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Dulles Intl

$126+ 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
Feb 23 — Mar 21
Mon 2/23
Mon 3/2
1 adult, Economy
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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 January 24, 2026.

This Southwest deal was found by Cheapflights users on 1/23. 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 2/1812:10 pm
SJC
-
IAD
1 stop6h 45m
Southwest
Tue 2/249:05 am
IAD
-
SJC
1 stop8h 40m
Southwest
Deal found 1/23$251
This CheapOair deal was found by Cheapflights users on 1/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:05 pm
SJC
-
IAD
1 stop18h 22m
Alaska Airlines
Wed 3/117:05 am
IAD
-
SJC
1 stop9h 37m
Alaska Airlines
Deal found 1/23$254
This CheapOair deal was found by Cheapflights users on 1/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:45 pm
SJC
-
IAD
1 stop25h 42m
Alaska Airlines
Wed 3/46:20 pm
IAD
-
SJC
1 stop18h 27m
Alaska Airlines
Deal found 1/22$257
This Delta deal was found by Cheapflights users on 1/22. 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.
Wed 2/1810:35 pm
SJC
-
IAD
1 stop7h 38m
Delta
Wed 2/257:15 am
IAD
-
SJC
2 stops10h 41m
Delta
Deal found 1/22$262
This CheapOair deal was found by Cheapflights users on 1/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/187:00 am
SJC
-
IAD
1 stop7h 27m
Alaska Airlines
Mon 2/236:20 pm
IAD
-
SJC
1 stop18h 27m
Alaska Airlines
Deal found 1/23$274
This CheapOair deal was found by Cheapflights users on 1/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/212:29 pm
SJC
-
IAD
1 stop12h 11m
Alaska Airlines
Thu 4/237:10 am
IAD
-
SJC
1 stop9h 40m
Alaska Airlines
Deal found 1/23$277
This Kiwi.com deal was found by Cheapflights users on 1/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:03 pm
SJC
-
IAD
1 stop8h 37m
Hawaiian Airlines
Wed 3/257:00 am
IAD
-
SJC
1 stop9h 35m
Hawaiian Airlines
Deal found 1/22$285
This American Airlines deal was found by Cheapflights users on 1/22. 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.
Sat 2/214:20 pm
SJC
-
IAD
2 stops13h 28m
American Airlines
Tue 2/2411:30 am
IAD
-
SJC
2 stops13h 00m
American Airlines
Deal found 1/22$286
This Southwest deal was found by Cheapflights users on 1/21. 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.
Mon 3/302:45 pm
SJC
-
IAD
1 stop6h 30m
Southwest
Sat 4/45:50 am
IAD
-
SJC
1 stop7h 25m
Southwest
Deal found 1/21$287

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 January 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$251
(Southwest)

One-way from

$126
(American Airlines)

Popular in

October

Cheapest in

April

Average price

$394
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. 1% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 24, 2026.
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

Wed 2/18

12:10 pm-9:55 pm

1 stop6h 45m

Washington, D.C. Dulles Intl

Tue 2/24

9:05 am-6:25 pm

2 stops12h 20m

$256

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Tue 3/17

1:25 pm-12:27 am

1 stop8h 02m

Washington, D.C. Dulles Intl

Wed 3/18

6:01 am-12:08 pm

1 stop9h 07m

$257

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Sat 2/21

6:20 am-6:54 pm

1 stop9h 34m

Washington, D.C. Dulles Intl

Tue 2/24

6:00 am-2:56 pm

2 stops11h 56m

$262

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Mon 2/23

12:45 pm-5:27 pm

1 stop25h 42m

Washington, D.C. Dulles Intl

Wed 2/25

6:20 pm-9:47 am

1 stop18h 27m

$274

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 2/18

7:00 am-5:27 pm

1 stop7h 27m

Washington, D.C. Dulles Intl

Mon 2/23

6:20 pm-9:47 am

1 stop18h 27m

$274

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Mon 3/30

2:45 pm-12:15 am

1 stop6h 30m

Washington, D.C. Dulles Intl

Sat 4/4

5:50 am-10:15 am

1 stop7h 25m

$287

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 2/12

12:20 pm-11:10 pm

1 stop7h 50m

Washington, D.C. Dulles Intl

Wed 2/18

4:30 pm-9:55 pm

1 stop8h 25m

$294

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 2/18

7:00 am-5:27 pm

1 stop7h 27m

Washington, D.C. Dulles Intl

Wed 2/25

7:05 am-10:56 pm

2 stops18h 51m

$302

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Mon 3/9

2:45 pm-12:15 am

1 stop6h 30m

Washington, D.C. Dulles Intl

Thu 3/12

5:50 am-12:45 pm

2 stops9h 55m

$302

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 5/20

1:15 pm-11:29 pm

1 stop7h 14m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 19 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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Jose, California-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >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 Expedia the most. Expedia 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 January 16, 2026.

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 March is currently the most expensive (average of $275). 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.

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 January 24, 2026.
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
11,785 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,785 reviews
Alaska Airlines
8.0
Very good
11,785 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,268 reviews
Alaska Airlines
8.0
Very good
11,785 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,110 reviews
Alaska Airlines
8.0
Very good
11,785 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,193 reviews
Alaska Airlines
8.0
Very good
11,785 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Frontier
5.7
Fair
3,058 reviews
Alaska Airlines
8.0
Very good
11,785 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 $256, Southwest 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 Alaska Airlines and Southwest, with the lowest prices starting at $216 and $276, respectively. Frontier is currently priced 58% 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. American Airlines flights start at $125 while deals on Southwest start at $125 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 March is currently the most expensive (average of $275). 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
Silver Spring
Hanover
Herndon
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
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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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 January 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$156Average$293FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$216Average$333FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$276Average$414FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$276Average$393FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$354FlexibilityNo cancel feeOn-timeN/A

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