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

Frontier, at $281, was found to be the cheapest airline from San Francisco to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include American Airlines and United Airlines. You may be able to fly from San Francisco to Washington, D.C. Dulles Intl Airport for 37% less than the average price by searching for these airlines.

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 cheapest flights from San Francisco to Washington, D.C. Dulles Intl Airport?

The cheapest flight price from San Francisco to Washington, D.C. Dulles Intl Airport is $175. On average you can expect to pay $1,318. The most popular route, (San Francisco - Washington, D.C. Dulles Intl), can usually be booked for $257.

What are the most reliable airlines from San Francisco to Washington, D.C. Dulles Intl Airport?

No one likes to see their flight delayed. When booking a flight from San Francisco to Washington, D.C. Dulles Intl Airport consider choosing Asiana Airlines (83%), United Airlines (82%) or Air China (81%) as they are the most reliable in getting you off to your destination on time.

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

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from San Francisco to Washington, D.C. Dulles Intl Airport.

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

September is one of the best times of the year to fly to Washington, D.C. Dulles Intl Airport from San Francisco. Prices for September average $428 per person but you can even find prices for as low as $155. The most expensive prices can be found in the month of December. Opting for a September flight can save you 18% on your journey compared to booking in December

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

Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Washington, D.C. Dulles Intl. On average, San Francisco has 35 outbound flights to Washington, D.C. Dulles Intl per day from 9 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

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

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

How can I find direct flights from San Francisco 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 Francisco to Dulles Intl.

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

Yes. Cheapflights offers flight deals from San Francisco 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.

Flights from San Francisco, CA to Washington, D.C. Dulles Intl Airport (IAD) from $137

Q: How much does it cost to fly round-trip from San Francisco to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment. San Francisco to Washington, D.C. Dulles Intl Airport flights typically cost between $350 and $592 in August. The cheapest round-trip price found within the last 3 days was $281 on Frontier (Aug 17-Aug 19).

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Cheapflights Tip: The best prices from San Francisco to Washington, D.C. Dulles Intl are usually found in September or May, booked 43 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from San Francisco to Dulles Intl

Round-trip from	$281 (Booking.com)
One-way from	$137 (FlightHub)
Popular in	December
Cheapest in	September
Average price	$437
Good round-trip deal	$412 or less
Good one-way deal	$221 or less

From San Francisco to Washington, D.C. Dulles Intl

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One-way flight from San Francisco to Washington, D.C. Dulles Intl

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Highest demand for flights based on searches. 12% potential increase in price ($65 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 August 2025

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Price to beat on a round-trip flight from San Francisco to Washington, D.C. Dulles Intl.

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Price to beat on a one-way flight from San Francisco to Washington, D.C. Dulles Intl.

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Find flight deals from San Francisco to Dulles Intl

Cheapest flights from San Francisco to Dulles Intl
Explore the most affordable flight options available from San Francisco to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

Sun 8/178:53 pmSFO - IAD

1 stop12h 58mFrontier

Tue 8/196:14 amIAD - SFO

1 stop18h 07mFrontier

Deal found 7/30

$281

Wed 9/108:00 amSFO - IAD

1 stop7h 51mAmerican Airlines

Wed 9/1711:18 amIAD - SFO

2 stops10h 44mAmerican Airlines

Deal found 7/30

$282

Wed 8/67:00 amSFO - IAD

1 stop20h 34mFrontier

Mon 8/111:27 pmIAD - SFO

1 stop23h 58mFrontier

Deal found 7/31

$285

Tue 8/121:09 pmSFO - IAD

1 stop14h 25mFrontier

Tue 8/196:14 amIAD - SFO

1 stop18h 07mFrontier

Deal found 7/31

$286

Mon 10/612:50 amSFO - IAD

2 stops9h 56mAmerican Airlines

Sat 10/186:34 amIAD - SFO

2 stops10h 57mAmerican Airlines

Deal found 7/31

$287

Wed 8/137:00 amSFO - IAD

1 stop20h 34mFrontier

Sun 8/177:46 pmIAD - SFO

1 stop17h 39mFrontier

Deal found 7/30

$288

Thu 8/75:45 amSFO - IAD

1 stop21h 49mFrontier

Wed 8/137:30 amIAD - SFO

1 stop16h 51mFrontier

Deal found 7/31

$291

Fri 10/1710:45 pmSFO - IAD

Nonstop5h 17mUnited Airlines

Sat 10/188:30 amIAD - SFO

Nonstop5h 39mUnited Airlines

Deal found 8/1

$292

Fri 8/1511:22 pmSFO - IAD

1 stop9h 05mMultiple Airlines

Tue 8/195:25 pmIAD - SFO

1 stop9h 25mMultiple Airlines

Deal found 7/29

$293

Thu 8/218:00 pmSFO - IAD

1 stop7h 30mFrontier

Mon 8/258:00 amIAD - SFO

1 stop8h 15mFrontier

Deal found 8/1

$294

Tue 9/911:30 amSFO - IAD

1 stop9h 53mAlaska Airlines

Thu 9/186:09 pmIAD - SFO

1 stop8h 55mAlaska Airlines

Deal found 7/31

$296

Mon 9/812:35 amSFO - IAD

1 stop9h 50mDelta

Thu 9/185:25 pmIAD - SFO

1 stop9h 32mDelta

Deal found 7/30

$297

Best flights from San Francisco to Dulles Intl
Discover carefully curated flight deals from San Francisco to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 2, 2025.

Sun 8/178:53 pmSFO - IAD

1 stop12h 58mFrontier

Tue 8/196:14 amIAD - SFO

1 stop18h 07mFrontier

Deal found 7/30

$281

Wed 9/108:00 amSFO - IAD

1 stop7h 51mAmerican Airlines

Wed 9/1711:18 amIAD - SFO

2 stops10h 44mAmerican Airlines

Deal found 7/30

$282

Fri 10/1710:45 pmSFO - IAD

Nonstop5h 17mUnited Airlines

Sat 10/188:30 amIAD - SFO

Nonstop5h 39mUnited Airlines

Deal found 8/1

$292

Fri 8/1511:22 pmSFO - IAD

1 stop9h 05mMultiple Airlines

Tue 8/195:25 pmIAD - SFO

1 stop9h 25mMultiple Airlines

Deal found 7/29

$293

Tue 9/911:30 amSFO - IAD

1 stop9h 53mAlaska Airlines

Thu 9/186:09 pmIAD - SFO

1 stop8h 55mAlaska Airlines

Deal found 7/31

$296

Mon 9/812:35 amSFO - IAD

1 stop9h 50mDelta

Mon 9/155:25 pmIAD - SFO

1 stop8h 16mDelta

Deal found 7/31

$297

Tue 9/99:55 amSFO - IAD

2 stops9h 10mSouthwest

Thu 9/114:30 pmIAD - SFO

1 stop9h 50mSouthwest

Deal found 7/29

$312

Wed 8/67:00 amSFO - IAD

1 stop20h 34mFrontier

Sun 8/107:46 pmIAD - SFO

1 stop17h 39mFrontier

Deal found 7/30

$285

Mon 10/612:50 amSFO - IAD

2 stops9h 56mAmerican Airlines

Sat 10/186:34 amIAD - SFO

2 stops10h 57mAmerican Airlines

Deal found 7/31

$287

Fri 8/1511:22 pmSFO - IAD

1 stop9h 05mMultiple Airlines

Tue 8/198:10 amIAD - SFO

Nonstop5h 45mMultiple Airlines

Deal found 7/30

$309

Tue 8/121:09 pmSFO - IAD

1 stop14h 25mFrontier

Tue 8/196:14 amIAD - SFO

1 stop18h 07mFrontier

Deal found 7/31

$286

Wed 10/228:45 amSFO - IAD

2 stops12h 38mAlaska Airlines

Tue 10/287:43 amIAD - SFO

1 stop11h 00mAlaska Airlines

Deal found 7/30

$315

Last-minute flights from San Francisco to Dulles Intl
Discover last-minute flight deals from San Francisco to Dulles Intl. Data last updated August 2, 2025 and is based on user searches.

Wed 8/67:00 amSFO - IAD

1 stop20h 34mFrontier

Sun 8/107:46 pmIAD - SFO

1 stop17h 39mFrontier

Deal found 7/30

$285

Wed 8/67:00 amSFO - IAD

1 stop20h 34mFrontier

Fri 8/811:04 amIAD - SFO

1 stop14h 31mFrontier

Deal found 7/31

$322

Wed 8/67:00 amSFO - IAD

1 stop20h 34mFrontier

Sun 8/107:46 pmIAD - SFO

1 stop17h 39mFrontier

Deal found 8/1

$324

Wed 8/67:00 amSFO - IAD

1 stop20h 34mFrontier

Mon 8/117:30 amIAD - SFO

1 stop7h 45mFrontier

Deal found 8/1

$325

Thu 8/75:45 amSFO - IAD

1 stop21h 49mFrontier

Wed 8/137:30 amIAD - SFO

1 stop16h 51mFrontier

Deal found 7/31

$291

Thu 8/75:45 amSFO - IAD

1 stop21h 49mFrontier

Fri 8/151:27 pmIAD - SFO

1 stop23h 58mFrontier

Deal found 7/30

$305

Thu 8/75:45 amSFO - IAD

1 stop21h 49mFrontier

Mon 8/111:27 pmIAD - SFO

1 stop23h 58mFrontier

Deal found 7/31

$311

Fri 8/810:29 pmSFO - IAD

1 stop13h 43mFrontier

Fri 8/1511:04 amIAD - SFO

1 stop14h 31mFrontier

Deal found 7/31

$298

Sat 8/96:55 amSFO - IAD

1 stop20h 39mFrontier

Fri 8/1511:04 amIAD - SFO

1 stop14h 31mFrontier

Deal found 7/29

$297

Sun 8/108:53 pmSFO - IAD

1 stop12h 49mFrontier

Wed 8/137:30 amIAD - SFO

1 stop16h 51mFrontier

Deal found 8/1

$318

Sun 8/1010:29 pmSFO - IAD

1 stop12h 20mFrontier

Wed 8/137:30 amIAD - SFO

1 stop16h 51mFrontier

Deal found 7/29

$321

Mon 8/119:43 pmSFO - IAD

1 stop29h 51mFrontier

Mon 8/258:00 amIAD - SFO

1 stop16h 21mFrontier

Deal found 7/30

$301

One-way flights from San Francisco to Dulles Intl
Search for one-way flight options from San Francisco to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 2, 2025.

Wed 8/67:00 amSFO - IAD

1 stop20h 34mFrontier

Deal found 7/31

$137

Wed 10/16:00 amSFO - IAD

1 stop7h 52mHawaiian Airlines

Deal found 7/31

$138

Tue 9/3012:45 amSFO - IAD

1 stop7h 33mDelta

Deal found 7/31

$139

Wed 8/67:00 amSFO - IAD

1 stop20h 34mFrontier

Deal found 7/31

$142

Thu 8/211:58 pmSFO - IAD

1 stop13h 32mFrontier

Deal found 7/30

$143

Sat 8/306:30 amSFO - IAD

2 stops10h 12mAmerican Airlines

Deal found 7/30

$144

Wed 10/111:30 amSFO - IAD

1 stop9h 53mHawaiian Airlines

Deal found 8/1

$148

Thu 8/218:00 pmSFO - IAD

1 stop7h 30mFrontier

Deal found 8/1

$149

Fri 10/311:57 pmSFO - IAD

1 stop9h 05mFrontier

Deal found 8/1

$150

Fri 8/2211:55 pmSFO - IAD

1 stop9h 07mFrontier

Deal found 7/31

$151

Mon 8/49:43 pmSFO - IAD

1 stop29h 51mFrontier

Deal found 8/1

$154

Mon 8/184:31 pmSFO - IAD

1 stop11h 03mFrontier

Deal found 8/1

$155

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sun 8/17

8:53 pm-12:51 pm

1 stop12h 58m

Washington, D.C. Dulles Intl

Tue 8/19

6:14 am-9:21 pm

1 stop18h 07m

$281

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 9/10

8:00 am-6:51 pm

1 stop7h 51m

Washington, D.C. Dulles Intl

Wed 9/17

11:18 am-7:02 pm

2 stops10h 44m

$282

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 8/6

7:00 am-6:34 am

1 stop20h 34m

Washington, D.C. Dulles Intl

Sun 8/10

7:46 pm-10:25 am

1 stop17h 39m

$285

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 8/12

1:09 pm-6:34 am

1 stop14h 25m

Washington, D.C. Dulles Intl

Tue 8/19

6:14 am-9:21 pm

1 stop18h 07m

$286

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Mon 10/6

12:50 am-1:46 pm

2 stops9h 56m

Washington, D.C. Dulles Intl

Sat 10/18

6:34 am-2:31 pm

2 stops10h 57m

$287

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 8/13

7:00 am-6:34 am

1 stop20h 34m

Washington, D.C. Dulles Intl

Sun 8/17

7:46 pm-10:25 am

1 stop17h 39m

$288

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 8/7

5:45 am-6:34 am

1 stop21h 49m

Washington, D.C. Dulles Intl

Wed 8/13

7:30 am-9:21 pm

1 stop16h 51m

$291

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Fri 10/17

10:45 pm-7:02 am

Nonstop5h 17m

Washington, D.C. Dulles Intl

Sat 10/18

8:30 am-11:09 am

Nonstop5h 39m

$292

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Fri 8/15

11:22 pm-11:27 am

1 stop9h 05m

Washington, D.C. Dulles Intl

Tue 8/19

5:25 pm-11:50 pm

1 stop9h 25m

$293

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 8/21

8:00 pm-6:30 am

1 stop7h 30m

Washington, D.C. Dulles Intl

Mon 8/25

8:00 am-1:15 pm

1 stop8h 15m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 60 results

...

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

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Francisco 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 Francisco to Washington, D.C. Dulles Intl Airport

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

Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, July is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of $306). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 SFO to IAD?

When flying from San Francisco to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 14% versus a flight at noon.

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

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

Weekly flight availability from San Francisco to Washington, D.C. Dulles Intl Airport

The most flights from SFO to IAD are scheduled on a Friday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 on average).

How much does it cost to fly round-trip from San Francisco to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from San Francisco to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up 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

4,246 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

7,983 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

2,613 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

8,904 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 Francisco to Washington, D.C. Dulles Intl?
Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Washington, D.C. Dulles Intl. On average, San Francisco has 35 outbound flights to Washington, D.C. Dulles Intl per day from 9 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.
What are the cheapest airlines flying from San Francisco to Washington, D.C. Dulles Intl Airport round-trip?
Frontier, at $281, was found to be the cheapest airline from San Francisco to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include American Airlines and United Airlines. You may be able to fly from San Francisco to Washington, D.C. Dulles Intl Airport for 37% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from San Francisco to Washington, D.C. Dulles Intl Airport one-way?
The cheapest airlines for a one-way flight from San Francisco to Washington, D.C. Dulles Intl Airport are Frontier ($137), Hawaiian Airlines ($138), and Delta ($139).
What are the most reliable airlines from San Francisco to Washington, D.C. Dulles Intl Airport?
No one likes to see their flight delayed. When booking a flight from San Francisco to Washington, D.C. Dulles Intl Airport consider choosing Asiana Airlines (83%), United Airlines (82%) or Air China (81%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from San Francisco to Washington, D.C. Dulles Intl Airport?
The cheapest flight price from San Francisco to Washington, D.C. Dulles Intl Airport is $175. On average you can expect to pay $1,318. The most popular route, (San Francisco - Washington, D.C. Dulles Intl), can usually be booked for $257.
Can I find deals for flights from San Francisco to Dulles Intl that include hotel bookings?
Yes. In addition to deals on San Francisco to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Francisco 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 Francisco to Dulles Intl.
Can I find deals for business class flights from San Francisco to Dulles Intl?
Yes. Cheapflights offers flight deals from San Francisco 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 Francisco to Washington, D.C. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of $306). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 9 airlines flying from San Francisco to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$48	Average$108	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$128	Average$261	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$172	Average$391	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$208	Average$392	FlexibilityNo cancel fee	On-timeN/A
Sun Country Air	Cheapest$218	Average$279	FlexibilityNo cancel fee	On-time83%
Hawaiian Airlines	Cheapest$248	Average$397	FlexibilityNo cancel fee	On-time85%
Alaska Airlines	Cheapest$255	Average$404	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$296	Average$449	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$297	Average$500	FlexibilityNo cancel fee	On-time69%

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Cheap flights from San Francisco (SFO) to Dulles Intl (IAD) - Compare and Save

Cheapflights Tip: The best prices from San Francisco to Washington, D.C. Dulles Intl are usually found in September or May, booked 43 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from San Francisco to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San Francisco to Dulles Intl

Cheapest flights from San Francisco to Dulles IntlExplore the most affordable flight options available from San Francisco to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

Explore the most affordable flight options available from San Francisco to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

Cheapflights Fare Finder

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

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

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Francisco with our price prediction graph.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Dulles Intl. Price data was last updated on August 1, 2025.

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

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

Find hourly flight availability from San Francisco 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 August 2, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Dulles Intl. Price data was last updated on July 27, 2025.

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Top 9 airlines flying from San Francisco to Dulles Intl

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Cheapest flights from San Francisco to Dulles Intl
Explore the most affordable flight options available from San Francisco to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.