฿3,985 Cheap Flights from Washington (IAD) to San José (SJO)

View ฿3,985 flight on Sat, 21 Feb 2026Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to Juan Santamaria Intl. Airport (SJO)

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Cheap Flights from Washington (IAD) to San José (SJO)

Prices were available within the past 7 days and start at ฿3,985 for one-way flights and ฿9,460 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 24 Feb - Wed, 4 Mar
IAD
Washington
SJO
San José
฿9,460 Return, found 3 days ago
฿9,460
Return
found 3 days ago
Select Delta flight, departing Tue, 24 Feb from Washington to San José, returning Wed, 4 Mar, priced at ฿9,460 found 3 days ago
American Airlines
Mon, 11 Aug - Tue, 2 Sep
IAD
Washington
SJO
San José
฿9,485 Return, found 6 days ago
฿9,485
Return
found 6 days ago
Select American Airlines flight, departing Mon, 11 Aug from Washington to San José, returning Tue, 2 Sep, priced at ฿9,485 found 6 days ago
avianca
Sun, 10 Aug - Tue, 2 Sep
IAD
Washington
SJO
San José
฿9,530 Return, found 6 days ago
฿9,530
Return
found 6 days ago
Select avianca flight, departing Sun, 10 Aug from Washington to San José, returning Tue, 2 Sep, priced at ฿9,530 found 6 days ago
American Airlines
Mon, 11 Aug - Tue, 2 Sep
IAD
Washington
SJO
San José
฿9,670 Return, found 6 days ago
฿9,670
Return
found 6 days ago
Select American Airlines flight, departing Mon, 11 Aug from Washington to San José, returning Tue, 2 Sep, priced at ฿9,670 found 6 days ago
American Airlines
Mon, 11 Aug - Tue, 2 Sep
IAD
Washington
SJO
San José
฿9,855 Return, found 6 days ago
฿9,855
Return
found 6 days ago
Select American Airlines flight, departing Mon, 11 Aug from Washington to San José, returning Tue, 2 Sep, priced at ฿9,855 found 6 days ago
avianca
Fri, 8 Aug - Thu, 14 Aug
IAD
Washington
SJO
San José
฿9,880 Return, found 3 days ago
฿9,880
Return
found 3 days ago
Select avianca flight, departing Fri, 8 Aug from Washington to San José, returning Thu, 14 Aug, priced at ฿9,880 found 3 days ago
avianca
Tue, 24 Feb - Wed, 4 Mar
IAD
Washington
SJO
San José
฿9,905 Return, found 3 days ago
฿9,905
Return
found 3 days ago
Select avianca flight, departing Tue, 24 Feb from Washington to San José, returning Wed, 4 Mar, priced at ฿9,905 found 3 days ago
American Airlines
Mon, 11 Aug - Tue, 2 Sep
IAD
Washington
SJO
San José
฿9,915 Return, found 6 days ago
฿9,915
Return
found 6 days ago
Select American Airlines flight, departing Mon, 11 Aug from Washington to San José, returning Tue, 2 Sep, priced at ฿9,915 found 6 days ago
Copa
Mon, 11 Aug - Tue, 2 Sep
IAD
Washington
SJO
San José
฿10,375 Return, found 6 days ago
฿10,375
Return
found 6 days ago
Select Copa flight, departing Mon, 11 Aug from Washington to San José, returning Tue, 2 Sep, priced at ฿10,375 found 6 days ago
United
Tue, 24 Feb - Wed, 4 Mar
IAD
Washington
SJO
San José
฿11,620 Return, found 3 days ago
฿11,620
Return
found 3 days ago
Select United flight, departing Tue, 24 Feb from Washington to San José, returning Wed, 4 Mar, priced at ฿11,620 found 3 days ago

Find the cheapest month to fly from Washington (IAD) to San José (SJO)

September is typically the cheapest month to fly

From ฿7,467 - ฿10,748 per traveller.

Graph displaying average flight prices per month

Flight from Washington to San José route information
Origin airport
Washington Dulles Intl.
Destination airport
Juan Santamaría Intl.
Return price
฿9,460
Distance
3269 km
Average flight time
3 hours 47 mins

Perfect flights from Washington to San José

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Washington to San José. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Washington Dulles Intl. to Juan Santamaría Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿3,985 and roundtrip prices from ฿9,460. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Juan Santamaría Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in San José.

Frequently asked questions

How much is a flight from Dulles Intl. Airport to SJO?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight from Dulles Intl. Airport to Juan Santamaria Intl. Airport was ฿9,460. Great fares don't stick around for long, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to SJO?
This varies between airlines, as each has its own set of terms and conditions. Head to the Customer Service Portal, where you'll find simple instructions on how to cancel your flight online.
How do I find cheap flights from IAD to SJO that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Washington Dulles Intl. Airport (IAD) to Juan Santamaria Intl. Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to SJO?
The flying distance between IAD (IAD) and Juan Santamaria Intl. Airport (SJO) (SJO) is 3,300 kilometres. Squeeze in a nap or finish that novel and the trip will zip by.
Which airlines fly direct from Dulles Intl. Airport to Juan Santamaria Intl. Airport?
United Airlines (UA) will get you from Washington Dulles Intl. Airport (IAD) to Juan Santamaria Intl. Airport (SJO) comfortably and reliably. Choose from 4 flights each month along this route.
Are IAD to Juan Santamaria Intl. Airport flight tickets cheaper when they're purchased at the last minute?
Booking your trip from IAD to SJO at the last minute could be your ticket to a fantastic deal. However, it might cost you a whole lot more! If you'd rather err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia.

Explore a world of travel with Expedia

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