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Cheap flights from Washington, D.C. Dulles Intl Airport to Costa Rica from $107

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 1/9. 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.
Avianca Logo
11:55 pm - 3:50 am
IAD
-
SJO
4h 55mnonstop
Avianca Logo
4:15 pm - 12:10 am
SJO
-
IAD
6h 55mnonstop
$239Avianca
Thu, Jan 22 - Tue, Jan 27
American Airlines Logo
5:46 pm - 12:43 pm
IAD
-
SJO
19h 57m2 stops
American Airlines Logo
6:38 am - 9:17 pm
SJO
-
IAD
13h 39m1 stop
$240American Airlines
Sun, Jan 18 - Sat, Feb 7
American Airlines Logo
5:32 pm - 1:05 pm
IAD
-
SJO
20h 33m2 stops
American Airlines Logo
7:45 am - 10:22 am
SJO
-
IAD
25h 37m2 stops
$242American Airlines
Tue, Feb 17 - Tue, Feb 24
Multiple Airlines Logo
11:55 pm - 3:50 am
IAD
-
SJO
4h 55mnonstop
Multiple Airlines Logo
3:12 pm - 11:43 am
SJO
-
IAD
19h 31m1 stop
$244Multiple Airlines
Sat, Jan 10 - Sat, Jan 17
American Airlines Logo
5:46 pm - 1:54 pm
IAD
-
SJO
21h 08m2 stops
American Airlines Logo
1:25 pm - 8:43 am
SJO
-
IAD
18h 18m2 stops
$245American Airlines
Sat, Feb 7 - Sun, Feb 15
Avianca Logo
4:15 pm - 8:40 am
IAD
-
SJO
17h 25m1 stop
Avianca Logo
5:10 pm - 10:35 pm
SJO
-
IAD
4h 25mnonstop
$247Avianca
Fri, Jan 23 - Sat, Jan 31
Avianca Logo
5:15 pm - 11:40 pm
IAD
-
SJO
8h 25m1 stop
Avianca Logo
4:15 pm - 1:10 am
SJO
-
IAD
6h 55m1 stop
$248Avianca
Mon, Mar 9 - Tue, Mar 17
Multiple Airlines Logo
2:07 pm - 8:19 pm
IAD
-
SJO
8h 12m1 stop
Multiple Airlines Logo
4:20 pm - 1:15 am
SJO
-
IAD
6h 55m1 stop
$249Multiple Airlines
Thu, Apr 9 - Mon, Apr 13
United Airlines Logo
10:28 pm - 12:55 pm
IAD
-
LIR
15h 27m1 stop
United Airlines Logo
8:35 am - 8:49 pm
LIR
-
IAD
11h 14m1 stop
$265United Airlines
Sat, Jan 10 - Sat, Jan 17
United Airlines Logo
6:03 am - 1:10 pm
IAD
-
LIR
8h 07m1 stop
United Airlines Logo
8:35 am - 10:18 pm
LIR
-
IAD
12h 43m1 stop
$281United Airlines
Sat, Jan 24 - Sat, Jan 31

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
Jan 22
IAD11:55 pmWashington, D.C. Dulles Intl
4h 55m
SJO3:50 amSan José Juan Santamaria Intl
Jan 27
SJO4:15 pmSan José Juan Santamaria Intl
6h 55m
IAD12:10 amWashington, D.C. Dulles Intl
$239
Find similar
Avianca
Jan 23
IAD4:15 pmWashington, D.C. Dulles Intl
17h 25m
1 stop
SJO8:40 amSan José Juan Santamaria Intl
Jan 31
SJO5:10 pmSan José Juan Santamaria Intl
4h 25m
IAD10:35 pmWashington, D.C. Dulles Intl
$247
Find similar
Avianca
Mar 9
IAD5:15 pmWashington, D.C. Dulles Intl
8h 25m
1 stop
SJO11:40 pmSan José Juan Santamaria Intl
Mar 17
SJO4:15 pmSan José Juan Santamaria Intl
6h 55m
1 stop
IAD1:10 amWashington, D.C. Dulles Intl
$248
Find similar

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
Jan 18
IAD5:46 pmWashington, D.C. Dulles Intl
19h 57m
2 stops
SJO12:43 pmSan José Juan Santamaria Intl
Feb 7
SJO6:38 amSan José Juan Santamaria Intl
13h 39m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
$240
Find similar
American Airlines
Feb 17
IAD5:32 pmWashington, D.C. Dulles Intl
20h 33m
2 stops
SJO1:05 pmSan José Juan Santamaria Intl
Feb 24
SJO7:45 amSan José Juan Santamaria Intl
25h 37m
2 stops
IAD10:22 amWashington, D.C. Dulles Intl
$242
Find similar
American Airlines
Feb 7
IAD5:46 pmWashington, D.C. Dulles Intl
21h 08m
2 stops
SJO1:54 pmSan José Juan Santamaria Intl
Feb 15
SJO1:25 pmSan José Juan Santamaria Intl
18h 18m
2 stops
IAD8:43 amWashington, D.C. Dulles Intl
$245
Find similar

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 December 11, 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

Fly to

Route

Depart

Return

Price

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 1/22

11:55 pm-3:50 am

Nonstop4h 55m

San José Juan Santamaria Intl

Tue 1/27

4:15 pm-12:10 am

Nonstop6h 55m

$239

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 1/18

5:46 pm-12:43 pm

2 stops19h 57m

San José Juan Santamaria Intl

Sat 2/7

6:38 am-9:17 pm

1 stop13h 39m

$240

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 2/17

5:32 pm-1:05 pm

2 stops20h 33m

San José Juan Santamaria Intl

Tue 2/24

7:45 am-10:22 am

2 stops25h 37m

$242

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 1/10

11:55 pm-3:50 am

Nonstop4h 55m

San José Juan Santamaria Intl

Sat 1/17

3:12 pm-11:43 am

1 stop19h 31m

$244

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 2/7

5:46 pm-1:54 pm

2 stops21h 08m

San José Juan Santamaria Intl

Sun 2/15

1:25 pm-8:43 am

2 stops18h 18m

$245

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 1/23

4:15 pm-8:40 am

1 stop17h 25m

San José Juan Santamaria Intl

Sat 1/31

5:10 pm-10:35 pm

Nonstop4h 25m

$247

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 3/9

5:15 pm-11:40 pm

1 stop8h 25m

San José Juan Santamaria Intl

Tue 3/17

4:15 pm-1:10 am

1 stop6h 55m

$248

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 4/9

2:07 pm-8:19 pm

1 stop8h 12m

San José Juan Santamaria Intl

Mon 4/13

4:20 pm-1:15 am

1 stop6h 55m

$249

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Sat 1/10

10:28 pm-12:55 pm

1 stop15h 27m

Liberia

Sat 1/17

8:35 am-8:49 pm

1 stop11h 14m

$265

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Sat 1/24

6:03 am-1:10 pm

1 stop8h 07m

Liberia

Sat 1/31

8:35 am-10:18 pm

1 stop12h 43m

$281

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 $295.

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 $362. 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 $664. 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?

At noon 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 $335. Flying to Costa Rica at noon 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 $787. 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 $373 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 $330 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.

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

$107

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 $107. 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 $265.
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. The only airline offering direct flights is Avianca.
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
DeltaPriceFrom $168Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Volaris El SalvadorPriceFrom $200Free CancellationRating
7.4
26 reviews
Search Volaris El Salvador flights
United AirlinesPriceFrom $235Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
American AirlinesPriceFrom $235Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
AviancaPriceFrom $243Free CancellationRating
6.6
2,480 reviews
Search Avianca flights
Copa AirlinesPriceFrom $245Free CancellationRating
7.6
1,558 reviews
Search Copa 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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