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Cheap flights from San Francisco to Washington, D.C. Dulles Intl Airport from £146

SFO — IAD
13 Oct — 20 Oct1
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

Sat 24/1021:30 -
Nonstop5h 16m
Tue 27/1017:38 -
Nonstop5h 57m
Deal found 10/9£308
Sat 24/1007:03 -
1 stop7h 47m
Sat 31/1007:02 -
2 stops12h 58m
Deal found 9/9£316
Sat 24/1007:03 -
2 stops13h 56m
Wed 28/1007:02 -
2 stops16h 31m
Deal found 11/9£320
Tue 20/1007:27 -
2 stops13h 32m
Sat 24/1019:24 -
1 stop17h 13m
Deal found 10/9£322
Wed 18/1106:00 -
1 stop7h 26m
Wed 2/1219:06 -
1 stop8h 04m
Deal found 10/9£323
Wed 28/1007:27 -
2 stops13h 32m
Mon 2/1118:46 -
2 stops20h 30m
Deal found 9/9£327
Tue 20/1007:03 -
1 stop7h 47m
Fri 23/1017:33 -
1 stop23h 50m
Deal found 10/9£327
Fri 30/1007:27 -
2 stops13h 32m
Wed 4/1118:46 -
1 stop30h 11m
Deal found 10/9£329
Sat 17/1013:50 -
Nonstop5h 17m
Mon 26/1018:20 -
Nonstop6h 09m
Deal found 11/9£330
Wed 14/1007:27 -
2 stops13h 32m
Mon 19/1019:24 -
1 stop22h 27m
Deal found 11/9£331
Mon 23/1106:17 -
1 stop15h 03m
Tue 1/1212:35 -
1 stop9h 56m
Deal found 10/9£333
Wed 2/1206:00 -
1 stop7h 03m
Sat 9/106:10 -
1 stop7h 33m
Deal found 13/9£338

Find flight deals from San Francisco to Dulles Intl

Round-trip from

£308

One-way from

£146

Popular in

June

Cheapest in

February

Average price

£378

Good one-way deal

£851 or less
United Airlines
  • United Airlines
  • 14/10-17/10
  • Nonstop
  • 10h 57m total
  • San Francisco to Washington, D.C.
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Delta
  • Delta
  • 22/11-31/12
  • 1 total stop
  • 15h 03m total
  • San Francisco to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£30 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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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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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

Cheapest return flight

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Sat 17/10

22:00-11:50

1 stop10h 50m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£162

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Sat 10/10

06:45-15:00

Nonstop5h 15m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£169

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Sat 17/10

07:03-23:59

2 stops13h 56m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£175

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Tue 6/10

08:47-23:59

2 stops12h 12m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£175

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Tue 13/10

21:30-05:46

Nonstop5h 16m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£177

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Fri 30/10

07:27-05:40

2 stops19h 13m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£177

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Fri 27/11

06:17-19:54

1 stop10h 37m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£184

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Sun 4/10

06:45-15:04

Nonstop5h 19m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£191

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Fri 30/10

06:05-18:19

1 stop9h 14m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£191
Fastest return journey

San FranciscoWashington, D.C.

SFO San Francisco - IAD Washington, D.C. Dulles Intl

SFOIAD

San Francisco

Mon 2/11

21:28-05:35

Nonstop5h 07m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£191

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 22 resultsSorted by cheapest first
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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

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 41 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, February is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of £288). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of £438). 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?

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.

How much does it cost for a return flight 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 £326 and £438 in October.
The cheapest return price found within the last 5 days was £308 on United Airlines (24 Oct–31 Oct).

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with Frontier from San Francisco 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.
Frontier
5.6
Fair
2,603 reviews
Check prices

Comfort

5.4

Entertainment

4.2

Boarding

5.9

Crew

6.5

Food

4.5

Overall

5.6

Reviews

1 / 20
2.0
Mediocre

Shawn,Sept 2025

SAN - SFO

The flight was over booked and was unadble to get help with issue. I could not get a refund or rebooked in order to make my trip
Frontier
5.6
Fair
2,603 reviews
Frontier
5.6
Fair
2,603 reviews
Check prices

Comfort

5.4

Entertainment

4.2

Boarding

5.9

Crew

6.5

Food

4.5

Overall

5.6

Reviews

1 / 20
2.0
Mediocre

Shawn,Sept 2025

SAN - SFO

The flight was over booked and was unadble to get help with issue. I could not get a refund or rebooked in order to make my trip

Related info for your journey

  • 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 22 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 1 airline has flights from the San Francisco airport to Washington, D.C. Dulles Intl. It is only a 11.0 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 £330, United Airlines can have you in Washington, D.C. Dulles Intl Airport from San Francisco in 5h 10m. 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 is the cheapest airline to fly 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 £175. Frontier is 52% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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: Asiana Airlines (83%), Brussels Airlines (79%), Austrian Airlines (78%).

  • 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 £231. While the most popular route (San Francisco - Washington, D.C. Dulles Intl) can be booked for £288 on average, our data indicates £851 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, February is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of £288). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of £438). 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
Alexandria
Gaithersburg
Oxon Hill
Hanover
Woodbridge
Glen Burnie
Springfield
Sterling

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for San Francisco to Dulles Intl

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

Top airline flying from San Francisco to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£175Average£327FlexibilityNo cancel feeOn-time62%
Search Frontier flights

Fly with Cheapflights

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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