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Dulles Intl

$109+ Cheap flights from San Jose (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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — IAD
May 18 — May 251
Sun 5/18
Sun 5/25
1 adult, Economy
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Cheapflights Tip: The best prices from San Jose to Washington, D.C. Dulles Intl are usually found in September or April, booked 71 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 May 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$256
(Alaska Airlines)

One-way from

$109
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$347
Provider with most accurate pricing for San Jose-Washington, D.C. Dulles Intl flight deals.
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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
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One-way flight from San Jose to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 13% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 13, 2025.

This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 5/251:31 pmSJC - IAD
1 stop15h 05mAlaska Airlines
Wed 5/285:14 pmIAD - SJC
1 stop19h 49mAlaska Airlines
Deal found 5/11$256
This Frontier deal was found by Cheapflights users on 5/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/262:33 pmSJC - IAD
1 stop12h 22mFrontier
Fri 5/307:25 amIAD - SJC
1 stop9h 18mFrontier
Deal found 5/12$261
This Hawaiian Airlines deal was found by Cheapflights users on 5/12. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/26:15 amSJC - IAD
1 stop9h 10mHawaiian Airlines
Wed 6/46:30 amIAD - SJC
1 stop9h 06mHawaiian Airlines
Deal found 5/12$263
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Tue 8/196:30 amSJC - IAD
1 stop8h 00mUnited Airlines
Sun 8/246:00 amIAD - SJC
1 stop9h 05mUnited Airlines
Deal found 5/12$264
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Thu 7/317:09 pmSJC - IAD
2 stops12h 50mAmerican Airlines
Sat 8/1611:51 amIAD - SJC
2 stops9h 41mAmerican Airlines
Deal found 5/12$274
This Delta deal was found by Cheapflights users on 5/12. 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 6/181:40 pmSJC - IAD
1 stop6h 39mDelta
Wed 7/26:00 amIAD - SJC
1 stop8h 07mDelta
Deal found 5/12$277
This Trip.com deal was found by Cheapflights users on 5/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/511:00 amSJC - IAD
2 stops27h 12mMultiple Airlines
Mon 6/97:40 amIAD - SJC
1 stop9h 00mMultiple Airlines
Deal found 5/12$283
This Southwest deal was found by Cheapflights users on 5/12. 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 6/412:45 pmSJC - IAD
1 stop6h 50mSouthwest
Sat 6/76:30 amIAD - SJC
2 stops14h 15mSouthwest
Deal found 5/12$332

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 May 13, 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

Sun 5/25

1:31 pm-7:36 am

1 stop15h 05m

Washington, D.C. Dulles Intl

Wed 5/28

5:14 pm-10:03 am

1 stop19h 49m

$256

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Mon 5/26

2:33 pm-5:55 am

1 stop12h 22m

Washington, D.C. Dulles Intl

Fri 5/30

7:25 am-1:43 pm

1 stop9h 18m

$261

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Fri 6/13

6:26 pm-5:15 am

1 stop7h 49m

Washington, D.C. Dulles Intl

Tue 6/17

6:35 am-1:21 pm

1 stop9h 46m

$264

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 7/31

7:09 pm-10:59 am

2 stops12h 50m

Washington, D.C. Dulles Intl

Sat 8/16

11:51 am-6:32 pm

2 stops9h 41m

$274

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 6/18

1:40 pm-11:19 pm

1 stop6h 39m

Washington, D.C. Dulles Intl

Wed 7/2

6:00 am-11:07 am

1 stop8h 07m

$277

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Tue 5/20

12:25 pm-11:59 pm

1 stop8h 34m

Washington, D.C. Dulles Intl

Wed 5/28

6:30 am-12:36 pm

1 stop9h 06m

$280

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Thu 6/5

11:00 am-5:12 pm

2 stops27h 12m

Washington, D.C. Dulles Intl

Mon 6/9

7:40 am-1:40 pm

1 stop9h 00m

$283

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 6/4

12:45 pm-10:35 pm

1 stop6h 50m

Washington, D.C. Dulles Intl

Sat 6/7

6:30 am-5:45 pm

2 stops14h 15m

$332

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 6/11

6:00 am-6:33 am

1 stop21h 33m

$109

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 5/21

6:15 am-6:25 pm

1 stop9h 10m

$112

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 16 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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
Trip.comPrice Accuracy1 starTrust 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-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-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-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-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-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 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 May 9, 2025.

The price you pay for your flight from San Jose 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 71 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 to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from San Jose to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Jose to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $371). 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 May 13, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 15% on flights from San Jose to Washington, D.C. Dulles Intl Airport by exploring options for tickets at noon.

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

Use this chart to determine the cheapest time to fly round-trip from San Jose to Dulles Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Jose to Washington, D.C. Dulles Intl Airport flight should consider departing on Thursday afternoons when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 May 13, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from San Jose to Washington, D.C. by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,949 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,434 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Flying on Alaska Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $256. Additional round-trip tickets that might be worth considering are offered by Frontier and United Airlines, with the lowest prices starting at $261 and $264, respectively. Alaska Airlines is currently priced 37% below the average price you’ll pay for this route.

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

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $112. Users have also found prices from $126 and $131 on United Airlines and American Airlines, respectively.

  • 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 to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from San Jose to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Jose to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $371). 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 San Jose?

Book flights to San Jose if you plan to visit one of these locations
Alexandria
Arlington
Woodbridge
Tysons
Springfield
Fairfax
Silver Spring
Fredericksburg
Rockville
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Gaithersburg
Falls Church
Laurel
Easton
Towson
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Bowie
National Harbor
Reston

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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 May 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$189Average$216FlexibilityNo cancel feeOn-time65%
DeltaCheapest$256Average$359FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$256Average$421FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$264Average$378FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$276Average$454FlexibilityNo cancel feeOn-time69%

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