$221 Cheap United flights Greensboro (GSO) to Denver (DEN)

Grab affordable return United Airlines flights from $249 from GSO to DEN by filtering your results from "Price (lowest to highest)" on Expedia. Or search for bargains from $221 for a one-way trip.**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 ahead of your travel date to get cheap fares on United Airlines flights from Piedmont Triad Intl. Airport (GSO) to Denver Intl. Airport (DEN). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to 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 your timing spot on, and you can enjoy significant savings on domestic journeys.*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.

Setting off from GSO at 8:25AM UTC-5, the first United Airlines flight to DEN arrives at 10:29AM UTC-7. Traveling early means you'll be less likely to encounter delays or cancellations.* Not a morning person? The last United Airlines flight from GSO to DEN departs at 8:25AM UTC-5 and touches down at 10:29AM UTC-7.*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.

With a rewarding loyalty program, United Airlines is a top pick for many travelers flying from GSO to DEN. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you could 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.