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Cheap flights from San Francisco to Washington, D.C. Dulles Intl Airport from £108

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — IAD
28 fev — 7 mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco to Dulles Intl

Enter your travel dates to find the best prices.

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 29 janeiro 2026.

sáb 28/221:20
SFO
-
IAD
Nonstop5h 07m
United Airlines
dom 8/322:10
IAD
-
SFO
Nonstop6h 18m
United Airlines
Deal found 28/1£172
qua 25/206:05
SFO
-
IAD
1 stop6h 45m
Southwest
qua 4/309:05
IAD
-
SFO
2 stops15h 10m
Southwest
Deal found 28/1£175
qui 26/222:46
SFO
-
IAD
1 stop8h 57m
Frontier
qui 5/311:22
IAD
-
SFO
2 stops16h 06m
Frontier
Deal found 27/1£184
qua 15/421:30
SFO
-
IAD
Nonstop5h 26m
United Airlines
seg 20/422:10
IAD
-
SFO
Nonstop6h 07m
United Airlines
Deal found 26/1£186
sáb 7/310:20
SFO
-
IAD
1 stop9h 50m
Delta
ter 10/315:35
IAD
-
SFO
1 stop10h 44m
Delta
Deal found 28/1£186
ter 24/207:40
SFO
-
IAD
2 stops11h 15m
Southwest
qui 26/215:25
IAD
-
SFO
1 stop11h 00m
Southwest
Deal found 29/1£190
qua 13/516:55
SFO
-
IAD
Nonstop5h 29m
United Airlines
ter 19/522:10
IAD
-
SFO
Nonstop6h 06m
United Airlines
Deal found 26/1£192
qui 19/213:01
SFO
-
IAD
1 stop7h 08m
Delta
ter 24/206:00
IAD
-
SFO
1 stop8h 04m
Delta
Deal found 28/1£194
sex 20/221:20
SFO
-
IAD
Nonstop5h 07m
United Airlines
sáb 21/222:10
IAD
-
SFO
Nonstop6h 18m
United Airlines
Deal found 28/1£194
qui 19/214:05
SFO
-
IAD
1 stop7h 16m
Delta
dom 22/207:30
IAD
-
SFO
1 stop10h 10m
Delta
Deal found 28/1£201

Find 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 29 janeiro 2026.

Round-trip from

£172

One-way from

£108

Popular in

January

Cheapest in

February

Average price

£392

Good round-trip deal

£471 or less
United Airlines
  • United Airlines
  • 26/2-28/2
  • Nonstop
  • 11h 24m total
  • San Francisco to Washington, D.C.
Search Deals
United Airlines
  • United Airlines
  • 9/3
  • Nonstop
  • 5h 06m total
  • San Francisco to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£25 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from San Francisco to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
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 29 janeiro 2026.
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

San Francisco

Fly to

Dulles Intl

Route

Depart

Return

Price

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

qua 25/2

06:05-15:50

1 stop6h 45m

Washington, D.C. Dulles Intl

qua 4/3

09:05-21:15

2 stops15h 10m

£175

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

qua 1/4

08:00-20:46

1 stop9h 46m

Washington, D.C. Dulles Intl

ter 7/4

07:00-14:05

1 stop10h 05m

£186

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

seg 23/2

22:50-11:35

1 stop9h 45m

Washington, D.C. Dulles Intl

qua 25/2

06:00-11:04

1 stop8h 04m

£194

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

qua 25/2

09:50-21:55

1 stop9h 05m

Washington, D.C. Dulles Intl

dom 1/3

19:00-00:05

1 stop8h 05m

£201

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

qui 19/2

14:05-00:21

1 stop7h 16m

Washington, D.C. Dulles Intl

dom 22/2

07:30-14:40

1 stop10h 10m

£201

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

qui 5/3

05:30-16:05

1 stop7h 35m

Washington, D.C. Dulles Intl

seg 9/3

19:45-00:50

1 stop8h 05m

£201

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

seg 20/4

23:59-11:32

1 stop8h 33m

Washington, D.C. Dulles Intl

sex 24/4

18:37-23:54

1 stop8h 17m

£201

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

sáb 28/2

07:55-21:45

2 stops10h 50m

Washington, D.C. Dulles Intl

sáb 7/3

18:05-23:15

1 stop8h 10m

£204

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

seg 2/3

05:30-17:00

1 stop8h 30m

Washington, D.C. Dulles Intl

ter 3/3

09:05-21:15

2 stops15h 10m

£204

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

sáb 21/2

21:20-05:27

Nonstop5h 07m

Washington, D.C. Dulles Intl

qua 25/2

22:10-01:28

Nonstop6h 18m

£230

Flights are sorted by cheapest return flights first.

Deals found on 29/1

Showing 1-10 of 20 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.

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 return flight from San Francisco to Dulles Intl. Price data was last updated on 23 January 2026.

Booking 83 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, May is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of £86). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of £201). 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 29 janeiro 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Francisco to Washington, D.C. Dulles Intl Airport as you normally would.

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 21 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.

  • How long is the flight from San Francisco to Washington, D.C. Dulles Intl Airport?

    For as low as £172, United Airlines can have you in Washington, D.C. Dulles Intl Airport from San Francisco in 5h 08m. San Francisco and Washington, D.C. Dulles Intl Airport are separated by a distance of 2412 mi. This flight may include one or multiple stops.

  • 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: Brussels Airlines (92%), Egyptair (90%), United Airlines (87%).

  • 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 £419. While the most popular route (San Francisco - Washington, D.C. Dulles Intl) can be booked for £153 on average, our data indicates £471 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, May is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of £86). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of £201). 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

Travelling 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
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park

Browse thousands of different options on Cheapflights for your next trip

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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.
Los Angeles to Reagan-National flights
Los Angeles to Dulles Intl flights

Fly with Cheapflights

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How does Cheapflights help users find flights from San Francisco to Dulles Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from San Francisco today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Dulles Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Francisco to Dulles Intl for you. Better yet — we are completely free to use.

Can Cheapflights find flights from San Francisco to Dulles Intl with no change fees?

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.

Can Cheapflights notify me if prices for flights from San Francisco to Dulles Intl become cheaper?

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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