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Dulles Intl

$139+ Cheap flights from San Jose, CA (SJC) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — IAD
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Jose to Washington, D.C. Dulles Intl are usually found in April or September, booked 39 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from San Jose to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Jose (SJC) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$296
(Alaska Airlines)

One-way from

$139
(Netflights)

Popular in

December

Cheapest in

April

Average price

$475
Provider with most accurate pricing for San Jose-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Jose-Washington, D.C. Dulles Intl flights.
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From San Jose to Washington, D.C. Dulles Intl
Search Deals
One-way flight from San Jose to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($84 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from San Jose to Dulles Intl

Cheapest flights from San Jose to Dulles Intl
Explore the most affordable flight options available from San Jose to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:00 amSJC - IAD
2 stops12h 00mSouthwest
Sun 12/145:05 amIAD - SJC
1 stop9h 40mSouthwest
Deal found 11/2$323
This Southwest deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:25 pmSJC - IAD
1 stop6h 35mSouthwest
Sat 11/224:15 pmIAD - SJC
1 stop7h 45mSouthwest
Deal found 11/1$341
This KAYAK deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:18 pmSJC - IAD
1 stop9h 05mAlaska Airlines
Sun 1/255:26 pmIAD - SJC
1 stop8h 09mAlaska Airlines
Deal found 11/1$343
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:35 amSJC - IAD
1 stop7h 30mSouthwest
Thu 1/15:45 pmIAD - SJC
1 stop7h 40mSouthwest
Deal found 11/2$358
This Alaska Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/166:13 pmSJC - IAD
1 stop9h 10mAlaska Airlines
Thu 12/45:37 pmIAD - SJC
1 stop8h 05mAlaska Airlines
Deal found 10/31$363
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:35 amSJC - IAD
1 stop7h 30mSouthwest
Fri 1/25:00 amIAD - SJC
1 stop7h 40mSouthwest
Deal found 11/2$368
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/166:25 amSJC - IAD
1 stop9h 01mDelta
Thu 12/411:06 amIAD - SJC
2 stops14h 50mDelta
Deal found 10/31$369
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:00 amSJC - IAD
2 stops12h 00mSouthwest
Mon 12/87:40 amIAD - SJC
2 stops12h 20mSouthwest
Deal found 11/2$375
This American Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:00 amSJC - IAD
1 stop7h 11mAmerican Airlines
Tue 11/256:04 amIAD - SJC
1 stop10h 13mAmerican Airlines
Deal found 11/1$385

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Jose to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from San Jose to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

San Jose

Fly to

Dulles Intl

Route

Depart

Return

Price

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Sat 1/10

11:10 am-10:10 pm

2 stops8h 00m

Washington, D.C. Dulles Intl

Thu 1/15

4:40 pm-9:55 pm

1 stop8h 15m

$313

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Sat 1/10

11:10 am-10:10 pm

2 stops8h 00m

Washington, D.C. Dulles Intl

Fri 1/16

5:30 am-10:20 am

1 stop7h 50m

$313

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 4/23

10:05 am-11:52 pm

1 stop10h 47m

Washington, D.C. Dulles Intl

Mon 4/27

7:01 pm-9:13 am

1 stop17h 12m

$337

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Tue 11/18

12:25 pm-10:00 pm

1 stop6h 35m

Washington, D.C. Dulles Intl

Sat 11/22

4:15 pm-9:00 pm

1 stop7h 45m

$341

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 12/18

6:35 am-5:05 pm

1 stop7h 30m

Washington, D.C. Dulles Intl

Thu 1/1

5:45 pm-10:25 pm

1 stop7h 40m

$358

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Sun 11/16

6:25 am-6:26 pm

1 stop9h 01m

Washington, D.C. Dulles Intl

Thu 12/4

11:06 am-10:56 pm

2 stops14h 50m

$369

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 4/23

6:35 am-5:05 pm

1 stop7h 30m

Washington, D.C. Dulles Intl

Mon 4/27

5:55 am-3:30 pm

2 stops12h 35m

$374

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 12/3

7:00 am-10:00 pm

2 stops12h 00m

Washington, D.C. Dulles Intl

Mon 12/8

7:40 am-5:00 pm

2 stops12h 20m

$375

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 1/15

7:00 am-5:04 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Sun 1/18

5:26 pm-10:35 pm

1 stop8h 09m

$377

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 12/24

6:35 am-5:05 pm

1 stop7h 30m

Washington, D.C. Dulles Intl

Wed 12/31

7:40 am-2:45 pm

1 stop10h 05m

$409

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 19 results
1
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Compare providers for flights from San Jose to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Jose to Dulles Intl in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Jose, California-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Jose, California-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Jose, California-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Jose, California-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Jose, California-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Jose to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Jose with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Jose to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from San Jose to Dulles Intl. Price data was last updated on October 31, 2025.

The price you pay for your flight from San Jose, California to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 39 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Jose, California to Washington, D.C. Dulles Intl Airport?

Currently, May is the cheapest month in which you can book a flight from San Jose, California to Washington, D.C. Dulles Intl Airport (average of $118). Flying from San Jose, California to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $287). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SJC to IAD?

Find hourly flight availability from San Jose to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 14% on flights from San Jose, California to Washington, D.C. Dulles Intl Airport by exploring options for tickets at noon.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated November 3, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from San Jose to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,235 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,235 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
8,001 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,996 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,117 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from San Jose to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Jose to Washington, D.C. Dulles Intl?

    San Jose (SJC), located 2.9 mi from the city center, is the airport you fly out of when you book flights from San Jose to Washington, D.C. Dulles Intl. 5 airlines have flights from San Jose to Washington, D.C. Dulles Intl on a regular basis. Booking flights from San Jose to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.

  • How long is the flight from San Jose, California to Washington, D.C. Dulles Intl Airport?

    For as low as $313, Southwest can have you in Washington, D.C. Dulles Intl Airport from San Jose, California in 8h. Airlines will cover a distance of 2393 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Jose, California to Washington, D.C. Dulles Intl Airport round-trip?

    Flying on Frontier is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $220. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and Delta, with the lowest prices starting at $264 and $276, respectively. Frontier is currently priced 45% below the average price you’ll pay for this route.

  • Can I find deals for flights from San Jose to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on San Jose to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Jose to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Dulles Intl.

  • Can I find deals for business class flights from San Jose to Dulles Intl?

    Yes. Cheapflights offers flight deals from San Jose to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, May is the cheapest month in which you can book a flight from San Jose, California to Washington, D.C. Dulles Intl Airport (average of $118). Flying from San Jose, California to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $287). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Owings Mills
Linthicum Heights
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf
Bowie

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Alternative routes for San Jose to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from San Jose to Dulles Intl

Discover the top 5 airlines that operate flights from San Jose to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$220Average$293FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$264Average$378FlexibilityNo cancel feeOn-time75%
DeltaCheapest$276Average$374FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$276Average$417FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$284Average$440FlexibilityNo cancel feeOn-time63%

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