£162 Cheap Flights from Washington (IAD) to San Francisco (SFO)

View £162 flight on Wed, 3 Jun 2026Opens in a new window

Flight 1

Popular airlines from Washington Dulles International Airport (IAD) to San Francisco International Airport (SFO)

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Cheap Flights from Washington (IAD) to San Francisco (SFO)

Prices were available within the past 7 days and start at £162 for one-way flights and £323 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 3 Jun - Sat, 6 Jun
IAD
Washington
SFO
San Francisco
£323 Return, found 4 hours ago
£323
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 3 Jun from Washington to San Francisco, returning Sat, 6 Jun, priced at £323 found 4 hours ago
Alaska Airlines
Wed, 3 Jun - Sat, 6 Jun
IAD
Washington
SFO
San Francisco
£337 Return, found 1 day ago
£337
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 3 Jun from Washington to San Francisco, returning Sat, 6 Jun, priced at £337 found 1 day ago
Alaska Airlines
Wed, 3 Jun - Sat, 6 Jun
IAD
Washington
SFO
San Francisco
£338 Return, found 4 hours ago
£338
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 3 Jun from Washington to San Francisco, returning Sat, 6 Jun, priced at £338 found 4 hours ago
Alaska Airlines
Wed, 3 Jun - Sat, 6 Jun
IAD
Washington
SFO
San Francisco
£352 Return, found 1 day ago
£352
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 3 Jun from Washington to San Francisco, returning Sat, 6 Jun, priced at £352 found 1 day ago
Alaska Airlines
Thu, 28 May - Wed, 3 Jun
IAD
Washington
SFO
San Francisco
£355 Return, found 5 days ago
£355
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 28 May from Washington to San Francisco, returning Wed, 3 Jun, priced at £355 found 5 days ago
Alaska Airlines
Wed, 3 Jun - Sat, 6 Jun
IAD
Washington
SFO
San Francisco
£360 Return, found 4 hours ago
£360
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 3 Jun from Washington to San Francisco, returning Sat, 6 Jun, priced at £360 found 4 hours ago
Alaska Airlines
Thu, 28 May - Wed, 3 Jun
IAD
Washington
SFO
San Francisco
£366 Return, found 5 days ago
£366
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 28 May from Washington to San Francisco, returning Wed, 3 Jun, priced at £366 found 5 days ago
Delta
Wed, 20 May - Fri, 29 May
IAD
Washington
SFO
San Francisco
£367 Return, found 2 days ago
£367
Return
found 2 days ago
Select Delta flight, departing Wed, 20 May from Washington to San Francisco, returning Fri, 29 May, priced at £367 found 2 days ago
American Airlines
Sat, 23 May - Sun, 31 May
IAD
Washington
SFO
San Francisco
£375 Return, found 2 days ago
£375
Return
found 2 days ago
Select American Airlines flight, departing Sat, 23 May from Washington to San Francisco, returning Sun, 31 May, priced at £375 found 2 days ago
United
Sat, 23 May - Sun, 31 May
IAD
Washington
SFO
San Francisco
£449 Return, found 2 days ago
£449
Return
found 2 days ago
Select United flight, departing Sat, 23 May from Washington to San Francisco, returning Sun, 31 May, priced at £449 found 2 days ago

Alternative airports near San Francisco

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Francisco Intl. SFO. Cheapest and Closest option available. Average driving time to city centre is 19 minutes. Flights from £447
SFO
San Francisco Intl.
CheapestClosest
Average driving time to city centre19 min
Flights from £447

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) cost?
One-way flights typically cost between £401 and £1,797 and return flights often range between £604 and £1,834. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
January is typically the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.), with average return fares of approximately £524. This is about 15% lower than the average price throughout the year. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. Other cheap months to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) include February and October.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Enter IAD to SFO and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) will differ from traveller to traveller. If you like to fly early, UA offers early morning flights. If price is the most important factor, UA typically offers the lowest fares. UA offers the most daily flights from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.), which is brilliant if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
When planning your trip from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.), you'll find that January and February are typically the cheapest months to fly, with average return fares around £524. However, if you're looking for the most popular times with plenty of flight options, May and August see higher demand. Since there isn't a single month that is both cheapest and most popular, you can choose based on your priorities: save money in early winter, or enjoy more flight flexibility during the busier spring and summer months.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
When flying from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.), you'll find approximately 9 nonstop flights per day. For even more choice, look at flights that include layovers, as there are around 133 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN), and Hartsfield-Jackson Atlanta Intl. (ATL).
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) typically departs at approximately 5:00 AM local time. This service is operated by American Airlines and is seasonal, active in February and March. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
You'll typically find the most flights from Washington Dulles Intl. (IAD) to San Francisco Intl. (SFO) on a Friday, with around 53 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, Delta Air Lines, and American Airlines. Friday sees notably more flight options compared to other days of the week.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The most popular departure times for flights from Washington Dulles Intl. (IAD) to San Francisco Intl. (SFO) are in the early morning, from 6am to 9am. Approximately 38% of passengers prefer this time window. Many major carriers, including United Airlines, Delta Air Lines and American Airlines, offer flights during this window. This timing works well because you can get an early start to your travel day and arrive in San Francisco with plenty of time to settle in.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Direct flights from IAD to SFO usually take about 6 hours, traveling roughly 2,414 miles. If you opt for a connecting flight, expect to add around 6 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Select the "Business class" and "First class" filters when looking for IAD to SFO flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Francisco from Washington Dulles Intl. (IAD)?
From Washington Dulles Intl. (IAD), you can fly directly into San Francisco Intl. (SFO) to reach San Francisco. Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Charlotte-Douglas Intl. (CLT), San Diego Intl. (SAN) before reaching San Francisco. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines
Return price
£323
Distance
3862 km
Average flight time
3 hours 1 min

Book with confidence

Compare flights from Washington to San Francisco easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Washington to San Francisco. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to San Francisco Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Washington Dulles Intl. to San Francisco Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Washington Dulles Intl. (IAD) to San Francisco Intl. (SFO)

The easiest way to view the best deals on flights from Washington to San Francisco today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Washington Dulles Intl. to San Francisco Intl. start at just £323 and range up to £449.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Washington and San Francisco
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Washington to San Francisco flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to San Francisco Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Washington to San Francisco easily and book with confidence

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*Available to Expedia members.