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 $107. Users have also found prices from $115 and $120 on American Airlines and Copa Airlines, respectively.

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.

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).

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

On average you can expect to pay $274 for a flight from Washington, D.C. Dulles Intl Airport to Costa Rica. The cheapest flight overall is $111 while the most popular route, (Washington, D.C. Dulles Intl - San José Juan Santamaria Intl) is currently priced at $236.

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Costa Rica?

The most popular airlines flying from Washington, D.C. Dulles Intl Airport to Costa Rica are American Airlines, Avianca and Copa Airlines. Something to consider prior to booking your flight.

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

Friday flights are generally found to be more expensive for flights from Washington, D.C. Dulles Intl Airport to Costa Rica. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Costa Rica.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 16 days in advance, which can save you up to 9% on flights from Washington, D.C. Dulles Intl Airport to Costa Rica compared to booking the week you need them. Waiting 16 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $343. For sooner than that we have options available in the next 3 days from $343.

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

The best pricing can be found in the month of October. Prices to Costa Rica from Washington, D.C. Dulles Intl Airport average $398. You can even find prices in October for less than $398, as users have found deals to Costa Rica from as low as $214. The month of December appears to be one of the more expensive times to travel to Costa Rica from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 65%.

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.

$244+ Flights from Washington, D.C. Dulles Intl Airport to Costa Rica

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Cheap flight deals from Dulles Intl to Costa Rica

Round-trip from	$253 (CheapOair)
One-way from	$107 (United Airlines)
Popular in	December
Cheapest in	October
Average price	$366
Good round-trip deal	$279 or less
Good one-way deal	$131 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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Highest demand for flights based on searches. 16% potential increase in price ($79 potential increase over avg. RT price).

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Cheapest flight prices on average. 6% potential price decrease ($24 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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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 July 3, 2025.

Wed 9/32:37 amIAD - SJO

1 stop19h 42mMultiple Airlines

Mon 9/84:17 pmSJO - IAD

1 stop18h 20mMultiple Airlines

Deal found 7/3

$253

Sat 11/83:31 pmIAD - SJO

1 stop17h 48mCopa Airlines

Sun 11/165:50 pmSJO - IAD

1 stop8h 32mCopa Airlines

Deal found 7/2

$256

Thu 7/101:05 amIAD - SJO

Nonstop4h 30mAvianca

Sat 7/195:10 pmSJO - IAD

Nonstop4h 35mAvianca

Deal found 7/2

$257

Fri 8/156:27 amIAD - SJO

1 stop13h 48mAmerican Airlines

Fri 8/221:55 pmSJO - IAD

1 stop16h 47mAmerican Airlines

Deal found 7/2

$262

Sun 8/172:25 pmIAD - SJO

1 stop18h 19mVolaris El Salvador

Sun 8/244:17 pmSJO - IAD

1 stop18h 23mVolaris El Salvador

Deal found 7/3

$264

Thu 8/146:34 amIAD - LIR

1 stop7h 01mAmerican Airlines

Mon 8/1812:30 pmLIR - IAD

1 stop8h 26mAmerican Airlines

Deal found 7/1

$285

Sun 7/2010:30 pmIAD - LIR

1 stop14h 14mUnited Airlines

Tue 7/291:20 pmLIR - IAD

1 stop8h 38mUnited Airlines

Deal found 7/1

$291

Tue 10/146:00 amIAD - LIR

1 stop8h 00mDelta

Mon 10/201:25 pmLIR - IAD

1 stop8h 42mDelta

Deal found 7/2

$300

Best flights from Dulles Intl to Costa Rica
Discover carefully curated flight deals from Dulles Intl to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Wed 9/32:37 amIAD - SJO

1 stop19h 42mMultiple Airlines

Mon 9/84:17 pmSJO - IAD

1 stop18h 20mMultiple Airlines

Deal found 7/3

$253

Wed 9/311:03 amIAD - SJO

1 stop10h 34mUnited Airlines

Wed 9/247:55 amSJO - IAD

1 stop14h 00mUnited Airlines

Deal found 7/1

$256

Thu 7/101:05 amIAD - SJO

Nonstop4h 30mAvianca

Sat 7/195:10 pmSJO - IAD

Nonstop4h 35mAvianca

Deal found 7/2

$257

Fri 8/157:44 amIAD - SJO

1 stop7h 11mAmerican Airlines

Fri 8/221:55 pmSJO - IAD

1 stop7h 01mAmerican Airlines

Deal found 7/3

$262

Sun 8/172:25 pmIAD - SJO

1 stop18h 19mVolaris El Salvador

Sun 8/244:17 pmSJO - IAD

1 stop18h 23mVolaris El Salvador

Deal found 7/3

$264

Wed 8/274:34 pmIAD - SJO

1 stop17h 00mCopa Airlines

Sun 8/315:54 pmSJO - IAD

1 stop8h 26mCopa Airlines

Deal found 7/2

$280

Tue 9/96:00 amIAD - LIR

1 stop8h 00mDelta

Sun 9/141:25 pmLIR - IAD

1 stop8h 48mDelta

Deal found 6/30

$371

Thu 8/146:27 amIAD - LIR

1 stop8h 32mAmerican Airlines

Mon 8/1812:30 pmLIR - IAD

1 stop8h 26mAmerican Airlines

Deal found 7/2

$285

Sun 7/2010:30 pmIAD - LIR

1 stop14h 14mUnited Airlines

Tue 7/291:20 pmLIR - IAD

1 stop8h 38mUnited Airlines

Deal found 7/1

$291

Last-minute flights from Dulles Intl to Costa Rica
Discover last-minute flight deals from Dulles Intl to Costa Rica. Data last updated July 3, 2025 and is based on user searches.

Tue 7/82:45 amIAD - SJO

1 stop6h 45mCopa Airlines

Sun 7/132:53 pmSJO - IAD

1 stop7h 36mCopa Airlines

Deal found 7/2

$290

Tue 7/85:53 pmIAD - SJO

1 stop15h 22mUnited Airlines

Mon 7/145:30 amSJO - IAD

1 stop16h 28mUnited Airlines

Deal found 7/3

$356

Thu 7/101:05 amIAD - SJO

Nonstop4h 30mAvianca

Sat 7/195:10 pmSJO - IAD

Nonstop4h 35mAvianca

Deal found 7/2

$257

Thu 7/106:35 amIAD - SJO

2 stops17h 30mAmerican Airlines

Mon 7/141:55 pmSJO - IAD

2 stops16h 38mAmerican Airlines

Deal found 7/2

$266

Thu 7/101:05 amIAD - SJO

Nonstop4h 30mMultiple Airlines

Sat 7/265:00 pmSJO - IAD

1 stop17h 40mMultiple Airlines

Deal found 7/2

$282

Sat 7/1210:19 pmIAD - LIR

1 stop15h 34mUnited Airlines

Wed 7/1611:05 amLIR - IAD

1 stop10h 53mUnited Airlines

Deal found 7/1

$287

Sat 7/121:05 amIAD - LIR

1 stop7h 35mMultiple Airlines

Sat 7/1910:15 amLIR - IAD

1 stop11h 30mMultiple Airlines

Deal found 7/1

$569

Sun 7/136:35 amIAD - LIR

1 stop6h 55mAmerican Airlines

Tue 7/222:25 pmLIR - IAD

2 stops24h 44mAmerican Airlines

Deal found 7/1

$297

Sun 7/132:25 pmIAD - SJO

1 stop18h 19mVolaris El Salvador

Sun 7/274:17 pmSJO - IAD

1 stop18h 23mVolaris El Salvador

Deal found 7/3

$305

Sun 7/137:59 pmIAD - LIR

2 stops21h 54mAlaska Airlines

Mon 7/214:58 pmLIR - IAD

2 stops24h 21mAlaska Airlines

Deal found 7/1

$811

Sun 7/2010:30 pmIAD - LIR

1 stop14h 14mUnited Airlines

Tue 7/291:20 pmLIR - IAD

1 stop8h 38mUnited Airlines

Deal found 7/1

$291

Thu 8/146:27 amIAD - LIR

1 stop8h 32mAmerican Airlines

Mon 8/1812:30 pmLIR - IAD

1 stop8h 26mAmerican Airlines

Deal found 7/2

$285

One-way flights from Dulles Intl to Costa Rica
Search for one-way flight options from Dulles Intl to Costa Rica. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Sun 9/76:00 amIAD - LIR

1 stop8h 10mUnited Airlines

Deal found 7/3

$107

Sun 9/146:25 amIAD - SJO

2 stops15h 17mAmerican Airlines

Deal found 7/3

$115

Wed 9/102:37 amIAD - SJO

1 stop19h 42mMultiple Airlines

Deal found 7/2

$116

Mon 9/222:25 amIAD - SJO

1 stop7h 54mCopa Airlines

Deal found 7/3

$120

Sat 7/262:25 pmIAD - SJO

1 stop18h 19mVolaris El Salvador

Deal found 7/3

$123

Mon 7/71:05 amIAD - SJO

Nonstop4h 30mAvianca

Deal found 7/2

$124

Sat 8/168:19 pmIAD - LIR

1 stop17h 16mAmerican Airlines

Deal found 7/2

$126

Thu 9/116:00 amIAD - LIR

1 stop8h 00mDelta

Deal found 7/3

$127

Wed 7/96:10 amIAD - SJO

1 stop15h 27mUnited Airlines

Deal found 7/1

$132

Thu 9/186:00 pmIAD - SJO

2 stops27h 42mIberia

Deal found 7/3

$138

Wed 9/37:00 amIAD - LIR

3 stops25h 23mAlaska Airlines

Deal found 7/3

$258

Sat 8/301:05 amIAD - LIR

1 stop16h 35mMultiple Airlines

Deal found 7/3

$272

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 9/3

2:37 am-8:19 pm

1 stop19h 42m

San José Juan Santamaria Intl

Mon 9/8

4:17 pm-12:37 pm

1 stop18h 20m

$253

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 9/3

11:03 am-7:37 pm

1 stop10h 34m

San José Juan Santamaria Intl

Wed 9/24

7:55 am-11:55 pm

1 stop14h 00m

$256

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 7/10

1:05 am-3:35 am

Nonstop4h 30m

San José Juan Santamaria Intl

Sat 7/19

5:10 pm-11:45 pm

Nonstop4h 35m

$257

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 8/15

6:27 am-6:15 pm

1 stop13h 48m

San José Juan Santamaria Intl

Fri 8/22

1:55 pm-8:42 am

1 stop16h 47m

$262

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 8/17

2:25 pm-6:44 am

1 stop18h 19m

San José Juan Santamaria Intl

Sun 8/24

4:17 pm-12:40 pm

1 stop18h 23m

$264

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 8/27

4:34 pm-7:34 am

1 stop17h 00m

San José Juan Santamaria Intl

Sun 8/31

5:54 pm-4:20 am

1 stop8h 26m

$280

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Thu 8/14

6:27 am-12:59 pm

1 stop8h 32m

Liberia

Mon 8/18

12:30 pm-10:56 pm

1 stop8h 26m

$285

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Sun 7/20

10:30 pm-10:44 am

1 stop14h 14m

Liberia

Tue 7/29

1:20 pm-11:58 pm

1 stop8h 38m

$291

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Tue 9/9

6:00 am-12:00 pm

1 stop8h 00m

Liberia

Sun 9/14

1:25 pm-12:13 am

1 stop8h 48m

$371

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Mon 9/8

10:05 pm-12:10 pm

1 stop16h 05m

$107

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 21 results

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, 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?

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 46% versus a flight in the morning.

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

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. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Costa Rica

See what other customers who have flown with Alaska Airlines, Delta, and Copa 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.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Surinder,May 2025

SEA - YYZ

Delta

8.0

Very good

7,982 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Surinder,May 2025

SEA - YYZ

Copa Airlines

7.5

Good

1,467 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Surinder,May 2025

SEA - YYZ

United Airlines

7.4

Good

8,861 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Surinder,May 2025

SEA - YYZ

Related info for your journey

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 $107. Users have also found prices from $115 and $120 on American Airlines and Copa Airlines, respectively.
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Costa Rica?
On average you can expect to pay $274 for a flight from Washington, D.C. Dulles Intl Airport to Costa Rica. The cheapest flight overall is $111 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, 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

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Dulles Intl to Tegucigalpa flights

Top 6 airlines flying from Dulles Intl to Costa Rica

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$174	Average$464	FlexibilityNo cancel fee	On-timeN/A
Volaris El Salvador	Cheapest$179	Average$290	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$210	Average$599	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$230	Average$484	FlexibilityNo cancel fee	On-time71%
Avianca	Cheapest$253	Average$396	FlexibilityNo cancel fee	On-time71%
Copa Airlines	Cheapest$274	Average$401	FlexibilityNo cancel fee	On-time70%

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$107+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Costa Rica with Cheapflights

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3. Compare prices and book

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 July 3, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Dulles Intl to Costa Rica

Cheapest flights from Dulles Intl to Costa RicaExplore 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 July 3, 2025.

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 July 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Costa Rica that are best for you.

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.

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?

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 July 3, 2025.

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.

Reviews of airlines servicing Costa Rica

See what other customers who have flown with Alaska Airlines, Delta, and Copa 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.

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?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Dulles Intl to Costa Rica

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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 July 3, 2025.