IAD - SJC

$136 Find Cheap Flights from Washington Dulles Airport to San Jose

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 Jose departing on 4/15. 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 San Jose

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

Cheapest round-trip
$298
Overall average: $437
Delta
Tue 4/21Mon 5/4
IAD - SJC • 1 stop
Cheapest one-way
$136
Typical prices: $195-$340
Southwest
Wed 4/15
IAD - SJC • 1 stop
Top airlines
Cheapest • from $298 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and San Jose. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $285 (round-trip)
Shortest trip • 7h 56m (one-way)
Insights
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 37% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 26% 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 San Jose!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to San Jose (IAD-SJC)

 
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 Jose 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 Dulles Intl to San Jose

Tue, Apr 21 - Mon, May 4
Delta Logo
7:06 am - 12:21 pm
IAD
-
SJC
8h 15m
1 stop
Delta Logo
7:20 am - 11:55 pm
SJC
-
IAD
13h 35m
1 stop
$298Delta
Tue, Apr 7 - Sat, Apr 18
Delta Logo
7:00 am - 2:57 pm
IAD
-
SJC
10h 57m
1 stop
Delta Logo
9:37 am - 11:32 pm
SJC
-
IAD
10h 55m
2 stops
$299Delta
Sat, Apr 18 - Mon, May 4
Delta Logo
6:00 am - 3:08 pm
IAD
-
SJC
12h 08m
2 stops
Delta Logo
7:20 am - 11:55 pm
SJC
-
IAD
13h 35m
1 stop
$303Delta
Sat, May 2 - Sat, May 9
American Airlines Logo
6:25 am - 3:47 pm
IAD
-
SJC
12h 22m
2 stops
American Airlines Logo
6:10 am - 11:26 pm
SJC
-
IAD
14h 16m
2 stops
$306American Airlines
Wed, May 6 - Mon, May 11
Delta Logo
12:37 pm - 10:00 pm
IAD
-
SJC
12h 23m
2 stops
Delta Logo
9:53 am - 12:15 am
SJC
-
IAD
11h 22m
2 stops
$308Delta
Wed, Apr 15 - Wed, Apr 22
Alaska Airlines Logo
6:22 pm - 9:58 am
IAD
-
SJC
18h 36m
1 stop
Alaska Airlines Logo
2:51 pm - 5:41 pm
SJC
-
IAD
23h 50m
1 stop
$311Alaska Airlines
Wed, May 6 - Mon, May 11
Alaska Airlines Logo
6:56 pm - 9:44 am
IAD
-
SJC
17h 48m
1 stop
Alaska Airlines Logo
6:43 am - 5:41 pm
SJC
-
IAD
7h 58m
1 stop
$314Alaska Airlines
Sat, Apr 18 - Tue, Apr 21
Southwest Logo
5:50 am - 4:40 pm
IAD
-
SJC
13h 50m
1 stop
Southwest Logo
1:35 pm - 11:40 pm
SJC
-
IAD
7h 05m
1 stop
$316Southwest
Wed, May 6 - Mon, May 11
Delta Logo
6:00 am - 4:59 pm
IAD
-
SJC
13h 59m
2 stops
Delta Logo
12:12 pm - 12:51 am
SJC
-
IAD
9h 39m
1 stop
$319Delta
Thu, May 7 - Sat, May 9
Delta Logo
3:08 pm - 10:55 pm
IAD
-
SJC
10h 47m
1 stop
Delta Logo
7:10 am - 5:29 pm
SJC
-
IAD
7h 19m
1 stop
$322Delta
Booking Insights

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

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

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

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 Jose, 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 Jose is September, where tickets cost $289 (return) on average. On the other hand, the most expensive months are December and October, where the average cost of round-trip tickets is $540 and $490 respectively.

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

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 Jose, 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 Jose, you should book around 2 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$136
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Washington Dulles Airport to San Jose

When to book flights from Dulles Intl to San Jose

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

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to San Jose was $136 for a one-way ticket and $298 for a round-trip.

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

    A passport is not required to fly from Washington Dulles Airport to San Jose.

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

    Washington Dulles Airport and San Jose 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 Jose.

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

    We unfortunately don’t have that data for this specific route.

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

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

  • Which is the best airline for flights from Washington, D.C. to San Jose, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to San Jose are Southwest and Delta. With an average price for the route of $377 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $368 and an overall rating of 7.9.

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

    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 Jose.

  • 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 Jose?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Jose 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 Jose?

    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 Jose with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SJC 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 Jose?

    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 Jose from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Dulles Intl to San Jose

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to San Jose. 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 Jose? 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.
8.0
SouthwestOverall score based on 4325 reviews
7.0Food
8.6Crew
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

Boarding was easy. The seats are small and fairly uncomfortable

8.0 ExcellentNicole, Mar 2026
LGB - OAK
Read more Southwest reviews

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Mediocre. Boarding is now unpleasant. The employees, once friendly and nice, are now regularly speaking sternly to passengers, badgering them to do things right so they can take off on time and gate check bags because they don't have enough overhead bin space. The pretzel snack was crushed flat and broken into even smaller pieces, which happens frequently lately. Drink service was suspended before they reached my row.

The charges were ridiculous for an hour flight and the turbulence was very scary.

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

I was standing in line to use the restroom. A First Class passenger wanted to use the restroom after me, but Jaques made me wait on Flight 3418 from BOI to SJC on December 12, 2025. I felt this was inappropriate and rude.

Look at my previous review I just wrote on this survey. It was awful!

The airline staff was great! The best safety review ive ever had!

Hawaiian Airlines, like most US-based ones, constantly provide sub-par service and pack their planes to the max with all kinds of last-minute-purchase schemes. As a result, it makes every flight so uncomfortable and generates high health risk for its passengers. In one word, GREED rules the day!

generally good. No snacks or drinks on the flight 3379 from Portland to San Jose, CA. Sad.

Terrible airport. It took over one hour to pass checkpoint and security gate. We stood under the sun in the long line

Original flight was canceled, and the automatically booked second flight was immediately delayed. I arrived about 4 hours later than planned with only a $12 meal voucher that didn't fully cover a sandwich at airport prices.

One of the stewardess, Tre, went above and beyond to ensure my comfort!

I loved that we boarded orderly and quickly, that I had an opportunity to check my bag free at the gate, that there was plenty of seat/leg room, there was smooth takeoff and landing, the attendants were pleasant and helpful, and that we arrived on time!!

Crew was very good. Problem was not Alaska Airlines’ fault, there was a horrible, squealing, screaming kid near me.

Left a few minutes early. Got in 15 minutes early. Very attentive service on board. Very organized boarding.

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Flight delay for mechanical. Inbound arrived on time. No one said why mechanical delay.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

This was one of the most frustrating travel experiences I've had to date. I had changed my flight day of to this one as it was slated to depart on time. It ended up being so delayed that my original flight took off before this one did. The boarding process began but eventually stopped and everyone had to get off the plane as a problem was identified. The person at the front desk just tried to laugh it off as if this wasn't already a huge inconvenience. From there, we eventually got to board only to sit at the gate for an additional hour because of some additional issue. This was extremely frustrating and caused a lot of stress.

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

delayed due to weather. Could not communicate with family since the wifi was broken

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

We were told the flight was delayed 5 times, then it was moved to the next day.

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

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

Information on your arrival and departure airports