IAD - SJO

$95 Find Cheap Flights from Washington Dulles Airport to San José

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to San José departing on 6/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San José.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San José.
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Flights Deals

Cheap Flights from Dulles Intl to San José

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to San José that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Dulles Intl to San José

KAYAK's recommended round-trip deals from the most popular airlines that fly from Dulles Intl to San José.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
2:05 pm - 12:22 pmIAD-SJO
24h 17m1 stop
 Logo
5:00 pm - 12:19 pmSJO-IAD
17h 19m1 stop
Tue, Sep 2 - Tue, Sep 9
Avianca Logo
2:35 am - 7:40 amIAD-SJO
7h 05m1 stop
Avianca Logo
5:10 pm - 11:45 pmSJO-IAD
4h 35mnonstop
$216Avianca
Find Deal
Mon, Jun 2 - Sat, Jun 14
Volaris El Salvador Logo
2:22 am - 1:27 pmIAD-SJO
13h 05m1 stop
Volaris El Salvador Logo
1:08 pm - 12:20 pmSJO-IAD
21h 12m1 stop
$221Volaris El Salvador
Find Deal
Tue, May 13 - Wed, Jun 4
Volaris El Salvador Logo
2:22 am - 12:22 pmIAD-SJO
12h 00m1 stop
Volaris El Salvador Logo
1:08 pm - 12:20 pmSJO-IAD
21h 12m1 stop
$222Volaris El Salvador
Find Deal
Tue, Jun 3 - Wed, Jun 11
American Airlines Logo
8:06 pm - 11:27 amIAD-SJO
17h 21m2 stops
American Airlines Logo
11:59 pm - 12:02 amSJO-IAD
22h 03m2 stops
$237American Airlines
Find Deal
Sat, May 17 - Fri, May 23
American Airlines Logo
8:02 pm - 11:27 amIAD-SJO
17h 25m2 stops
American Airlines Logo
1:00 pm - 11:01 amSJO-IAD
20h 01m2 stops
$239American Airlines
Find Deal
Tue, May 13 - Tue, Aug 26
Copa Airlines Logo
4:34 pm - 7:35 amIAD-SJO
17h 01m1 stop
Copa Airlines Logo
5:52 am - 12:29 amSJO-IAD
16h 37m1 stop
$242Copa Airlines
Find Deal
Wed, May 14 - Tue, May 20
Copa Airlines Logo
4:34 pm - 8:20 amIAD-SJO
17h 46m1 stop
Copa Airlines Logo
2:53 pm - 12:29 amSJO-IAD
7h 36m1 stop
$244Copa Airlines
Find Deal
Wed, May 14 - Wed, Jun 4
United Airlines Logo
6:00 am - 7:37 pmIAD-SJO
15h 37m1 stop
United Airlines Logo
8:45 am - 12:45 amSJO-IAD
14h 00m1 stop
$354United Airlines
Find Deal
Tue, May 13 - Fri, May 30
United Airlines Logo
10:32 pm - 10:11 amIAD-SJO
13h 39m1 stop
United Airlines Logo
5:30 am - 11:58 pmSJO-IAD
16h 28m1 stop
$356United Airlines
Find Deal
Mon, Jun 2 - Mon, Jun 16
Expert advice

Expert advice for your flight from Dulles Intl to San José

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Avianca

Avianca's Classic fare includes a carry-on, personal item, and free checked bag.


Avianca's LifeMiles program offers attractive redemption rates, often better than other Star Alliance partners.

United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy seats.


United's Wi-Fi offers free messaging; T-Mobile customers get free streaming Wi-Fi on flights.

Airports
IAD

Dulles offers the AeroTrain and mobile lounges for quick transit between terminals. Plan your route using an airport map for a smoother experience.

Read more about IADby Stefanie Waldek
SJO

Arrange ground transportation in advance for easier airport departure. Hotels often provide valuable information and may offer transportation services.

Read more about SJOby Mark Chesnut
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on Avianca and SJO

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Useful Info

KAYAK's insights & trends for Dulles Intl to San José flights

Get data-powered insights and trends into flights from Dulles Intl to San José to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington Dulles Airport to San José?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to San José clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Washington Dulles Airport to San José, look for departures on Tuesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from San José, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to San José, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to San José is September, where tickets cost $303 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $673 and $485 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to San José, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to San José, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonOctober
High seasonApril
Cheapest flight$95
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Washington Dulles Airport to San José

When to book flights from Dulles Intl to San José

Are your dates flexible? Find out the best times to travel from Dulles Intl to San José based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to San José flights

  • Which other nearby cities are served by the Juan Santamaría International Airport (SJO)?

    Juan Santamaría International Airport (SJO) primarily serves the capital city of Costa Rica, San José. However, it is also the main international gateway for travelers visiting various other cities and destinations within Costa Rica. They include Alajuela, Heredia, Cartago, and Jaco.

  • What are the most popular connecting routes between Washington Dulles Airport (IAD) and Juan Santamaría International Airport (SJO)?

    Many travelers between Washington Dulles Airport (IAD) and Juan Santamaría International Airport (SJO) connect through major US hubs such as Miami (MIA) or Dallas (DFW). These hubs offer multiple daily flights to SJO, providing convenient options for connecting passengers. Some connect through other Central American cities, such as Panama (PTY) or San Salvador (SAL).

  • What are the most eco-friendly airlines offering flights from Washington Dulles International Airport (IAD) to Juan Santamaría International (SJO)?

    Consider Delta, American Airlines, or Copa Airlines if you want to travel sustainably from Washington Dulles International Airport (IAD) to Juan Santamaría International (SJO). Delta has taken steps to reduce emissions and improve fuel efficiency. They've invested in modernizing their fleet, including more fuel-efficient aircraft. They also have a carbon offset program and initiatives to minimize waste.

  • Do airlines offer family services on trips between Washington Dulles International Airport (IAD) and Juan Santamaría International (SJO)?

    American Airlines, Copa Airlines, and Avianca are parents’ favorites between Washington Dulles International Airport (IAD) and Juan Santamaría International Airport (SJO). They offer in-flight entertainment options that often include a selection of family-friendly movies, TV shows, and games to keep children entertained during the journey.

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to San José was $95 for a one-way ticket and $215 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and San José?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in San José.

  • Which airports will I be using when flying from Washington Dulles Airport to San José?

    Washington Dulles Airport and San José are both served by 1 main airport. You will leave Washington Dulles Airport from Washington, D.C. Dulles Intl and will be arriving at San José Juan Santamaria Intl.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to San José?

    Delta, JetBlue, and Alaska Airlines offer inflight Wi-Fi service on the Washington Dulles Airport to San José flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to San José?

    The Airbus A320neo is the aircraft model that flies most regularly on the Washington Dulles Airport to San José flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to San José?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and San José.

  • On which days can I fly direct from Washington Dulles Airport to San José?

    You can catch a nonstop flight from Washington Dulles Airport to San José on Tuesday, Wednesday, Friday, and Sunday.

  • Which is the best airline for flights from Washington, D.C. to San José, Copa Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to San José are Copa Airlines and United Airlines. With an average price for the route of $411 and an overall rating of 7.5, Copa Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $669 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to San José?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to San José.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to San José?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San José from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to San José?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San José with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SJO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to San José?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San José from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to San José

  • Looking for a cheap flight? 25% of our users found flights on this route for $122 or less one-way and $319 or less round-trip.
  • United Airlines is the primary carrier that operates the most flights from Washington Dulles International Airport (IAD). United Airlines has a major hub at IAD, and it offers a wide range of domestic and international flights from this airport, including to Juan Santamaría International Airport (SJO). Choosing this carrier lets you enjoy accelerated services and excellent amenities at IAD.
  • Several airlines that operate flights between Washington Dulles International Airport (IAD) and Juan Santamaría International Airport (SJO) in San Jose, Costa Rica, offer seat upgrades. These airlines might include major carriers like United Airlines and American Airlines, which allow passengers to move from the economy to business or first class cabins.
  • Major airlines operating between Washington Dulles International Airport (IAD) and Juan Santamaría International Airport (SJO), such as United Airlines and American Airlines, have put policies and services in place to assist passengers with disabilities. These services include wheelchair assistance, priority boarding, and special seating.
  • Although Ronald Reagan Airport (DCA) and Baltimore Airport (BWI) serve Washington, D.C., Washington Dulles International Airport (IAD) is a major gateway for international travel. It offers a wider range of international flights and connections to various destinations around the world compared to BWI and DCA. Still, the facility is known for its spacious terminals and modern facilities, providing a comfortable travel experience for passengers.
  • Passengers traveling in business and first class between Washington Dulles International Airport (IAD) and Juan Santamaría International Airport (SJO) experience more spacious and comfortable seating arrangements, with more legroom and wider seats that often recline fully into lie-flat beds. In addition, passengers will enjoy gourmet dining options tailored to their preferences. Meals may be served on demand, and some airlines offer the opportunity to pre-select your meal before the flight.

Prefer to fly direct from Washington Dulles Airport to San José?

Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to San José Juan Santamaria Intl Airport, which days they fly and book direct flights.

Direct departures

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

Tuesday

Avianca

Avianca

Wednesday

Avianca

Avianca

Friday

Avianca

Avianca

Sunday

Avianca

Avianca

See more direct flights

Direct returns

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

Monday

Avianca

Avianca

Tuesday

Avianca

Avianca

Thursday

Avianca

Avianca

Saturday

Avianca

Avianca

See more direct flights
See more direct flights

Top 5 airlines serving from Dulles Intl to San José

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to San José. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to San José? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Copa AirlinesOverall score based on 1414 reviews
7.8Boarding
6.8Entertainment
7.4Comfort
6.8Food
8.1Crew
Airline reviews

We were in transit from Lima (flight at 1.10am) and we were in stand by in our flight from Panama to Washington. We wait from 4.30 am to 18.30pm in the Airport. The company give us 2 x 15 dollars for eat during the day and a personnal travel voucher of 400 dollars each. Do they buy food one time something in the Airport ??? And one of us live in France so the voucher is not usable. More than 24 hours travel !! And our place were near the toilets, with 8 children around us. The boy behind my seat stamped his feet on my back all the flight. Really Wonder full ! So we are totally unhappy with our travel. Thanks Copa Airlines....

2.0 MediocreCec, Apr 2025PTY - IAD
Read more Copa Airlines reviews

We were in transit from Lima (flight at 1.10am) and we were in stand by in our flight from Panama to Washington. We wait from 4.30 am to 18.30pm in the Airport. The company give us 2 x 15 dollars for eat during the day and a personnal travel voucher of 400 dollars each. Do they buy food one time something in the Airport ??? And one of us live in France so the voucher is not usable. More than 24 hours travel !! And our place were near the toilets, with 8 children around us. The boy behind my seat stamped his feet on my back all the flight. Really Wonder full ! So we are totally unhappy with our travel. Thanks Copa Airlines....

My flight delayed and i misss the connection they send me to orlando no to tampa i have to pay a uber to my house

It would have been better if they don't separate families in seating. We were seated in the aile row in the middle of a family of four. It would have been better if they they seat the family of four together than separated.

I upgraded myself to Business Class at the last minute so I had a DREAMS window seat. Seeing as I've never flown Business before everything was novel and fun for me and it made the 7 hour flight much more enjoyable for sure.

It was good, plane is a bit older so seats are somewhat flat

Copa stranded us ans then tried to charge us thousands to leave Panama.

Well the airline was fine. The only thing is I was charged for a checked in luggage. But when I reserved the ticket it showed a check in bag allowed. Who can I get in contact with for reimbursement.? The airline said I had to speak to whoever I booked ticket with.

At JFK the Security line was extremely long and few checkpoints open.

Check in person said there would be lunch. We were first class passengers and lunch was chips.

Flight attendant -José? - was over the top friendly and professional. Beautiful new plane with lie flat seats in Business (worth it!)

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Friendly staff at all very easy check in and organize process

Horrible airline, upgraded to sit on seats made of stone. Staff were rude and on top of it they charge an arm and a leg for luggage 🧳 never again

The seats are the worst I upgraded to premium big mistake and it seems like no one likes there job very unpleasant

they don’t have TV Seat to Type in space

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

I receive a service for what I pay, so it is fair.

i think the flight was late because they were so strict about measuring everyone's personal items to try and charge them $119. It was really petty and made us late.

A few years ago long flights 6 hours or so used to have video screens and they offered ear phones. The food cart used to come and drinks. Now absolutely nothing. Avianca is as bad as Spirit Airlines. Avianca will now be my last choice when booking my next flight.

There isn't much space in-between seats and even water needs to be paid for during the flight.

We did not know about the bag fees until check in. They are way too high. It’s insane. We also had a huge delay and everything costed extra which was very annoying.

Lounge for business was closed. Boarding was rush and stand by. Seat for business is just the middle seat blocked and some more leg room.

Flew with our two children. Paid $380 to check two bags (one was overweight). They then left the bags behind on Sunday, December 21st, with all our family’s clothes and family Christmas presents. When we arrived at our destination they told us the bags had not arrived, and they thought (but didn’t know) they were still in Boston, but that there’d be a flight the next day and the bags would arrive the next day. The next day we found out there was no flight, now we’re hoping we get our bags before we fly back out. Meanwhile, trying to get any engagement or accurate information is a waste of time. The folks at the call center are just gatekeepers, who can’t connect with any departments that actually do things to solve a problem. Getting information is made deliberately difficult. My biggest regret is that I’ve had a number of awful experiences with Avianca traveling between the US and Colombia, and still let myself get suckered into buying these tickets because the schedule was great. Never again.

We were not aware carry-on bags cost extra until we arrived at the airport so, we were charged $240.00 for two small carry- on bags! There was a substantial fee for drinks and snacks. No wifi, or other entertainment was available. Waiting areas were crowded and uncomfortable.

COP 7,000 for a cup of mediocre coffee. I thought I was on Spirit Airlines for a minute. Otherwise the flight was fine. Nothing exceptional to report.

please see previous response; it covers the whole travel trajectory.

Everything you need to know for your flight from Dulles Intl to San José

Information on your arrival and departure airports

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