San José

$119+ 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
Dec 12 — Dec 191
We work with more than 300 partners to bring you better travel deals

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

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 2 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap 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 November 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$240
(American Airlines)

One-way from

$119
(American Airlines)

Popular in

April

Cheapest in

October

Average price

$371

Good round-trip deal

$297 or less

Good one-way deal

$164 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-San José Juan Santamaria Intl flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-San José Juan Santamaria Intl flights.
From Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
One-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
Highest demand for flights based on searches. 11% potential increase in price ($46 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Average for round-trip flights in November 2025
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.

Find 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 November 12, 2025.

This Mytrip deal was found by Cheapflights users on 11/12. 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.
Mon 12/811:55 pmIAD - SJO
Nonstop4h 55mAvianca
Thu 12/115:10 pmSJO - IAD
Nonstop4h 25mAvianca
Deal found 11/12$247
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:45 amIAD - SJO
2 stops31h 40mMultiple Airlines
Tue 12/165:10 pmSJO - IAD
Nonstop4h 25mMultiple Airlines
Deal found 11/10$251
This American Airlines deal was found by Cheapflights users on 11/10. 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.
Mon 11/245:29 pmIAD - SJO
2 stops19h 42mAmerican Airlines
Thu 11/271:11 pmSJO - IAD
2 stops29h 09mAmerican Airlines
Deal found 11/10$252
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/911:55 pmIAD - SJO
Nonstop4h 55mAvianca
Sat 12/135:10 pmSJO - IAD
Nonstop4h 25mAvianca
Deal found 11/11$253
This Avianca deal was found by Cheapflights users on 11/11. 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.
Sat 12/611:55 pmIAD - SJO
Nonstop4h 55mAvianca
Thu 12/115:10 pmSJO - IAD
Nonstop4h 25mAvianca
Deal found 11/11$254
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:45 amIAD - SJO
1 stop9h 07mMultiple Airlines
Wed 12/107:50 pmSJO - IAD
1 stop6h 20mMultiple Airlines
Deal found 11/10$255
This Cheapflightsfares deal was found by Cheapflights users on 11/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:55 pmIAD - SJO
Nonstop4h 55mAvianca
Tue 12/95:10 pmSJO - IAD
Nonstop4h 25mAvianca
Deal found 11/10$259
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:55 pmIAD - SJO
Nonstop4h 55mMultiple Airlines
Sat 12/133:07 pmSJO - IAD
1 stop30h 58mMultiple Airlines
Deal found 11/10$260
This United Airlines deal was found by Cheapflights users on 11/11. 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 11/158:57 amIAD - SJO
Nonstop4h 58mUnited Airlines
Sat 11/222:30 pmSJO - IAD
Nonstop4h 43mUnited Airlines
Deal found 11/11$261
This Mytrip deal was found by Cheapflights users on 11/9. 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.
Tue 11/114:30 amIAD - SJO
1 stop7h 55mAvianca
Mon 11/174:30 pmSJO - IAD
1 stop9h 40mAvianca
Deal found 11/9$264

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 November 12, 2025.
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

Dulles Intl

Fly to

San José

Route

Depart

Return

Price

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 11/15

3:24 pm-8:19 am

1 stop17h 55m

San José Juan Santamaria Intl

Wed 11/26

6:07 pm-3:22 am

1 stop8h 15m

$282

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 2/3

1:18 am-10:00 am

1 stop9h 42m

San José Juan Santamaria Intl

Mon 2/9

9:17 am-3:15 am

3 stops16h 58m

$287

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 2/1

1:18 am-4:46 pm

3 stops16h 28m

San José Juan Santamaria Intl

Thu 2/5

2:54 pm-3:15 am

1 stop11h 21m

$329

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 2/4

1:18 am-4:46 pm

2 stops16h 28m

San José Juan Santamaria Intl

Sun 2/8

10:08 am-3:15 am

1 stop16h 07m

$329

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 2/4

1:18 am-4:46 pm

2 stops16h 28m

San José Juan Santamaria Intl

Tue 2/10

10:08 am-3:15 am

1 stop16h 07m

$329

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 12/8

1:13 am-8:19 am

1 stop8h 06m

San José Juan Santamaria Intl

Sun 12/14

2:53 pm-11:33 pm

1 stop7h 40m

$336

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 12/10

1:13 am-7:10 am

1 stop6h 57m

San José Juan Santamaria Intl

Thu 12/18

6:07 pm-3:22 am

1 stop8h 15m

$336

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 12/10

3:32 pm-7:10 am

1 stop16h 38m

San José Juan Santamaria Intl

Sun 12/14

5:53 pm-3:22 am

1 stop8h 29m

$336

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 11/28

1:13 am-7:33 am

1 stop7h 20m

San José Juan Santamaria Intl

Fri 12/5

4:08 am-2:02 pm

1 stop8h 54m

$339

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 11/27

3:24 pm-8:19 am

1 stop17h 55m

San José Juan Santamaria Intl

Tue 12/2

6:07 pm-3:22 am

1 stop8h 15m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Showing 1-10 of 20 results
1
2

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust 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 Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Washington, D.C. Dulles Intl Airport-San José flight deals on Cheapflights vs. Justfly.com >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 Justfly.com the most. Justfly.com 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?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to San José. Price data was last updated on November 7, 2025.

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 2 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José (average of $152). Flying from Washington, D.C. Dulles Intl Airport to San José in February is currently the most expensive (average of $264). 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 November 12, 2025.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to San José is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 57% on airfare.

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 November 12, 2025.
Read reviews from past customers who have flown Copa Airlines, Volaris El Salvador, and United 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.

Overall

7.6

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

PEI - PTY

The attention to us was excellent. Help was provided with care.

Overall

7.6

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

PEI - PTY

The attention to us was excellent. Help was provided with care.
Volaris El Salvador
7.4
Good

Overall

7.6

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

PEI - PTY

The attention to us was excellent. Help was provided with care.

Overall

7.6

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

PEI - PTY

The attention to us was excellent. Help was provided with care.

Overall

7.6

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

PEI - PTY

The attention to us was excellent. Help was provided with care.

Overall

7.6

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.9

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

PEI - PTY

The attention to us was excellent. Help was provided with care.

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 can get you from Washington, D.C. Dulles Intl Airport to San José in just under 17h 55m. Your travel time can differ by up to . The distance from Washington, D.C. Dulles Intl Airport to San José is about 2042 mi.

  • 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 $200 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $235 and $237 round-trip. Users have found that Volaris El Salvador is 47% cheaper than the other options available to this destination.

  • 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 $137. While the most popular route (Washington, D.C. Dulles Intl - San José Juan Santamaria Intl) can be booked for $224 on average, our data indicates $350 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?

  • What are some popular things to do or see while on a layover in Panama City?

    Panama City travelers tend to visit Panama Old Cathedral, Amador Causeway, and Panama Canal more than anywhere else. Panama Old Cathedral, Amador Causeway, and Panama Canal are located about 13.2 mi, 14.7 mi, and 15.1 mi, respectively from Panama City Tocumen Intl. Travelers can rent a car at Panama City Tocumen Intl for an average daily rate of $9 to make sightseeing during their layover a little easier.

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

  • 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José (average of $152). Flying from Washington, D.C. Dulles Intl Airport to San José in February is currently the most expensive (average of $264). 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
Heredia
Manuel Antonio
Alajuela
Monteverde
Jacó
Dominical

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to San José

See prices for flight routes from nearby airports that may be better suited for you.

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 November 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Volaris El SalvadorCheapest$200Average$291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$235Average$619FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$237Average$490FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$245Average$366FlexibilityNo cancel feeOn-time70%
AviancaCheapest$256Average$391FlexibilityNo cancel feeOn-time71%
DeltaCheapest$285Average$483FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.