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$125+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
Jan 27 — Feb 31
Mon 1/27
Mon 2/3
1 adult, Economy
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Cheap flight deals from Dulles Intl to Costa Rica

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Costa Rica (CR0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 22, 2025.

Round-trip from

$284
(Booking.com)

One-way from

$125
(Copa Airlines)

Good round-trip deal

$481 or less

Good one-way deal

$149 or less
From Washington, D.C. Dulles Intl to Costa Rica
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One-way flight from Washington, D.C. Dulles Intl to Costa Rica
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Costa Rica.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Costa Rica.
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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 January 22, 2025.

This Avianca deal was found by Cheapflights users on 1/21. 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 5/192:35 amIAD - SJO
1 stop7h 05mAvianca
Tue 6/34:20 pmSJO - IAD
1 stop6h 55mAvianca
Deal found 1/21$283
This Booking.com deal was found by Cheapflights users on 1/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/41:30 amIAD - SJO
1 stop7h 05mMultiple Airlines
Sun 3/911:15 amSJO - IAD
1 stop22h 54mMultiple Airlines
Deal found 1/22$284
This Copa Airlines deal was found by Cheapflights users on 1/21. 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.
Sat 5/102:21 amIAD - SJO
1 stop12h 59mCopa Airlines
Thu 5/1510:57 amSJO - IAD
1 stop15h 23mCopa Airlines
Deal found 1/21$287
This Mytrip deal was found by Cheapflights users on 1/22. 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.
Wed 3/51:24 amIAD - SJO
1 stop12h 37mVolaris El Salvador
Sun 3/1611:15 amSJO - IAD
1 stop22h 54mVolaris El Salvador
Deal found 1/22$289
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Sat 11/85:03 amIAD - SJO
2 stops15h 27mAmerican Airlines
Sat 11/221:55 pmSJO - IAD
2 stops19h 34mAmerican Airlines
Deal found 1/21$298
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Sun 1/266:00 amIAD - SJO
1 stop15h 39mUnited Airlines
Sat 2/12:30 pmSJO - IAD
Nonstop4h 42mUnited Airlines
Deal found 1/20$326
This United Airlines deal was found by Cheapflights users on 1/21. 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 1/306:00 amIAD - LIR
1 stop12h 57mUnited Airlines
Tue 2/45:15 pmLIR - IAD
1 stop13h 13mUnited Airlines
Deal found 1/21$328
This American Airlines deal was found by Cheapflights users on 1/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/38:05 pmIAD - LIR
1 stop17h 25mAmerican Airlines
Mon 2/103:35 pmLIR - IAD
2 stops20h 47mAmerican Airlines
Deal found 1/22$332
This Delta deal was found by Cheapflights users on 1/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/307:17 amIAD - LIR
1 stop8h 12mDelta
Mon 2/32:20 pmLIR - IAD
1 stop9h 02mDelta
Deal found 1/21$341
This Air Canada deal was found by Cheapflights users on 1/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/223:55 pmIAD - LIR
1 stop22h 50mAir Canada
Wed 1/293:30 pmLIR - IAD
1 stop17h 16mAir Canada
Deal found 1/20$423
This Mytrip deal was found by Cheapflights users on 1/22. 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.
Tue 3/187:00 amIAD - LIR
2 stops33h 00mMultiple Airlines
Sun 3/236:40 amLIR - IAD
2 stops27h 29mMultiple Airlines
Deal found 1/22$573
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:55 pmIAD - LIR
2 stops26h 20mAlaska Airlines
Wed 9/2410:00 amLIR - IAD
2 stops27h 00mAlaska Airlines
Deal found 1/21$639

Find flights from Dulles Intl to Costa Rica within your budget

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 January 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 5/19

2:35 am-7:40 am

1 stop7h 05m

San José Juan Santamaria Intl

Tue 6/3

4:20 pm-1:15 am

1 stop6h 55m

$283

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 3/4

1:30 am-7:35 am

1 stop7h 05m

San José Juan Santamaria Intl

Wed 3/12

1:08 pm-11:58 pm

1 stop8h 50m

$284

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 2/15

1:24 am-10:17 am

1 stop9h 53m

San José Juan Santamaria Intl

Wed 3/12

1:08 pm-12:09 pm

1 stop21h 01m

$285

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 5/10

2:21 am-9:59 am

1 stop9h 38m

San José Juan Santamaria Intl

Thu 5/15

6:07 pm-4:20 am

1 stop8h 13m

$287

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 2/7

8:05 pm-1:47 pm

2 stops18h 42m

San José Juan Santamaria Intl

Fri 2/14

3:10 pm-8:42 am

1 stop16h 32m

$298

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 3/21

6:00 am-11:42 am

1 stop7h 42m

San José Juan Santamaria Intl

Tue 3/25

5:30 am-10:13 pm

1 stop14h 43m

$313

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Thu 5/8

5:26 pm-11:15 am

2 stops19h 49m

Liberia

Tue 5/13

2:35 pm-12:27 pm

2 stops19h 52m

$328

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Mon 2/24

6:00 am-12:42 pm

1 stop7h 42m

Liberia

Fri 2/28

3:54 pm-12:20 am

1 stop7h 26m

$346

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Wed 2/19

6:00 am-5:57 pm

1 stop12h 57m

Liberia

Wed 2/26

8:50 am-9:03 pm

1 stop11h 13m

$348

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Thu 2/13

3:55 pm-1:45 pm

1 stop22h 50m

Liberia

Thu 2/20

2:45 pm-3:13 pm

1 stop23h 28m

$497

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 28 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.

Travel insights for flights from Dulles Intl to Costa Rica

Get recent, data-driven insights about flights from Dulles Intl to Costa Rica including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Costa Rica (average of $398). Flying from Washington, D.C. Dulles Intl Airport to Costa Rica in March is currently the most expensive (average of $555). 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 January 22, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Costa Rica, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 Tuesday evenings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Rica ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit Costa Rica when rainfall is around 0.0 in.

Temperature in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Rica, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

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 January 22, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Costa Rica, such as Volaris El Salvador, Copa Airlines and Avianca. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,654 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,707 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,512 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Copa Airlines
7.7
Good
1,659 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,975 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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.

  • 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 Copa Airlines. According to our data, you can fly for as low as $125. Users have also found prices from $126 and $128 on Avianca and American Airlines, respectively.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Costa Rica?

    Before booking your flight to Costa Rica from Washington, D.C. Dulles Intl Airport, check out the most reliable airlines to get you to your destination on time: Avianca (84%), Avianca Costa Rica (84%), United Airlines( 58%).

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

    On average you can expect to pay $512 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 $242.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Costa Rica (average of $398). Flying from Washington, D.C. Dulles Intl Airport to Costa Rica in March is currently the most expensive (average of $555). 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 January 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Volaris El SalvadorCheapest$179Average$290FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$182Average$665FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$217Average$524FlexibilityNo cancel feeOn-time71%
AviancaCheapest$237Average$362FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$268Average$423FlexibilityNo cancel feeOn-time70%
DeltaCheapest$276Average$516FlexibilityNo cancel feeOn-timeN/A
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