SJO - IAD

$201 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 7/27. 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
$330
Typical prices: $385-$255
Avianca, Copa Airlines
Thu 9/24Mon 9/28
SJO - IAD • 1 stop
Cheapest non-stop
$363
Typical prices: $559-$390
Avianca
Thu 9/10Mon 9/14
SJO - IAD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Avianca Classic fare adds a checked bag, carry-on, and seat selection.
United Economy Plus gives up to 6 inches more legroom than standard economy.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $333 (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 • 7h 40m (one-way)
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 87% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 12% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Thu, Sep 24 - Mon, Sep 28
Multiple Airlines Logo
1:25 pm - 12:30 am
SJO
-
IAD
9h 05m
1 stop
Multiple Airlines Logo
6:15 am - 7:37 pm
IAD
-
SJO
15h 22m
1 stop
$330Multiple Airlines
Sat, Sep 26 - Sat, Oct 3
Avianca Logo
5:25 pm - 2:15 am
SJO
-
IAD
6h 50m
1 stop
Avianca Logo
5:45 am - 11:30 am
IAD
-
SJO
7h 45m
1 stop
$333Avianca
Sun, Sep 27 - Sat, Oct 3
Avianca Logo
3:10 pm - 4:20 am
SJO
-
IAD
11h 10m
1 stop
Avianca Logo
5:45 am - 11:30 am
IAD
-
SJO
7h 45m
1 stop
$334Avianca
Thu, Oct 22 - Mon, Oct 26
Avianca Logo
5:25 pm - 2:15 am
SJO
-
IAD
6h 50m
1 stop
Avianca Logo
2:30 am - 8:35 am
IAD
-
SJO
8h 05m
1 stop
$338Avianca
Fri, Sep 11 - Mon, Sep 14
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
$339Avianca
Sun, Aug 2 - Tue, Aug 18
United Airlines Logo
7:15 am - 11:19 pm
SJO
-
IAD
14h 04m
1 stop
United Airlines Logo
10:29 pm - 7:37 pm
IAD
-
SJO
23h 08m
1 stop
$340United Airlines
Mon, Jun 29 - Mon, Jul 6
Avianca Logo
3:10 pm - 2:45 am
SJO
-
IAD
9h 35m
1 stop
Avianca Logo
5:45 am - 11:30 am
IAD
-
SJO
7h 45m
1 stop
$341Avianca
Wed, Jul 22 - Sun, Jul 26
Avianca Logo
4:35 pm - 2:15 am
SJO
-
IAD
7h 40m
1 stop
Avianca Logo
4:10 am - 8:45 am
IAD
-
SJO
6h 35m
1 stop
$342Avianca
Wed, Aug 5 - Thu, Aug 13
United Airlines Logo
8:45 am - 5:53 am
SJO
-
IAD
19h 08m
1 stop
United Airlines Logo
6:35 pm - 7:15 am
IAD
-
SJO
14h 40m
1 stop
$343United Airlines
Tue, Oct 27 - Sat, Nov 7
United Airlines Logo
7:45 am - 9:12 pm
SJO
-
IAD
11h 27m
1 stop
United Airlines Logo
8:57 am - 12:55 pm
IAD
-
SJO
4h 58mnonstop
$348United 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 September.

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, Thursday 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 Thursday, 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 $258 (return) on average. On the other hand, the most expensive months are April and March, where the average cost of round-trip tickets is $383 and $373 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 3 weeks before departure, which saves you about 12% compared to booking last minute. 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 seasonFebruary
Cheapest flight$201
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 8% 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 5 days, the lowest price for a flight from San José to Washington, D.C. Dulles Intl Airport was $201 for a one-way ticket and $330 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?

    Lufthansa, Iberia, 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?

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

  • 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 $354 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.

Reviews of the top 3 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 1568 reviews
8.1Crew
6.9Food
6.8Entertainment
7.8Boarding
7.4Comfort
Airline reviews

Same as the previous flight as far as comfort and food. Entertainment didn’t have a watchable screen so everything would need to be watched on your own device in which they didn’t have a charging port that accommodated my iPhone. Seats were very uncomfortable. Staff was very friendly.

6.0 GoodAnonymous, May 2026
PTY - LAX
Read more Copa Airlines reviews

Same as the previous flight as far as comfort and food. Entertainment didn’t have a watchable screen so everything would need to be watched on your own device in which they didn’t have a charging port that accommodated my iPhone. Seats were very uncomfortable. Staff was very friendly.

Boarding was a mess, they call all priority members without distinction so gold, platinum, silver were all mixed together in a long line which defeats the purpose

Entire experience from check in to landing was amazing the flight crew was excellent and friendly. Seats were comfortable.

Avoid at all costs. My wife had to stay back on a connecting flight as her parents flight was delayed. 10 days later on the way back they cancelled all our flights. We had to rebook all four of us on the next days flight.

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

Our flight was delayed 2.5 hours from Lisbon to DC so we missed our connection to Seattle that would have arrived at about 9 PM. The agent initially said we had to stay overnight in DC and there were no other options to put us on to get us to Seattle. While on board I discovered a flight via American he could have put us in but by the time we arrived in DC that was sold out. We were then put on a flight to San Francisco that was also delayed then arrived in San Francisco and our flight to Seattle was also delayed so we ended up not arriving until 2:15 am. Our son could not pick us up so we ended up having to pay over $100 to Uber home. This is the second trip with United that the flight has been delayed causing us to miss an evening in Las Vegas and we were given nothing.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

There were no facilities in the middle of the aircraft and premium economy was not allowed to use the business class facilities, and had to share the only two toilets at the back with economy. The upgrade to Premium was definitely not worth it

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

The economy seat was much less comfortable for an international flight in terms of recline and moving space when food tray is expanded. Per entertainment, it would be amazing if I could connect my Bluetooth headset or ear phones to the entertainment screen. Or provide in-flight wifi to connect directly from my own device.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

The employees at the gate were not communicating, they preferred to give the upgrade to pilots and not to the elite passengers Every flight I more disappointing, clients shooed be priority instead of other employees even if they are pilots, there was plenty room for pilots in economy

They should provide water to passengers who ask for it

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.

We found the chairs to be really uncomfortable. It’s also really unacceptable that no form of food or drink is included in a 6+ hour flight

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

Deplaning was a mess, I sat in business (seats are horrible) and the front door had a problem so we had to deplane from the rear exit. The stairs were not tall enough to reach so there was a large step down from the plane to the top of the stairs.

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

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

Information on your arrival and departure airports