Cheap flights from San Francisco to Washington, D.C. from $157

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Washington, D.C. departing on 5/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap round-trip flights

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Frontier Logo
7:40 pm - 12:36 am
SFO
-
IAD
25h 56m
2 stops
Frontier Logo
7:05 am - 5:34 pm
IAD
-
SFO
13h 29m
1 stop
$275Frontier
Tue, Apr 14 - Sat, May 2
Frontier Logo
10:38 pm - 12:36 am
SFO
-
IAD
22h 58m
1 stop
Frontier Logo
7:15 am - 5:34 pm
IAD
-
SFO
13h 19m
1 stop
$279Frontier
Tue, Apr 21 - Tue, Apr 28
Frontier Logo
10:23 pm - 4:21 pm
SFO
-
IAD
14h 58m
1 stop
Frontier Logo
6:05 am - 5:34 pm
IAD
-
SFO
14h 29m
1 stop
$280Frontier
Fri, Apr 10 - Tue, Apr 14
Frontier Logo
5:26 pm - 8:12 am
SFO
-
IAD
11h 46m
1 stop
Frontier Logo
7:27 pm - 10:41 am
IAD
-
SFO
18h 14m
1 stop
$281Frontier
Wed, Jun 3 - Sun, Jun 7
Southwest Logo
6:20 am - 4:50 pm
SFO
-
IAD
7h 30m
1 stop
Southwest Logo
5:30 pm - 10:45 pm
IAD
-
SFO
8h 15m
1 stop
$282Southwest
Tue, Apr 21 - Tue, Apr 28
Frontier Logo
10:23 pm - 4:21 pm
SFO
-
IAD
14h 58m
1 stop
Frontier Logo
7:00 am - 5:34 pm
IAD
-
SFO
13h 34m
1 stop
$286Frontier
Fri, Apr 10 - Wed, Apr 15
Southwest Logo
10:30 am - 11:40 pm
SFO
-
IAD
10h 10m
2 stops
Southwest Logo
5:30 pm - 10:45 pm
IAD
-
SFO
8h 15m
1 stop
$288Southwest
Wed, Apr 22 - Wed, Apr 29
Frontier Logo
11:59 pm - 12:46 pm
SFO
-
IAD
9h 47m
1 stop
Frontier Logo
7:45 am - 7:34 pm
IAD
-
SFO
14h 49m
1 stop
$290Frontier
Thu, May 21 - Sun, May 24
Frontier Logo
2:47 pm - 6:12 pm
SFO
-
IAD
24h 25m
2 stops
Frontier Logo
8:20 am - 5:34 pm
IAD
-
SFO
12h 14m
1 stop
$291Frontier
Wed, Apr 15 - Tue, Apr 21
Frontier Logo
11:59 pm - 12:46 pm
SFO
-
IAD
9h 47m
1 stop
Frontier Logo
11:07 am - 7:34 pm
IAD
-
SFO
11h 27m
1 stop
$292Frontier
Sun, May 17 - Tue, May 19

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

Our best Frontier deals on San Francisco to Washington, D.C. Dulles Intl Airport flight tickets
Frontier
Apr 14
SFO7:40 pmSan Francisco
25h 56m
2 stops
IAD12:36 amWashington, D.C. Dulles Intl
May 2
IAD7:05 amWashington, D.C. Dulles Intl
13h 29m
1 stop
SFO5:34 pmSan Francisco
$275
Frontier
Apr 21
SFO10:38 pmSan Francisco
22h 58m
1 stop
IAD12:36 amWashington, D.C. Dulles Intl
Apr 28
IAD7:15 amWashington, D.C. Dulles Intl
13h 19m
1 stop
SFO5:34 pmSan Francisco
$279
Frontier
Apr 10
SFO10:23 pmSan Francisco
14h 58m
1 stop
IAD4:21 pmWashington, D.C. Dulles Intl
Apr 14
IAD6:05 amWashington, D.C. Dulles Intl
14h 29m
1 stop
SFO5:34 pmSan Francisco
$280

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

Our best Southwest deals on San Francisco to Washington, D.C. Dulles Intl Airport flight tickets
Southwest
Apr 21
SFO6:20 amSan Francisco
7h 30m
1 stop
IAD4:50 pmWashington, D.C. Dulles Intl
Apr 28
IAD5:30 pmWashington, D.C. Dulles Intl
8h 15m
1 stop
SFO10:45 pmSan Francisco
$282
Southwest
Apr 22
SFO10:30 amSan Francisco
10h 10m
2 stops
IAD11:40 pmWashington, D.C. Dulles Intl
Apr 29
IAD5:30 pmWashington, D.C. Dulles Intl
8h 15m
1 stop
SFO10:45 pmSan Francisco
$288
Southwest
Apr 28
SFO10:30 amSan Francisco
10h 10m
2 stops
IAD11:40 pmWashington, D.C. Dulles Intl
May 5
IAD4:30 pmWashington, D.C. Dulles Intl
9h 45m
2 stops
SFO11:15 pmSan Francisco
$293

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated March 24, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 4/14

7:40 pm-12:36 am

2 stops25h 56m

Washington, D.C. Dulles Intl

Sat 5/2

7:05 am-5:34 pm

1 stop13h 29m

$275

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 4/21

10:38 pm-12:36 am

1 stop22h 58m

Washington, D.C. Dulles Intl

Tue 4/28

7:15 am-5:34 pm

1 stop13h 19m

$279

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Fri 4/10

10:23 pm-4:21 pm

1 stop14h 58m

Washington, D.C. Dulles Intl

Tue 4/14

6:05 am-5:34 pm

1 stop14h 29m

$280

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 6/3

5:26 pm-8:12 am

1 stop11h 46m

Washington, D.C. Dulles Intl

Sun 6/7

7:27 pm-10:41 am

1 stop18h 14m

$281
Quickest round-trip

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 4/21

6:20 am-4:50 pm

1 stop7h 30m

Washington, D.C. Dulles Intl

Tue 4/28

5:30 pm-10:45 pm

1 stop8h 15m

$282

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Fri 4/10

10:23 pm-4:21 pm

1 stop14h 58m

Washington, D.C. Dulles Intl

Wed 4/15

7:00 am-5:34 pm

1 stop13h 34m

$286

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 4/22

10:30 am-11:40 pm

2 stops10h 10m

Washington, D.C. Dulles Intl

Wed 4/29

5:30 pm-10:45 pm

1 stop8h 15m

$288

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 5/21

11:59 pm-12:46 pm

1 stop9h 47m

Washington, D.C. Dulles Intl

Sun 5/24

7:45 am-7:34 pm

1 stop14h 49m

$290

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 4/15

2:47 pm-6:12 pm

2 stops24h 25m

Washington, D.C. Dulles Intl

Tue 4/21

8:20 am-5:34 pm

1 stop12h 14m

$291

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sun 5/17

11:59 pm-12:46 pm

1 stop9h 47m

Washington, D.C. Dulles Intl

Tue 5/19

11:07 am-7:34 pm

1 stop11h 27m

$292

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from San Francisco to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

In general, February is the cheapest month to fly from San Francisco to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $387. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $397.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Wednesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $505. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to Washington, D.C. Dulles Intl Airport for around $666.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from San Francisco in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $461 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $602 on average. Flights to Washington, D.C. Dulles Intl Airport from San Francisco in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest San Francisco to Washington, D.C. Dulles Intl flight route?

Fly from San Francisco to Washington, D.C. Dulles Intl for the best San Francisco - Washington, D.C. Dulles Intl flight prices

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $435 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from San Francisco for as low as $354 on momondo.

What cabin class options are available on San Francisco to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on San Francisco to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Francisco to Washington, D.C. Dulles Intl Airport flights?

No. A direct flight is the cheapest option for a flight between San Francisco to Washington, D.C. Dulles Intl Airport.

How have San Francisco to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of March 2026, prices for San Francisco to Washington, D.C. Dulles Intl Airport flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to Washington, D.C. Dulles Intl Airport (SFO to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Washington, D.C. Dulles Intl Airport

Best Price Found

$252

Fastest flight time

5h 06m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from San Francisco in the past 72 hours is $252. The best round-trip flight deal from San Francisco to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $430.
The fastest flight from San Francisco to Washington, D.C. Dulles Intl Airport takes 5h 06m
Direct flights go from San Francisco to Washington, D.C. Dulles Intl Airport every day.
  • How far is San Francisco to Washington, D.C. Dulles Intl by plane?

    The straight-line distance from San Francisco to Washington, D.C. Dulles Intl is 2409.9 mi. Flights usually cover this in 5h 06m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from San Francisco Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from San Francisco Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from San Francisco Airport to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from San Francisco Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from San Francisco to Washington, D.C. Dulles Intl Airport?

  • What is the most popular airline from San Francisco to Washington, D.C. Dulles Intl Airport?

Best airlines flying from San Francisco to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from San Francisco to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $105Free CancellationRating
5.7
3,017 reviews
Search Frontier flights
DeltaPriceFrom $128Free CancellationRating
7.9
8,325 reviews
Search Delta flights
American AirlinesPriceFrom $172Free CancellationRating
7.1
11,491 reviews
Search American Airlines flights
SouthwestPriceFrom $196Free CancellationRating
8.0
4,331 reviews
Search Southwest flights
Hawaiian AirlinesPriceFrom $230Free CancellationRating
7.8
2,840 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $238Free CancellationRating
7.9
12,105 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
9,474 reviews
Search United Airlines flights
  • United Airlines Flights From San Francisco to Washington, D.C. Dulles Intl Airport

    United Airlines flight deals from San Francisco to Washington, D.C. Dulles Intl Airport start from $257 round-trip. Over the 16 United Airlines flights for this route in a normal week, average airfare is usually $477 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Laurel
Colonial Beach
Gaithersburg
Towson
Silver Spring
Fredericksburg
Rockville
Tysons
Manassas
Sterling
Linthicum Heights
Springfield
Bethesda

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Washington, D.C.?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Francisco to Washington, D.C. for you.

Can I find flights from San Francisco to Washington, D.C. with flexible booking policies on momondo?

All flight searches from San Francisco to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Francisco to Washington, D.C.?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from San Francisco.

I’m not ready to book a flight from San Francisco to Washington, D.C. right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington, D.C. from San Francisco. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Thu 4/23
Thu 4/30

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