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San José

$154+ Cheap flights from Dulles Intl (IAD) to San José (SJO)

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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
Jun 6 — Jun 131
Sat 6/6
Sat 6/13
1 adult, Economy
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Find cheap flights from Dulles Intl to San José with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl are usually found in October or September, booked 51 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Dulles Intl to San José

Cheapest flights from Dulles Intl to San José
Explore the most affordable flight options available from Dulles Intl to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2026.

This Avianca deal was found by Cheapflights users on 5/7. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:50 am
IAD
-
SJO
2 stops14h 00m
Avianca
Wed 7/154:35 pm
SJO
-
IAD
2 stops9h 45m
Avianca
Deal found 5/7$330
This Delta deal was found by Cheapflights users on 5/5. 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.
Tue 10/67:00 am
IAD
-
SJO
1 stop6h 58m
Delta
Wed 10/71:23 pm
SJO
-
IAD
1 stop8h 42m
Delta
Deal found 5/5$341
This Copa Airlines deal was found by Cheapflights users on 5/6. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:21 am
IAD
-
SJO
1 stop8h 00m
Copa Airlines
Sun 5/108:14 am
SJO
-
IAD
1 stop18h 07m
Copa Airlines
Deal found 5/6$344
This American Airlines deal was found by Cheapflights users on 5/6. 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.
Sun 8/306:33 am
IAD
-
SJO
1 stop7h 53m
American Airlines
Thu 9/31:29 pm
SJO
-
IAD
1 stop8h 18m
American Airlines
Deal found 5/6$350
This Expedia deal was found by Cheapflights users on 5/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/201:38 pm
IAD
-
SJO
1 stop20h 42m
Frontier
Mon 8/249:35 am
SJO
-
IAD
1 stop25h 18m
Frontier
Deal found 5/7$352
This American Airlines deal was found by Cheapflights users on 5/5. 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.
Fri 5/88:11 pm
IAD
-
SJO
2 stops18h 53m
American Airlines
Tue 5/126:30 am
SJO
-
IAD
2 stops24h 19m
American Airlines
Deal found 5/5$355
This American Airlines deal was found by Cheapflights users on 5/3. 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.
Tue 6/28:22 pm
IAD
-
SJO
2 stops17h 28m
American Airlines
Tue 6/93:08 pm
SJO
-
IAD
2 stops26h 25m
American Airlines
Deal found 5/3$356
This American Airlines deal was found by Cheapflights users on 5/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:10 am
IAD
-
SJO
1 stop9h 42m
American Airlines
Mon 8/311:29 pm
SJO
-
IAD
1 stop29h 29m
American Airlines
Deal found 5/4$357
This Copa Airlines deal was found by Cheapflights users on 5/7. 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.
Fri 5/154:38 pm
IAD
-
SJO
1 stop16h 31m
Copa Airlines
Thu 5/2110:05 am
SJO
-
IAD
1 stop16h 16m
Copa Airlines
Deal found 5/7$358
This Copa Airlines deal was found by Cheapflights users on 5/7. 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.
Wed 6/34:38 pm
IAD
-
SJO
1 stop17h 43m
Copa Airlines
Wed 6/1710:05 am
SJO
-
IAD
1 stop16h 16m
Copa Airlines
Deal found 5/7$359
This American Airlines deal was found by Cheapflights users on 5/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:38 pm
IAD
-
SJO
2 stops19h 48m
American Airlines
Wed 8/196:00 am
SJO
-
IAD
2 stops24h 41m
American Airlines
Deal found 5/4$360
This American Airlines deal was found by Cheapflights users on 5/5. 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.
Thu 5/76:25 am
IAD
-
SJO
2 stops17h 11m
American Airlines
Thu 5/1412:35 pm
SJO
-
IAD
1 stop28h 50m
American Airlines
Deal found 5/5$361

Find flight deals from Dulles Intl to San José

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to San José (SJO). 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 May 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$341
(Delta)

One-way from

$154
(United Airlines)

Popular in

December

Cheapest in

October

Average price

$354

Good round-trip deal

$341 or less

Good one-way deal

$153 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-San José Juan Santamaria Intl flights.
Search Deals
From Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
Search Deals
One-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to San José 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 May 7, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 10/17

2:25 am-8:19 am

1 stop7h 54m

San José Juan Santamaria Intl

Sat 10/24

6:17 pm-4:20 am

1 stop8h 03m

$344

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 6/4

4:38 pm-8:21 am

1 stop17h 43m

San José Juan Santamaria Intl

Thu 6/11

2:59 pm-4:21 am

1 stop11h 22m

$344

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 6/4

4:38 pm-8:21 am

1 stop17h 43m

San José Juan Santamaria Intl

Sun 6/7

6:19 pm-4:21 am

1 stop8h 02m

$344

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 11/3

3:25 pm-7:06 am

1 stop16h 41m

San José Juan Santamaria Intl

Wed 11/11

10:08 am-11:30 pm

1 stop12h 22m

$344

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 9/8

6:15 am-11:38 am

1 stop7h 23m

San José Juan Santamaria Intl

Tue 9/15

1:25 pm-12:29 am

1 stop9h 04m

$350

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 9/23

6:30 am-12:21 pm

1 stop7h 51m

San José Juan Santamaria Intl

Wed 9/30

12:44 pm-10:59 pm

1 stop8h 15m

$355

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 5/30

4:38 pm-7:09 am

1 stop16h 31m

San José Juan Santamaria Intl

Sat 6/6

5:57 pm-4:21 am

1 stop8h 24m

$358

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 6/5

4:38 pm-9:06 am

1 stop18h 28m

San José Juan Santamaria Intl

Sun 6/7

5:47 am-4:21 am

1 stop20h 34m

$358

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 10/30

4:25 pm-8:21 am

1 stop17h 56m

San José Juan Santamaria Intl

Mon 11/2

6:08 pm-3:13 am

1 stop8h 05m

$373

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 5/25

2:21 am-10:00 am

1 stop9h 39m

San José Juan Santamaria Intl

Sun 5/31

4:10 am-3:05 pm

1 stop8h 55m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/2

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Dulles Intl to San José

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to San José in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San José flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-San José flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San José flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San José flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-San José flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to San José

Have a flexible travel schedule? Discover the best time to fly to San José 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 San José

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to San José?

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to San José, you should look to book at least 4 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José (average of $270). Flying from Washington, D.C. Dulles Intl Airport to San José in December is currently the most expensive (average of $435). 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 SJO?

Find hourly flight availability from Dulles Intl to San José. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 7, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to San José as you normally would.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to San José?

Reviews of airlines servicing San José

Get insights into the airlines that provide service to San José. 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 San José. Reviews last updated May 7, 2026.
Read reviews from past customers who have flown Delta,Copa Airlines, andUnited Airlines from Washington, D.C. Dulles Intl Airport to San José. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,459 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
Delta
7.9
Good
8,459 reviews
Delta
7.9
Good
8,459 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
Copa Airlines
7.5
Good
1,582 reviews
Delta
7.9
Good
8,459 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
United Airlines
7.4
Good
9,692 reviews
Delta
7.9
Good
8,459 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
American Airlines
7.1
Good
11,670 reviews
Delta
7.9
Good
8,459 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
Avianca
6.5
Okay
2,523 reviews
Delta
7.9
Good
8,459 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to San José. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San José from Washington, D.C. Dulles Intl?

    Most people fly into San José Juan Santamaria Intl (SJO) if they book a flight to San José from Washington, D.C. Dulles Intl. On average, Juan Santamaria Intl has 0 inbound flights from Washington, D.C. Dulles Intl per day from 6 airlines. San José Juan Santamaria Intl is conveniently located just 8.8 mi from San José’s city center.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to San José?

    Copa Airlines and United Airlines can get you from Washington, D.C. Dulles Intl Airport to San José in just under 7h 23m. Your travel time can differ by up to 31m. The distance from Washington, D.C. Dulles Intl Airport to San José is about 2042 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to San José round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to San José is Volaris El Salvador. Our recent data shows that you can find tickets from as low as $102 on this airline. Additional options worth looking into are Delta and Copa Airlines, starting at $168 and $169 round-trip. Users have found that Volaris El Salvador is 71% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to San José one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to San José are American Airlines ($100), United Airlines ($101), and Avianca ($107).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to San José?

    Looking at all options, your cheapest flight can be booked for $129. While the most popular route (Washington, D.C. Dulles Intl - San José Juan Santamaria Intl) can be booked for $344 on average, our data indicates $301 when flying from Washington, D.C. Dulles Intl Airport to San José.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to San José?

    Of the flights from Washington, D.C. Dulles Intl Airport to San José that have layovers, most of them stop in San Salvador.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to San José flights?

    Washington, D.C. Dulles Intl Airport to San José flights have a layover in Panama City the least frequently.

  • Can I find deals for flights from Dulles Intl to San José that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to San José flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to San José?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to San José.

  • Can I find deals for business class flights from Dulles Intl to San José?

    Yes. Cheapflights offers flight deals from Dulles Intl to San José 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 San José?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José (average of $270). Flying from Washington, D.C. Dulles Intl Airport to San José in December is currently the most expensive (average of $435). 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

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Alajuela
Monteverde
Jacó
Heredia
Dominical
Manuel Antonio

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Alternative routes for Dulles Intl to San José

See prices for flight routes from nearby airports that may be better suited for you.
Baltimore to San José flights
Reagan-National to San José flights
Dulles Intl to Liberia flights
Baltimore to Liberia flights

Top 6 airlines flying from Dulles Intl to San José

Discover the top 6 airlines that operate flights from Dulles Intl to San José. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
Volaris El SalvadorCheapest$102Average$299FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$168Average$454FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$169Average$342FlexibilityNo cancel feeOn-time70%
AviancaCheapest$235Average$363FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$235Average$511FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$240Average$412FlexibilityNo cancel feeOn-time71%

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