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Dulles Intl

$187+ Cheap flights from Costa Rica to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — IAD
Aug 13 — Aug 201
Thu 8/13
Thu 8/20
1 adult, Economy
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Cheap flight deals from Costa Rica to Dulles Intl

Cheapest flights from Costa Rica to Dulles Intl
Explore the most affordable flight options available from Costa Rica to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2026.

This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/31:20 pm
LIR
-
IAD
1 stop9h 10m
United Airlines
Mon 9/76:30 am
IAD
-
LIR
1 stop7h 40m
United Airlines
Deal found 7/9$315
This American Airlines deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:45 pm
LIR
-
IAD
2 stops28h 31m
American Airlines
Thu 10/157:13 pm
IAD
-
LIR
2 stops20h 05m
American Airlines
Deal found 7/11$317
This Avianca deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:25 pm
SJO
-
IAD
1 stop6h 50m
Avianca
Mon 9/284:10 am
IAD
-
SJO
1 stop6h 35m
Avianca
Deal found 7/9$331
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:00 am
SJO
-
IAD
2 stops28h 11m
American Airlines
Mon 9/2810:25 am
IAD
-
SJO
2 stops28h 34m
American Airlines
Deal found 7/9$334
This Avianca deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:05 am
SJO
-
IAD
1 stop8h 50m
Avianca
Sat 10/34:10 am
IAD
-
SJO
1 stop6h 35m
Avianca
Deal found 7/13$336
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:15 pm
SJO
-
IAD
Nonstop4h 44m
United Airlines
Sat 11/75:55 pm
IAD
-
SJO
1 stop18h 30m
United Airlines
Deal found 7/13$338
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:25 pm
SJO
-
IAD
2 stops24h 56m
United Airlines
Sat 11/710:10 pm
IAD
-
SJO
1 stop35h 22m
United Airlines
Deal found 7/9$339
This Avianca deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:25 pm
SJO
-
IAD
1 stop6h 50m
Avianca
Tue 9/153:40 am
IAD
-
SJO
1 stop6h 50m
Avianca
Deal found 7/9$340
This Avianca deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:10 pm
SJO
-
IAD
1 stop9h 35m
Avianca
Mon 9/143:40 am
IAD
-
SJO
1 stop6h 50m
Avianca
Deal found 7/10$341
This Copa Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:08 am
SJO
-
IAD
1 stop22h 13m
Copa Airlines
Wed 8/54:34 pm
IAD
-
SJO
1 stop16h 36m
Copa Airlines
Deal found 7/10$342
This United Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:45 am
SJO
-
IAD
1 stop14h 28m
United Airlines
Sat 10/246:15 am
IAD
-
SJO
1 stop15h 22m
United Airlines
Deal found 7/10$343
This Avianca deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/224:35 pm
SJO
-
IAD
1 stop7h 40m
Avianca
Tue 7/285:35 pm
IAD
-
SJO
1 stop8h 05m
Avianca
Deal found 7/13$344

Find flight deals from Costa Rica to Dulles Intl

Keep the following information in mind while searching for Costa Rica to Dulles Intl flight deals. Data was last updated July 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$315
(United Airlines)

One-way from

$187
(United Airlines)

Popular in

July

Cheapest in

February

Average price

$380
Provider with most accurate pricing for San José Juan Santamaria Intl-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Washington, D.C. (WAS) flights.
Search Deals
From Costa Rica to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Costa Rica to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Costa Rica to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 14, 2026.
Use the filters below to find and compare flights from Costa Rica to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LiberiaWashington, D.C.

LIR - IAD

LIRIAD

Liberia

Thu 9/3

1:20 pm-12:30 am

1 stop9h 10m

Washington, D.C. Dulles Intl

Mon 9/7

6:30 am-12:10 pm

1 stop7h 40m

$315

LiberiaWashington, D.C.

LIR - IAD

LIRIAD

Liberia

Thu 10/8

2:45 pm-9:16 pm

2 stops28h 31m

Washington, D.C. Dulles Intl

Thu 10/15

7:13 pm-1:18 pm

2 stops20h 05m

$317
Quickest round-trip

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Sun 7/26

6:17 pm-4:21 am

1 stop8h 04m

Washington, D.C. Dulles Intl

Sat 10/3

2:25 am-8:19 am

1 stop7h 54m

$342

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Tue 10/13

12:44 pm-7:19 am

1 stop16h 35m

Washington, D.C. Dulles Intl

Tue 10/20

6:15 am-7:37 pm

1 stop15h 22m

$343

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Sat 9/5

8:45 am-9:22 pm

1 stop34h 37m

Washington, D.C. Dulles Intl

Sun 9/20

8:31 am-12:21 pm

1 stop29h 50m

$343

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Fri 12/25

9:05 am-11:00 pm

1 stop12h 55m

Washington, D.C. Dulles Intl

Wed 12/30

6:30 am-6:16 pm

1 stop12h 46m

$343

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Thu 12/24

9:40 am-5:58 am

1 stop19h 18m

Washington, D.C. Dulles Intl

Sun 1/3

10:42 pm-8:39 pm

1 stop22h 57m

$343

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Tue 9/8

5:55 pm-3:04 pm

1 stop19h 09m

Washington, D.C. Dulles Intl

Tue 9/15

9:35 am-7:10 am

1 stop23h 35m

$374

LiberiaWashington, D.C.

LIR - IAD

LIRIAD

Liberia

Fri 7/24

3:27 pm-11:32 am

1 stop18h 05m

Washington, D.C. Dulles Intl

Sun 7/26

10:23 pm-3:19 pm

1 stop18h 56m

$383

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Thu 12/24

6:03 pm-3:19 am

1 stop8h 16m

Washington, D.C. Dulles Intl

Sat 1/2

1:13 am-8:17 am

1 stop8h 04m

$422

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/11

Showing 1-10 of 38 resultsSorted by cheapest first
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Best time to book a flight from Costa Rica to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Costa Rica with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Costa Rica to Washington, D.C. Dulles Intl Airport

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

Currently, August is the cheapest month in which you can book a flight from Costa Rica to Washington, D.C. Dulles Intl Airport (average of $104). Flying from Costa Rica to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $287). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CR to IAD?

Find hourly flight availability from Costa Rica to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 14, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Costa Rica to Washington, D.C. Dulles Intl Airport as you normally would.

How often are flights from Costa Rica to Washington, D.C. delayed?

About 14% of weekly flights between Costa Rica and Washington, D.C. have experienced delays in the past year, with the average delay time being 123 minutes.

What is the most punctual flight time for Costa Rica to Washington, D.C. flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Costa Rica to Washington, D.C. flights?

Over the last year, Avianca have had the lowest number of delays on this route, with just 13% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from Costa Rica to Washington, D.C. Dulles Intl Airport, you should look to book at least 70 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated July 14, 2026.
Read through reviews of airlines operating flights from Costa Rica to Washington, D.C. Dulles Intl Airport, such as Copa Airlines,United Airlines, andAvianca. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,560 reviews

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Overall

7.6

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
Copa Airlines
7.6
Good
1,560 reviews
Copa Airlines
7.6
Good
1,560 reviews

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Overall

7.6

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
United Airlines
7.4
Good
9,991 reviews
Copa Airlines
7.6
Good
1,560 reviews

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Overall

7.6

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
Avianca
6.5
Okay
2,524 reviews
Copa Airlines
7.6
Good
1,560 reviews

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Overall

7.6

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.

Related info for your journey

Find useful and relevant information for your journey from Costa Rica to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Costa Rica to Washington, D.C. Dulles Intl Airport?

    United Airlines, American Airlines, and Copa Airlines can get you from Costa Rica to Washington, D.C. Dulles Intl Airport in just under 8h 04m. Your travel time can differ by up to 20h 27m. Costa Rica and Washington, D.C. Dulles Intl Airport are separated by a distance of 2042 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Costa Rica to Washington, D.C. Dulles Intl Airport one-way?

    For one-way options, check prices for Avianca. According to our data, you can fly for as low as $129. Users have also found prices from $136 and $136 on American Airlines and United Airlines, respectively.

  • Can I find deals for flights from Costa Rica to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Costa Rica to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Costa Rica to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Costa Rica to Dulles Intl.

  • Can I find deals for business class flights from Costa Rica to Dulles Intl?

    Yes. Cheapflights offers flight deals from Costa Rica to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Costa Rica to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Costa Rica to Washington, D.C. Dulles Intl Airport (average of $104). Flying from Costa Rica to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $287). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Manassas
Fredericksburg
Falls Church
Hanover
Laurel
Sterling
Clinton
Hunt Valley
Cordova

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Top 3 airlines flying from Costa Rica to Dulles Intl

Discover the top 3 airlines that operate flights from Costa Rica to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$201Average$347FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$305FlexibilityNo cancel feeOn-time69%
Copa AirlinesCheapest$277Average$377FlexibilityNo cancel feeOn-time70%

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