How often are flights from San José to Washington, D.C. delayed?

About 16% of weekly flights between San José and Washington, D.C. have experienced delays in the past year, with the average delay time being 126 minutes.

Which airline has the best punctuality record on San José to Washington, D.C. flights?

Over the last year, Avianca have had the lowest number of delays on this route, with just 14% of flights being delayed.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

What is the most punctual flight time for San José to Washington, D.C. flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

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

Airlines like Avianca and United Airlines fly from San José to Washington, D.C. Dulles Intl Airport in about 8h 55m. The time it takes to get you to your destination can typically vary by up to 15m. There are 2042 mi between San José and Washington, D.C. Dulles Intl Airport. Both multi-stop and nonstop flights can be found to your destination and back.

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

Cheapflights users have booked flights from San José to Washington, D.C. Dulles Intl Airport round-trip from $201. Other airlines that can offer you cheap pricing are United Airlines, from $216, and American Airlines, from $225. Avianca is currently priced 35% below the average price you’ll pay for this route.

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

For one-way options, check prices for Avianca. According to our data, you can fly for as low as $132. Users have also found prices from $135 and $136 on Volaris El Salvador and American Airlines, respectively.

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

The cheapest flight price from San José to Washington, D.C. Dulles Intl Airport is $115. On average you can expect to pay $232. The most popular route, (San José Juan Santamaria Intl - Washington, D.C. Dulles Intl), can usually be booked for $185.

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

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

Most accurate provider : When it comes to deals on San José-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San José-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San José-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San José-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams 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 San José-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$119+ Flights from San José to Washington, D.C. Dulles Intl Airport

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Cheapflights Tip: The best prices from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl are usually found in November or October, booked 70 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap 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 December 12, 2025.

Sat 12/132:30 pmSJO - IAD

Nonstop4h 43mUnited Airlines

Tue 3/3110:05 pmIAD - SJO

1 stop16h 16mUnited Airlines

Deal found 12/11

$200

Tue 12/232:05 pmSJO - IAD

1 stop9h 10mUnited Airlines

Sat 1/310:15 pmIAD - SJO

1 stop25h 17mUnited Airlines

Deal found 12/10

$206

Mon 12/155:10 pmSJO - IAD

Nonstop4h 25mAvianca

Sat 1/1711:55 pmIAD - SJO

Nonstop4h 55mAvianca

Deal found 12/10

$218

Tue 12/167:50 pmSJO - IAD

1 stop6h 20mAvianca

Wed 1/143:00 amIAD - SJO

1 stop9h 25mAvianca

Deal found 12/10

$221

Wed 12/174:30 pmSJO - IAD

1 stop8h 10mAvianca

Tue 1/61:30 amIAD - SJO

1 stop7h 15mAvianca

Deal found 12/11

$228

Sat 12/136:00 amSJO - IAD

2 stops17h 01mAmerican Airlines

Tue 3/315:00 amIAD - SJO

2 stops16h 55mAmerican Airlines

Deal found 12/11

$230

Sat 12/135:10 pmSJO - IAD

Nonstop4h 25mAvianca

Mon 3/302:35 amIAD - SJO

Nonstop7h 05mAvianca

Deal found 12/11

$234

Mon 12/291:50 pmSJO - IAD

2 stops17h 52mAmerican Airlines

Sun 1/115:46 pmIAD - SJO

2 stops21h 08mAmerican Airlines

Deal found 12/11

$235

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 December 12, 2025.

Thu 2/55:00 amSJO - IAD

1 stop8h 55mAvianca

Mon 2/94:15 pmIAD - SJO

1 stop8h 25mAvianca

Deal found 12/11

$201

Tue 12/232:05 pmSJO - IAD

1 stop9h 10mUnited Airlines

Sat 1/310:15 pmIAD - SJO

1 stop25h 17mUnited Airlines

Deal found 12/11

$206

Thu 2/56:38 amSJO - IAD

1 stop8h 53mAmerican Airlines

Mon 2/95:46 pmIAD - SJO

2 stops19h 57mAmerican Airlines

Deal found 12/11

$235

Fri 12/262:05 pmSJO - IAD

1 stop9h 10mUnited Airlines

Sat 1/310:15 pmIAD - SJO

1 stop25h 17mUnited Airlines

Deal found 12/10

$206

Thu 12/252:05 pmSJO - IAD

1 stop9h 10mUnited Airlines

Sat 1/310:15 pmIAD - SJO

1 stop25h 17mUnited Airlines

Deal found 12/10

$206

Thu 1/226:30 amSJO - IAD

1 stop14h 48mUnited Airlines

Wed 1/287:45 pmIAD - SJO

1 stop13h 47mUnited Airlines

Deal found 12/10

$210

Sun 5/36:00 amSJO - IAD

1 stop16h 44mUnited Airlines

Tue 5/510:11 pmIAD - SJO

1 stop16h 10mUnited Airlines

Deal found 12/11

$212

Sun 5/36:00 amSJO - IAD

1 stop22h 36mUnited Airlines

Wed 5/66:00 amIAD - SJO

1 stop8h 21mUnited Airlines

Deal found 12/11

$212

Fri 2/68:45 amSJO - IAD

1 stop11h 04mUnited Airlines

Thu 2/198:15 amIAD - SJO

1 stop13h 24mUnited Airlines

Deal found 12/11

$217

Mon 5/48:45 amSJO - IAD

1 stop20h 21mUnited Airlines

Sat 5/96:00 amIAD - SJO

1 stop8h 21mUnited Airlines

Deal found 12/11

$254

Tue 5/58:45 amSJO - IAD

1 stop14h 39mUnited Airlines

Fri 5/86:00 amIAD - SJO

1 stop7h 38mUnited Airlines

Deal found 12/11

$254

Last-minute flights from San José to Dulles Intl
Discover last-minute flight deals from San José to Dulles Intl. Data last updated December 12, 2025 and is based on user searches.

Sat 12/132:30 pmSJO - IAD

Nonstop4h 43mUnited Airlines

Tue 3/3110:05 pmIAD - SJO

1 stop16h 16mUnited Airlines

Deal found 12/11

$200

Mon 12/155:10 pmSJO - IAD

Nonstop4h 25mAvianca

Sat 1/1711:55 pmIAD - SJO

Nonstop4h 55mAvianca

Deal found 12/10

$218

Tue 12/232:05 pmSJO - IAD

1 stop9h 10mUnited Airlines

Sat 1/310:15 pmIAD - SJO

1 stop25h 17mUnited Airlines

Deal found 12/10

$206

Tue 1/275:10 pmSJO - IAD

Nonstop4h 25mAvianca

Sat 1/3111:55 pmIAD - SJO

Nonstop4h 55mAvianca

Deal found 12/11

$195

Wed 1/284:15 pmSJO - IAD

1 stop6h 55mAvianca

Mon 2/24:30 amIAD - SJO

1 stop10h 10mAvianca

Deal found 12/11

$211

Wed 1/287:50 pmSJO - IAD

1 stop6h 20mAvianca

Sat 1/3111:55 pmIAD - SJO

Nonstop4h 55mAvianca

Deal found 12/10

$213

Thu 1/298:45 amSJO - IAD

1 stop12h 33mUnited Airlines

Sun 2/17:45 pmIAD - SJO

1 stop13h 47mUnited Airlines

Deal found 12/11

$201

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 December 12, 2025.

Thu 5/143:05 pmSJO - IAD

1 stop9h 40mAvianca

Deal found 12/10

$119

Thu 3/194:15 pmSJO - IAD

1 stop6h 55mAvianca

Deal found 12/11

$120

Fri 1/305:00 amSJO - IAD

2 stops18h 10mAvianca

Deal found 12/11

$121

Thu 2/266:00 amSJO - IAD

1 stop17h 10mAvianca

Deal found 12/10

$122

Mon 3/24:17 pmSJO - IAD

1 stop18h 10mVolaris El Salvador

Deal found 12/11

$123

Mon 3/164:17 pmSJO - IAD

1 stop18h 10mVolaris El Salvador

Deal found 12/10

$124

Tue 5/54:20 pmSJO - IAD

1 stop6h 55mAvianca

Deal found 12/11

$126

Fri 2/1312:35 pmSJO - IAD

1 stop21h 51mUnited Airlines

Deal found 12/10

$127

Wed 2/182:42 pmSJO - IAD

1 stop19h 45mVolaris El Salvador

Deal found 12/10

$128

Tue 3/35:00 pmSJO - IAD

1 stop17h 27mMultiple Airlines

Deal found 12/11

$130

Wed 1/285:00 amSJO - IAD

2 stops18h 10mAvianca

Deal found 12/11

$131

Find flight deals from San José to Dulles Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$195 (Avianca)
One-way from	$119 (FlightHub)
Popular in	April
Cheapest in	November
Average price	$337
Good round-trip deal	$216 or less
Good one-way deal	$116 or less

Provider with most accurate pricing for San José Juan Santamaria Intl-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Washington, D.C. Dulles Intl flights.

Search Deals

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($30 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 December 2025

Search Deals

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

Search Deals

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

Search Deals

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

Thu 2/5

5:00 am-2:55 pm

1 stop8h 55m

Washington, D.C. Dulles Intl

Mon 2/9

4:15 pm-11:40 pm

1 stop8h 25m

$201

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Tue 12/23

2:05 pm-12:15 am

1 stop9h 10m

Washington, D.C. Dulles Intl

Sat 1/3

10:15 pm-10:32 pm

1 stop25h 17m

$206

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Fri 12/26

2:05 pm-12:15 am

1 stop9h 10m

Washington, D.C. Dulles Intl

Sat 1/3

10:15 pm-10:32 pm

1 stop25h 17m

$206

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Thu 12/25

2:05 pm-12:15 am

1 stop9h 10m

Washington, D.C. Dulles Intl

Sat 1/3

10:15 pm-10:32 pm

1 stop25h 17m

$206

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Thu 1/22

6:30 am-10:18 pm

1 stop14h 48m

Washington, D.C. Dulles Intl

Wed 1/28

7:45 pm-8:32 am

1 stop13h 47m

$210

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Sun 5/3

6:00 am-12:44 am

1 stop16h 44m

Washington, D.C. Dulles Intl

Tue 5/5

10:11 pm-12:21 pm

1 stop16h 10m

$212

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Sun 5/3

6:00 am-6:36 am

1 stop22h 36m

Washington, D.C. Dulles Intl

Wed 5/6

6:00 am-12:21 pm

1 stop8h 21m

$212

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Fri 2/6

8:45 am-8:49 pm

1 stop11h 04m

Washington, D.C. Dulles Intl

Thu 2/19

8:15 am-8:39 pm

1 stop13h 24m

$217

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Thu 2/5

6:38 am-4:31 pm

1 stop8h 53m

Washington, D.C. Dulles Intl

Mon 2/9

5:46 pm-12:43 pm

2 stops19h 57m

$235

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Mon 5/4

8:45 am-7:06 am

1 stop20h 21m

Washington, D.C. Dulles Intl

Sat 5/9

6:00 am-12:21 pm

1 stop8h 21m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 22 results

Compare providers for flights from San José to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San José to Dulles Intl in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
AranGrant	Price Accuracy2 stars	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 San José-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San José-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San José-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San José-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams 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 San José-Washington, D.C. Dulles Intl Airport 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 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

Prices

Delays

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

Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from San José to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, July is the cheapest month in which you can book a flight from San José to Washington, D.C. Dulles Intl Airport (average of $142). Flying from San José to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $232). 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 25% on flights from San José 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 to Washington, D.C. Dulles Intl Airport?

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

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

Reviews of airlines servicing Dulles Intl

Peruse reviews from past customers who have flown with Delta, Copa Airlines, and United 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.

Delta

7.9

Good

8,009 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

8,009 reviews

Delta

7.9

Good

8,009 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Copa Airlines

7.6

Good

1,558 reviews

Delta

7.9

Good

8,009 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,095 reviews

Delta

7.9

Good

8,009 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

American Airlines

7.2

Good

11,048 reviews

Delta

7.9

Good

8,009 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Avianca

6.6

Okay

2,478 reviews

Delta

7.9

Good

8,009 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

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 to Washington, D.C. Dulles Intl Airport?
Airlines like Avianca and United Airlines fly from San José to Washington, D.C. Dulles Intl Airport in about 8h 55m. The time it takes to get you to your destination can typically vary by up to 15m. There are 2042 mi between San José and Washington, D.C. Dulles Intl Airport. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from San José to Washington, D.C. Dulles Intl Airport round-trip?
Cheapflights users have booked flights from San José to Washington, D.C. Dulles Intl Airport round-trip from $201. Other airlines that can offer you cheap pricing are United Airlines, from $216, and American Airlines, from $225. Avianca is currently priced 35% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from San José to Washington, D.C. Dulles Intl Airport one-way?
For one-way options, check prices for Avianca. According to our data, you can fly for as low as $132. Users have also found prices from $135 and $136 on Volaris El Salvador and American Airlines, respectively.
What are the cheapest flights from San José to Washington, D.C. Dulles Intl Airport?
The cheapest flight price from San José to Washington, D.C. Dulles Intl Airport is $115. On average you can expect to pay $232. The most popular route, (San José Juan Santamaria Intl - Washington, D.C. Dulles Intl), can usually be booked for $185.
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 to Washington, D.C. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from San José to Washington, D.C. Dulles Intl Airport (average of $142). Flying from San José to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $232). 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.

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Top 5 airlines flying from San José to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Avianca	Cheapest$202	Average$348	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$216	Average$281	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$225	Average$230	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$234	Average$285	FlexibilityNo cancel fee	On-timeN/A
Copa Airlines	Cheapest$286	Average$348	FlexibilityNo cancel fee	On-time70%

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$119+ 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 5/14. 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

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Cheapflights Tip: The best prices from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl are usually found in November or October, booked 70 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap 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 December 12, 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 December 12, 2025.

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

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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 to Washington, D.C. Dulles Intl Airport?

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

How often are flights from San José to Washington, D.C. delayed?

What is the most punctual flight time for San José to Washington, D.C. flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on San José to Washington, D.C. flights?

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

AI-powered summary based on content written by travel experts. AI can make mistakes.

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

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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?

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

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

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

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

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What is the cheapest month to book a flight from San José to 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 December 12, 2025.