Cheap flights from Washington, D.C. to San José from $138

In general, May is the cheapest month to fly from Washington, D.C. to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $378. If you don’t want to visit San José in May, then you should wait until October to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $379.

On average, the least expensive day to fly to San José from Washington, D.C. is on a Thursday. momondo users have found tickets for Thursday departures for as low as $344. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Washington, D.C. to San José on a Sunday will generally be more expensive and average around $732. 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. 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 $756.

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

You are more likely to see cheaper flights to San José from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to San José for around $420 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. for as low as $369 on momondo.

There are 3 cabin classes available to choose from on Washington, D.C. 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. to San José.

As of September 2026, prices for Washington, D.C. to San José flights are approximately 67% more expensive when compared to flights at the same time last year.

Delta and United Airlines are the most popular carriers operating from Washington, D.C. 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. according to our data. Avianca is the first choice among our users, with 42% of people opting to fly with this airline when traveling to San José. Keep in mind that there are 7 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: 38% of momondo users choosing 1-stop flights on this route connected there.

Flights via Charlotte (CLT) offer the lowest average round-trip price of $301.

Flights connecting via Fort Lauderdale (FLL) have the shortest average one-way travel time: 6h 46m.

Guatemala City (GUA) has the shortest average layover time for this route: 1h 30m.

As of September 2026, there are 3 flights per week flying from Washington, D.C. to San José. The most common day of the week flights depart is Tue, with 33% of flights taking off on this day.

The flight from Washington, D.C. to San José depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Baltimore (a popular airport in Washington, D.C.) to San José (the most popular airport in San José), then the flight time is 4h 40m on average. If you fly from Washington, D.C. (another popular airport in Washington, D.C.) to San José, then the average flight time is 5h 50m.