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

Flying on Delta is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $277. Additional round-trip tickets that might be worth considering are offered by Frontier and Southwest, with the lowest prices starting at $283 and $284, respectively. Delta is currently priced 31% 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 Southwest. According to our data, you can fly for as low as $126. Users have also found prices from $130 and $131 on Frontier and American Airlines, respectively.

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

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.

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.

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).

What are the most popular airlines that fly from San Jose to Washington, D.C. Dulles Intl Airport?

Consider American Airlines, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from San Jose to Washington, D.C. Dulles Intl Airport.

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

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 21% on the overall cost on flights from San Jose to Washington, D.C. Dulles Intl Airport.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, September can be a great choice for travel to Washington, D.C. Dulles Intl Airport. Flights to Washington, D.C. Dulles Intl Airport from San Jose in September are about $352 on average during September, but can be found for as low as $100.

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. 6 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.

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.

$126+ Flights from San Jose to Washington, D.C. Dulles Intl Airport

Q: How far in advance should I book a flight from San Jose to Washington, D.C. Dulles Intl Airport?

Travelers have found it’s best to book a flight 18 days in advance to save up to 154% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 18 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from San Jose to Washington, D.C. Dulles Intl Airport 1-2 weeks in advance for as low as $238, or $488 for flights within the next 24 hours.

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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 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

Round-trip from	$277 (Delta)
One-way from	$126 (Southwest)
Popular in	December
Cheapest in	September
Average price	$437

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. 15% potential increase in price ($74 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 3, 2025.

Tue 8/126:30 amSJC - IAD

1 stop9h 19mDelta

Thu 8/143:26 pmIAD - SJC

1 stop10h 24mDelta

Deal found 7/3

$277

Mon 8/112:12 pmSJC - IAD

1 stop13h 22mFrontier

Mon 8/187:30 amIAD - SJC

1 stop8h 47mFrontier

Deal found 7/2

$283

Tue 7/298:40 amSJC - IAD

1 stop6h 45mSouthwest

Mon 8/45:00 amIAD - SJC

1 stop7h 15mSouthwest

Deal found 7/3

$284

Wed 8/206:30 pmSJC - IAD

1 stop10h 02mAlaska Airlines

Thu 9/255:52 pmIAD - SJC

1 stop7h 46mAlaska Airlines

Deal found 7/1

$296

Tue 9/306:00 amSJC - IAD

1 stop7h 50mAmerican Airlines

Sun 10/56:25 amIAD - SJC

1 stop9h 11mAmerican Airlines

Deal found 7/2

$298

Fri 8/16:15 amSJC - IAD

1 stop7h 10mHawaiian Airlines

Sat 8/95:25 pmIAD - SJC

1 stop8h 11mHawaiian Airlines

Deal found 7/3

$326

Best flights from San Jose to Dulles Intl
Discover carefully curated flight deals from San Jose to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Tue 8/126:30 amSJC - IAD

1 stop9h 19mDelta

Thu 8/143:26 pmIAD - SJC

1 stop10h 24mDelta

Deal found 7/3

$277

Mon 8/112:12 pmSJC - IAD

1 stop13h 22mFrontier

Mon 8/187:30 amIAD - SJC

1 stop8h 47mFrontier

Deal found 7/2

$283

Tue 7/298:40 amSJC - IAD

1 stop6h 45mSouthwest

Mon 8/45:00 amIAD - SJC

1 stop7h 15mSouthwest

Deal found 7/3

$284

Wed 8/206:30 pmSJC - IAD

1 stop10h 02mAlaska Airlines

Thu 9/255:52 pmIAD - SJC

1 stop7h 46mAlaska Airlines

Deal found 7/1

$296

Tue 9/306:00 amSJC - IAD

1 stop7h 50mAmerican Airlines

Sun 10/56:25 amIAD - SJC

1 stop9h 11mAmerican Airlines

Deal found 7/2

$298

Fri 8/16:15 amSJC - IAD

1 stop7h 10mHawaiian Airlines

Sat 8/95:25 pmIAD - SJC

1 stop8h 11mHawaiian Airlines

Deal found 7/3

$326

Last-minute flights from San Jose to Dulles Intl
Discover last-minute flight deals from San Jose to Dulles Intl. Data last updated July 3, 2025 and is based on user searches.

Tue 7/87:00 amSJC - IAD

2 stops12h 27mUnited Airlines

Tue 7/223:39 pmIAD - SJC

1 stop9h 56mUnited Airlines

Deal found 7/1

$489

Wed 7/97:47 pmSJC - IAD

1 stop20h 12mAlaska Airlines

Wed 7/238:19 pmIAD - SJC

1 stop16h 33mAlaska Airlines

Deal found 7/1

$383

Wed 7/910:00 amSJC - IAD

2 stops9h 45mSouthwest

Wed 7/235:35 pmIAD - SJC

1 stop8h 20mSouthwest

Deal found 7/1

$389

Wed 7/96:00 amSJC - IAD

2 stops13h 46mAmerican Airlines

Wed 7/239:03 amIAD - SJC

2 stops12h 26mAmerican Airlines

Deal found 7/1

$394

Thu 7/107:00 pmSJC - IAD

1 stop8h 34mFrontier

Mon 7/147:30 amIAD - SJC

1 stop8h 47mFrontier

Deal found 7/1

$304

Thu 7/107:00 pmSJC - IAD

1 stop8h 34mMultiple Airlines

Tue 7/226:27 amIAD - SJC

1 stop8h 49mMultiple Airlines

Deal found 6/30

$356

Thu 7/1011:00 pmSJC - IAD

1 stop7h 19mDelta

Fri 7/255:20 pmIAD - SJC

1 stop8h 30mDelta

Deal found 7/3

$384

Tue 7/298:40 amSJC - IAD

1 stop6h 45mSouthwest

Mon 8/45:00 amIAD - SJC

1 stop7h 15mSouthwest

Deal found 7/3

$284

Fri 8/16:15 amSJC - IAD

1 stop7h 10mHawaiian Airlines

Sat 8/95:25 pmIAD - SJC

1 stop8h 11mHawaiian Airlines

Deal found 7/3

$326

Mon 8/112:12 pmSJC - IAD

1 stop13h 22mFrontier

Mon 8/187:30 amIAD - SJC

1 stop8h 47mFrontier

Deal found 7/2

$283

Tue 8/126:30 amSJC - IAD

1 stop9h 19mDelta

Thu 8/143:26 pmIAD - SJC

1 stop10h 24mDelta

Deal found 7/3

$277

Wed 8/206:30 pmSJC - IAD

1 stop10h 02mAlaska Airlines

Thu 9/255:52 pmIAD - SJC

1 stop7h 46mAlaska Airlines

Deal found 7/1

$296

One-way flights from San Jose to Dulles Intl
Search for one-way flight options from San Jose to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Sat 8/26:55 amSJC - IAD

1 stop8h 20mSouthwest

Deal found 7/3

$126

Mon 7/212:12 pmSJC - IAD

1 stop13h 22mFrontier

Deal found 7/1

$130

Sat 8/27:09 pmSJC - IAD

2 stops10h 24mAmerican Airlines

Deal found 7/3

$131

Mon 11/37:00 amSJC - IAD

1 stop7h 06mHawaiian Airlines

Deal found 7/1

$134

Mon 11/37:00 amSJC - IAD

1 stop7h 06mAlaska Airlines

Deal found 7/3

$135

Mon 8/410:25 pmSJC - IAD

1 stop7h 34mDelta

Deal found 7/3

$139

Sat 8/166:24 pmSJC - IAD

1 stop8h 00mUnited Airlines

Deal found 7/2

$158

Sat 7/193:34 pmSJC - IAD

1 stop12h 00mMultiple Airlines

Deal found 7/2

$175

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Tue 8/12

10:58 pm-9:12 am

1 stop7h 14m

Washington, D.C. Dulles Intl

Tue 8/19

6:00 am-11:10 am

1 stop8h 10m

$277

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Mon 8/11

2:12 pm-6:34 am

1 stop13h 22m

Washington, D.C. Dulles Intl

Mon 8/18

7:30 am-1:17 pm

1 stop8h 47m

$283

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Tue 7/29

8:40 am-6:25 pm

1 stop6h 45m

Washington, D.C. Dulles Intl

Mon 8/4

5:00 am-9:15 am

1 stop7h 15m

$284

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Wed 8/20

6:30 pm-7:32 am

1 stop10h 02m

Washington, D.C. Dulles Intl

Thu 9/25

5:52 pm-10:38 pm

1 stop7h 46m

$296

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Tue 9/30

6:00 am-4:50 pm

1 stop7h 50m

Washington, D.C. Dulles Intl

Sun 10/5

6:25 am-12:36 pm

1 stop9h 11m

$298

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Fri 8/1

6:15 am-4:25 pm

1 stop7h 10m

Washington, D.C. Dulles Intl

Sat 8/9

5:25 pm-10:36 pm

1 stop8h 11m

$326

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Sat 8/2

6:55 am-6:15 pm

1 stop8h 20m

$126

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Mon 7/21

2:12 pm-6:34 am

1 stop13h 22m

$130

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Sat 8/2

7:09 pm-8:33 am

2 stops10h 24m

$131

San JoseWashington, D.C.

SJC - IAD

SJCIAD

San Jose

Mon 11/3

7:00 am-5:06 pm

1 stop7h 06m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 14 results

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?

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 July is currently the most expensive (average of $345). 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?

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.

Reviews of airlines servicing Dulles Intl

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

10,000 reviews

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

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

4,270 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

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

7,970 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.8

Good

2,545 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

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

8,845 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

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

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. 6 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 Delta is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $277. Additional round-trip tickets that might be worth considering are offered by Frontier and Southwest, with the lowest prices starting at $283 and $284, respectively. Delta is currently priced 31% 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 Southwest. According to our data, you can fly for as low as $126. Users have also found prices from $130 and $131 on Frontier 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 July is currently the most expensive (average of $345). 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.

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Top 6 airlines flying from San Jose to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$166	Average$248	FlexibilityNo cancel fee	On-time65%
American Airlines	Cheapest$198	Average$297	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$256	Average$374	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$258	Average$443	FlexibilityNo cancel fee	On-time63%
Alaska Airlines	Cheapest$264	Average$367	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$276	Average$445	FlexibilityNo cancel fee	On-time69%

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$126+ 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Jose to Dulles Intl with Cheapflights

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3. Compare prices and book

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

Round-trip from

One-way from

Popular in

Cheapest in

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Find flight deals from San Jose to Dulles Intl

Cheapest flights from San Jose to Dulles IntlExplore 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 July 3, 2025.

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 July 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Jose to Washington, D.C. Dulles Intl Airport that are best for you.

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.

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 June 27, 2025.

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

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 July 3, 2025.

Reviews of airlines servicing Dulles Intl

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.

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?

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

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

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

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

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

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

Traveling to a place near San Jose?

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Alternative routes for San Jose to Dulles Intl

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Top 6 airlines flying from San Jose to Dulles Intl

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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 July 3, 2025.