$166 Find Cheap Flights from Costa Rica to Washington Dulles Airport - Compare and Save

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 11/23. 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.
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Cheap Flights from Costa Rica to Dulles Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Costa Rica 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 Costa Rica to Dulles Intl

Sat, Oct 10 - Sat, Oct 17
American Airlines Logo
2:44 pm - 2:18 pmLIR  Liberia-IAD Washington, D.C. Dulles Intl
21h 34m2 stops Miami Dallas/Fort Worth
American Airlines Logo
7:13 pm - 1:18 pmIAD  Washington, D.C. Dulles Intl-LIR Liberia
20h 05m2 stops Dallas/Fort Worth Miami
$273American Airlines
Thu, Oct 8 - Mon, Oct 26
Copa Airlines Logo
5:55 pm - 4:20 amSJO  San José Juan Santamaria Intl-IAD Washington, D.C. Dulles Intl
8h 25m1 stop Panama City Tocumen Intl
Copa Airlines Logo
4:34 pm - 7:04 amIAD  Washington, D.C. Dulles Intl-SJO San José Juan Santamaria Intl
16h 30m1 stop Panama City Tocumen Intl
$331Copa Airlines
Fri, Sep 25 - Sat, Oct 3
Copa Airlines Logo
10:03 am - 12:32 amSJO  San José Juan Santamaria Intl-IAD Washington, D.C. Dulles Intl
12h 29m1 stop Panama City Tocumen Intl
Copa Airlines Logo
2:25 am - 9:04 amIAD  Washington, D.C. Dulles Intl-SJO San José Juan Santamaria Intl
8h 39m1 stop Panama City Tocumen Intl
$337Copa Airlines
Sat, Oct 10 - Sat, Oct 17
American Airlines Logo
12:32 pm - 9:16 pmLIR  Liberia-IAD Washington, D.C. Dulles Intl
30h 44m1 stop Charlotte Douglas
American Airlines Logo
7:13 pm - 1:18 pmIAD  Washington, D.C. Dulles Intl-LIR Liberia
20h 05m2 stops Dallas/Fort Worth Miami
$353American Airlines
Wed, Sep 16 - Tue, Oct 13
Copa Airlines Logo
6:17 pm - 3:04 pmSJO  San José Juan Santamaria Intl-IAD Washington, D.C. Dulles Intl
18h 47m1 stop Panama City Tocumen Intl
Copa Airlines Logo
2:25 am - 9:04 amIAD  Washington, D.C. Dulles Intl-SJO San José Juan Santamaria Intl
8h 39m1 stop Panama City Tocumen Intl
$353Copa Airlines
Fri, Jan 22 - Mon, Jan 25
United Airlines Logo
12:50 pm - 5:08 amLIR  Liberia-IAD Washington, D.C. Dulles Intl
15h 18m1 stop Denver Intl
United Airlines Logo
6:30 am - 1:10 pmIAD  Washington, D.C. Dulles Intl-LIR Liberia
7h 40m1 stop Houston George Bush Intcntl
$355United Airlines
Sun, Dec 20 - Wed, Dec 30
United Airlines Logo
2:15 pm - 7:59 pmSJO  San José Juan Santamaria Intl-IAD Washington, D.C. Dulles Intl
4h 44mnonstop
United Airlines Logo
6:00 am - 8:39 pmIAD  Washington, D.C. Dulles Intl-SJO San José Juan Santamaria Intl
15h 39m1 stop Houston George Bush Intcntl
$361United Airlines
Tue, Sep 22 - Mon, Oct 5
Avianca Logo
5:25 pm - 2:15 amSJO  San José Juan Santamaria Intl-IAD Washington, D.C. Dulles Intl
6h 50m1 stop Guatemala City La Aurora
Avianca Logo
3:40 am - 8:30 amIAD  Washington, D.C. Dulles Intl-SJO San José Juan Santamaria Intl
6h 50m1 stop Guatemala City La Aurora
$362Avianca
Tue, Oct 13 - Mon, Oct 19
Avianca Logo
5:25 pm - 2:15 amSJO  San José Juan Santamaria Intl-IAD Washington, D.C. Dulles Intl
6h 50m1 stop Guatemala City La Aurora
Avianca Logo
3:40 am - 8:30 amIAD  Washington, D.C. Dulles Intl-SJO San José Juan Santamaria Intl
6h 50m1 stop Guatemala City La Aurora
$362Avianca
Thu, Dec 3 - Tue, Dec 15
Delta Logo
7:00 am - 12:39 amSJO  San José Juan Santamaria Intl-IAD Washington, D.C. Dulles Intl
16h 39m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 1:05 pmIAD  Washington, D.C. Dulles Intl-SJO San José Juan Santamaria Intl
8h 05m1 stop Atlanta Hartsfield-Jackson
$366Delta
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 5 days.

In the last 5 days, the cheapest flight deal to Washington Dulles Airport was found on the route from Liberia, at $273 return. The most popular connection is from San José to Washington Dulles Airport and KAYAK users have found round-trip deals for as low as $331 in the last 5 days.

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

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

Based on KAYAK data, the cheapest day to fly to Washington, D.C. is Tuesday where round-trip tickets can be as cheap as $235. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $648 on average.

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 round-trip 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 October, where tickets cost $254 on average for return flights. On the other hand, the most expensive months are July and April, where the average cost of tickets from Costa Rica is $415 and $382 respectively. For one-way flights, the best month to travel is October with an average price of $165.

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

The average price for all round-trip flights to Washington, D.C. Dulles Intl Airport depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the evening, when round-trip flights cost $263 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 $360.

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 José $360 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, which saves you about 6% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low season

August

Cheapest flight

$166
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from Liberia to Washington, D.C.

FAQs - booking Washington Dulles Airport flights

  • What is the cheapest flight to Washington Dulles Airport?

    In the last 5 days, the cheapest flight deal to Washington Dulles Airport was found on the route from Liberia, at $273 return. The most popular connection is from San José to Washington Dulles Airport and KAYAK users have found round-trip deals for as low as $331 in the last 5 days.

  • 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 $676. The cheapest price found on KAYAK in the last 2 weeks cost $181 and departed from Liberia 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.

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

    Each week there are around 7,673 direct flights from within Costa Rica to Washington, D.C. Dulles Intl Airport. The most common day for departures is Sunday, with 19% 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 Liberia $199, from San José $430
  • 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 Costa Rica 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 Costa Rica 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.
7.6
Copa AirlinesOverall score based on 1557 reviews
7.8Boarding
7.4Comfort
6.8Entertainment
8.1Crew
6.9Food
Airline reviews

Flight Crew Review The crew was absolutely amazing from start to finish! They were friendly, professional, attentive, and genuinely made the flight feel comfortable and enjoyable. Every interaction was pleasant, and they went above and beyond to make sure passengers were taken care of. You could really tell that they cared about providing great service. I truly appreciate their kindness and professionalism and would be happy to fly with this crew again!

10.0 ExcellentAnonymous, Aug 2026
Read more Copa Airlines reviews

Flight Crew Review The crew was absolutely amazing from start to finish! They were friendly, professional, attentive, and genuinely made the flight feel comfortable and enjoyable. Every interaction was pleasant, and they went above and beyond to make sure passengers were taken care of. You could really tell that they cared about providing great service. I truly appreciate their kindness and professionalism and would be happy to fly with this crew again!

stood in line to check in luggage for nearly an hour. very poor service and not excusable

Same as the previous flight as far as comfort and food. Entertainment didn’t have a watchable screen so everything would need to be watched on your own device in which they didn’t have a charging port that accommodated my iPhone. Seats were very uncomfortable. Staff was very friendly.

Some of the Air hostesses are not that friendly. Need improvement

horrible service, food was an embarrassment, no charging for cellphones, stay away

Great experience with a crew always thinking in the passenger

We paid extra with copa for seats near one another The plane was changed and we lost our seats We were all Separated. We have not received a refund for our seats despite emailing and calling.

We were in transit from Lima (flight at 1.10am) and we were in stand by in our flight from Panama to Washington. We wait from 4.30 am to 18.30pm in the Airport. The company give us 2 x 15 dollars for eat during the day and a personnal travel voucher of 400 dollars each. Do they buy food one time something in the Airport ??? And one of us live in France so the voucher is not usable. More than 24 hours travel !! And our place were near the toilets, with 8 children around us. The boy behind my seat stamped his feet on my back all the flight. Really Wonder full ! So we are totally unhappy with our travel. Thanks Copa Airlines....

I loved my experience. Very safe, Very informative and very friendly.

Copa crew is almost never great in terms of service.

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 terribly delayed with zero support from united airlines. I reached at 1 am in the night. They did not provide any option to change the flights.

Flight was delayed 14 hours due to DC air show and weather. Missed connection to MUC.

Boarding was terrible. My wife uses a wheel chair and she was in an incredibly hot closed metal cargo box for close to 20 minutes before getting on board

Better seats, allow us to upgrade, terrible website, poor telephone service, better equipment

Horrible experience with Avianca, they delayed their flight and when we arrived to NYC, AVIANCA took 1 hr y 30 mins to park the airplane and all passenger get off the plane, it made me lost all my trains to get back home and I came back to my place at 3 am instead of 12 am. On the top of that their plane seat are so uncomfortable and is not enough space and killed my legs and knees, Avianca used to be good when it was a Colombian company, now after Brasilian company bought them, their service quality is bad and their flights are delayed and oversold.

I handed in my suitcase in perfect condition at SAL Airport. And in MIA Airport I received it with one corner broken and the wheels bent.

I like the crew members they're very friendly. Clean plane. The flight was on time. I dont like the comfort my car seat its better that the plane seats. They charge for everything. This airline was very good. Now it's a low cost airline

6 hour flight and have to pay for everything 100 dollars to add a carry-on bag is insane

The check in is the only positive thing in Avianca. The seat is the most uncomfortable I have traveled, the distance is minimal.

Not what it used to be. The sale of food makes them look greedy!

Avianca is not what it used to be. So disappointing

Overpriced checked bag price of $120 and they charge you for carryon if the size is not minimal of $120.

Felt very cramped in the back of plane. There was an hour delay for take off sitting on the runway, but we did arrive on time. They charge $120 for carry on bag and backpack at the airport its ridiculous.

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
Camp Springs
Ellicott City
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.