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$102+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
Nov 9 — Nov 161
Sun 11/9
Sun 11/16
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 October 10, 2025.

This Copa Airlines deal was found by Cheapflights users on 10/9. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/61:13 amIAD - SJO
2 stops16h 37mCopa Airlines
Wed 11/128:10 amSJO - IAD
1 stop14h 23mCopa Airlines
Deal found 10/9$259
This Cheapflightsfares deal was found by Cheapflights users on 10/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/72:35 amIAD - SJO
1 stop7h 05mAvianca
Tue 10/284:15 pmSJO - IAD
1 stop6h 55mAvianca
Deal found 10/7$261
This Copa Airlines deal was found by Cheapflights users on 10/9. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/61:13 amIAD - SJO
3 stops16h 37mCopa Airlines
Mon 11/174:08 amSJO - IAD
1 stop8h 54mCopa Airlines
Deal found 10/9$262
This Gotogate deal was found by Cheapflights users on 10/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:55 pmIAD - SJO
Nonstop4h 55mAvianca
Tue 12/95:10 pmSJO - IAD
Nonstop4h 25mAvianca
Deal found 10/9$263
This Cheapflightsfares deal was found by Cheapflights users on 10/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/72:35 amIAD - SJO
1 stop7h 05mAvianca
Mon 10/134:20 pmSJO - IAD
1 stop6h 55mAvianca
Deal found 10/7$264
This United Airlines deal was found by Cheapflights users on 10/7. 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 11/1510:12 pmIAD - LIR
1 stop14h 32mUnited Airlines
Sun 11/238:35 amLIR - IAD
1 stop14h 09mUnited Airlines
Deal found 10/7$265
This Copa Airlines deal was found by Cheapflights users on 10/9. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/93:32 pmIAD - SJO
1 stop16h 38mCopa Airlines
Sun 12/145:53 pmSJO - IAD
1 stop8h 29mCopa Airlines
Deal found 10/9$266
This United Airlines deal was found by Cheapflights users on 10/8. 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 11/88:57 amIAD - SJO
Nonstop4h 58mUnited Airlines
Tue 11/118:45 amSJO - IAD
1 stop11h 06mUnited Airlines
Deal found 10/8$267
This Copa Airlines deal was found by Cheapflights users on 10/7. 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.
Thu 11/68:22 amIAD - SJO
1 stop9h 18mCopa Airlines
Wed 11/124:08 amSJO - IAD
1 stop8h 54mCopa Airlines
Deal found 10/7$268
This American Airlines deal was found by Cheapflights users on 10/9. 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 11/35:29 pmIAD - LIR
2 stops19h 52mAmerican Airlines
Thu 11/61:21 pmLIR - IAD
2 stops19h 58mAmerican Airlines
Deal found 10/9$269
This Copa Airlines deal was found by Cheapflights users on 10/9. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:13 amIAD - SJO
1 stop8h 06mCopa Airlines
Thu 11/204:08 amSJO - IAD
1 stop8h 54mCopa Airlines
Deal found 10/9$269
This Copa Airlines deal was found by Cheapflights users on 10/8. 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.
Sun 11/233:24 pmIAD - SJO
1 stop17h 09mCopa Airlines
Thu 11/279:17 amSJO - IAD
2 stops17h 05mCopa Airlines
Deal found 10/8$271

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 October 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$259
(Copa Airlines)

One-way from

$102
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$313

Good round-trip deal

$344 or less

Good one-way deal

$128 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. 14% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 10, 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.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 1/5

1:12 am-7:06 am

1 stop6h 54m

San José Juan Santamaria Intl

Tue 3/3

10:08 am-3:15 am

1 stop16h 07m

$262

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Thu 11/6

6:00 am-6:37 pm

1 stop13h 37m

Liberia

Mon 11/10

8:35 am-8:51 pm

1 stop11h 16m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Sat 11/15

6:00 am-1:10 pm

1 stop8h 10m

Liberia

Thu 11/20

2:20 pm-11:44 pm

1 stop8h 24m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Sat 11/15

10:12 pm-11:44 am

1 stop14h 32m

Liberia

Sun 11/23

8:35 am-11:44 pm

1 stop14h 09m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Sat 11/15

10:10 pm-1:10 pm

1 stop16h 00m

Liberia

Sat 11/22

2:01 pm-11:59 pm

1 stop8h 58m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Fri 10/31

6:00 am-12:10 pm

1 stop8h 10m

Liberia

Fri 11/7

8:35 am-10:12 pm

1 stop12h 37m

$281

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Thu 12/11

2:06 pm-12:25 pm

2 stops23h 19m

Liberia

Sat 12/20

11:55 am-8:42 am

2 stops19h 47m

$282

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 3/7

3:34 pm-8:20 am

1 stop17h 46m

San José Juan Santamaria Intl

Sun 3/15

8:11 am-4:15 am

1 stop18h 04m

$282

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 1/12

6:03 am-6:16 pm

1 stop13h 13m

San José Juan Santamaria Intl

Mon 1/19

8:45 am-8:49 pm

1 stop11h 04m

$288

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 11/28

3:24 pm-8:19 am

1 stop17h 55m

San José Juan Santamaria Intl

Mon 12/8

8:10 am-3:22 am

1 stop18h 12m

$302

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Showing 1-10 of 42 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 $151). Flying from Washington, D.C. Dulles Intl Airport to Costa Rica in February is currently the most expensive (average of $271). 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 October 10, 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.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Costa Rica. Price data was last updated on November 18, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Costa Rica flight should consider departing on Sunday at noon when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 10, 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
8.0
Very good
7,969 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,969 reviews
Delta
8.0
Very good
7,969 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Copa Airlines
7.6
Good
1,545 reviews
Delta
8.0
Very good
7,969 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,968 reviews
Delta
8.0
Very good
7,969 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
11,043 reviews
Delta
8.0
Very good
7,969 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Avianca
6.7
Okay
2,447 reviews
Delta
8.0
Very good
7,969 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $262, Copa Airlines can have you in Costa Rica from Washington, D.C. Dulles Intl Airport in 6h 54m. There are 2042 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 flights from Washington, D.C. Dulles Intl Airport to Costa Rica?

    On average you can expect to pay $301 for a flight from Washington, D.C. Dulles Intl Airport to Costa Rica. The cheapest flight overall is $125 while the most popular route, (Washington, D.C. Dulles Intl - San José Juan Santamaria Intl) is currently priced at $236.

  • 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 $151). Flying from Washington, D.C. Dulles Intl Airport to Costa Rica in February is currently the most expensive (average of $271). 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 October 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$174Average$463FlexibilityNo cancel feeOn-timeN/A
Volaris El SalvadorCheapest$202Average$291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$232Average$574FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$237Average$526FlexibilityNo cancel feeOn-time71%
AviancaCheapest$256Average$396FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$257Average$383FlexibilityNo cancel feeOn-time70%

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