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Cheap flights from San Francisco to Washington, D.C. from $140

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 1/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

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Hawaiian Airlines Logo
6:18 pm - 4:26 pm
SFO
-
IAD
19h 08m1 stop
Hawaiian Airlines Logo
6:20 pm - 11:59 pm
IAD
-
SFO
8h 39m1 stop
$265Hawaiian Airlines
Thu, Feb 5 - Thu, Feb 12
Frontier Logo
4:01 pm - 7:55 am
SFO
-
IAD
36h 54m2 stops
Frontier Logo
6:00 am - 1:24 pm
IAD
-
SFO
10h 24m1 stop
$267Frontier
Wed, Jan 7 - Wed, Jan 14
Frontier Logo
11:20 pm - 11:28 am
SFO
-
IAD
9h 08m1 stop
Frontier Logo
6:00 am - 1:18 pm
IAD
-
SFO
10h 18m1 stop
$268Frontier
Thu, Jan 8 - Sun, Jan 11
Multiple Airlines Logo
6:40 am - 5:27 pm
SFO
-
IAD
7h 47m1 stop
Multiple Airlines Logo
11:43 am - 9:39 pm
IAD
-
SFO
12h 56m1 stop
$270Multiple Airlines
Tue, Feb 17 - Sun, Feb 22
United Airlines Logo
9:20 pm - 5:32 am
SFO
-
IAD
5h 12mnonstop
United Airlines Logo
8:25 am - 11:43 am
IAD
-
SFO
6h 18mnonstop
$272United Airlines
Sat, Jan 17 - Sun, Jan 18
Frontier Logo
11:00 pm - 10:15 am
SFO
-
IAD
8h 15m1 stop
Frontier Logo
11:41 am - 12:28 am
IAD
-
SFO
15h 47m2 stops
$273Frontier
Sat, Feb 14 - Mon, Feb 23
American Airlines Logo
6:00 am - 4:31 pm
SFO
-
IAD
7h 31m1 stop
American Airlines Logo
5:26 pm - 11:12 pm
IAD
-
SFO
8h 46m1 stop
$276American Airlines
Tue, Jan 20 - Tue, Jan 27
United Airlines Logo
11:20 am - 7:27 pm
SFO
-
IAD
5h 07mnonstop
United Airlines Logo
6:20 am - 9:35 am
IAD
-
SFO
6h 15mnonstop
$277United Airlines
Wed, Feb 18 - Sun, Feb 22
Frontier Logo
7:00 am - 8:56 pm
SFO
-
IAD
34h 56m2 stops
Frontier Logo
6:00 am - 1:24 pm
IAD
-
SFO
10h 24m1 stop
$279Frontier
Wed, Jan 7 - Wed, Jan 14
Hawaiian Airlines Logo
7:00 am - 5:04 pm
SFO
-
IAD
7h 04m1 stop
Hawaiian Airlines Logo
6:04 pm - 2:00 pm
IAD
-
SFO
22h 56m1 stop
$280Hawaiian Airlines
Sun, Jan 25 - Tue, Jan 27

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
Jan 7
SFO4:01 pmSan Francisco
36h 54m
2 stops
IAD7:55 amWashington, D.C. Dulles Intl
Jan 14
IAD6:00 amWashington, D.C. Dulles Intl
10h 24m
1 stop
SFO1:24 pmSan Francisco
$267
Find similar
Frontier
Jan 8
SFO11:20 pmSan Francisco
9h 08m
1 stop
IAD11:28 amWashington, D.C. Dulles Intl
Jan 11
IAD6:00 amWashington, D.C. Dulles Intl
10h 18m
1 stop
SFO1:18 pmSan Francisco
$268
Find similar
Frontier
Feb 14
SFO11:00 pmSan Francisco
8h 15m
1 stop
IAD10:15 amWashington, D.C. Dulles Intl
Feb 23
IAD11:41 amWashington, D.C. Dulles Intl
15h 47m
2 stops
SFO12:28 amSan Francisco
$273
Find similar

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

Our best United Airlines deals on San Francisco to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Jan 17
SFO9:20 pmSan Francisco
5h 12m
IAD5:32 amWashington, D.C. Dulles Intl
Jan 18
IAD8:25 amWashington, D.C. Dulles Intl
6h 18m
SFO11:43 amSan Francisco
$272
Find similar
United Airlines
Feb 18
SFO11:20 amSan Francisco
5h 07m
IAD7:27 pmWashington, D.C. Dulles Intl
Feb 22
IAD6:20 amWashington, D.C. Dulles Intl
6h 15m
SFO9:35 amSan Francisco
$277
Find similar
United Airlines
Jan 16
SFO11:20 pmSan Francisco
5h 15m
IAD7:35 amWashington, D.C. Dulles Intl
Jan 19
IAD10:20 pmWashington, D.C. Dulles Intl
6h 10m
SFO1:30 amSan Francisco
$297
Find similar

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 December 24, 2025.
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

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 2/5

6:18 pm-4:26 pm

1 stop19h 08m

Washington, D.C. Dulles Intl

Thu 2/12

6:20 pm-11:59 pm

1 stop8h 39m

$265

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 1/7

4:01 pm-7:55 am

2 stops36h 54m

Washington, D.C. Dulles Intl

Wed 1/14

6:00 am-1:24 pm

1 stop10h 24m

$267

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 1/8

11:20 pm-11:28 am

1 stop9h 08m

Washington, D.C. Dulles Intl

Sun 1/11

6:00 am-1:18 pm

1 stop10h 18m

$268

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 2/17

6:40 am-5:27 pm

1 stop7h 47m

Washington, D.C. Dulles Intl

Sun 2/22

11:43 am-9:39 pm

1 stop12h 56m

$270

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sat 1/17

9:20 pm-5:32 am

Nonstop5h 12m

Washington, D.C. Dulles Intl

Sun 1/18

8:25 am-11:43 am

Nonstop6h 18m

$272

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sat 2/14

11:00 pm-10:15 am

1 stop8h 15m

Washington, D.C. Dulles Intl

Mon 2/23

11:41 am-12:28 am

2 stops15h 47m

$273

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 1/20

6:00 am-4:31 pm

1 stop7h 31m

Washington, D.C. Dulles Intl

Tue 1/27

5:26 pm-11:12 pm

1 stop8h 46m

$276

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 2/18

11:20 am-7:27 pm

Nonstop5h 07m

Washington, D.C. Dulles Intl

Sun 2/22

6:20 am-9:35 am

Nonstop6h 15m

$277

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 1/7

7:00 am-8:56 pm

2 stops34h 56m

Washington, D.C. Dulles Intl

Wed 1/14

6:00 am-1:24 pm

1 stop10h 24m

$279

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sun 1/25

7:00 am-5:04 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Tue 1/27

6:04 pm-2:00 pm

1 stop22h 56m

$280

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, July 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 $397. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of July, then flying in October 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 $487. 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 $658.

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 $458 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $598 on average. Flights to Washington, D.C. Dulles Intl Airport from San Francisco at noon 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 $445 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 $366 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?

You could potentially save up to 7% on your flight if you consider stops on a San Francisco to Washington, D.C. Dulles Intl Airport flight.

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

As of December 2025, prices for San Francisco to Washington, D.C. Dulles Intl Airport flights are approximately 15% cheaper 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

$209

Fastest flight time

4h 53m

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 $209. 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 $497.
The fastest flight from San Francisco to Washington, D.C. Dulles Intl Airport takes 4h 53m
Direct flights go from San Francisco to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

  • 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 2410.3 mi. Flights usually cover this in 4h 53m, 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 $130Free CancellationRating
5.8
3,073 reviews
Search Frontier flights
American AirlinesPriceFrom $172Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
DeltaPriceFrom $208Free CancellationRating
7.9
8,015 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $251Free CancellationRating
7.8
2,820 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $255Free CancellationRating
8.0
11,520 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
9,111 reviews
Search United Airlines flights
SouthwestPriceFrom $286Free CancellationRating
8.0
4,255 reviews
Search Southwest 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 $273 round-trip. Over the 27 United Airlines flights for this route in a normal week, average airfare is usually $478 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
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Harpers Ferry
Gaithersburg
Reston
Manassas
Sterling
Fairfax

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.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

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