$124 Cheap United flights Washington (IAD) to Greensboro (GSO)

Finding cheap one-way United Airlines flights from IAD to GSO from $124 on Expedia is simple — just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares from $184 for your next exciting adventure.**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.

Begin your search one to three months before your departure to get cheap fares on United Airlines flights from Washington Dulles Intl. Airport (IAD) to Piedmont Triad Intl. Airport (GSO). 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 cut 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 your timing spot on, 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.

The first flight from IAD to GSO with United Airlines leaves at 12:47PM UTC-5. You'll touch down at 2:05PM UTC-5. The last United Airlines flight of the day leaves at 5:10PM UTC-5 and arrives at 6:31PM UTC-5. With approximately 20% fewer cancellations for morning and mid-morning flights, heading out early is often the best way to go.**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.

Fly from IAD to GSO with United Airlines and you can look forward to a range of perks including a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you can also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.