives you assurance before the flight through numerous email notifications about your upcoming flight & lastly good follow up after the flight making sure your needs were mat. It has been, is & will continue to be my carrier of choice in all my future travels. Good Job DELTA

10.0 ExcellentAnonymous, Oct 2025CDG - SEA
Read more Delta reviews

DELTA does a terrific job making sure you are well taken care of during the flight, gives you assurance before the flight through numerous email notifications about your upcoming flight & lastly good follow up after the flight making sure your needs were mat. It has been, is & will continue to be my carrier of choice in all my future travels. Good Job DELTA

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

Seats comfortable, service and food very mediocre, staff not very attentive, worse than many other our flights with Delta.

Overall good experience; however, there was one flight attendant who was rather rough compared to everyone else. Everything else was good: entertainment, food. Delta keeps on delivering! Thank you!

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Crew blocked exits to front of ship with galley carts. Also split five person family apart on international flight without fixing.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

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

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

Traveling to a place near Dulles Intl?

Book flights to Dulles Intl if you plan to visit one of these locations
Winchester
Linthicum Heights
Hanover
Springfield
Gaithersburg
Towson
Martinsburg
Owings Mills
Oxon Hill
Charles Town
Glen Burnie
Ellicott City
Greenbelt
Colonial Beach
Edgewood
Pikesville
Lutherville Timonium
Hunt Valley
Stevensville
Hyattsville

Everything you need to know for your flight to Dulles Intl

Information on the airport you'll fly into in Washington, D.C.

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