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Cheap flights from Washington, D.C. Dulles Intl Airport to San José

IAD — SJO
23 Sep — 30 Sep1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Dulles Intl to San José

Popular in

December

Cheapest in

October

Average price

C$ 650
Highest demand for flights based on searches. 0% potential increase in price (C$ 2 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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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

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?

Booking 4 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to San José. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 C$ 401). Flying from Washington, D.C. Dulles Intl Airport to San José in December is currently the most expensive (average of C$ 699). 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?

When flying from Washington, D.C. Dulles Intl Airport to San José, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

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

    San José Juan Santamaria Intl (SJO), located 14.1 km from the city centre, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to San José. 0 airlines have flights to Juan Santamaria Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.

  • 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 C$ 401). Flying from Washington, D.C. Dulles Intl Airport to San José in December is currently the most expensive (average of C$ 699). 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

Travelling to a place near San José?

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

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How does Cheapflights help users find flights from Dulles Intl to San José?

Cheapflights helps you search for flights from Dulles Intl to San José via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to San José?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dulles Intl to San José for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Dulles Intl to San José with no change fees?

Certainly. Search results for flights to San José from Dulles Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Dulles Intl to San José become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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