In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular airlines that fly from San José, San José Province to Washington, D.C. Dulles Intl Airport?

Consider American Airlines, Avianca or Copa Airlines when booking your flight. These represent the most popular airlines when flying from San José, San José Province to Washington, D.C. Dulles Intl Airport.

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

Most people fly from San José Juan Santamaria Intl (SJO) if they book a flight from San José to Washington, D.C. Dulles Intl. On average, Juan Santamaria Intl has 0 outbound flights to Washington, D.C. Dulles Intl per day from 5 airlines. San José Juan Santamaria Intl is conveniently located just 8.8 mi from San José’s city center.

Can I find deals for flights from San José to Dulles Intl that include hotel bookings?

Yes. In addition to deals on San José to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San José to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San José to Dulles Intl.

Can I find deals for business class flights from San José to Dulles Intl?

Yes. Cheapflights offers flight deals from San José to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$141+ Flights from San José to Washington, D.C. Dulles Intl Airport

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

Airfare is below average for this route at the moment. San José, San José Province to Washington, D.C. Dulles Intl Airport flights typically cost between $269 and $411 in January. The cheapest round-trip price found within the last 3 days was $229 on Avianca (Jan 13-Jan 20).

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Find cheap flights from San José to Dulles Intl 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl are usually found in October or July, booked 65 days in advance, depart on a Friday or Monday and return on a Tuesday

Cheap flight deals from San José to Dulles Intl

Round-trip from	$229 (Avianca)
One-way from	$141 (Jettzy)
Popular in	December
Cheapest in	October
Average price	$324
Good round-trip deal	$239 or less
Good one-way deal	$138 or less

From San José Juan Santamaria Intl to Washington, D.C. Dulles Intl

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One-way flight from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl

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Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Price to beat on a round-trip flight from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl.

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Price to beat on a one-way flight from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl.

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Find flight deals from San José to Dulles Intl

Cheapest flights from San José to Dulles Intl
Explore the most affordable flight options available from San José to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Thu 10/234:20 pmSJO - IAD

1 stop6h 55mAvianca

Mon 11/31:30 amIAD - SJO

1 stop7h 15mAvianca

Deal found 9/10

$229

Wed 10/13:05 pmSJO - IAD

1 stop9h 40mAvianca

Mon 10/62:35 amIAD - SJO

1 stop7h 05mAvianca

Deal found 9/10

$230

Thu 9/254:20 pmSJO - IAD

1 stop6h 55mAvianca

Sun 10/54:05 amIAD - SJO

1 stop9h 10mAvianca

Deal found 9/10

$231

Fri 9/267:45 pmSJO - IAD

1 stop6h 35mAvianca

Tue 9/304:05 amIAD - SJO

1 stop6h 35mAvianca

Deal found 9/9

$232

Fri 10/34:17 pmSJO - IAD

1 stop18h 20mVolaris El Salvador

Sat 10/112:25 pmIAD - SJO

1 stop18h 19mVolaris El Salvador

Deal found 9/11

$236

Thu 9/187:55 amSJO - IAD

1 stop9h 18mUnited Airlines

Mon 9/226:55 pmIAD - SJO

1 stop14h 20mUnited Airlines

Deal found 9/11

$238

Tue 10/75:00 pmSJO - IAD

1 stop17h 37mMultiple Airlines

Mon 10/132:37 amIAD - SJO

1 stop19h 42mMultiple Airlines

Deal found 9/9

$239

Fri 10/104:17 pmSJO - IAD

1 stop18h 20mVolaris El Salvador

Sun 10/122:25 pmIAD - SJO

1 stop18h 19mVolaris El Salvador

Deal found 9/10

$240

Fri 12/57:50 pmSJO - IAD

1 stop6h 20mAvianca

Sat 12/1311:55 pmIAD - SJO

Nonstop4h 55mAvianca

Deal found 9/10

$241

Thu 9/119:35 amSJO - IAD

1 stop15h 10mAvianca

Thu 9/185:05 pmIAD - SJO

1 stop8h 30mAvianca

Deal found 9/10

$242

Fri 10/34:17 pmSJO - IAD

1 stop18h 20mMultiple Airlines

Wed 10/82:37 amIAD - SJO

1 stop19h 42mMultiple Airlines

Deal found 9/10

$244

Wed 9/177:55 amSJO - IAD

1 stop9h 18mUnited Airlines

Sun 9/216:35 amIAD - SJO

1 stop26h 40mUnited Airlines

Deal found 9/11

$245

Best flights from San José to Dulles Intl
Discover carefully curated flight deals from San José to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Fri 9/198:37 amSJO - IAD

1 stop21h 31mUnited Airlines

Fri 9/2610:18 pmIAD - SJO

1 stop16h 08mUnited Airlines

Deal found 9/11

$238

Fri 11/213:05 pmSJO - IAD

1 stop9h 35mAvianca

Mon 12/111:55 pmIAD - SJO

Nonstop4h 55mAvianca

Deal found 9/11

$248

Sat 10/410:58 amSJO - IAD

1 stop15h 22mCopa Airlines

Sat 10/112:25 amIAD - SJO

1 stop8h 39mCopa Airlines

Deal found 9/10

$249

Mon 11/109:40 amSJO - IAD

1 stop20h 15mUnited Airlines

Thu 11/1310:10 pmIAD - SJO

1 stop14h 15mUnited Airlines

Deal found 9/9

$238

Fri 9/268:49 amSJO - IAD

1 stop13h 41mCopa Airlines

Sun 10/52:25 amIAD - SJO

1 stop9h 33mCopa Airlines

Deal found 9/10

$249

Wed 9/171:30 pmSJO - IAD

1 stop8h 25mUnited Airlines

Thu 9/256:01 amIAD - SJO

1 stop8h 25mUnited Airlines

Deal found 9/11

$245

Tue 9/236:09 pmSJO - IAD

1 stop8h 11mCopa Airlines

Sat 9/274:34 pmIAD - SJO

1 stop16h 53mCopa Airlines

Deal found 9/11

$249

Thu 10/237:55 amSJO - IAD

1 stop12h 11mUnited Airlines

Mon 10/276:03 pmIAD - SJO

1 stop15h 29mUnited Airlines

Deal found 9/11

$247

Mon 10/66:10 pmSJO - IAD

1 stop8h 10mCopa Airlines

Sat 10/114:41 pmIAD - SJO

1 stop16h 49mCopa Airlines

Deal found 9/10

$249

Wed 10/227:55 amSJO - IAD

1 stop13h 56mUnited Airlines

Sun 10/266:00 amIAD - SJO

1 stop7h 42mUnited Airlines

Deal found 9/10

$247

Tue 9/165:54 pmSJO - IAD

1 stop8h 26mCopa Airlines

Mon 9/222:25 amIAD - SJO

1 stop8h 39mCopa Airlines

Deal found 9/11

$249

Tue 9/168:37 amSJO - IAD

1 stop20h 23mUnited Airlines

Thu 9/256:01 amIAD - SJO

1 stop8h 25mUnited Airlines

Deal found 9/11

$248

Last-minute flights from San José to Dulles Intl
Discover last-minute flight deals from San José to Dulles Intl. Data last updated September 11, 2025 and is based on user searches.

Thu 9/119:35 amSJO - IAD

1 stop15h 10mAvianca

Thu 9/185:05 pmIAD - SJO

1 stop8h 30mAvianca

Deal found 9/10

$242

Wed 9/177:55 amSJO - IAD

1 stop9h 18mUnited Airlines

Sun 9/216:35 amIAD - SJO

1 stop26h 40mUnited Airlines

Deal found 9/11

$245

Thu 9/187:55 amSJO - IAD

1 stop9h 18mUnited Airlines

Mon 9/226:55 pmIAD - SJO

1 stop14h 20mUnited Airlines

Deal found 9/11

$238

Thu 9/254:20 pmSJO - IAD

1 stop6h 55mAvianca

Wed 10/15:45 amIAD - SJO

1 stop7h 30mAvianca

Deal found 9/9

$231

Thu 9/254:20 pmSJO - IAD

1 stop6h 55mAvianca

Mon 9/295:45 amIAD - SJO

1 stop7h 30mAvianca

Deal found 9/11

$241

Fri 9/267:45 pmSJO - IAD

1 stop6h 35mAvianca

Tue 9/304:05 amIAD - SJO

1 stop6h 35mAvianca

Deal found 9/9

$232

Wed 10/15:05 amSJO - IAD

1 stop8h 40mAvianca

Tue 10/72:35 amIAD - SJO

1 stop7h 05mAvianca

Deal found 9/10

$230

Fri 10/34:17 pmSJO - IAD

1 stop18h 20mVolaris El Salvador

Sat 10/112:25 pmIAD - SJO

1 stop18h 19mVolaris El Salvador

Deal found 9/11

$236

Fri 10/34:17 pmSJO - IAD

1 stop18h 20mMultiple Airlines

Wed 10/82:37 amIAD - SJO

1 stop19h 42mMultiple Airlines

Deal found 9/10

$244

Tue 10/75:00 pmSJO - IAD

1 stop17h 37mMultiple Airlines

Mon 10/132:37 amIAD - SJO

1 stop19h 42mMultiple Airlines

Deal found 9/9

$239

Fri 10/104:17 pmSJO - IAD

1 stop18h 20mVolaris El Salvador

Sun 10/122:25 pmIAD - SJO

1 stop18h 19mVolaris El Salvador

Deal found 9/10

$240

Thu 10/234:20 pmSJO - IAD

1 stop6h 55mAvianca

Mon 11/31:30 amIAD - SJO

1 stop7h 15mAvianca

Deal found 9/10

$229

One-way flights from San José to Dulles Intl
Search for one-way flight options from San José to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Fri 10/247:45 pmSJO - IAD

1 stop6h 35mAvianca

Deal found 9/10

$141

Fri 10/174:45 pmSJO - IAD

1 stop9h 35mAvianca

Deal found 9/11

$142

Tue 11/189:40 amSJO - IAD

1 stop20h 15mUnited Airlines

Deal found 9/11

$143

Mon 12/15:10 pmSJO - IAD

Nonstop4h 25mAvianca

Deal found 9/10

$144

Sat 10/115:00 pmSJO - IAD

1 stop17h 37mMultiple Airlines

Deal found 9/9

$145

Thu 9/185:05 amSJO - IAD

2 stops18h 10mAvianca

Deal found 9/10

$146

Thu 10/234:20 pmSJO - IAD

1 stop6h 55mAvianca

Deal found 9/10

$148

Sat 10/117:45 pmSJO - IAD

1 stop6h 35mAvianca

Deal found 9/10

$153

Wed 10/157:45 pmSJO - IAD

2 stops27h 30mAvianca

Deal found 9/9

$155

Fri 10/103:05 pmSJO - IAD

1 stop9h 40mAvianca

Deal found 9/10

$156

Sun 10/127:45 pmSJO - IAD

1 stop6h 35mAvianca

Deal found 9/10

$157

Cheapflights Fare Finder

Use the filters below to find and compare flights from San José to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Fri 9/19

8:37 am-8:08 am

1 stop21h 31m

Washington, D.C. Dulles Intl

Fri 9/26

10:18 pm-12:26 pm

1 stop16h 08m

$238

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Mon 11/10

9:40 am-6:55 am

1 stop20h 15m

Washington, D.C. Dulles Intl

Thu 11/13

10:10 pm-11:25 am

1 stop14h 15m

$238

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 9/17

1:30 pm-11:55 pm

1 stop8h 25m

Washington, D.C. Dulles Intl

Thu 9/25

6:01 am-12:26 pm

1 stop8h 25m

$245

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Thu 10/23

7:55 am-10:06 pm

1 stop12h 11m

Washington, D.C. Dulles Intl

Mon 10/27

6:03 pm-7:32 am

1 stop15h 29m

$247

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 10/22

7:55 am-11:51 pm

1 stop13h 56m

Washington, D.C. Dulles Intl

Sun 10/26

6:00 am-11:42 am

1 stop7h 42m

$247

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Fri 11/21

3:05 pm-1:40 am

1 stop9h 35m

Washington, D.C. Dulles Intl

Mon 12/1

11:55 pm-3:50 am

Nonstop4h 55m

$248

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Tue 9/16

8:37 am-7:00 am

1 stop20h 23m

Washington, D.C. Dulles Intl

Thu 9/25

6:01 am-12:26 pm

1 stop8h 25m

$248

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Sat 10/4

10:58 am-4:20 am

1 stop15h 22m

Washington, D.C. Dulles Intl

Sat 10/11

2:25 am-9:04 am

1 stop8h 39m

$249

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Fri 9/26

8:49 am-12:30 am

1 stop13h 41m

Washington, D.C. Dulles Intl

Sun 10/5

2:25 am-9:58 am

1 stop9h 33m

$249

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Tue 9/23

6:09 pm-4:20 am

1 stop8h 11m

Washington, D.C. Dulles Intl

Sat 9/27

4:34 pm-7:27 am

1 stop16h 53m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 23 results

The best insider tips for San José to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your San José to Washington, D.C. Dulles Intl Airport trip

Airports

SJO

Leave for SJO with sufficient time to clear security. Arrive at least 3 hours before your flight to avoid delays.

IAD

Use the Washington Metro Silver line for a cost-effective way to reach downtown from IAD in under 40 minutes.

Our travel experts

Marisa Garcia

Expert on SJO

Ramsey Qubein

Expert on IAD

Best time to book a flight from San José to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San José 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 San José to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from San José, San José Province to Washington, D.C. Dulles Intl Airport?

The best time to book flights from San José, San José Province to Washington, D.C. Dulles Intl Airport is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from San José, San José Province to Washington, D.C. Dulles Intl Airport (average of $292). Flying from San José, San José Province to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 SJO to IAD?

Unlike at noon, when flights are generally more expensive, you can save up to 37% on flights from San José, San José Province to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the afternoon.

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

Travelers seeking maximum savings on their San José, San José Province to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at noon 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 San José, San José Province to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Peruse reviews from past customers who have flown with Copa Airlines, United Airlines, and American Airlines from San José to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Copa Airlines

7.6

Good

1,531 reviews

Reviews

1 / 20

4.0

Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.

Copa Airlines

7.6

Good

1,531 reviews

Copa Airlines

7.6

Good

1,531 reviews

Reviews

1 / 20

4.0

Okay

Paul,Jun 2025

PTY - MIA

United Airlines

7.4

Good

8,937 reviews

Copa Airlines

7.6

Good

1,531 reviews

Reviews

1 / 20

4.0

Okay

Paul,Jun 2025

PTY - MIA

American Airlines

7.2

Good

10,000 reviews

Copa Airlines

7.6

Good

1,531 reviews

Reviews

1 / 20

4.0

Okay

Paul,Jun 2025

PTY - MIA

Avianca

6.7

Okay

2,436 reviews

Copa Airlines

7.6

Good

1,531 reviews

Reviews

1 / 20

4.0

Okay

Paul,Jun 2025

PTY - MIA

Related info for your journey

What airport do you fly from for flights from San José to Washington, D.C. Dulles Intl?
Most people fly from San José Juan Santamaria Intl (SJO) if they book a flight from San José to Washington, D.C. Dulles Intl. On average, Juan Santamaria Intl has 0 outbound flights to Washington, D.C. Dulles Intl per day from 5 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 San José, San José Province to Washington, D.C. Dulles Intl Airport?
There are many flights that can get you from San José, San José Province to Washington, D.C. Dulles Intl Airport in 21h 31m. Fly via United Airlines to get the fastest option. The distance from San José, San José Province to Washington, D.C. Dulles Intl Airport is about 2042 mi.
What are the cheapest airlines flying from San José, San José Province to Washington, D.C. Dulles Intl Airport round-trip?
According to our current data, Volaris El Salvador ($194), United Airlines ($218), and American Airlines ($226) offers the cheapest pricing from San José, San José Province to Washington, D.C. Dulles Intl Airport. Volaris El Salvador is 39% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest flights from San José, San José Province to Washington, D.C. Dulles Intl Airport?
The cheapest flight price from San José, San José Province to Washington, D.C. Dulles Intl Airport is $138. On average you can expect to pay $239. The most popular route, (San José Juan Santamaria Intl - Washington, D.C. Dulles Intl), can usually be booked for $218.
Can I find deals for flights from San José to Dulles Intl that include hotel bookings?
Yes. In addition to deals on San José to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San José to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San José to Dulles Intl.
Can I find deals for business class flights from San José to Dulles Intl?
Yes. Cheapflights offers flight deals from San José to Dulles Intl 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 San José, San José Province to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from San José, San José Province to Washington, D.C. Dulles Intl Airport (average of $292). Flying from San José, San José Province to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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

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Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from San José to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Volaris El Salvador	Cheapest$194	Average$271	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$218	Average$400	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$226	Average$266	FlexibilityNo cancel fee	On-time71%
Avianca	Cheapest$229	Average$355	FlexibilityNo cancel fee	On-time71%
Copa Airlines	Cheapest$286	Average$361	FlexibilityNo cancel fee	On-time70%

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$141+ Cheap flights from San José (SJO) to Dulles Intl (IAD)

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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San José to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl are usually found in October or July, booked 65 days in advance, depart on a Friday or Monday and return on a Tuesday

Cheap flight deals from San José to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San José to Dulles Intl

Cheapest flights from San José to Dulles IntlExplore the most affordable flight options available from San José to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from San José to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San José to Washington, D.C. Dulles Intl Airport that are best for you.

The best insider tips for San José to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your San José to Washington, D.C. Dulles Intl Airport trip

Airports

SJO

IAD

Our travel experts

Best time to book a flight from San José to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San José with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San José to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from San José, San José Province to Washington, D.C. Dulles Intl Airport?

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

What is the cheapest time of day to fly from SJO to IAD?

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

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

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from San José to Dulles Intl. 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 from for flights from San José to Washington, D.C. Dulles Intl?

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

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

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

Can I find deals for flights from San José to Dulles Intl that include hotel bookings?

How can I find direct flights from San José to Dulles Intl?

Can I find deals for business class flights from San José to Dulles Intl?

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Cheapest flights from San José to Dulles Intl
Explore the most affordable flight options available from San José to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.