SJO - IAD

$170 Find Cheap Flights from San José to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San José to Dulles Intl departing on 5/14. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San José to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San José to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$272
Typical prices: $338-$462
Volaris El Salvador, Frontier
pe 4/3pe 4/10
SJO - IAD • 1 stop
Cheapest non-stop
$306
Avianca
ti 5/5to 5/14
SJO - IAD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Avianca's Classic fare includes a checked bag and seat.
United's Economy Plus offers extra legroom benefits.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
Sat, Sun
You can fly direct with United Airlines. Average duration is 4h 47m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Cheapest • from $286 (round-trip)
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $237 (round-trip)
Shortest trip • 8h 01m (one-way)
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 87% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from San José to Dulles Intl (SJO-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San José to Dulles Intl 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

pe, huhti 3 - pe, huhti 10
Multiple Airlines Logo
4:17 pm - 12:37 pm
SJO
-
IAD
18h 20m
1 stop
Multiple Airlines Logo
8:30 pm - 9:01 am
IAD
-
SJO
14h 31m
1 stop
$272Multiple Airlines
pe, huhti 3 - pe, huhti 10
Multiple Airlines Logo
4:17 pm - 12:37 pm
SJO
-
IAD
18h 20m
1 stop
Multiple Airlines Logo
8:30 pm - 9:01 am
IAD
-
SJO
14h 31m
1 stop
$282Multiple Airlines
ti, huhti 28 - la, Touko 2
Avianca Logo
5:25 pm - 2:15 am
SJO
-
IAD
6h 50m
1 stop
Avianca Logo
3:40 am - 8:30 am
IAD
-
SJO
6h 50m
1 stop
$286Avianca
ti, huhti 28 - la, Touko 2
Avianca Logo
3:10 pm - 2:45 am
SJO
-
IAD
9h 35m
1 stop
Avianca Logo
3:40 am - 8:30 am
IAD
-
SJO
6h 50m
1 stop
$288Avianca
ke, syys 16 - ke, syys 23
Avianca Logo
3:10 pm - 2:45 am
SJO
-
IAD
9h 35m
1 stop
Avianca Logo
5:35 pm - 11:40 pm
IAD
-
SJO
8h 05m
1 stop
$289Avianca
to, heinä 9 - ma, heinä 27
Avianca Logo
4:35 pm - 2:15 am
SJO
-
IAD
7h 40m
1 stop
Avianca Logo
3:40 am - 8:30 am
IAD
-
SJO
6h 50m
1 stop
$296Avianca
pe, Touko 1 - la, Touko 9
Avianca Logo
3:10 pm - 4:20 am
SJO
-
IAD
11h 10m
1 stop
Avianca Logo
3:40 am - 8:30 am
IAD
-
SJO
6h 50m
1 stop
$298Avianca
ma, Touko 11 - to, Touko 14
Copa Airlines Logo
6:19 pm - 4:21 am
SJO
-
IAD
8h 02m
1 stop
Copa Airlines Logo
4:38 pm - 7:09 am
IAD
-
SJO
16h 31m
1 stop
$299Copa Airlines
ke, huhti 22 - ti, huhti 28
Copa Airlines Logo
5:56 pm - 4:22 am
SJO
-
IAD
8h 26m
1 stop
Copa Airlines Logo
2:21 am - 9:05 am
IAD
-
SJO
8h 44m
1 stop
$300Copa Airlines
ke, Touko 27 - ma, kesä 1
Copa Airlines Logo
2:59 pm - 4:21 am
SJO
-
IAD
11h 22m
1 stop
Copa Airlines Logo
4:38 pm - 7:12 am
IAD
-
SJO
16h 34m
1 stop
$301Copa Airlines
Booking Insights

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

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

How much is a round-trip flight from San José to Washington, D.C. Dulles Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San José to Washington, D.C. Dulles Intl Airport departing in April.

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

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

For San José to Washington Dulles Airport, Friday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Washington Dulles Airport back to San José, the best deals are generally found on Tuesday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San José to Washington, D.C. Dulles Intl Airport, 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 San José to Washington, D.C. Dulles Intl Airport is November, where tickets cost $239 (return) on average. On the other hand, the most expensive months are March and April, where the average cost of round-trip tickets is $400 and $379 respectively.

Can I save money by flying with a layover from San José to Washington, D.C. Dulles Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $255, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San José to Washington, D.C. Dulles Intl Airport, 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 San José to Washington, D.C. Dulles Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Expert advice

Expert advice for your flight from San José to Dulles Intl

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on Avianca and SJO

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.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and IAD

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.

Good to know

Low seasonJune
Cheapest flight$170
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from San José to Washington Dulles Airport

When to book flights from San José to Dulles Intl

Are your dates flexible? Find out the best times to travel from San José to Dulles Intl 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 San José to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from San José to Washington, D.C. Dulles Intl Airport was $170 for a one-way ticket and $272 for a round-trip.

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

    A passport is required to fly from San José to Washington Dulles Airport.

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

    Iberia, Lufthansa, American Airlines, and Air Canada offer inflight Wi-Fi service on the San José to Washington Dulles Airport flight route.

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

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

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

    oneworld, and Star Alliance are the airline alliances operating flights between San José and Washington Dulles Airport, with oneworld being the most commonly used for this route.

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

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

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

    The two airlines most popular with KAYAK users for flights from San José to Washington, D.C. are Copa Airlines and United Airlines. With an average price for the route of $338 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 $281 and an overall rating of 7.4.

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

    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 San José to Washington Dulles Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from San José 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 San José to Washington Dulles Airport?

    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 Washington Dulles Airport with an airline and back to San José with another airline. Booking your flights between San José and IAD 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 San José to Washington Dulles Airport?

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $201 or less one-way.

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

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl.
Find which airlines fly direct from San José Juan Santamaria Intl Airport to Washington, D.C. Dulles Intl Airport, which days they fly and book direct flights.

Direct departures

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

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

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

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 4 airlines serving from San José to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from San José to Washington, D.C.. 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 San José to Dulles Intl? 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 1575 reviews
6.8Food
7.8Boarding
7.4Comfort
8.1Crew
6.8Entertainment
Airline reviews

Friendly crew, good food options, food not the best and seats not as comfy but that’s typical.

10.0 ExcellentSasha, Mar 2026
ASU - PTY
Read more Copa Airlines reviews

Friendly crew, good food options, food not the best and seats not as comfy but that’s typical.

The food is terrible I ask for water never got transport my mother we’re late and my sister from Lima was the worst waiting to long for wheelchair

Do not book it’s a scam! They stole $1200 from me

Flight got delayed; had to go through security three times.

A lot things happened in this trip.The fly should be less stress.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

The flight was good overall. Everything went smoothly, although the landing was a bit rough. Still, it was a pleasant experience

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

Some of the Air hostesses are not that friendly. Need improvement

They were super friendly bumped me up to exit row free of charge, All flight legs were on time

Offered to check carry on to final destination. This is the most absurd thing in the world. I'm carrying on because I need what is in the carry-on. I'm okay with picking up at next stop but then I will be on much larger plane that can accommodate it. Also, if there is ever a change to your flight. Go to the airport and have the people there fix your ticket. Don't do it over the phone or online with United they screwed us up and ended up with flights for our last leg that took off before our first leg.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

Fine not above and beyond as I had a connection that was delayed due to maintenance

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

Great other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

It was great. Smooth flight, comfortable, left on time and landed on time.

Horrible experience upon landing. Probably more due to DCA utter incompetence than AA.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

Flight has been delayed every time I've ever taken it. Seats uncomfortable. Children behind me yelling the entire flight. Some of this is out of their control but overall just consistently not a great experience.

Poor communication ahead of time about flight delays and old planes/other equipment.

Never going to fly your airline again if it can be avoided.

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

Other than nearly three hour delay for maintenance issues, everything went smooth

Snow delayed boarding several times, which I understand happens. Issue I had was that after we did board, pilot told us we were going to roll out to be de-iced, then on our way. We were de-iced once, taxied to the tarmac and then stopped. Sat for another 30 minutes or so, the another de-icing. Then we rolled out to a parking spot, only to sit for another hour due to a traffic stop in DCA, which I'm confident they knew would happen before we boarded. Pilot gave no updates other than we had to hold, attendants did speak to the crew, but when asked, said the pilot would be updating us. We on the ground in the plane waiting for over 2 hours. They did communicate that bathrooms would be open, but no other news until we left. Would have been better to be up front about status.

Flight was delayed. Not much information on when the flight would take off. Eventually we were told it was maintenance. App was not giving updates.

I had bad experiences before now was excellent I am glad they have business class again

Horrible experience with Avianca, they delayed their flight and when we arrived to NYC, AVIANCA took 1 hr y 30 mins to park the airplane and all passenger get off the plane, it made me lost all my trains to get back home and I came back to my place at 3 am instead of 12 am. On the top of that their plane seat are so uncomfortable and is not enough space and killed my legs and knees, Avianca used to be good when it was a Colombian company, now after Brasilian company bought them, their service quality is bad and their flights are delayed and oversold.

It was delayed and I lost my connection flight to Cali and I missed my Mom's funeral and avianca lost my check in luggage

Not good, tried to purchase a first class upgrade and they couldn’t get it done. Was super uncomfortable the whole time.

We waited for one hour to deboard the plane after landing. That could be better

I handed in my suitcase in perfect condition at SAL Airport. And in MIA Airport I received it with one corner broken and the wheels bent.

I like the crew members they're very friendly. Clean plane. The flight was on time. I dont like the comfort my car seat its better that the plane seats. They charge for everything. This airline was very good. Now it's a low cost airline

6 hour flight and have to pay for everything 100 dollars to add a carry-on bag is insane

Did not fly with Pakistan International Airlines. Have never flown with Pakistan International Airlines.

Boarding, crew were excellent, food was ok and entertainment need to improve

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

Information on your arrival and departure airports