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Dulles Intl

$76+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — IAD
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 15 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap 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 December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:45 amSJC - IAD
1 stop7h 23mUnited Airlines
Mon 1/54:00 pmIAD - SJC
1 stop8h 16mUnited Airlines
Deal found 12/2$325
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/187:00 amSJC - IAD
1 stop7h 21mAlaska Airlines
Thu 1/85:26 pmIAD - SJC
1 stop8h 09mAlaska Airlines
Deal found 12/3$330
This United Airlines deal was found by Cheapflights users on 12/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:45 amSJC - IAD
1 stop9h 39mUnited Airlines
Thu 12/186:20 amIAD - SJC
1 stop10h 13mUnited Airlines
Deal found 12/3$341
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/187:00 amSJC - IAD
1 stop7h 21mAlaska Airlines
Fri 1/95:26 pmIAD - SJC
1 stop8h 09mAlaska Airlines
Deal found 12/3$350
This Southwest deal was found by Cheapflights users on 12/2. 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 12/176:35 amSJC - IAD
1 stop7h 30mSouthwest
Mon 1/55:05 amIAD - SJC
2 stops11h 50mSouthwest
Deal found 12/2$351
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/187:00 amSJC - IAD
1 stop7h 21mAlaska Airlines
Sat 1/106:04 pmIAD - SJC
1 stop18h 44mAlaska Airlines
Deal found 12/3$357
This United Airlines deal was found by Cheapflights users on 12/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:00 amSJC - IAD
1 stop9h 25mUnited Airlines
Wed 1/74:11 pmIAD - SJC
1 stop7h 45mUnited Airlines
Deal found 12/3$359
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/187:00 amSJC - IAD
1 stop7h 21mAlaska Airlines
Wed 1/75:26 pmIAD - SJC
1 stop21h 43mAlaska Airlines
Deal found 12/3$366
This Southwest deal was found by Cheapflights users on 12/3. 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 12/176:35 amSJC - IAD
1 stop7h 30mSouthwest
Thu 12/185:05 amIAD - SJC
2 stops11h 10mSouthwest
Deal found 12/3$370
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Wed 12/248:00 pmSJC - IAD
1 stop18h 21mAlaska Airlines
Thu 1/85:26 pmIAD - SJC
1 stop8h 09mAlaska Airlines
Deal found 12/3$371
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/187:00 amSJC - IAD
1 stop7h 21mAlaska Airlines
Sun 1/115:26 pmIAD - SJC
1 stop23h 55mAlaska Airlines
Deal found 12/3$386
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Wed 12/248:00 pmSJC - IAD
1 stop18h 21mAlaska Airlines
Fri 1/95:26 pmIAD - SJC
1 stop8h 09mAlaska Airlines
Deal found 12/3$391

Find 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$171
(Southwest)

One-way from

$76
(Southwest)

Popular in

December

Cheapest in

April

Average price

$633
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.
Search Deals
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. 21% potential increase in price ($116 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 4, 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 2/21

6:00 am-10:48 pm

2 stops13h 48m

Washington, D.C. Dulles Intl

Tue 2/24

6:00 am-1:19 pm

1 stop10h 19m

$180

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 1/22

12:10 pm-9:55 pm

1 stop6h 45m

Washington, D.C. Dulles Intl

Wed 1/28

4:30 pm-9:55 pm

1 stop8h 25m

$191

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 1/7

7:00 am-5:04 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Thu 1/8

5:26 pm-10:35 pm

1 stop8h 09m

$230

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Mon 1/26

7:00 am-5:04 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Wed 1/28

5:26 pm-10:35 pm

1 stop8h 09m

$230

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Sun 2/8

7:00 am-5:04 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Wed 2/11

5:26 pm-10:35 pm

1 stop8h 09m

$243

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Tue 1/6

11:40 am-11:10 pm

1 stop8h 30m

Washington, D.C. Dulles Intl

Sat 1/10

7:30 am-1:39 pm

1 stop9h 09m

$245

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 1/8

11:45 am-11:10 pm

1 stop8h 25m

Washington, D.C. Dulles Intl

Tue 1/13

7:30 am-1:34 pm

1 stop9h 04m

$245

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 1/8

9:15 am-11:57 pm

2 stops11h 42m

Washington, D.C. Dulles Intl

Sat 1/10

7:30 am-1:39 pm

1 stop9h 09m

$256

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Tue 2/24

9:50 am-11:10 pm

2 stops10h 20m

Washington, D.C. Dulles Intl

Mon 3/2

7:30 am-4:08 pm

2 stops11h 38m

$256

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 1/7

9:15 am-11:57 pm

2 stops11h 42m

Washington, D.C. Dulles Intl

Thu 1/8

12:23 pm-9:20 pm

2 stops11h 57m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 22 results
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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 December.
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 November 28, 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 15 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 January is currently the most expensive (average of $277). 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 December 4, 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 December 4, 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
11,402 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Alaska Airlines
8.0
Very good
11,402 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Southwest
8.0
Very good
4,251 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Delta
7.9
Good
8,011 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
United Airlines
7.4
Good
9,066 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Frontier
5.8
Fair
3,092 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

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 $191, American Airlines can have you in Washington, D.C. Dulles Intl Airport from San Jose, California in 6h 45m. 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 $156. Additional round-trip tickets that might be worth considering are offered by United Airlines and Alaska Airlines, with the lowest prices starting at $250 and $264, respectively. Frontier is currently priced 62% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from San Jose, California to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $98. Delta flights start at $104 while deals on Alaska Airlines start at $109 one-way.

  • 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 January is currently the most expensive (average of $277). 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
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton
Upper Marlboro

Browse thousands of different options on Cheapflights for your next trip

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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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Los Angeles to Baltimore flights
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Sacramento to Baltimore flights
San Jose to Baltimore flights
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Santa Ana to Baltimore flights
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Burbank to Baltimore flights
Santa Ana to Reagan-National flights
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Burbank to Reagan-National flights
Oakland to Reagan-National flights
Oakland to Baltimore flights
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Reno to Baltimore flights
Reno to Reagan-National flights
Fresno to Dulles Intl flights
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Fresno to Baltimore flights
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San Luis Obispo to Reagan-National flights
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Palm Springs to Reagan-National flights
Long Beach to Baltimore flights
Santa Barbara to Reagan-National flights
Medford to Dulles Intl flights
Palm Springs to Baltimore flights
Santa Barbara to Baltimore flights
San Luis Obispo to Dulles Intl flights
Medford to Baltimore flights
San Luis Obispo to Baltimore flights

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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$220Average$293FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$250Average$393FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$264Average$357FlexibilityNo cancel feeOn-time75%
DeltaCheapest$276Average$375FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$284Average$434FlexibilityNo cancel feeOn-time63%

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