$119 Cheap Delta flights Raleigh (RDU) to Washington (IAD)

Finding cheap one-way Delta Air Lines flights from RDU to IAD from $119 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $229 for your next 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 cheaper fares with Delta Air Lines during these off-peak months.

To find cheap Delta Air Lines fares from Raleigh - Durham Intl. Airport (RDU) 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 how much you pay. Sunday tends to be 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.

To figure out if there’s a direct route from RDU to IAD with Delta Air Lines or any other carriers, select the “Nonstop” filter when searching for tickets.

Search Delta Air Lines’s earliest flights from RDU to IAD by checking the “Early Morning” and “Morning” filters. Not only will you arrive sooner, early departures also experience 20% fewer 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.

Delta Air Lines flights from Raleigh - Durham Intl. Airport (RDU) to Washington touch down at Washington Dulles Intl. Airport (IAD). This is the main gateway here.

Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a popular option for many passengers heading from RDU to IAD. Also, if you’re a Delta SkyMiles 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.

Depending on the type of fare you purchased, a fee generally applies if you modify or cancel your booking more than 24 hours after it has been confirmed. To find flexible fares, select our “Changes included” or “No cancel fee” filter while looking for flights. For more details on canceling or modifying your reservation, go to “Trips,” select your flight and tick “Manage Booking.”