$269 Cheap United flights Sacramento (SMF) to Washington (IAD)

Landing cheap one-way United Airlines flights from SMF to IAD from $269 on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $289 for your next exciting getaway.**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.

Search for return or one-way flights to Washington in January or February. You could find an affordable fare with United Airlines during these quieter months.

Search for affordable United Airlines flights from Sacramento Intl. Airport (SMF) to Washington Dulles Intl. Airport (IAD) one to three months prior to your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the best day to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

You can easily fly from Sacramento Intl. Airport (SMF) to Washington Dulles Intl. Airport (IAD) on any of United Airlines’s 7 weekly direct flights. Use Expedia’s “Nonstop” and “Airline” filters to find the United Airlines flight that’ll get you to IAD at your preferred time.

It takes around 5h to fly nonstop from Sacramento Intl. Airport (SMF) to Washington Dulles Intl. Airport (IAD) with United Airlines.

The first flight from SMF to IAD with United Airlines departs at 8:00AM UTC-8. You’ll land at 4:00PM UTC-5. The final United Airlines flight of the day leaves at 8:00AM UTC-8 and arrives at 4:00PM UTC-5. With around 20% fewer cancellations for early and mid-morning departures, setting off early is typically the best option.**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.

Board a United Airlines flight from Sacramento Intl. Airport (SMF) to Washington, and you’ll most likely come in to Washington Dulles Intl. Airport (IAD). This is the airline’s main hub in this city.

Offering a rewarding loyalty program, United Airlines is a favorite of many travelers heading from SMF to IAD. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely board a Boeing 737 MAX 8 or an Airbus A320 when flying United Airlines from Sacramento Intl. Airport (SMF) to Washington Dulles Intl. Airport (IAD). However, keep in mind that a different aircraft could be assigned to your route depending on operational requirements.

Changes are typically free within 24 hours of booking, but your airline may charge a fee after that time. For further information about modifying your reservation, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to update your itinerary without being charged, apply the “No cancel fee” or “Changes included” filter when organizing your next getaway.