$99 Find Cheap Flights from Washington Dulles Airport to Costa Rica

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Costa Rica departing on 11/1. 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 Dulles Intl to Costa Rica

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
San José
San José1 stop$258
Liberia
Liberia1 stop$265
San José
San José1 stop$258
Liberia
Liberia1 stop$265

Book Cheap Dulles Intl to Costa Rica Plane Tickets

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

Thu, Dec 4 - Mon, Dec 8
Copa Airlines Logo
3:32 pm - 7:10 amIAD-SJO
16h 38m1 stop
Copa Airlines Logo
10:08 am - 3:22 amSJO-IAD
16h 14m1 stop
$258Copa Airlines
Find Deal
Tue, Feb 24 - Tue, Mar 3
Avianca Logo
1:30 am - 7:45 amIAD-SJO
7h 15m1 stop
Avianca Logo
4:15 pm - 12:10 amSJO-IAD
6h 55m1 stop
$259Avianca
Find Deal
Tue, Feb 17 - Tue, Feb 24
Avianca Logo
1:30 am - 7:45 amIAD-SJO
7h 15m1 stop
Avianca Logo
4:15 pm - 12:10 amSJO-IAD
6h 55m1 stop
$260Avianca
Find Deal
Mon, Sep 29 - Thu, Oct 2
United Airlines Logo
6:01 am - 12:10 pmIAD-LIR
8h 09m1 stop
United Airlines Logo
1:20 pm - 11:51 pmLIR-IAD
8h 31m1 stop
$265United Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 2
Copa Airlines Logo
2:25 am - 7:30 amIAD-SJO
7h 05m1 stop
Copa Airlines Logo
5:49 am - 11:33 pmSJO-IAD
16h 44m1 stop
$266Copa Airlines
Find Deal
Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
8:10 pm - 2:04 pmIAD-LIR
18h 54m2 stops
American Airlines Logo
2:59 pm - 12:41 pmLIR-IAD
20h 42m2 stops
$269American Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
American Airlines Logo
2:06 pm - 12:19 pmIAD-LIR
23h 13m1 stop
American Airlines Logo
3:20 pm - 4:59 pmLIR-IAD
24h 39m2 stops
$275American Airlines
Find Deal
Tue, Oct 21 - Sat, Oct 25
United Airlines Logo
6:01 am - 12:10 pmIAD-LIR
8h 09m1 stop
United Airlines Logo
4:35 pm - 7:27 amLIR-IAD
12h 52m1 stop
$278United Airlines
Find Deal
Mon, Sep 29 - Thu, Oct 2
Delta Logo
7:20 am - 12:00 pmIAD-LIR
6h 40m1 stop
Delta Logo
1:25 pm - 12:13 amLIR-IAD
8h 48m1 stop
$285Delta
Find Deal
Sun, Dec 7 - Thu, Dec 11
Delta Logo
6:00 am - 10:12 pmIAD-SJO
17h 12m1 stop
Delta Logo
7:00 am - 9:30 pmSJO-IAD
13h 30m1 stop
$306Delta
Find Deal
Booking Insights

KAYAK's insights & trends for Dulles Intl to Costa Rica flights

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

What is the cheapest Washington, D.C. Dulles Intl Airport to Costa Rica flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Costa Rica from Washington, D.C. Dulles Intl Airport found in the last 72 hours was to San José, at $225 round-trip. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to San José (SJO), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $225.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Costa Rica?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $344, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Costa Rica, 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 from Washington, D.C. Dulles Intl Airport to Costa Rica is September, when tickets cost $304 (return) on average. On the other hand, the most expensive months are December and April, when the average cost of round-trip tickets is $600 and $531 respectively.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Costa Rica?

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

If your flying dates are flexible, you should consider flying to Costa Rica on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Washington Dulles Airport to Costa Rica. For your return ticket, we recommend flying on a Friday and avoiding Sundays for the best deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Costa Rica, 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 on the flight from Washington, D.C. Dulles Intl Airport to Costa Rica, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$99
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 35% increase in price.
Flight from Washington Dulles Airport to San José

FAQs - booking Costa Rica flights

  • How do I get to Monteverde Cloud Forest Biological Preserve?

    Costa Rica is known for many nature attractions, including Monteverde Cloud Forest Reserve. If you’re traveling to this site, you should plan to fly to La Fortuna Arenal Airport (FON), which is approximately 15 miles away from the reserve, but it can also be reached by flying to LIR airport, approximately 44 miles away, or SJO airport, approximately 36 miles away.

  • How can I make my trip from Washington to Costa Rica more sustainable?

    The airline you fly makes a big difference in sustainability. For example, Avianca has introduced a fleet renewal program to improve it carbon footprint. By adding over 88 new A320 NEO aircraft to its fleet, Avianca has achieved a fuel savings of 20% and reduced its CO2 emissions compared its previous fleet.

  • How many bags can I bring when I fly from Washington to Costa Rica?

    Delta, United, American, and Avianca all allow passengers to bring one personal item and one carry-on bag each into the cabin. These airlines charge fees to check bags, and the fees may vary based on class or airline status.

  • What are some typical layovers between Washington and Costa Rica?

    When not flying direct, Avianca has layovers at La Aurora International Airport (GUA) in Guatemala and El Salvador International Airport (SAL). Flights between IAD and LIR airports may have layovers in Texas at George Bush Intercontinental Airport (IAH) in Houston, Dallas/Fort Worth International Airport Texas (DFW), or at Charlotte Douglas International Airport (CLT).

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Costa Rica?

    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 from Washington Dulles Airport to Costa Rica.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Costa Rica?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport to Costa Rica is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Costa Rica?

    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 from Washington Dulles Airport to Costa Rica 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 from Washington Dulles Airport to Costa Rica?

    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 from Washington Dulles Airport to Costa Rica 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 Costa Rica?

    The cheapest time of day to fly to Costa Rica is generally in the afternoon, when round-trip flights cost $335 on average. Morning departures are around 99% more expensive than evening flights, on average. The most expensive time of day to fly to Costa Rica is generally in the morning, which is peak travel time and where the average cost of a ticket is $774.

Top tips for finding cheap flights to Costa Rica

  • Travelers seeking flights from Washington, DC, to Costa Rica will find plenty of options from Dulles International Airport (IAD) to destinations throughout Costa Rica. First-time visitors will want to start their trips in San Jose, the capital of Costa Rica, located in the center of the country.
  • Passengers seeking the shortest flight times between Dulles International Airport (I (IAD) and Juan Santamaría International Airport (SJO), San Jose’s main airport, can find direct flights on Colombia-based airline Avianca and United Airlines. Direct flights between IAD and SJO take around five to seven hours. Flights with layovers can vary from about six to 18 hours, depending on the layover schedule, location, and direction of the flight.
  • Dulles International Airport (IAD) airport is a hub for United Airlines and also a major travel center for domestic and international flights throughout the world. SJO is a hub for Avianca Costa Rica and is the second busiest airport in Latin America.
  • Another popular destination in Costa Rica is Liberia airport, also called Daniel Oduber International Airport (LIR), located in northwestern Costa Rica. Travelers can find options of flights from IAD to LIR on Delta Air Lines, United, and American Airlines. Flights between IAD and LIR will typically each have one layover.
  • Travelers who want a relaxing experience before takeoff can take advantage of lounges at IAD airport. IAD offers United Club, Capital One Lounge, and USO Lounge, along with many other airline lounges. SJO airport offers Mastercard Black Lounge, available for Mastercard holders, Santamaria VIP Lounge, and VIP Lounge Costa Rica (Copa Club), which are available via payment to enter.

Reviews of the top 5 airlines serving from Dulles Intl to Costa Rica

 
Need help choosing which airline to fly with from Dulles Intl to Costa Rica? 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 7954 reviews
7.3Food
8.5Crew
8.2Boarding
7.9Comfort
7.9Entertainment
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Cops Airlines is fantastic! The level of care and professionalism provided by the entire crew was top rate.

Great experience with a crew always thinking in the passenger

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

Very happy with my flight. I would definitely recommend it.

Did upgrade, travel in business it was great (more room I could sleep)

Had to go through security at the gate again. Had to take off shoes and go through the whole thing again even though we have global entry. They asked us to check in items bought at duty free during our layover and since we checked our luggage at the original departure airport, they forced us to check in a small backpack. None of this ever happened with other airlines. In addition, no vegetarian food option and no snacks during a 7 hr flight. Luggage limits are unusually small. This is unacceptable. Will NEVER fly Copa again and will tell friends and family to avoid this airline.

Tell people to remain in their seats during the meal/beverage distribution. Enforce boarding by group numbers. No one was checking. Tell people to turn their electronics speakers off. Bigger cups for drinks.

Enforce the boarding process by group numbers. Tell people to stay seated during the meal/drink distribution. It took forever to get food and drinks because people would not stay out the isle and let the crew do their jobs. Everyone wanted to go to the bathroom forcing the crew to enter and leave the isle constantly so people can pass. Tell people to keep their electronics off speaker mode. No one wants to hear phone conversations and music playing.

Placed us in the last rear row of the plane so could not recline seats because of the rear wall, and also made it more of a tight space when the passenger in front reclined their seat. While understand seat assignments, every passenger should be afforded a reclining seat. The odor control scent from the restrooms was overwhelming strong. My wife and I could not deal with it, and she suffered a terrible headache as a result. I kept getting hit by the crew since I was on the ilse seat. No apologies, nothing. They made me feel like I was supposed to take the beating for a 3 hr flight.

There was no individual at the front check in when I arrived. I waited for at least 15 minutes and walked around asking security/janitors if they could help and they did not have a solution. So I had to take my checked bag through security and they threw away some of my items. I ended up making it to the gate only a few minutes before it closed due to my waiting for an agent at check in.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

Boarding, crew were excellent, food was ok and entertainment need to improve

Usb plugs for charging your phone does not work in every flight. uncomfortable chairs even in higher categories.

Luggage lost and nowhere to be found, no response from either airline regarding my bag

The seats were uncomfortable and barely reclined at all. Very little leg room despite being business class. The crew was friendly and the food was good. Had to use my own phone for in-flight entertainment.

No food, terms when selling are not clear. To pricy for the service in general

It was horrible. My experience with Avianca. I didn’t know it was Pakistan international Airlines but anyway, whatever it is it is bad horrible you guys need to upgrade everything in those planes. And you guys charge $130 for a carry-on did they wanna let me in with my carry-on that I travel everywhere with the luggage you guys are such a dog thank you

Boarding was excessively slow. They do it by groups in a way that it doesn’t make sense. After business class , ppl that need assistance and any other priority group they should have ppl board from the back to the front. First rows 20+. Then 15+. Then 10, etc. having ppl sitting in the back board last makes no sense. The libe backame long as soon as ppl on rows 10 or so where told to board. The line went all the way up the ramp and tunnel for 25 mins.

Seats are very tight even in Plus, no complimentary snacks or beverage

The chicken that was served in business class was cold!

I receive a service for what I pay, so it is fair.

Everything you need to know for your flight from Dulles Intl to Costa Rica

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