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San José

$107+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
Jul 28 — Aug 41
Mon 7/28
Mon 8/4
1 adult, Economy
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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 September or October, booked 80 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap 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 July 23, 2025.

Round-trip from

$255
(FlightHub)

One-way from

$107
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$350

Good round-trip deal

$281 or less

Good one-way deal

$179 or less
From Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
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One-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl
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Highest demand for flights based on searches. 16% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl.
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Find 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 July 23, 2025.

This Avianca deal was found by Cheapflights users on 7/22. 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.
Thu 7/241:05 amIAD - SJO
Nonstop4h 30mAvianca
Thu 8/75:10 pmSJO - IAD
Nonstop4h 35mAvianca
Deal found 7/22$255
This Copa Airlines deal was found by Cheapflights users on 7/21. 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.
Wed 8/204:34 pmIAD - SJO
1 stop17h 45mCopa Airlines
Wed 8/2710:05 amSJO - IAD
1 stop16h 13mCopa Airlines
Deal found 7/21$256
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/257:44 amIAD - SJO
1 stop7h 11mAmerican Airlines
Fri 8/292:15 pmSJO - IAD
1 stop7h 37mAmerican Airlines
Deal found 7/21$262
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1510:05 pmIAD - SJO
1 stop16h 21mUnited Airlines
Sat 9/2012:44 pmSJO - IAD
1 stop16h 46mUnited Airlines
Deal found 7/22$269
This Gotogate deal was found by Cheapflights users on 7/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/172:25 pmIAD - SJO
1 stop18h 19mMultiple Airlines
Thu 8/215:10 pmSJO - IAD
Nonstop4h 35mMultiple Airlines
Deal found 7/21$270
This Delta deal was found by Cheapflights users on 7/22. 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.
Thu 9/116:00 amIAD - SJO
1 stop8h 08mDelta
Fri 10/31:35 pmSJO - IAD
1 stop8h 38mDelta
Deal found 7/22$286

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 July 23, 2025.
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

Dulles Intl

Fly to

San José

Route

Depart

Return

Price

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 8/26

2:35 am-7:40 am

Nonstop7h 05m

San José Juan Santamaria Intl

Tue 9/9

4:20 pm-1:15 am

Nonstop6h 55m

$255

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 8/20

4:34 pm-7:34 am

1 stop17h 00m

San José Juan Santamaria Intl

Thu 8/28

5:54 pm-4:18 am

1 stop8h 24m

$256

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 8/25

7:44 am-12:55 pm

1 stop7h 11m

San José Juan Santamaria Intl

Fri 8/29

2:15 pm-11:52 pm

1 stop7h 37m

$262

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 9/15

10:05 pm-12:26 pm

1 stop16h 21m

San José Juan Santamaria Intl

Sat 9/20

12:44 pm-7:30 am

1 stop16h 46m

$269

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sun 8/17

2:25 pm-6:44 am

1 stop18h 19m

San José Juan Santamaria Intl

Thu 8/21

5:10 pm-11:45 pm

Nonstop4h 35m

$270

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Thu 9/11

6:00 am-12:08 pm

1 stop8h 08m

San José Juan Santamaria Intl

Fri 10/3

1:35 pm-12:13 am

1 stop8h 38m

$286

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 8/25

2:35 am-7:40 am

1 stop7h 05m

$107

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 8/20

4:34 pm-7:34 am

1 stop17h 00m

$110

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 8/22

6:00 am-12:26 pm

1 stop8h 26m

$112

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 8/13

7:44 am-6:15 pm

2 stops12h 31m

$115

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

Showing 1-10 of 13 results
1
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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
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, San José Province?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to San José. Price data was last updated on July 18, 2025.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to San José, San José Province may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to San José, San José Province?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José, San José Province (average of $398). Flying from Washington, D.C. Dulles Intl Airport to San José, San José Province in March is currently the most expensive (average of $555). 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 July 23, 2025.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to San José, San José Province is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 57% on airfare.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to San José, San José Province?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to San José. Price data was last updated on July 20, 2025.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to San José, San José Province flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

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 July 23, 2025.
Read reviews from past customers who have flown Delta, Copa Airlines, and United 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
8.0
Very good
7,967 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,967 reviews
Delta
8.0
Very good
7,967 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Copa Airlines
7.5
Good
1,490 reviews
Delta
8.0
Very good
7,967 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,873 reviews
Delta
8.0
Very good
7,967 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,967 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    Flying on Avianca is currently your cheapest option to San José, San José Province, with prices starting at $255. Additional round-trip tickets that might be worth considering are offered by Copa Airlines and American Airlines, with the lowest prices starting at $256 and $262, respectively. You may be able to fly from Washington, D.C. Dulles Intl Airport to San José, San José Province for 36% less than the average price by searching for these airlines.

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

    $107 is the cheapest one-way deal found within the past few days, from Avianca. You may also be able to find cheap deals on Copa Airlines and United Airlines, with prices starting from $110 and $112, respectively.

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

    Looking at all options, your cheapest flight can be booked for $125. While the most popular route (Washington, D.C. Dulles Intl - San José Juan Santamaria Intl) can be booked for $240 on average our data indicates $309 when flying from Washington, D.C. Dulles Intl Airport to San José, San José Province.

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

    The most popular layover on flights from Washington, D.C. Dulles Intl Airport to San José, San José Province is Panama City. San Salvador is the second most popular location for layovers on flights from Washington, D.C. Dulles Intl Airport to San José, San José Province.

  • What are some popular things to do or see while on a layover in Panama City?

    If you're on a layover in Panama City and looking for things to do, consider visiting Panama Old Cathedral, Amador Causeway, or Panama Canal. Panama Old Cathedral, Amador Causeway, and Panama Canal can be visited by traveling about 13.2 mi, 14.7 mi, and 15.1 mi respectively from Panama City Tocumen Intl. Those on a layover in Panama City in need of a rental car can book one at Panama City Tocumen Intl for about $14.

  • What are some popular points of interest to see during a layover in San Salvador?

    Centro Historico de San Salvador, Catedral Metropolitana de San Salvador, and Monsenor Romero Center are currently the most popular points of interest in San Salvador at the moment. Centro Historico de San Salvador, Catedral Metropolitana de San Salvador, and Monsenor Romero Center can be visited by traveling about 19.7 mi, 19.7 mi, and 20.1 mi respectively from San Salvador El Salvador Intl. Travelers can rent a car at San Salvador El Salvador Intl for an average daily rate of $30 to make sightseeing during their layover a little easier.

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

    Of the flights from Washington, D.C. Dulles Intl Airport to San José, San José Province that have layovers, the fewest flights stop in Guatemala City.

  • 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, San José Province?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José, San José Province (average of $398). Flying from Washington, D.C. Dulles Intl Airport to San José, San José Province in March is currently the most expensive (average of $555). 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
Heredia
Manuel Antonio
Alajuela
Monteverde
Jacó

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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
Reagan-National 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 July 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$174Average$483FlexibilityNo cancel feeOn-timeN/A
Volaris El SalvadorCheapest$200Average$290FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$212Average$616FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$230Average$366FlexibilityNo cancel feeOn-time71%
AviancaCheapest$258Average$389FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$274Average$405FlexibilityNo cancel feeOn-time70%

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