Cheap Alaska Airlines flights San Luis Obispo (SBP) to Washington (IAD)

Grab budget-friendly return Alaska Airlines flights from $332 from SBP to IAD by filtering your results from “Price (lowest to highest)” on Expedia. Or search for options for a one-way journey.**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.

Browse for return or one-way flights to Washington in January or February. You could find an affordable fare with Alaska Airlines during these off-peak travel months.

To find cheap Alaska Airlines fares from San Luis Obispo County Regional Airport (SBP) to Washington Dulles Intl. Airport (IAD), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the price you pay. Sunday is typically the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**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.

Select our “Nonstop” filter when looking for direct Alaska Airlines flights from SBP to IAD. It’s also a great way to compare other airlines servicing the same direct route.

Sort your results by “Morning” and “Early Morning” to browse the earliest departures from SBP to IAD. Taking off early means you’re 20% less likely to experience cancellations.**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.

Washington Dulles Intl. Airport (IAD) is the primary Washington hub for Alaska Airlines flights from San Luis Obispo County Regional Airport (SBP).

Offering an excellent in-flight experience and top-tier customer service, Alaska Airlines is the leading choice for many travelers heading from SBP to IAD. Also, if you’re a Mileage Plan and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are usually free within 24 hours of making a booking, but your airline may add a charge after that. For more information about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to change your itinerary without extra charges, tick the “Changes included” and “No cancel fee” filters when planning your next break.