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$107+ 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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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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 September or October, booked 80 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 April 25, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$257
(Cheapflightsfares)

One-way from

$107
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$485

Good round-trip deal

$335 or less

Good one-way deal

$135 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-San José Juan Santamaria Intl flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-San José Juan Santamaria Intl flights.
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From Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
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One-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
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Highest demand for flights based on searches. 17% potential increase in price ($86 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.
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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 April 25, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/24. 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.
Tue 6/32:35 amIAD - SJO
1 stop7h 05mAvianca
Sat 6/145:10 pmSJO - IAD
Nonstop4h 35mAvianca
Deal found 4/24$257
This CheapOair deal was found by Cheapflights users on 4/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/242:00 pmIAD - SJO
1 stop24h 22mVolaris El Salvador
Sun 6/2911:15 amSJO - IAD
1 stop10h 55mVolaris El Salvador
Deal found 4/25$258
This Copa Airlines deal was found by Cheapflights users on 4/25. 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.
Sun 5/184:34 pmIAD - SJO
1 stop17h 01mCopa Airlines
Sat 5/2410:57 amSJO - IAD
1 stop15h 23mCopa Airlines
Deal found 4/25$259
This CheapOair deal was found by Cheapflights users on 4/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/172:22 amIAD - SJO
1 stop19h 57mMultiple Airlines
Sun 10/264:17 pmSJO - IAD
1 stop18h 05mMultiple Airlines
Deal found 4/25$260
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Mon 6/210:32 pmIAD - SJO
1 stop13h 39mUnited Airlines
Wed 6/117:55 amSJO - IAD
1 stop14h 03mUnited Airlines
Deal found 4/25$266
This American Airlines deal was found by Cheapflights users on 4/23. 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 4/256:18 amIAD - SJO
1 stop9h 01mAmerican Airlines
Mon 4/282:10 pmSJO - IAD
1 stop16h 28mAmerican Airlines
Deal found 4/23$274

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 April 25, 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

Tue 6/3

2:35 am-7:40 am

1 stop7h 05m

San José Juan Santamaria Intl

Sat 6/14

5:10 pm-11:45 pm

Nonstop4h 35m

$257

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 6/24

2:00 pm-12:22 pm

1 stop24h 22m

San José Juan Santamaria Intl

Sun 6/29

11:15 am-12:10 am

1 stop10h 55m

$258

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 5/18

2:21 am-9:59 am

1 stop9h 38m

San José Juan Santamaria Intl

Tue 6/3

5:52 am-3:04 pm

1 stop7h 12m

$259

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 5/16

2:21 am-7:35 am

1 stop7h 14m

San José Juan Santamaria Intl

Fri 5/30

11:32 am-10:17 am

1 stop20h 45m

$261

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 6/2

10:32 pm-10:11 am

1 stop13h 39m

San José Juan Santamaria Intl

Wed 6/11

7:55 am-11:58 pm

1 stop14h 03m

$266

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 5/8

6:17 am-10:17 pm

1 stop18h 00m

San José Juan Santamaria Intl

Tue 5/13

12:27 pm-8:38 am

2 stops18h 11m

$278

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 6/8

2:35 am-9:20 am

1 stop8h 45m

$107

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 5/3

2:21 am-8:20 am

1 stop7h 59m

$108

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 6/3

8:02 pm-12:50 pm

2 stops18h 48m

$110

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 7/1

2:22 am-12:22 pm

1 stop12h 00m

$112

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 15 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 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, San José Province flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C. Dulles Intl Airport-San José, San José Province flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San José, San José Province 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, San José Province flights, Cheapflights users trust AranGrant the most. AranGrant 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, San José Province 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, San José Province?

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 April 25, 2025.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to San José, San José Province may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José, San José Province (average of $398). Flying from Washington, D.C. Dulles Intl Airport to San José, San José Province in March is currently the most expensive (average of $555). 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 April 25, 2025.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to San José, San José Province 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.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to San José, San José Province?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to San José. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to San José, San José Province flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in San José by month

Plan your trip to San José by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San José, San José Province ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit San José, San José Province when rainfall is around 0.0 in.

Temperature in San José by month

Plan your trip to San José by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San José, San José Province, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

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 April 25, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Copa Airlines and United Airlines from Washington, D.C. to San José by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,927 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,927 reviews
Alaska Airlines
8.0
Very good
9,927 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Copa Airlines
7.6
Good
1,411 reviews
Alaska Airlines
8.0
Very good
9,927 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,685 reviews
Alaska Airlines
8.0
Very good
9,927 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,927 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

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

    Flying on Avianca is currently your cheapest option to San José, San José Province, with prices starting at $257. Additional round-trip tickets that might be worth considering are offered by Volaris El Salvador and Copa Airlines, with the lowest prices starting at $258 and $259, respectively. You may be able to fly from Washington, D.C. Dulles Intl Airport to San José, San José Province for 35% less than the average price by searching for these airlines.

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

    $107 is the cheapest one-way deal found within the past few days, from Avianca. You may also be able to find cheap deals on Copa Airlines and American Airlines, with prices starting from $108 and $110, respectively.

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

    Looking at all options, your cheapest flight can be booked for $110. While the most popular route (Washington, D.C. Dulles Intl - San José Juan Santamaria Intl) can be booked for $217 on average our data indicates $303 when flying from Washington, D.C. Dulles Intl Airport to San José, San José Province.

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

    The most popular layover on flights from Washington, D.C. Dulles Intl Airport to San José, San José Province is Panama City. San Salvador is the second most popular location for layovers on flights from Washington, D.C. Dulles Intl Airport to San José, San José Province.

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

    If you're on a layover in Panama City and looking for things to do, consider visiting Panama Old Cathedral, Amador Causeway, or Panama Canal. Panama Old Cathedral, Amador Causeway, and Panama Canal can be visited by traveling about 13.2 mi, 14.7 mi, and 15.1 mi respectively from Panama City Tocumen Intl. Those on a layover in Panama City in need of a rental car can book one at Panama City Tocumen Intl for about $13.

  • What are some popular points of interest to see during a layover in San Salvador?

    Centro Historico de San Salvador, Catedral Metropolitana de San Salvador, and Monsenor Romero Center are currently the most popular points of interest in San Salvador at the moment. Centro Historico de San Salvador, Catedral Metropolitana de San Salvador, and Monsenor Romero Center can be visited by traveling about 19.7 mi, 19.7 mi, and 20.1 mi respectively from San Salvador El Salvador Intl. Travelers can rent a car at San Salvador El Salvador Intl for an average daily rate of $28 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, San José Province flights?

    Of the flights from Washington, D.C. Dulles Intl Airport to San José, San José Province that have layovers, the fewest flights stop in Guatemala City.

  • 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, San José Province?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José, San José Province (average of $398). Flying from Washington, D.C. Dulles Intl Airport to San José, San José Province in March is currently the most expensive (average of $555). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Heredia
Manuel Antonio
Alajuela
Monteverde
Jacó

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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
Reagan-National 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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Volaris El SalvadorCheapest$200Average$291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$211Average$666FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$217Average$316FlexibilityNo cancel feeOn-time71%
AviancaCheapest$242Average$383FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$487FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$276Average$413FlexibilityNo cancel feeOn-time70%

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