IAD - SJC

$93 Find Cheap Flights from Washington Dulles Airport to San Jose - Compare and Save

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 8/29. 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

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Everything you should know

Cheapest round-trip
$296
Typical prices: $266-$426
Frontier
Mon 8/24Fri 9/11
IAD - SJC • 2 stops
Cheapest one-way
$93
Typical prices: $329-$401
Frontier
Sat 8/29
IAD - SJC • 1 stop
Top airlines
Cheapest • from $296 (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
Insights
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Insights
Top layover airports
Cheapest • Avg $357 (round-trip)
Shortest trip • 8h 04m (one-way)
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
Good to know
+1
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Good to know
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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

Mon, Aug 24 - Fri, Sep 11
Frontier Logo
8:59 am - 7:19 pm
IAD
-
SJC
13h 20m
2 stops
Frontier Logo
1:38 pm - 6:20 am
SJC
-
IAD
13h 42m
1 stop
$296Frontier
Mon, Sep 28 - Mon, Sep 28
Frontier Logo
6:00 am - 12:43 pm
IAD
-
SJC
9h 43m
1 stop
Frontier Logo
9:03 pm - 12:10 am
SJC
-
IAD
24h 07m
2 stops
$296Frontier
Fri, Aug 28 - Tue, Sep 15
Delta Logo
5:47 pm - 10:58 pm
IAD
-
SJC
8h 11m
1 stop
Delta Logo
11:32 am - 10:56 pm
SJC
-
IAD
8h 24m
1 stop
$305Delta
Fri, Aug 28 - Sat, Sep 12
Delta Logo
5:47 pm - 10:58 pm
IAD
-
SJC
8h 11m
1 stop
Delta Logo
6:40 am - 5:11 pm
SJC
-
IAD
7h 31m
1 stop
$305Delta
Fri, Aug 21 - Sat, Aug 29
United Airlines Logo
3:40 pm - 10:50 pm
IAD
-
SJC
10h 10m
1 stop
United Airlines Logo
2:10 pm - 12:44 am
SJC
-
IAD
7h 34m
1 stop
$305United Airlines
Sat, Aug 15 - Thu, Aug 27
United Airlines Logo
5:15 pm - 10:50 pm
IAD
-
SJC
8h 35m
1 stop
United Airlines Logo
6:37 pm - 5:25 am
SJC
-
IAD
7h 48m
1 stop
$305United Airlines
Wed, Sep 9 - Wed, Sep 16
Alaska Airlines Logo
7:35 pm - 9:23 am
IAD
-
SJC
16h 48m
1 stop
Alaska Airlines Logo
7:29 am - 6:14 pm
SJC
-
IAD
7h 45m
1 stop
$305Alaska Airlines
Mon, Oct 5 - Tue, Oct 13
Alaska Airlines Logo
7:24 pm - 9:54 am
IAD
-
SJC
17h 30m
1 stop
Alaska Airlines Logo
5:15 pm - 5:50 pm
SJC
-
IAD
21h 35m
1 stop
$305Alaska Airlines
Tue, Sep 29 - Tue, Oct 13
American Airlines Logo
4:56 pm - 10:01 pm
IAD
-
SJC
8h 05m
1 stop
American Airlines Logo
12:02 pm - 11:23 pm
SJC
-
IAD
8h 21m
1 stop
$305American Airlines
Sat, Aug 22 - Sat, Aug 29
American Airlines Logo
6:09 am - 10:50 am
IAD
-
SJC
7h 41m
1 stop
American Airlines Logo
6:00 am - 6:27 pm
SJC
-
IAD
9h 27m
1 stop
$305American Airlines
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.

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

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

Flight prices are typical for this route right now.

Flights to San Jose, California from Washington, D.C. Dulles Intl Airport usually cost between $294 and $508 in August.
The lowest price found in the past 5 days was $296 on Frontier (Aug 24-Sep 11).

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 $330 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $553 and $540 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 5 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low season

February

Cheapest flight

$93
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 26% increase in price.
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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to San Jose was $93 for a one-way ticket and $296 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?

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

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to San Jose are Southwest and Alaska Airlines. With an average price for the route of $377 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $444 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 4229 reviews
8.1Boarding
7.0Food
8.0Comfort
8.6Crew
7.5Entertainment
Airline reviews

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

2.0 MediocreChristopher, Jul 2026
DEN - SJC
Read more Southwest reviews

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

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

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.

No delays and arrived to destination 30 min early. Staff was super friendly.

The plane arrived 25 minutes late, and the Wi-Fi was slower than it usually is.

Flight was on time and the crew was very nice.

Flight was delayed for 1 hour. Otherwise it was a fairly normal Southwest experience

Main flight attendant made light of the delay and presented some humor to lighten the tempestuous situation. Delayed flight took off 2 hours after scheduled time.

More assistance and clarity for travelers with gate checking and lap children

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.

There was an issue with water that led to us not having potable water onboard. They dumped the onboard water and we were two hours late taking off.

The flight from San Diego to San Jose gate 28A The two persons working there didn’t even turn on the display board. The display board saying to Sacramento. When I asked she was rude and showed the board . Then he realized And changed. Every one was confused because we are running late to catch that flight coming from IAD. Very irresponsible staff.

Great crew, great boarding, old B-list movies, no free meal service, child kicking my seat back all flight long, early arrival, then 40 minute, confused wait for bags.

I never received a full itinerary of my round trip. I only received the outgoing flight on Sun Country to Baltimore. Throughout my stay in the Baltimore area I kept checking for the information on my return trip to Portland, I didn't receive it in timely manner, so I booked another flight. I received the return flight information on the Alaska flight booked via your sight upon returning to my home in Oregon. The cost of my ticket on Price line was $247.27. The flight was Alaska Airline Flight 9. The confirmation number is YWHLPB. Please be advised I purchased Insurance for this flight. The reference number is UVCV4-X4TK9-INS. I respectfully request a refund for the bookings on, AS 507 and AS 1121.The confirmation number is 72058793562147. Thank you for assistance in correcting this matter.

It was a good flight, crew members were friendly. The flight was smooth and overall a great experience.

The flight, boarding, and check-in experience couldn't have been a better experience. However, I ordered food ahead of time pre-flight and there was no record of that purchase, no receipt sent to my phone and the flight attendant was pretty was pretty "whatever" about it. Luckily we were able to purchase onboard but it was annoying to say the least. Especially if there would not have been other food to purchase as it's a long flight, not to add the worry of whether or not I had been charged. Otherwise, pretty good experience overall.

Great ground staff - made boarding smooth for my family , helped us be seated together. Cabin crew was very friendly.

Flight was delayed for about an hour but overall good experience

We never made it on this flight because we missed our connection due to o delayed flight from Jackson.

The gentleman at the gate I think his name is RIE was exceptional

The cabin temperature was nice and cool. The wifi was not working.

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

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Crew was not friendly when I went to request a seat change.

I wouldn't say I liked being forced to check my small roller bag at the gate; too many people had bags and were in a higher boarding group.

Comfort+ on delta was excellent room for a 6’4” male. No one issues. Staff was great. Flight was bumpy but the pilot did everything he could to make it comfortable. Internet went out half way through the flight. I am glad I didn’t pay for it. But that was a huge issue for users.

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

7 hours delayed due to operational issues on United’s end. Basically laziness.

We were given vouchers we couldn’t use with a 5.5 hour delay

This was a 5 hour flight with no entertainment and with a snack being provided (pretzels and fruit bar), which are both high in carbs and sugar. Nuts would have been a better choice.

Good plane, crew, and flight. Boarding was a bit chaotic. Bathrooms were unacceptable. United DESPERATELY needs a new terminal at IAD.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

787-9 Transcon from IAD-LAX FYI no meals in premium plus, not considered Premium - seats are wonderful https://www.united.com/ual/en/us/fly/travel/inflight/premium-services.html Horrible handling of delayed flight

I was crammed against a person too large for one seat. This traveler (who I’m sure you have a record of, 21E) should be required to purchase two tickets in the future. Also, your streaming service kept kicking me out of my movie.

Disorganized boarding. Mandatory to gate check bags. Curt flight staff. No space for cabin bag, even when I was in first class.

Patrons with larger bags were asked to check the bags when boarding. Seems like the most effective, and least costly way, way to successfully use the cramped space.

They cancelled our flight two times after rebooking us for a later flight. We never got on the plane. We found another solution by driving.

Mostly great. Only issue was with the WiFi. Halfway through the flight it was spotty and I was unable to work as I planned. This impacted my work products as I am traveling for business and it was an unexpected hindrance which was inconvenient. Flight here was amazing. For a 5 hour flight something more than a Biscoff would be nice but I’m just swinging at windmills I guess…

Mechanical delay > Crew Time out. No communication to passengers. Crew time out was positioned as a surprise (even though it must have been know at the time of boarding that the crew would time out.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

The small flights with Valet Luggage has a poor service

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Human interaction. Thought there would be more service-even a smile would have been nice.

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

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

Information on your arrival and departure airports