Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to San José from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to San José departing on 4/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to San José

Cheap round-trip flights

Enter your travel dates to find the best prices.
Avianca Logo
5:45 am - 11:30 am
IAD
-
SJO
7h 45m
1 stop
Avianca Logo
3:10 pm - 2:45 am
SJO
-
IAD
9h 35m
1 stop
$297Avianca
Tue, May 19 - Tue, May 26
Avianca Logo
3:40 am - 8:30 am
IAD
-
SJO
6h 50m
1 stop
Avianca Logo
5:05 am - 3:55 pm
SJO
-
IAD
8h 50m
1 stop
$298Avianca
Sat, Apr 25 - Mon, May 4
Avianca Logo
5:35 pm - 11:40 pm
IAD
-
SJO
8h 05m
1 stop
Avianca Logo
5:05 am - 3:55 pm
SJO
-
IAD
8h 50m
1 stop
$299Avianca
Thu, Apr 23 - Mon, Apr 27
Avianca Logo
3:40 am - 8:30 am
IAD
-
SJO
6h 50mnonstop
Avianca Logo
5:05 am - 6:15 pm
SJO
-
IAD
11h 10m
1 stop
$301Avianca
Tue, May 12 - Sat, May 16
Avianca Logo
5:45 am - 11:30 am
IAD
-
SJO
7h 45m
1 stop
Avianca Logo
5:25 pm - 2:15 am
SJO
-
IAD
6h 50mnonstop
$302Avianca
Mon, May 18 - Thu, May 21
Avianca Logo
3:40 am - 8:30 am
IAD
-
SJO
6h 50mnonstop
Avianca Logo
5:25 pm - 2:15 am
SJO
-
IAD
6h 50mnonstop
$303Avianca
Tue, May 12 - Mon, May 18
Avianca Logo
4:10 am - 11:30 am
IAD
-
SJO
9h 20m
1 stop
Avianca Logo
5:05 am - 3:55 pm
SJO
-
IAD
8h 50m
1 stop
$304Avianca
Sat, Apr 18 - Sun, May 3
Avianca Logo
5:45 am - 11:30 am
IAD
-
SJO
7h 45m
1 stop
Avianca Logo
5:25 pm - 2:15 am
SJO
-
IAD
6h 50mnonstop
$305Avianca
Fri, Apr 24 - Mon, May 18
Avianca Logo
3:40 am - 8:30 am
IAD
-
SJO
6h 50m
1 stop
Avianca Logo
5:25 pm - 2:15 am
SJO
-
IAD
6h 50m
1 stop
$306Avianca
Thu, May 14 - Mon, May 18
Avianca Logo
5:45 am - 11:30 am
IAD
-
SJO
7h 45m
1 stop
Avianca Logo
4:35 pm - 2:15 am
SJO
-
IAD
7h 40m
1 stop
$307Avianca
Sun, May 31 - Fri, Jun 12

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

Our best Avianca deals on Washington, D.C. Dulles Intl Airport to San José flight tickets
Avianca
May 19
IAD5:45 amWashington, D.C. Dulles Intl
7h 45m
1 stop
SJO11:30 amSan José Juan Santamaria Intl
May 26
SJO3:10 pmSan José Juan Santamaria Intl
9h 35m
1 stop
IAD2:45 amWashington, D.C. Dulles Intl
$297
Avianca
Apr 25
IAD3:40 amWashington, D.C. Dulles Intl
6h 50m
1 stop
SJO8:30 amSan José Juan Santamaria Intl
May 4
SJO5:05 amSan José Juan Santamaria Intl
8h 50m
1 stop
IAD3:55 pmWashington, D.C. Dulles Intl
$298
Avianca
Apr 23
IAD5:35 pmWashington, D.C. Dulles Intl
8h 05m
1 stop
SJO11:40 pmSan José Juan Santamaria Intl
Apr 27
SJO5:05 amSan José Juan Santamaria Intl
8h 50m
1 stop
IAD3:55 pmWashington, D.C. Dulles Intl
$299

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to San José flight tickets
American Airlines
Jun 4
IAD6:18 amWashington, D.C. Dulles Intl
18h 24m
1 stop
SJO10:42 pmSan José Juan Santamaria Intl
Jun 11
SJO1:59 pmSan José Juan Santamaria Intl
8h 14m
1 stop
IAD12:13 amWashington, D.C. Dulles Intl
$320
American Airlines
Apr 25
IAD7:00 amWashington, D.C. Dulles Intl
16h 36m
1 stop
SJO9:36 pmSan José Juan Santamaria Intl
Apr 28
SJO12:10 pmSan José Juan Santamaria Intl
18h 39m
2 stops
IAD8:49 amWashington, D.C. Dulles Intl
$325
American Airlines
Apr 22
IAD8:11 pmWashington, D.C. Dulles Intl
16h 56m
2 stops
SJO11:07 amSan José Juan Santamaria Intl
Apr 26
SJO11:35 pmSan José Juan Santamaria Intl
22h 24m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
$330

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to San José 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, momondo users made 832,500 searches. Data last updated April 9, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 5/19

5:45 am-11:30 am

1 stop7h 45m

San José Juan Santamaria Intl

Tue 5/26

3:10 pm-2:45 am

1 stop9h 35m

$297

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 4/25

3:40 am-8:30 am

1 stop6h 50m

San José Juan Santamaria Intl

Mon 5/4

5:05 am-3:55 pm

1 stop8h 50m

$298

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 4/23

5:35 pm-11:40 pm

1 stop8h 05m

San José Juan Santamaria Intl

Mon 4/27

5:05 am-3:55 pm

1 stop8h 50m

$299

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 5/12

3:40 am-8:30 am

Nonstop6h 50m

San José Juan Santamaria Intl

Sat 5/16

5:05 am-6:15 pm

1 stop11h 10m

$301

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 5/18

5:45 am-11:30 am

1 stop7h 45m

San José Juan Santamaria Intl

Thu 5/21

5:25 pm-2:15 am

Nonstop6h 50m

$302
Quickest round-trip

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 5/12

3:40 am-8:30 am

Nonstop6h 50m

San José Juan Santamaria Intl

Mon 5/18

5:25 pm-2:15 am

Nonstop6h 50m

$303

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 4/18

4:10 am-11:30 am

1 stop9h 20m

San José Juan Santamaria Intl

Sun 5/3

5:05 am-3:55 pm

1 stop8h 50m

$304

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 4/24

5:45 am-11:30 am

1 stop7h 45m

San José Juan Santamaria Intl

Mon 5/18

5:25 pm-2:15 am

Nonstop6h 50m

$305

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 5/14

3:40 am-8:30 am

1 stop6h 50m

San José Juan Santamaria Intl

Mon 5/18

5:25 pm-2:15 am

1 stop6h 50m

$306

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 5/31

5:45 am-11:30 am

1 stop7h 45m

San José Juan Santamaria Intl

Fri 6/12

4:35 pm-2:15 am

1 stop7h 40m

$307

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San José from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to San José

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and San José?

What is the cheapest month to fly to San José?

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 $270. If you don’t want to visit San José in October, then you should wait until September to fly from Washington, D.C. Dulles Intl Airport, when ticket prices are also cheap, with an average price of $295.

What is the cheapest day to depart on your flight to San José?

On average, the least expensive day to fly to San José from Washington, D.C. Dulles Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $347. 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 Saturday will generally be more expensive and average around $603. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to San José?

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 $727.

What is the cheapest Washington, D.C. Dulles Intl to San José Juan Santamaria Intl flight route?

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

How far in advance should I book a flight to San José?

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 $355 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 $330 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to San José Juan Santamaria Intl flights?

There is only 1 cabin class available to choose from on Washington, D.C. Dulles Intl to San José Juan Santamaria Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to San José flights?

You could potentially save up to 2% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to San José flight.

How have Washington, D.C. Dulles Intl Airport to San José flight prices changed over time?

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

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to San José according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to San José (IAD to SJO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to San José

Best Price Found

$153

Fastest flight time

4h 56m

Direct flights

Mon, Tue, Wed, Fri and Sun

Airports in San José

1 airport
The best one-way flight to San José from Washington, D.C. Dulles Intl Airport in the past 72 hours is $153. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to San José found on momondo in the last 72 hours is $353.
The fastest flight from Washington, D.C. Dulles Intl Airport to San José takes 4h 56m
Direct flights go from Washington, D.C. Dulles Intl Airport to San José on Monday, Tuesday, Wednesday, Friday and Sunday. There are no airlines offering direct flights.
There is 1 airport in San José. From Washington, D.C. Dulles Intl Airport there are direct flights to San José Juan Santamaria Intl (SJO).
Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to San José

  • How far is Washington, D.C. Dulles Intl to San José Juan Santamaria Intl by plane?

    Washington, D.C. Dulles Intl and San José Juan Santamaria Intl are 2045.0 mi apart from one another. In terms of flight time, this usually takes a little over 4h 56m.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to San José Juan Santamaria Intl Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to San José Juan Santamaria Intl Airport are updated daily.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to San José Juan Santamaria Intl Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to San José Juan Santamaria Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to San José Juan Santamaria Intl Airport.

  • What documentation or ID do you need to fly to San José Juan Santamaria Intl Airport?

    The required travel and health documents for your San José Juan Santamaria Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San José Juan Santamaria Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to San José?

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to San José?

Best airlines flying from Washington, D.C. Dulles Intl Airport to San José

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San José with momondo
Airline
Rating
Free Cancellation
Price
Volaris El SalvadorPriceFrom $102Free CancellationRating
7.4
29 reviews
Search Volaris El Salvador flights
DeltaPriceFrom $168Free CancellationRating
7.9
8,392 reviews
Search Delta flights
Copa AirlinesPriceFrom $169Free CancellationRating
7.5
1,575 reviews
Search Copa Airlines flights
AviancaPriceFrom $234Free CancellationRating
6.5
2,503 reviews
Search Avianca flights
United AirlinesPriceFrom $235Free CancellationRating
7.4
9,554 reviews
Search United Airlines flights
American AirlinesPriceFrom $237Free CancellationRating
7.1
11,564 reviews
Search American Airlines flights

  • Avianca Flights From Washington, D.C. Dulles Intl Airport to San José

    The lowest priced Avianca flight from Washington, D.C. Dulles Intl Airport to San José from the last 72 hours was $234. Generally, Avianca has 1 flight on this route every week with an average price of $358. Avianca is rated 6.5/10 by our users.

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Manuel Antonio
Jacó
Monteverde
Alajuela
Heredia
Santa Elena
Dominical
San Gerardo de Dota
Esterillos Este

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to San José?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to San José for you.

Can I find flights from Washington, D.C. to San José with flexible booking policies on momondo?

Yes. All flights to San José from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to San José?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to San José.

I’m not ready to book a flight from Washington, D.C. to San José right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to San José now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San José and let you know when they change.

An easier way to manage your San José trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 5/9
Sat 5/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Costa Rica