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Dulles Intl

$151+ Cheap flights from San José (SJO) to Dulles Intl (IAD)

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 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — IAD
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl are usually found in October or November, booked 67 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from San José to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from San José (SJO) to Dulles Intl (IAD). 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$238
(Trip.com)

One-way from

$151
(Cheapflightsfares)

Popular in

March

Cheapest in

October

Average price

$403

Good round-trip deal

$701 or less

Good one-way deal

$290 or less
Provider with most accurate pricing for San José Juan Santamaria Intl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Washington, D.C. Dulles Intl flights.
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From San José Juan Santamaria Intl to Washington, D.C. Dulles Intl
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One-way flight from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 6% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl.
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Find flight deals from San José to Dulles Intl

Cheapest flights from San José to Dulles Intl
Explore the most affordable flight options available from San José to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Trip.com deal was found by Cheapflights users on 3/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/411:15 amSJO - IAD
1 stop23h 05mVolaris El Salvador
Sat 5/102:00 pmIAD - SJO
1 stop22h 14mVolaris El Salvador
Deal found 3/25$238
This CheapOair deal was found by Cheapflights users on 3/27. 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.
Mon 6/3011:15 amSJO - IAD
1 stop23h 07mMultiple Airlines
Tue 7/82:05 pmIAD - SJO
1 stop8h 14mMultiple Airlines
Deal found 3/27$240
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Thu 3/278:05 amSJO - IAD
1 stop10h 07mUnited Airlines
Mon 4/710:12 pmIAD - SJO
1 stop23h 25mUnited Airlines
Deal found 3/26$245
This Cheapflightsfares deal was found by Cheapflights users on 3/26. 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 5/134:20 pmSJO - IAD
1 stop6h 55mAvianca
Tue 5/272:35 amIAD - SJO
1 stop7h 05mAvianca
Deal found 3/26$260
This Delta deal was found by Cheapflights users on 3/26. 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.
Wed 4/21:21 pmSJO - IAD
1 stop9h 10mDelta
Mon 4/76:00 amIAD - SJO
1 stop7h 54mDelta
Deal found 3/26$266
This American Airlines deal was found by Cheapflights users on 3/27. 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 8/202:45 pmSJO - IAD
1 stop15h 59mAmerican Airlines
Wed 8/277:07 amIAD - SJO
1 stop8h 13mAmerican Airlines
Deal found 3/27$268
This Copa Airlines deal was found by Cheapflights users on 3/26. 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.
Thu 4/1710:05 amSJO - IAD
1 stop16h 15mCopa Airlines
Thu 4/244:31 pmIAD - SJO
1 stop17h 50mCopa Airlines
Deal found 3/26$296

Cheapflights Fare Finder

Customize your flight search to find flights from San José to Dulles Intl 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 March 28, 2025.
Use the filters below to find and compare flights from San José to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

San José

Fly to

Dulles Intl

Route

Depart

Return

Price

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Sun 5/4

11:15 am-12:20 pm

1 stop23h 05m

Washington, D.C. Dulles Intl

Sat 5/10

2:00 pm-10:14 am

1 stop22h 14m

$238

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Mon 6/30

11:15 am-12:22 pm

1 stop23h 07m

Washington, D.C. Dulles Intl

Tue 7/8

2:05 pm-8:19 pm

1 stop8h 14m

$240

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 5/21

1:30 pm-11:58 pm

1 stop8h 28m

Washington, D.C. Dulles Intl

Mon 5/26

6:10 am-10:39 pm

1 stop18h 29m

$251

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Tue 5/13

4:20 pm-1:15 am

1 stop6h 55m

Washington, D.C. Dulles Intl

Tue 5/27

2:35 am-7:40 am

1 stop7h 05m

$260

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 8/20

2:45 pm-8:44 am

1 stop15h 59m

Washington, D.C. Dulles Intl

Wed 8/27

7:07 am-1:20 pm

1 stop8h 13m

$268

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Thu 4/17

10:05 am-4:20 am

1 stop16h 15m

Washington, D.C. Dulles Intl

Thu 4/24

4:31 pm-8:21 am

1 stop17h 50m

$296

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Tue 6/17

5:10 pm-11:45 pm

Nonstop4h 35m

$151

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Sun 6/1

2:15 pm-1:22 pm

2 stops21h 07m

$152

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Mon 8/11

4:17 pm-12:22 pm

1 stop18h 05m

$155

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 4/2

1:21 pm-12:31 am

1 stop9h 10m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 15 results
1
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Compare providers for flights from San José to Dulles Intl

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 San José to Dulles Intl in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice 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 San José, San José Province-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San José, San José Province-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San José, San José Province-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San José, San José Province-Washington, D.C. Dulles Intl Airport 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 San José, San José Province-Washington, D.C. Dulles Intl Airport 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 San José to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San José 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 San José to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from San José to Dulles Intl. Price data was last updated on March 21, 2025.

The best time to book flights from San José, San José Province to Washington, D.C. Dulles Intl Airport is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from San José, San José Province to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San José, San José Province to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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 SJO to IAD?

Find hourly flight availability from San José to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 45% on flights from San José, San José Province to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from San José to Dulles Intl. Price data was last updated on December 16, 2024.

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

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated March 28, 2025.
See what other customers who have flown with Alaska Airlines, Delta and Copa Airlines from San José to Washington, D.C. have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,896 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Copa Airlines
7.5
Good
1,395 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,603 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from San José to Dulles Intl. 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 from for flights from San José to Washington, D.C. Dulles Intl?

    Most people fly from San José Juan Santamaria Intl (SJO) if they book a flight from San José to Washington, D.C. Dulles Intl. On average, Juan Santamaria Intl has 0 outbound flights to 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 San José, San José Province to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, Volaris El Salvador ($238), United Airlines ($251), and Avianca ($260) offers the cheapest pricing from San José, San José Province to Washington, D.C. Dulles Intl Airport. Volaris El Salvador is 27% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Avianca. According to our data, you can fly for as low as $151. Users have also found prices from $152 and $155 on American Airlines and Volaris El Salvador, respectively.

  • What are the most reliable airlines from San José, San José Province to Washington, D.C. Dulles Intl Airport?

    Before booking your flight to Washington, D.C. Dulles Intl Airport from San José, San José Province, check out the most reliable airlines to get you to your destination on time: Avianca (100%), Avianca Costa Rica (100%), United Airlines( 67%).

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

    The cheapest flight price from San José, San José Province to Washington, D.C. Dulles Intl Airport is $234. On average you can expect to pay $632. The most popular route, (San José Juan Santamaria Intl - Washington, D.C. Dulles Intl), can usually be booked for $198.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San José to Dulles Intl 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 San José, San José Province to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from San José, San José Province to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San José, San José Province to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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
Arlington
Alexandria
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Gettysburg
National Harbor
Oxon Hill

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Alternative routes for San José to Dulles Intl

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

Top 6 airlines flying from San José to Dulles Intl

Discover the top 6 airlines that operate flights from San José to Dulles Intl. 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Volaris El SalvadorCheapest$173Average$278FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$203Average$266FlexibilityNo cancel feeOn-time71%
AviancaCheapest$204Average$350FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$205Average$399FlexibilityNo cancel feeOn-time69%
DeltaCheapest$234Average$291FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$285Average$369FlexibilityNo cancel feeOn-time70%
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