$146 Find Cheap Flights from Puerto Rico to Washington Dulles Airport - Compare and Save

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Cheap Flights from Puerto Rico to Dulles Intl

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

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

Tue, Oct 27 - Tue, Nov 3
Frontier Logo
8:45 am - 8:11 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
11h 26m1 stop Fort Lauderdale
Frontier Logo
11:16 am - 12:59 amIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
12h 43m2 stops Orlando Atlanta Hartsfield-Jackson
$287Frontier
Tue, Oct 27 - Tue, Nov 3
Frontier Logo
8:45 am - 11:43 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
14h 58m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
Frontier Logo
11:16 am - 12:59 amIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
12h 43m2 stops Orlando Atlanta Hartsfield-Jackson
$287Frontier
Sun, Sep 13 - Mon, Sep 21
Frontier Logo
2:57 am - 10:17 amSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
7h 20m1 stop Orlando
Frontier Logo
7:50 am - 3:19 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
7h 29m1 stop Atlanta Hartsfield-Jackson
$288Frontier
Mon, Sep 21 - Sun, Sep 27
Frontier Logo
3:55 pm - 5:18 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
25h 23m2 stops Orlando Atlanta Hartsfield-Jackson
Frontier Logo
7:50 am - 4:06 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
8h 16m1 stop Atlanta Hartsfield-Jackson
$288Frontier
Thu, Oct 1 - Tue, Oct 6
Multiple Airlines Logo
2:57 am - 5:56 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
14h 59m2 stops Orlando Blountville Tri Cities TN/VA
Multiple Airlines Logo
11:12 am - 5:43 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
6h 31m1 stop Orlando
$296Multiple Airlines
Fri, Dec 25 - Wed, Jan 6
United Airlines Logo
8:05 am - 11:09 amSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
4h 04mnonstop
United Airlines Logo
5:32 pm - 10:22 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
3h 50mnonstop
$297United Airlines
Fri, Oct 9 - Fri, Oct 16
Multiple Airlines Logo
7:00 am - 8:11 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
13h 11m1 stop Fort Lauderdale
Multiple Airlines Logo
6:36 pm - 9:18 amIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
14h 42m2 stops Blountville Tri Cities TN/VA Orlando
$298Multiple Airlines
Wed, Dec 23 - Sun, Jan 3
United Airlines Logo
4:55 pm - 12:38 amSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
8h 43m1 stop Chicago O'Hare Intl
United Airlines Logo
5:29 pm - 10:22 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
3h 53mnonstop
$302United Airlines
Fri, Dec 18 - Sun, Jan 3
United Airlines Logo
8:25 am - 4:03 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
8h 38m1 stop Chicago O'Hare Intl
United Airlines Logo
5:29 pm - 10:22 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
3h 53mnonstop
$302United Airlines
Tue, Oct 20 - Sun, Oct 25
American Airlines Logo
6:00 am - 11:23 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
17h 23m1 stop Dallas/Fort Worth
American Airlines Logo
5:01 am - 11:20 amIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
6h 19m1 stop Charlotte Douglas
$304American 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 day to fly to Washington, D.C.?

Based on KAYAK data, the cheapest day to fly to Washington, D.C. is Thursday where round-trip tickets can be as cheap as $382. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $725 on average.

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

The cheapest month for flights to Washington, D.C. Dulles Intl Airport is January, where tickets cost $114 on average for return flights. On the other hand, the most expensive months are June and March, where the average cost of tickets from Puerto Rico is $539 and $491 respectively. For one-way flights, the best month to travel is February with an average price of $122.

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 evening, when round-trip flights cost $438 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.

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 $506 round-trip.

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

To get a below average price, you should book around 3 weeks before departure, which saves you about 60% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low season

September

Cheapest flight

$146
Best time to beat the crowds but there is an average 5% increase 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 $508. The cheapest price found on KAYAK in the last 2 weeks cost $143 and departed from San Juan Luis Munoz Marin Intl Airport.

  • 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.

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 $382
  • 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

 
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 10121 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
6.7Food
Airline reviews

Bad check in experience. Dirty ancient aircraft. Truly awful food and this in Business/ First class.

2.0 MediocreDonald, Aug 2026
Read more United Airlines reviews

Bad check in experience. Dirty ancient aircraft. Truly awful food and this in Business/ First class.

I truely appreciate all services. I was highly impressed and will not hesitate to recommend United Airlines to friends and family. The AVML was perfect.

Very kind Lufthansa agent somehow gave us all no charge extra business class seats and helped us get home rested and happy.

The lounge was not accessible because it was located before the passport control, and backtracking was impossible.

The flight to America was freezing. The overnight flight back to the UK was boiling hot and the cabin stank of toilet or occasionally perfume, even though I was several rows back from either bathroom. Food was tiny portions. Two small pieces of tough and dry beef in random gravy with pretend mashed potato raking up most of it. Very little veg. Salad was ok. Wooden cutlery broke within minutes of using. Lots of old films for entertainment. Some new ones. Generally a bit rubbish.

Entertainment center did not work and no electric available at seat for 11 hour flight. Didn’t have access to overhead light or call button. Food was tasteless and had a high salt (27 %) of recommended daily salt intake

What would be infinitely better if for Kayak to not offer this flight as if it was completely different airlines rather than United and then filtering me through some creepy discount site.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

The flight was canceled. I couldn't get on another flight. Meal voucher wouldn't work. The whole experience was a clusterfuck.

IT WAS A LONG TIME SINCE THE LAST TIME I TRAVELED. I THOUGHT I WAS TO BE LOST BUT EVERYONE WAS PRETTY NICE WITH ME AND MADE MY EXPERIENCE NICE. THANKS

Crew was kind of grumpy and there was no beverage service at all. Sodas were $4. Disappointing.

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

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.

Good- no snacks on a 4+ hour flight is painful but more painful was the lack of WiFi.

The worst. We never made our connection and they did absolutely nothing to help us at the airport.

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

Flight was changed (according to Frontier, by Kayak) without my notification. And all flights were delayed by at least an hour and a half. Uncomfortable plane. Bad service. Will never fly Frontier again.

Was left with many other passengers in SJU by frontier airlines due to delay caused by frontier. Worst experience ever and worst airline ever.

It was horrible. My plane was delayed until the next day resulting in me losing a day of work. It’s absolutely unacceptable and I won’t be flying with you any more and I will strongly caution others to avoid your airline as well.

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

Everything you need to know for your flight to Dulles Intl

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