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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 9/29. 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

United Airlines Logo
10:05 pm - 12:10 pmIAD-LIR
16h 05m1 stop
United Airlines Logo
1:20 pm - 11:51 pmLIR-IAD
8h 31m1 stop
$245United Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
American Airlines Logo
5:29 pm - 2:13 pmIAD-LIR
21h 44m2 stops
American Airlines Logo
3:08 pm - 1:35 pmLIR-IAD
21h 27m2 stops
$249American Airlines
Find Deal
Wed, Nov 5 - Mon, Nov 10
American Airlines Logo
2:21 pm - 11:20 amIAD-LIR
22h 59m1 stop
American Airlines Logo
2:02 pm - 10:57 amLIR-IAD
18h 55m1 stop
$250American Airlines
Find Deal
Fri, Sep 26 - Mon, Sep 29
Avianca Logo
1:30 am - 7:45 amIAD-SJO
7h 15m1 stop
Avianca Logo
4:15 pm - 12:10 amSJO-IAD
6h 55m1 stop
$257Avianca
Find Deal
Tue, Feb 17 - Tue, Feb 24
Avianca Logo
4:05 am - 11:15 amIAD-SJO
9h 10m1 stop
Avianca Logo
4:20 pm - 1:15 amSJO-IAD
6h 55m1 stop
$259Avianca
Find Deal
Tue, Oct 7 - Mon, Oct 13
Copa Airlines Logo
4:34 pm - 8:19 amIAD-SJO
17h 45m1 stop
Copa Airlines Logo
9:17 am - 4:20 amSJO-IAD
17h 03m2 stops
$260Copa Airlines
Find Deal
Mon, Sep 15 - Thu, Sep 18
Copa Airlines Logo
1:13 am - 9:59 amIAD-SJO
9h 46m1 stop
Copa Airlines Logo
10:08 am - 3:22 amSJO-IAD
16h 14m1 stop
$261Copa Airlines
Find Deal
Fri, Nov 7 - Mon, Nov 17
Delta Logo
7:01 am - 12:40 pmIAD-LIR
6h 39m1 stop
Delta Logo
2:05 pm - 12:18 amLIR-IAD
9h 13m1 stop
$285Delta
Find Deal
Thu, Nov 13 - Thu, Nov 20
Delta Logo
7:01 am - 12:40 pmIAD-LIR
6h 39m1 stop
Delta Logo
2:05 pm - 12:18 amLIR-IAD
9h 13m1 stop
$295Delta
Find Deal
Thu, Nov 13 - Thu, Nov 20
Volaris El Salvador Logo
1:23 am - 12:22 pmIAD-SJO
11h 59m1 stop
Volaris El Salvador Logo
4:17 pm - 11:27 amSJO-IAD
18h 10m1 stop
$296Volaris El Salvador
Find Deal
Tue, Jan 6 - Fri, Jan 16

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
Feb 17
IAD1:30 amWashington, D.C. Dulles Intl
7h 15m
1 stop
SJO7:45 amSan José Juan Santamaria Intl
Feb 24
SJO4:15 pmSan José Juan Santamaria Intl
6h 55m
1 stop
IAD12:10 amWashington, D.C. Dulles Intl
$257
Find similar
Avianca
Oct 7
IAD4:05 amWashington, D.C. Dulles Intl
9h 10m
1 stop
SJO11:15 amSan José Juan Santamaria Intl
Oct 13
SJO4:20 pmSan José Juan Santamaria Intl
6h 55m
1 stop
IAD1:15 amWashington, D.C. Dulles Intl
$259
Find similar
Avianca
Sep 8
IAD4:05 amWashington, D.C. Dulles Intl
6h 35m
1 stop
SJO8:40 amSan José Juan Santamaria Intl
Sep 13
SJO7:45 pmSan José Juan Santamaria Intl
6h 35m
1 stop
IAD4:20 amWashington, D.C. Dulles Intl
$260
Find similar

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

Our best Copa Airlines deals on Washington, D.C. Dulles Intl Airport to Costa Rica flight tickets
Copa Airlines
Sep 15
IAD4:34 pmWashington, D.C. Dulles Intl
17h 45m
1 stop
SJO8:19 amSan José Juan Santamaria Intl
Sep 18
SJO9:17 amSan José Juan Santamaria Intl
17h 03m
2 stops
IAD4:20 amWashington, D.C. Dulles Intl
$260
Find similar
Copa Airlines
Nov 7
IAD1:13 amWashington, D.C. Dulles Intl
9h 46m
1 stop
SJO9:59 amSan José Juan Santamaria Intl
Nov 17
SJO10:08 amSan José Juan Santamaria Intl
16h 14m
1 stop
IAD3:22 amWashington, D.C. Dulles Intl
$261
Find similar
Copa Airlines
Sep 18
IAD2:25 amWashington, D.C. Dulles Intl
16h 27m
3 stops
SJO4:52 pmSan José Juan Santamaria Intl
Sep 26
SJO10:05 amSan José Juan Santamaria Intl
16h 15m
1 stop
IAD4:20 amWashington, D.C. Dulles Intl
$271
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 August 27, 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.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Sat 9/20

10:05 pm-12:10 pm

1 stop16h 05m

Liberia

Sat 9/27

1:20 pm-11:51 pm

1 stop8h 31m

$245

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Wed 11/5

5:29 pm-2:13 pm

2 stops21h 44m

Liberia

Mon 11/10

3:08 pm-1:35 pm

2 stops21h 27m

$249

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Fri 9/26

2:21 pm-11:20 am

1 stop22h 59m

Liberia

Mon 9/29

2:02 pm-10:57 am

1 stop18h 55m

$250

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

Tue 2/24

4:15 pm-12:10 am

1 stop6h 55m

$257

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 10/7

4:05 am-11:15 am

1 stop9h 10m

San José Juan Santamaria Intl

Mon 10/13

4:20 pm-1:15 am

1 stop6h 55m

$259

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 9/15

4:34 pm-8:19 am

1 stop17h 45m

San José Juan Santamaria Intl

Thu 9/18

9:17 am-4:20 am

2 stops17h 03m

$260

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 11/7

1:13 am-9:59 am

1 stop9h 46m

San José Juan Santamaria Intl

Mon 11/17

10:08 am-3:22 am

1 stop16h 14m

$261

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Thu 11/13

7:01 am-12:40 pm

1 stop6h 39m

Liberia

Thu 11/20

2:05 pm-12:18 am

1 stop9h 13m

$285

Washington, D.C.Liberia

IAD - LIR

IADLIR

Washington, D.C. Dulles Intl

Thu 11/13

7:01 am-12:40 pm

1 stop6h 39m

Liberia

Thu 11/20

2:05 pm-12:18 am

1 stop9h 13m

$295

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 1/6

1:23 am-12:22 pm

1 stop11h 59m

San José Juan Santamaria Intl

Fri 1/16

4:17 pm-11:27 am

1 stop18h 10m

$296

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 September. Flight prices, which tend to average around $307, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in September, then May is your next best option. Flight prices from Washington, D.C. Dulles Intl Airport to Costa Rica during May average around $334.

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 $371. 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 $681. 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 $775. 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 $395 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 $350 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?

You could potentially save up to 2% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Costa Rica flight.

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

$201

Fastest flight time

4h 40m

Direct flights

Mon, Tue, Wed, Fri and Sun

Airports in Costa Rica

1 airport
The best one-way flight to Costa Rica from Washington, D.C. Dulles Intl Airport in the past 72 hours is $201. 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 $354.
The fastest flight from Washington, D.C. Dulles Intl Airport to Costa Rica takes 4h 40m
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 is 1 airport near Costa Rica: 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 $174Free CancellationRating
7.9
7,977 reviews
Search Delta flights
Volaris El SalvadorPriceFrom $200Free CancellationRating
7.4
26 reviews
Search Volaris El Salvador flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
8,945 reviews
Search United Airlines flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Copa AirlinesPriceFrom $259Free CancellationRating
7.5
1,515 reviews
Search Copa Airlines flights
AviancaPriceFrom $259Free CancellationRating
6.7
2,419 reviews
Search Avianca 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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