Cheap flights from Washington, D.C. Dulles Intl Airport to San José from $137

In general, October is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $301. If you don’t want to visit San José in October, then you should wait until November to fly from Washington, D.C. Dulles Intl Airport, when ticket prices are also cheap, with an average price of $346.

On average, the least expensive day to fly to San José from Washington, D.C. Dulles Intl Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $336. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Washington, D.C. Dulles Intl Airport to San José on a Sunday will generally be more expensive and average around $725. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest Washington, D.C. Dulles Intl Airport to San José flights are usually those with departure times in the evening. Our users have found flights to San José in the evening for as low as $383. Flights in the morning are often more expensive with an average ticket price of $753.

Fly from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl for the best Washington, D.C. Dulles Intl - San José Juan Santamaria Intl flight prices

You are more likely to see cheaper flights to San José from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San José for around $408 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San José from Washington, D.C. Dulles Intl Airport for as low as $369 on momondo.

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport to San José flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Washington, D.C. Dulles Intl Airport to San José.

As of September 2026, prices for Washington, D.C. Dulles Intl Airport to San José flights are approximately 8% more expensive when compared to flights at the same time last year.

United Airlines and Delta are the most popular carriers operating from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl

Avianca, Copa Airlines and United Airlines are the top three most popular airlines that fly to San José from Washington, D.C. Dulles Intl Airport according to our data. Avianca is the first choice among our users, with 53% of people opting to fly with this airline when traveling to San José. Keep in mind that there are 5 different airlines that fly to San José on a routine basis, so you have a few additional options to choose from.

Panama City (PTY) was the most common stop: 48% of momondo users choosing 1-stop flights on this route connected there.

Flights via Panama City (PTY) offer the lowest average round-trip price of $404.

Flights connecting via Guatemala City (GUA) have the shortest average one-way travel time: 7h 28m.

Panama City (PTY) has the shortest average layover time for this route: 1h 33m.