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Cheap flights from Washington, D.C. Dulles Intl Airport to Costa Rica from $109

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Costa Rica departing on 4/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
8:11 pm - 11:24 am
IAD
-
LIR
17h 13m
2 stops
American Airlines Logo
2:40 pm - 6:41 pm
LIR
-
IAD
26h 01m
2 stops
$271American Airlines
Wed, Apr 15 - Mon, Apr 20
American Airlines Logo
7:26 pm - 11:28 am
IAD
-
LIR
18h 02m
1 stop
American Airlines Logo
12:28 pm - 11:59 pm
LIR
-
IAD
9h 31m
1 stop
$272American Airlines
Tue, Apr 14 - Wed, Apr 29
Avianca Logo
4:00 am - 8:40 am
IAD
-
SJO
6h 40m
1 stop
Avianca Logo
3:05 pm - 2:40 am
SJO
-
IAD
9h 35m
1 stop
$273Avianca
Mon, Mar 9 - Wed, Mar 18
American Airlines Logo
5:00 am - 12:23 pm
IAD
-
LIR
8h 23m
1 stop
American Airlines Logo
3:29 pm - 10:53 pm
LIR
-
IAD
30h 24m
1 stop
$273American Airlines
Thu, Feb 26 - Mon, Mar 2
Avianca Logo
4:15 pm - 11:40 pm
IAD
-
SJO
8h 25m
1 stop
Avianca Logo
6:00 am - 4:55 pm
SJO
-
IAD
9h 55m
2 stops
$275Avianca
Sun, Feb 22 - Thu, Feb 26
Multiple Airlines Logo
1:30 am - 7:45 am
IAD
-
SJO
7h 15m
1 stop
Multiple Airlines Logo
5:00 pm - 11:27 am
SJO
-
IAD
17h 27m
1 stop
$276Multiple Airlines
Tue, Feb 17 - Sat, Feb 28
Volaris El Salvador Logo
1:07 pm - 6:50 am
IAD
-
SJO
18h 43m
1 stop
Volaris El Salvador Logo
2:50 pm - 12:27 pm
SJO
-
IAD
19h 37m
1 stop
$278Volaris El Salvador
Sun, Mar 1 - Wed, Mar 18
Copa Airlines Logo
3:35 pm - 7:05 am
IAD
-
SJO
16h 30m
1 stop
Copa Airlines Logo
5:51 pm - 3:15 am
SJO
-
IAD
8h 24m
1 stop
$281Copa Airlines
Sat, Feb 28 - Fri, Mar 6
United Airlines Logo
6:03 am - 1:10 pm
IAD
-
LIR
8h 07m
1 stop
United Airlines Logo
8:35 am - 10:16 pm
LIR
-
IAD
12h 41m
1 stop
$281United Airlines
Wed, Feb 18 - Wed, Mar 4
United Airlines Logo
10:31 pm - 11:55 am
IAD
-
LIR
14h 24m
1 stop
United Airlines Logo
1:01 pm - 11:59 pm
LIR
-
IAD
8h 58m
1 stop
$286United Airlines
Sat, Mar 7 - Wed, Mar 11

Avianca flights from Washington, D.C. Dulles Intl Airport to Costa Rica

Our best Avianca deals on Washington, D.C. Dulles Intl Airport to Costa Rica flight tickets
Avianca
May 14
IAD3:40 amWashington, D.C. Dulles Intl
6h 50m
1 stop
SJO8:30 amSan José Juan Santamaria Intl
May 19
SJO3:10 pmSan José Juan Santamaria Intl
9h 35m
1 stop
IAD2:45 amWashington, D.C. Dulles Intl
$272
Avianca
Feb 21
IAD3:00 amWashington, D.C. Dulles Intl
9h 25m
1 stop
SJO11:25 amSan José Juan Santamaria Intl
Feb 26
SJO6:00 amSan José Juan Santamaria Intl
9h 55m
2 stops
IAD4:55 pmWashington, D.C. Dulles Intl
$275
Avianca
Feb 21
IAD4:15 pmWashington, D.C. Dulles Intl
8h 15m
1 stop
SJO11:30 pmSan José Juan Santamaria Intl
Feb 25
SJO7:50 pmSan José Juan Santamaria Intl
6h 20m
1 stop
IAD3:10 amWashington, D.C. Dulles Intl
$277

American Airlines flights from Washington, D.C. Dulles Intl Airport to Costa Rica

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Costa Rica flight tickets
American Airlines
Apr 15
IAD8:11 pmWashington, D.C. Dulles Intl
17h 13m
2 stops
LIR11:24 amLiberia
Apr 20
LIR2:40 pmLiberia
26h 01m
2 stops
IAD6:41 pmWashington, D.C. Dulles Intl
$271
American Airlines
Apr 14
IAD7:26 pmWashington, D.C. Dulles Intl
18h 02m
1 stop
LIR11:28 amLiberia
Apr 29
LIR12:28 pmLiberia
9h 31m
1 stop
IAD11:59 pmWashington, D.C. Dulles Intl
$272
American Airlines
Mar 9
IAD5:00 amWashington, D.C. Dulles Intl
18h 43m
2 stops
SJO9:43 pmSan José Juan Santamaria Intl
Mar 18
SJO11:35 pmSan José Juan Santamaria Intl
18h 55m
2 stops
IAD8:30 pmWashington, D.C. Dulles Intl
$273

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated February 4, 2026.
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.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Wed 4/15

8:11 pm-11:24 am

2 stops17h 13m

Liberia

Mon 4/20

2:40 pm-6:41 pm

2 stops26h 01m

$271

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Tue 4/14

7:26 pm-11:28 am

1 stop18h 02m

Liberia

Wed 4/29

12:28 pm-11:59 pm

1 stop9h 31m

$272

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 3/9

4:00 am-8:40 am

1 stop6h 40m

San José Juan Santamaria Intl

Wed 3/18

3:05 pm-2:40 am

1 stop9h 35m

$273

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Thu 2/26

5:00 am-12:23 pm

1 stop8h 23m

Liberia

Mon 3/2

3:29 pm-10:53 pm

1 stop30h 24m

$273

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 2/22

4:15 pm-11:40 pm

1 stop8h 25m

San José Juan Santamaria Intl

Thu 2/26

6:00 am-4:55 pm

2 stops9h 55m

$275

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 2/17

1:30 am-7:45 am

1 stop7h 15m

San José Juan Santamaria Intl

Sat 2/28

5:00 pm-11:27 am

1 stop17h 27m

$276

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 3/1

1:07 pm-6:50 am

1 stop18h 43m

San José Juan Santamaria Intl

Wed 3/18

2:50 pm-12:27 pm

1 stop19h 37m

$278

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 2/28

3:35 pm-7:05 am

1 stop16h 30m

San José Juan Santamaria Intl

Fri 3/6

5:51 pm-3:15 am

1 stop8h 24m

$281

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Wed 2/18

6:03 am-1:10 pm

1 stop8h 07m

Liberia

Wed 3/4

8:35 am-10:16 pm

1 stop12h 41m

$281

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Sat 3/7

10:31 pm-11:55 am

1 stop14h 24m

Liberia

Wed 3/11

1:01 pm-11:59 pm

1 stop8h 58m

$286

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Costa Rica from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Costa Rica

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Costa Rica?

The cheapest month to fly to Costa Rica from Washington, D.C. Dulles Intl Airport is in October. Flight prices, which tend to average around $270, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in October, then September is your next best option. Flight prices from Washington, D.C. Dulles Intl Airport to Costa Rica during September average around $298.

What is the cheapest day to depart on your flight to Costa Rica?

According to our data, Tuesday is the cheapest day to fly to Costa Rica from Washington, D.C. Dulles Intl Airport. The lowest ticket price found for a Tuesday departure recently was $347. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $625. These prices are subject to change though, so be sure to set up a Price Alert for flights to Costa Rica.

What is the cheapest time of day to depart on your flight to Costa Rica?

In the evening is the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Costa Rica when you can find flight prices for as low as $384. Flying to Costa Rica in the evening is an ideal time because this is during off-peak travel hours. Flights to Costa Rica are more costly in the morning, with an average ticket price of $771. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington, D.C. Dulles Intl to Costa Rica flight route?

Fly from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl for the best Washington, D.C. Dulles Intl - Costa Rica flight prices

How far in advance should I book a flight to Costa Rica?

You are more likely to see cheaper flights to Costa Rica from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $364 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from Washington, D.C. Dulles Intl Airport for as low as $319 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to Costa Rica flights?

There are 2 cabin classes available to choose from on Washington, D.C. Dulles Intl to Costa Rica flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Costa Rica flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. Dulles Intl Airport to Costa Rica.

Cheap Washington, D.C. Dulles Intl Airport to Costa Rica flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Costa Rica

Best Price Found

$242

Fastest flight time

4h 55m

Direct flights

Mon, Tue, Wed, Fri and Sun

Airports in Costa Rica

40 airports
The best one-way flight to Costa Rica from Washington, D.C. Dulles Intl Airport in the past 72 hours is $242. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Costa Rica found on momondo in the last 72 hours is $353.
The fastest flight from Washington, D.C. Dulles Intl Airport to Costa Rica takes 4h 55m
Direct flights go from Washington, D.C. Dulles Intl Airport to Costa Rica on Monday, Tuesday, Wednesday, Friday and Sunday. There are no airlines offering direct flights.
There are 40 airports in Costa Rica. From Washington, D.C. Dulles Intl Airport there are direct flights to San José Juan Santamaria Intl (SJO).
Search flight deals

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Costa Rica?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Costa Rica are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Costa Rica?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Costa Rica?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Costa Rica.

  • What documentation or ID do you need to fly to Costa Rica?

    The necessary travel and health documents for your Costa Rica trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Costa Rica?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Costa Rica

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Costa Rica with momondo
Airline
Rating
Free Cancellation
Price
Volaris El SalvadorPriceFrom $102Free CancellationRating
7.4
29 reviews
Search Volaris El Salvador flights
DeltaPriceFrom $168Free CancellationRating
7.9
8,138 reviews
Search Delta flights
Copa AirlinesPriceFrom $210Free CancellationRating
7.5
1,559 reviews
Search Copa Airlines flights
United AirlinesPriceFrom $235Free CancellationRating
7.4
9,234 reviews
Search United Airlines flights
AviancaPriceFrom $236Free CancellationRating
6.5
2,497 reviews
Search Avianca flights
American AirlinesPriceFrom $237Free CancellationRating
7.2
11,215 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Costa Rica?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Costa Rica for you.

Can I find flights from Washington, D.C. to Costa Rica with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to Costa Rica flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Costa Rica?

momondo helps you find the best flight between Washington, D.C. and Costa Rica by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Costa Rica right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Costa Rica now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Costa Rica and let you know when they change.

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