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$117+ Cheap flights from Dulles Intl (IAD) to Costa Rica

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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
dic. 24 — dic. 311
mié. 12/24
mié. 12/31
1 adult, Economy
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Find flight deals from Dulles Intl to Costa Rica

Cheapest flights from Dulles Intl to Costa Rica
Explore the most affordable flight options available from Dulles Intl to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 24, 2025.

This American Airlines deal was found by Cheapflights users on 11/24. 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.
dom. 12/79:15 amIAD - SJO
2 stops14h 13mAmerican Airlines
sáb. 12/136:00 amSJO - IAD
2 stops17h 01mAmerican Airlines
Deal found 11/24$240
This Mytrip deal was found by Cheapflights users on 11/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/611:55 pmIAD - SJO
Nonstop4h 55mAvianca
vie. 12/124:30 pmSJO - IAD
1 stop9h 40mAvianca
Deal found 11/22$241
This Priceline deal was found by Cheapflights users on 11/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/65:45 amIAD - SJO
1 stop9h 07mMultiple Airlines
lun. 12/85:10 pmSJO - IAD
Nonstop4h 25mMultiple Airlines
Deal found 11/22$243
This American Airlines deal was found by Cheapflights users on 11/24. 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.
dom. 12/76:25 amIAD - SJO
2 stops17h 03mAmerican Airlines
dom. 12/211:50 pmSJO - IAD
2 stops17h 52mAmerican Airlines
Deal found 11/24$245
This American Airlines deal was found by Cheapflights users on 11/24. 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.
mar. 11/256:44 amIAD - SJO
1 stop6h 47mAmerican Airlines
mar. 12/21:11 pmSJO - IAD
2 stops8h 56mAmerican Airlines
Deal found 11/24$246
This Mytrip deal was found by Cheapflights users on 11/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/611:55 pmIAD - SJO
Nonstop4h 55mAvianca
sáb. 12/135:10 pmSJO - IAD
Nonstop4h 25mAvianca
Deal found 11/23$247
This American Airlines deal was found by Cheapflights users on 11/23. 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.
lun. 11/245:29 pmIAD - SJO
2 stops19h 42mAmerican Airlines
jue. 11/271:11 pmSJO - IAD
2 stops29h 09mAmerican Airlines
Deal found 11/23$252
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/111:55 pmIAD - SJO
Nonstop4h 55mAvianca
lun. 12/85:10 pmSJO - IAD
Nonstop4h 25mAvianca
Deal found 11/24$254
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/111:55 pmIAD - SJO
Nonstop4h 55mAvianca
jue. 12/45:00 amSJO - IAD
1 stop8h 55mAvianca
Deal found 11/24$255
This Kiwi.com deal was found by Cheapflights users on 11/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/811:55 pmIAD - SJO
Nonstop4h 55mAvianca
sáb. 12/135:10 pmSJO - IAD
Nonstop4h 25mAvianca
Deal found 11/22$258
This Kiwi.com deal was found by Cheapflights users on 11/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/111:55 pmIAD - SJO
Nonstop4h 55mAvianca
vie. 12/55:00 amSJO - IAD
1 stop8h 55mAvianca
Deal found 11/22$259
This United Airlines deal was found by Cheapflights users on 11/23. 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.
dom. 12/78:30 amIAD - LIR
1 stop11h 07mUnited Airlines
dom. 12/1412:50 pmLIR - IAD
1 stop15h 26mUnited Airlines
Deal found 11/23$265

Cheap flight deals from Dulles Intl to Costa Rica

Keep the following information in mind while searching for Dulles Intl to Costa Rica flight deals. Data was last updated noviembre 24, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$240
(American Airlines)

One-way from

$117
(United Airlines)

Popular in

December

Cheapest in

October

Average price

$356

Good round-trip deal

$297 or less

Good one-way deal

$164 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-San José Juan Santamaria Intl flights.
Search Deals
From Washington, D.C. Dulles Intl to Costa Rica
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Costa Rica
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Costa Rica.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Costa Rica.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Costa Rica 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 noviembre 24, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Costa Rica that are best for you.

Fly from

Dulles Intl

Fly to

Costa Rica

Route

Depart

Return

Price

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

mié. 2/4

10:28 pm-12:55 pm

1 stop15h 27m

Liberia

mié. 2/11

8:35 am-8:49 pm

1 stop11h 14m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

sáb. 1/31

6:03 am-1:10 pm

1 stop8h 07m

Liberia

mar. 2/3

8:35 am-10:18 pm

1 stop12h 43m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

dom. 12/14

10:23 pm-11:44 am

1 stop14h 21m

Liberia

dom. 12/21

8:35 am-11:49 pm

1 stop14h 14m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

vie. 1/23

6:03 am-6:37 pm

1 stop13h 34m

Liberia

mar. 1/27

8:35 am-8:49 pm

1 stop11h 14m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

dom. 12/7

8:30 am-6:37 pm

1 stop11h 07m

Liberia

dom. 12/14

12:50 pm-5:16 am

1 stop15h 26m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

mié. 12/10

6:00 am-1:10 pm

1 stop8h 10m

Liberia

dom. 12/21

2:20 pm-11:49 pm

1 stop8h 29m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

vie. 12/12

6:00 am-6:37 pm

1 stop13h 37m

Liberia

dom. 12/14

12:50 pm-5:16 am

1 stop15h 26m

$275

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

vie. 2/6

6:03 am-1:10 pm

1 stop8h 07m

Liberia

lun. 2/9

8:35 am-8:49 pm

1 stop11h 14m

$281

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

sáb. 2/7

3:35 pm-7:06 am

1 stop16h 31m

San José Juan Santamaria Intl

dom. 2/15

10:08 am-3:15 am

1 stop16h 07m

$282

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

sáb. 2/14

3:35 pm-7:06 am

1 stop16h 31m

San José Juan Santamaria Intl

mar. 2/17

6:08 pm-3:15 am

1 stop8h 07m

$282

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Showing 1-10 of 44 results
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Best time to book a flight from Dulles Intl to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Costa Rica

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Costa Rica (average of $152). Flying from Washington, D.C. Dulles Intl Airport to Costa Rica in February is currently the most expensive (average of $264). 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 IAD to CR?

Find hourly flight availability from Dulles Intl to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 24, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Costa Rica, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 41% versus a flight in the morning.

Reviews of airlines servicing Costa Rica

Get insights into the airlines that provide service to Costa Rica. 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 Costa Rica. Reviews last updated noviembre 24, 2025.
See what other customers who have flown with Delta, Copa Airlines, and United Airlines from Washington, D.C. Dulles Intl Airport to Costa Rica have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
7,993 reviews
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Copa Airlines
7.6
Good
1,567 reviews
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,039 reviews
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,043 reviews
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Avianca
6.6
Okay
2,478 reviews
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Costa Rica. 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 Washington, D.C. Dulles Intl Airport to Costa Rica?

    For as low as $265, United Airlines can have you in Costa Rica from Washington, D.C. Dulles Intl Airport in 15h 27m. There are 2020 mi between Washington, D.C. Dulles Intl Airport and Costa Rica. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $117. Users have also found prices from $117 and $123 on American Airlines and Avianca, respectively.

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Costa Rica?

    On average you can expect to pay $350 for a flight from Washington, D.C. Dulles Intl Airport to Costa Rica. The cheapest flight overall is $137 while the most popular route, (Washington, D.C. Dulles Intl - San José Juan Santamaria Intl) is currently priced at $212.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Costa Rica 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 Washington, D.C. Dulles Intl Airport to Costa Rica?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Costa Rica (average of $152). Flying from Washington, D.C. Dulles Intl Airport to Costa Rica in February is currently the most expensive (average of $264). 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

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Alternative routes for Dulles Intl to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Dulles Intl to Costa Rica

Discover the top 6 airlines that operate flights from Dulles Intl to Costa Rica. 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 noviembre 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
Volaris El SalvadorCheapest$200Average$291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$235Average$577FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$237Average$514FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$245Average$366FlexibilityNo cancel feeOn-time70%
AviancaCheapest$256Average$391FlexibilityNo cancel feeOn-time71%
DeltaCheapest$272Average$462FlexibilityNo cancel feeOn-timeN/A

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