Cheap Alaska Airlines flights Washington (IAD) to San Francisco (SFO)

Finding cheap one-way Alaska Airlines flights from IAD to SFO on Expedia is easy — just filter by “Price (lowest to highest).” Or check out our affordable return fares for your next break.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines flights to San Francisco are often cheaper in the quieter months of February and April. Whether you’re searching for a one-way or round-trip ticket, you could score a better deal then.

Begin your search one to three months before your departure to find cheap fares on Alaska Airlines flights from Washington Dulles Intl. Airport (IAD) to San Francisco Intl. Airport (SFO). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic flights.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Use the “Nonstop” filter when looking for direct Alaska Airlines flights from IAD to SFO. It’s also an easy way to compare other airlines servicing the same nonstop trip.

Browse Alaska Airlines’s earliest flights from IAD to SFO by using the “Morning” and “Early Morning” filters. Not only will you arrive at your destination sooner, early departures are also 20% less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Jump on an Alaska Airlines flight from Washington Dulles Intl. Airport (IAD) to San Francisco, and you’ll likely come in to San Francisco Intl. Airport (SFO). This is the airline’s main hub in this destination.

With a rewarding loyalty program and top-tier customer service, Alaska Airlines is a popular option for many passengers heading from IAD to SFO. Also, if you’re a Mileage Plan and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which you can put toward future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are generally free within 24 hours of making a booking, but your airline may charge you after that. For more information about altering your reservation, check out your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to update your itinerary without additional costs, check the “Changes included” or “No cancel fee” filter when organizing your next escape.