Costa Rica

$124+ 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
Feb 11 — Feb 181
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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 February 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$287
(Copa Airlines)

One-way from

$124
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$363

Good round-trip deal

$501 or less

Good one-way deal

$129 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-San José Juan Santamaria Intl flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-San José Juan Santamaria Intl flights.
From Washington, D.C. Dulles Intl to Costa Rica
One-way flight from Washington, D.C. Dulles Intl to Costa Rica
Highest demand for flights based on searches. 16% potential increase in price ($81 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($25 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Costa Rica.
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Costa Rica.

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 February 6, 2025.

This Copa Airlines deal was found by Cheapflights users on 2/5. 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 2/93:34 pmIAD - SJO
1 stop17h 34mCopa Airlines
Tue 2/115:21 pmSJO - IAD
1 stop8h 54mCopa Airlines
Deal found 2/5$287
This Booking.com deal was found by Cheapflights users on 2/5. 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.
Mon 3/31:30 amIAD - SJO
1 stop7h 05mMultiple Airlines
Wed 3/121:08 pmSJO - IAD
1 stop21h 01mMultiple Airlines
Deal found 2/5$289
This CheapOair deal was found by Cheapflights users on 2/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/81:00 pmIAD - SJO
1 stop22h 17mVolaris El Salvador
Mon 2/1011:15 amSJO - IAD
1 stop22h 54mVolaris El Salvador
Deal found 2/4$291
This American Airlines deal was found by Cheapflights users on 2/5. 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 2/86:10 amIAD - SJO
1 stop17h 59mAmerican Airlines
Sat 2/156:00 amSJO - IAD
1 stop15h 33mAmerican Airlines
Deal found 2/5$294
This Priceline deal was found by Cheapflights users on 2/6. 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.
Mon 3/31:30 amIAD - SJO
1 stop7h 05mAvianca
Tue 3/114:40 pmSJO - IAD
1 stop6h 30mAvianca
Deal found 2/6$299
This American Airlines deal was found by Cheapflights users on 2/6. 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 3/295:20 pmIAD - LIR
2 stops21h 51mAmerican Airlines
Thu 4/312:53 pmLIR - IAD
2 stops22h 49mAmerican Airlines
Deal found 2/6$343
This United Airlines deal was found by Cheapflights users on 2/5. 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.
Fri 4/1810:20 pmIAD - LIR
1 stop15h 33mUnited Airlines
Wed 4/233:25 pmLIR - IAD
1 stop18h 05mUnited Airlines
Deal found 2/5$344
This Delta deal was found by Cheapflights users on 2/5. 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.
Fri 3/76:00 amIAD - LIR
1 stop7h 42mDelta
Thu 3/132:45 pmLIR - IAD
1 stop7h 43mDelta
Deal found 2/5$346
This United Airlines deal was found by Cheapflights users on 2/5. 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 3/810:20 pmIAD - SJO
1 stop14h 36mUnited Airlines
Thu 3/137:45 amSJO - IAD
1 stop12h 28mUnited Airlines
Deal found 2/5$364
This Air Canada deal was found by Cheapflights users on 2/4. 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 2/53:55 pmIAD - LIR
1 stop22h 50mAir Canada
Wed 2/122:45 pmLIR - IAD
1 stop23h 28mAir Canada
Deal found 2/4$373
This Mytrip deal was found by Cheapflights users on 2/5. 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.
Sat 3/292:22 amIAD - LIR
2 stops12h 48mMultiple Airlines
Sun 4/66:40 amLIR - IAD
2 stops15h 30mMultiple Airlines
Deal found 2/5$645
This Alaska Airlines deal was found by Cheapflights users on 2/5. 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.
Sun 9/145:00 pmIAD - LIR
1 stop29h 15mAlaska Airlines
Thu 10/3010:00 amLIR - IAD
1 stop28h 50mAlaska Airlines
Deal found 2/5$659

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 February 6, 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

Sun 2/9

3:34 pm-8:08 am

1 stop17h 34m

San José Juan Santamaria Intl

Tue 2/11

5:21 pm-3:15 am

1 stop8h 54m

$287

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 3/3

1:30 am-7:35 am

1 stop7h 05m

San José Juan Santamaria Intl

Wed 3/12

1:08 pm-12:09 pm

1 stop21h 01m

$289

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 3/15

2:05 pm-10:14 am

1 stop22h 09m

San José Juan Santamaria Intl

Sun 3/23

11:15 am-12:09 pm

1 stop22h 54m

$292

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 3/3

1:30 am-7:35 am

1 stop7h 05m

San José Juan Santamaria Intl

Tue 3/11

4:40 pm-1:10 am

1 stop6h 30m

$299

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 5/2

5:00 am-6:24 pm

2 stops15h 24m

San José Juan Santamaria Intl

Mon 5/5

11:59 pm-10:57 am

1 stop8h 58m

$308

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Wed 2/26

5:13 pm-1:55 pm

2 stops21h 42m

Liberia

Mon 3/3

3:45 pm-1:18 pm

2 stops20h 33m

$342

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Fri 4/18

10:20 pm-11:53 am

1 stop15h 33m

Liberia

Wed 4/23

3:25 pm-11:30 am

1 stop18h 05m

$344

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Fri 3/7

6:00 am-12:42 pm

1 stop7h 42m

Liberia

Thu 3/13

2:45 pm-12:28 am

1 stop7h 43m

$346

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 3/8

10:20 pm-11:56 am

1 stop14h 36m

San José Juan Santamaria Intl

Thu 3/13

7:45 am-10:13 pm

1 stop12h 28m

$364

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Sun 4/6

2:35 pm-1:10 pm

1 stop24h 35m

Liberia

Thu 4/10

1:45 pm-3:13 pm

1 stop23h 28m

$441

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 30 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 February 6, 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 47% 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 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.

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 February 6, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Costa Rica, such as Southwest, Alaska Airlines and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Overall

8.1

Food

7.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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.

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort