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San José

$167+ Cheap flights from Dulles Intl (IAD) to San José (SJO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
Jun 24 — Jul 11
Wed 6/24
Wed 7/1
1 adult, Economy
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Find cheap flights from Dulles Intl to San José with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl are usually found in October or September, booked 51 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Cheap flight deals from Dulles Intl to San José

Cheapest flights from Dulles Intl to San José
Explore the most affordable flight options available from Dulles Intl to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 25, 2026.

This Copa Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/314:38 pm
IAD
-
SJO
1 stop16h 31m
Copa Airlines
Thu 6/44:10 am
SJO
-
IAD
1 stop22h 11m
Copa Airlines
Deal found 5/21$344
This United Airlines deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:20 am
IAD
-
SJO
1 stop8h 01m
United Airlines
Thu 5/281:25 pm
SJO
-
IAD
1 stop9h 06m
United Airlines
Deal found 5/24$356
This Copa Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/304:38 pm
IAD
-
SJO
1 stop16h 31m
Copa Airlines
Sun 6/75:57 pm
SJO
-
IAD
1 stop8h 24m
Copa Airlines
Deal found 5/20$358
This Copa Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:25 am
IAD
-
SJO
1 stop9h 39m
Copa Airlines
Wed 6/175:57 pm
SJO
-
IAD
1 stop8h 24m
Copa Airlines
Deal found 5/20$359
This Avianca deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:35 pm
IAD
-
SJO
2 stops14h 55m
Avianca
Sun 8/24:35 pm
SJO
-
IAD
2 stops9h 45m
Avianca
Deal found 5/22$361
This Copa Airlines deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/264:38 pm
IAD
-
SJO
1 stop16h 31m
Copa Airlines
Sun 5/318:14 am
SJO
-
IAD
1 stop18h 07m
Copa Airlines
Deal found 5/24$364
This Copa Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:34 pm
IAD
-
SJO
1 stop17h 45m
Copa Airlines
Wed 10/286:08 pm
SJO
-
IAD
1 stop8h 05m
Copa Airlines
Deal found 5/21$366
This Copa Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/262:21 am
IAD
-
SJO
1 stop9h 39m
Copa Airlines
Sat 5/3010:05 am
SJO
-
IAD
1 stop12h 28m
Copa Airlines
Deal found 5/21$372
This Copa Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/84:38 pm
IAD
-
SJO
1 stop17h 43m
Copa Airlines
Mon 6/158:47 am
SJO
-
IAD
1 stop13h 46m
Copa Airlines
Deal found 5/21$373
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am
IAD
-
SJO
1 stop17h 15m
Delta
Thu 11/197:00 am
SJO
-
IAD
1 stop8h 36m
Delta
Deal found 5/22$376
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:31 am
IAD
-
SJO
1 stop13h 06m
United Airlines
Sun 9/1312:44 pm
SJO
-
IAD
1 stop8h 15m
United Airlines
Deal found 5/20$377

Find flight deals from Dulles Intl to San José

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to San José (SJO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$344
(Copa Airlines)

One-way from

$167
(United Airlines)

Popular in

March

Cheapest in

October

Average price

$378

Good round-trip deal

$756 or less

Good one-way deal

$213 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-San José Juan Santamaria Intl flights.
Search Deals
From Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
Search Deals
One-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated May 25, 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 11/17

6:00 am-1:05 pm

1 stop8h 05m

San José Juan Santamaria Intl

Mon 11/23

7:00 am-4:36 pm

1 stop8h 36m

$356

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 6/13

4:38 pm-9:06 am

1 stop18h 28m

San José Juan Santamaria Intl

Wed 6/17

6:19 pm-4:21 am

1 stop8h 02m

$373

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 6/9

4:38 pm-7:09 am

1 stop16h 31m

San José Juan Santamaria Intl

Fri 6/19

4:10 am-3:05 pm

1 stop8h 55m

$373
Quickest round-trip

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 11/4

6:30 am-1:15 pm

1 stop7h 45m

San José Juan Santamaria Intl

Wed 11/11

2:20 pm-11:51 pm

1 stop8h 31m

$376

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 6/7

4:38 pm-7:09 am

1 stop16h 31m

San José Juan Santamaria Intl

Thu 6/11

4:10 am-4:21 am

1 stop22h 11m

$376

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 6/5

4:38 pm-2:04 pm

1 stop23h 26m

San José Juan Santamaria Intl

Mon 6/8

10:05 am-4:21 am

1 stop16h 16m

$388

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 6/15

4:38 pm-8:21 am

1 stop17h 43m

San José Juan Santamaria Intl

Sun 6/21

5:47 am-12:33 am

1 stop16h 46m

$391

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 10/31

1:12 am-9:06 am

1 stop9h 54m

San José Juan Santamaria Intl

Sun 11/8

12:04 pm-3:13 am

1 stop14h 09m

$391

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 10/12

6:00 am-11:58 am

1 stop7h 58m

San José Juan Santamaria Intl

Tue 10/20

1:23 pm-12:05 am

1 stop8h 42m

$417

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 6/12

4:38 pm-11:06 am

1 stop20h 28m

San José Juan Santamaria Intl

Tue 6/16

5:47 am-4:21 am

1 stop20h 34m

$451

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/22

Showing 1-10 of 21 resultsSorted by cheapest first
1
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3

Compare providers for flights from Dulles Intl to San José

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to San José in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San José flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-San José flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San José flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San José flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-San José flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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?

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to San José, you should look to book at least 4 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $270). Flying from Washington, D.C. Dulles Intl Airport to San José in March is currently the most expensive (average of $439). 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?

Find hourly flight availability from Dulles Intl to San José. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 25, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to San José as you normally would.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to San José?

Reviews of airlines servicing San José

Get insights into the airlines that provide service to San José. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San José. Reviews last updated May 25, 2026.
Read reviews from past customers who have flown Delta,Copa Airlines, andUnited Airlines from Washington, D.C. Dulles Intl Airport to San José. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,433 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,433 reviews
Delta
7.9
Good
8,433 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Copa Airlines
7.5
Good
1,576 reviews
Delta
7.9
Good
8,433 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,747 reviews
Delta
7.9
Good
8,433 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,628 reviews
Delta
7.9
Good
8,433 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Avianca
6.5
Okay
2,528 reviews
Delta
7.9
Good
8,433 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to San José. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Most people fly into San José Juan Santamaria Intl (SJO) if they book a flight to San José from Washington, D.C. Dulles Intl. On average, Juan Santamaria Intl has 0 inbound flights from Washington, D.C. Dulles Intl per day from 6 airlines. San José Juan Santamaria Intl is conveniently located just 8.8 mi from San José’s city center.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to San José?

    Delta, Copa Airlines, and United Airlines can get you from Washington, D.C. Dulles Intl Airport to San José in just under 7h 45m. Your travel time can differ by up to 10h 43m. The distance from Washington, D.C. Dulles Intl Airport to San José is about 2042 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to San José round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to San José is Copa Airlines. Our recent data shows that you can find tickets from as low as $170 on this airline. Additional options worth looking into are Delta and Volaris El Salvador, starting at $174 and $197 round-trip. Users have found that Copa Airlines is 53% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to San José one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to San José are United Airlines ($101), Avianca ($107), and Copa Airlines ($109).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to San José?

    Looking at all options, your cheapest flight can be booked for $153. While the most popular route (Washington, D.C. Dulles Intl - San José Juan Santamaria Intl) can be booked for $356 on average, our data indicates $559 when flying from Washington, D.C. Dulles Intl Airport to San José.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to San José?

    Of the flights from Washington, D.C. Dulles Intl Airport to San José that have layovers, most of them stop in San Salvador.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to San José flights?

    Washington, D.C. Dulles Intl Airport to San José flights have a layover in Panama City the least frequently.

  • 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 $270). Flying from Washington, D.C. Dulles Intl Airport to San José in March is currently the most expensive (average of $439). 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

Traveling to a place near San José?

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

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Alternative routes for Dulles Intl to San José

See prices for flight routes from nearby airports that may be better suited for you.
Baltimore to San José flights
Reagan-National to San José flights
Dulles Intl to Liberia flights
Baltimore to Liberia flights

Top 6 airlines flying from Dulles Intl to San José

Discover the top 6 airlines that operate flights from Dulles Intl to San José. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$170Average$352FlexibilityNo cancel feeOn-time70%
DeltaCheapest$174Average$532FlexibilityNo cancel feeOn-timeN/A
Volaris El SalvadorCheapest$197Average$340FlexibilityNo cancel feeOn-timeN/A
AviancaCheapest$238Average$368FlexibilityNo cancel feeOn-time71%
American AirlinesCheapest$240Average$394FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$519FlexibilityNo cancel feeOn-time69%

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