$102 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 4/19. 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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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

Wed, Apr 29 - Sun, May 3
Frontier Logo
3:21 am - 11:35 am
SJU
-
IAD
8h 14m
1 stop
Frontier Logo
6:20 am - 2:08 pm
IAD
-
SJU
7h 48m
1 stop
$192Frontier
Thu, Apr 9 - Mon, Apr 13
Frontier Logo
6:07 pm - 2:02 pm
SJU
-
IAD
19h 55m
1 stop
Frontier Logo
4:25 pm - 12:10 am
IAD
-
SJU
7h 45m
1 stop
$198Frontier
Thu, Apr 23 - Mon, Apr 27
Frontier Logo
3:03 pm - 12:36 am
SJU
-
IAD
9h 33m
1 stop
Frontier Logo
8:17 am - 2:01 am
IAD
-
SJU
17h 44m
1 stop
$213Frontier
Thu, Mar 26 - Wed, Apr 8
Frontier Logo
5:30 am - 1:44 pm
SJU
-
IAD
8h 14m
1 stop
Frontier Logo
3:15 pm - 12:52 am
IAD
-
SJU
9h 37m
1 stop
$216Frontier
Wed, Apr 15 - Mon, Apr 20
Frontier Logo
6:30 am - 11:40 am
SJU
-
IAD
29h 10m
1 stop
Frontier Logo
6:00 am - 2:13 pm
IAD
-
SJU
8h 13m
1 stop
$217Frontier
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
3:22 pm - 12:31 am
SJU
-
IAD
9h 09m
1 stop
Multiple Airlines Logo
7:00 am - 7:50 pm
IAD
-
SJU
12h 50m
1 stop
$227Multiple Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
10:30 am - 9:05 pm
CPX
-
IAD
11h 35m
2 stops
United Airlines Logo
6:00 am - 4:13 pm
IAD
-
CPX
10h 13m
2 stops
$2,364United Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
10:30 am - 8:47 pm
CPX
-
IAD
35h 17m
3 stops
United Airlines Logo
6:15 am - 4:13 pm
IAD
-
CPX
9h 58m
2 stops
$2,604United Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
10:30 am - 9:05 pm
CPX
-
IAD
11h 35m
2 stops
United Airlines Logo
8:27 am - 4:13 pm
IAD
-
CPX
7h 46m
1 stop
$2,680United Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
10:30 am - 12:28 am
CPX
-
IAD
38h 58m
3 stops
United Airlines Logo
6:15 am - 4:13 pm
IAD
-
CPX
9h 58m
2 stops
$2,920United Airlines
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 Ponce, with flights as low as $102 one-way and $192 round-trip. Flights from San Juan are the most searched and start at $192 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 January, where tickets cost $114 on average for one-way flights. On the other hand, the most expensive months are September and April, where the average cost of tickets from Puerto Rico is $432 and $404 respectively. For return trips, the best month to travel is January with an average price of $114.

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 $161 one-way - $258 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 3 days before departure.

Good to know

Low seasonSeptember
Cheapest flight$102
Best time to beat the crowds but there is an average 42% increase in price.
Most popular time to fly with an average 20% increase in price.
Flight from Ponce 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 Ponce, with flights as low as $102 one-way and $192 round-trip. Flights from San Juan are the most searched and start at $192 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 $341. The cheapest price found on KAYAK in the last 2 weeks cost $106 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 $322. On the other hand, the most expensive day to fly is Monday, where prices are $664 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 morning, when flights cost $449 on average. The most expensive time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $716.

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 $355
  • 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 airlines flying 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.
7.4
United AirlinesOverall score based on 9336 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
8.1Crew
6.6Food
Airline reviews

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

6.0 GoodJames, Feb 2026
HND - IAD
Read more United Airlines reviews

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

Fine not above and beyond as I had a connection that was delayed due to maintenance

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

Great other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

The seats were comfortable and we had leg room. Great entertainment.

The flight crew where really good. Better then the crew from BNE to SFO

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

Frontier line changes my flight schedule with out my authorization. They never ask me and with out my concern they cut off 4 hours of my vacation they force my to leave 4 hours early from Puerto Rico.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

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
Oxon Hill
Martinsburg
Owings Mills
Charles Town
Glen Burnie
Greenbelt
Ellicott City
Edgewood
Colonial Beach
Pikesville
Lutherville Timonium
Camp Springs
Hunt Valley
Westminster

Everything you need to know for your flight to Dulles Intl

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