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Cheap flights from San Francisco to Washington, D.C. Dulles Intl Airport from £121

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 17/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — IAD
26 Jan — 2 Feb1
1 adult

The best prices from San Francisco to Washington, D.C. Dulles Intl are usually found in September or August, booked 86 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from San Francisco to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 21 January 2025.

Round-trip from

£209

One-way from

£121

Popular in

June

Cheapest in

September

Average price

£404

Good one-way deal

£325 or less
United Airlines
  • United Airlines
  • 12/4-15/4
  • Nonstop
  • 11h 21m total
  • San Francisco to Washington, D.C.
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Delta
  • Delta
  • 17/3
  • 1 total stop
  • 7h 28m total
  • San Francisco to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£27 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in January 2025
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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 21 January 2025.

Sat 12/421:01SFO - IAD
Nonstop5h 14mUnited Airlines
Tue 15/422:15IAD - SFO
Nonstop6h 07mUnited Airlines
Deal found 20/1£209
Wed 19/211:05SFO - IAD
2 stops9h 00mSouthwest
Wed 26/215:55IAD - SFO
1 stop8h 40mSouthwest
Deal found 21/1£213
Tue 4/306:00SFO - IAD
1 stop7h 18mAlaska Airlines
Wed 12/317:18IAD - SFO
1 stop17h 42mAlaska Airlines
Deal found 21/1£219
Fri 28/221:30SFO - IAD
1 stop20h 35mDelta
Tue 4/306:05IAD - SFO
1 stop8h 27mDelta
Deal found 21/1£239
Tue 24/618:25SFO - IAD
1 stop14h 18mSun Country Air
Wed 2/712:40IAD - SFO
1 stop13h 10mSun Country Air
Deal found 20/1£313

Find flights from San Francisco to Dulles Intl within your budget

Customise your flight search to find flights from San Francisco 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 858,174 searches. Data last updated 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sat 12/4

21:01-05:15

Nonstop5h 14m

Washington, D.C. Dulles Intl

Tue 15/4

22:15-01:22

Nonstop6h 07m

£209

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 19/2

11:05-23:05

2 stops9h 00m

Washington, D.C. Dulles Intl

Wed 26/2

15:55-21:35

1 stop8h 40m

£213

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 4/3

06:00-16:18

1 stop7h 18m

Washington, D.C. Dulles Intl

Wed 12/3

17:18-08:00

1 stop17h 42m

£219

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Fri 28/2

21:30-21:05

1 stop20h 35m

Washington, D.C. Dulles Intl

Tue 4/3

06:05-11:32

1 stop8h 27m

£239

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 24/6

18:25-11:43

1 stop14h 18m

Washington, D.C. Dulles Intl

Wed 2/7

12:40-22:50

1 stop13h 10m

£313

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Mon 17/3

05:55-16:23

1 stop7h 28m

£121

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 19/2

11:05-23:05

2 stops9h 00m

£125

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 14/5

06:30-14:50

Nonstop5h 20m

£133

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 19/3

08:20-16:30

Nonstop5h 10m

£137

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 20/3

23:59-12:34

1 stop9h 35m

£157

Flights are sorted by cheapest return flights first.

Deals found on 21/1

Showing 1-10 of 11 results
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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 return 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.

Travel insights for flights from San Francisco to Dulles Intl

Get recent, data-driven insights about flights from San Francisco to Dulles Intl including ideal travel times, pricing trends, and more.

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 return flight from San Francisco to Dulles Intl. Price data was last updated on 17 January 2025.

Booking 86 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, January is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of £599). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £944). 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?

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 21 January 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 61% on flights from San Francisco to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the morning.

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

Explore weekly flight availability from San Francisco to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 January 2025.

The most flights from SFO to IAD are scheduled on a Monday (23 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (12 on average).

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 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 21 January 2025.
Read through reviews of airlines operating flights from San Francisco to Washington, D.C., such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very Good
4,662 reviews
Check prices

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very Good
4,662 reviews
Southwest
8.1
Very Good
4,662 reviews
Check prices

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very Good
9,706 reviews
Southwest
8.1
Very Good
4,662 reviews
Check prices

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very Good
8,521 reviews
Southwest
8.1
Very Good
4,662 reviews
Check prices

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,985 reviews
Southwest
8.1
Very Good
4,662 reviews
Check prices

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very Good
4,662 reviews
Check prices

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from San Francisco 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 Francisco to Washington, D.C. Dulles Intl?

    San Francisco (SFO) is the airport you will fly out of if you book a flight from San Francisco to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from San Francisco; the airport handles an average of 16 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the San Francisco airport to Washington, D.C. Dulles Intl. It is only a 11.8 mi journey to San Francisco (SFO) from San Francisco’s city center.

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

    Cheapflights users have booked flights from San Francisco to Washington, D.C. Dulles Intl Airport round-trip from £209. Other airlines that can offer you cheap pricing are Southwest, from £213, and Alaska Airlines, from £219. United Airlines is 47% cheaper than the average price of flights available within the next 90 days to this destination.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at £121. Southwest flights start at £125 while deals on United Airlines start at £133 one-way.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Washington, D.C. Dulles Intl Airport on time: Air China (87%), Brussels Airlines (85%), Air New Zealand (85%).

  • What are the cheapest flights from San Francisco to Washington, D.C. Dulles Intl Airport?

    Looking at all options, your cheapest flight can be booked for £234. While the most popular route (San Francisco - Washington, D.C. Dulles Intl) can be booked for £501 on average our data indicates £437 when flying from San Francisco to Washington, D.C. Dulles Intl Airport.

  • 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 holiday 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, January is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of £599). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £944). 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

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Alternative routes for San Francisco 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 Dulles Intl flights

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Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco to Dulles Intl flexibly with Cheapflights today.

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Yes, Cheapflights offers price alerts on San Francisco to Dulles Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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