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Cheap flights from San Francisco to Washington, D.C. Dulles Intl Airport from £160

SFO — IAD
29 Nov — 6 Dec1
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

Fri 4/1219:04 -
2 stops19h 35m
Tue 8/1218:42 -
2 stops20h 33m
Deal found 30/10£305
Wed 2/1216:14 -
2 stops22h 25m
Sat 5/1207:00 -
1 stop11h 47m
Deal found 29/10£307
Wed 16/1219:04 -
2 stops19h 47m
Tue 5/118:53 -
1 stop22h 53m
Deal found 30/10£309
Fri 4/1219:04 -
2 stops19h 35m
Mon 7/1218:42 -
2 stops20h 33m
Deal found 28/10£310
Thu 31/1215:56 -
2 stops20h 17m
Sun 3/122:59 -
2 stops15h 45m
Deal found 27/10£310
Mon 23/1118:30 -
1 stop7h 40m
Mon 30/1113:09 -
1 stop23h 31m
Deal found 28/10£312
Mon 7/1217:50 -
1 stop8h 45m
Tue 5/118:53 -
1 stop16h 59m
Deal found 28/10£315
Wed 16/1206:00 -
1 stop8h 39m
Wed 6/118:53 -
1 stop16h 59m
Deal found 29/10£317
Wed 9/1216:14 -
2 stops22h 25m
Sun 13/1218:42 -
2 stops20h 33m
Deal found 30/10£319
Thu 3/1210:41 -
2 stops9h 55m
Mon 7/1215:00 -
2 stops11h 43m
Deal found 29/10£320
Sat 12/1222:35 -
Nonstop5h 08m
Sat 9/116:15 -
Nonstop6h 10m
Deal found 28/10£328

Find flight deals from San Francisco to Dulles Intl

Round-trip from

£305

One-way from

£160

Popular in

November

Cheapest in

February

Average price

£440

Good one-way deal

£384 or less
Alaska Airlines
  • Alaska Airlines
  • 4/12-8/12
  • 4 total stops
  • 40h 08m total
  • San Francisco to Washington, D.C.
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Alaska Airlines
  • Alaska Airlines
  • 4/12-31/12
  • 2 total stops
  • 19h 35m total
  • San Francisco to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£32 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).
Search Deals
Average for round-trip flights in October 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

Tue 15/12

06:00-18:26

1 stop9h 26m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£172

San FranciscoWashington, D.C.

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

SFOIAD

San Francisco

Mon 4/1

13:20-05:45

2 stops13h 25m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£178

San FranciscoWashington, D.C.

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

SFOIAD

San Francisco

Wed 30/12

21:25-05:36

Nonstop5h 11m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£179

San FranciscoWashington, D.C.

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

SFOIAD

San Francisco

Tue 29/12

21:25-05:36

Nonstop5h 11m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£179

San FranciscoWashington, D.C.

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

SFOIAD

San Francisco

Sun 20/12

21:25-05:36

Nonstop5h 11m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£194

San FranciscoWashington, D.C.

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

SFOIAD

San Francisco

Tue 17/11

06:00-16:26

1 stop7h 26m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£202

San FranciscoWashington, D.C.

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

SFOIAD

San Francisco

Thu 19/11

07:04-17:40

1 stop7h 36m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£202

San FranciscoWashington, D.C.

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

SFOIAD

San Francisco

Sun 11/4

22:30-09:11

1 stop7h 41m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£202

San FranciscoWashington, D.C.

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

SFOIAD

San Francisco

Sat 10/4

22:45-10:13

1 stop8h 28m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£202
Fastest return journey

San FranciscoWashington, D.C.

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

SFOIAD

San Francisco

Sun 22/11

23:15-07:18

Nonstop5h 03m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-21:00

Nonstop0h 00m

£209

Flights are sorted by cheapest return flights first.

Deals found on 25/10

Showing 1-10 of 23 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 74 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 £294). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of £461). 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 £343 and £627 in December.
The cheapest return price found within the last 5 days was £305 on Alaska Airlines (4 Dec–8 Dec).

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
5.5
Fair
2,516 reviews
Check prices

Overall

5.5

Entertainment

4.2

Boarding

5.8

Food

4.5

Comfort

5.4

Crew

6.5

Reviews

1 / 20
10.0
Excellent

Paola,Oct 2026

LAX - PDX

The operation was kind and professional, and I thought it was neat that the pilot shared over the intercom when we were passing over two landmarks - Yosemite and Lake Tahoe -- so we can look at the window.
Frontier
5.5
Fair
2,516 reviews
Frontier
5.5
Fair
2,516 reviews
Check prices

Overall

5.5

Entertainment

4.2

Boarding

5.8

Food

4.5

Comfort

5.4

Crew

6.5

Reviews

1 / 20
10.0
Excellent

Paola,Oct 2026

LAX - PDX

The operation was kind and professional, and I thought it was neat that the pilot shared over the intercom when we were passing over two landmarks - Yosemite and Lake Tahoe -- so we can look at the window.

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 11 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 £358, Alaska Airlines can have you in Washington, D.C. Dulles Intl Airport from San Francisco in 5h 11m. 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 £177. Frontier is 55% 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: ITA Airways (100%), Asiana Airlines (98%), Egyptair (96%).

  • 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 £384. While the most popular route (San Francisco - Washington, D.C. Dulles Intl) can be booked for £248 on average, our data indicates £408 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 £294). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of £461). 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 Reagan-National flights
Los Angeles to Dulles Intl flights

Top airline flying from San Francisco to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£177Average£332FlexibilityNo cancel feeOn-time62%
Search Frontier flights

Fly with Cheapflights

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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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