$146 Cheap Delta flights Atlanta (ATL) to Buffalo (BUF)

Landing cheap one-way Delta Air Lines flights from ATL to BUF from $146 on Expedia is easy — just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares from $159 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.

Start searching one to three months ahead of your travel date to score cheap fares on Delta Air Lines flights from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Buffalo Niagara Intl. Airport (BUF). 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 the timing right, and you can enjoy significant savings on domestic trips.*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.

Taking off from ATL at 9:05AM UTC-5, the first Delta Air Lines flight to BUF arrives at 11:03AM UTC-5. Flying earlier in the day means you'll be less likely to encounter delays or cancellations.* After something later? The last Delta Air Lines flight from ATL to BUF departs at 9:59PM UTC-5 and touches down at 11:57PM UTC-5.*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.

Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is the leading choice for many travelers heading from ATL to BUF. Plus, 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 travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.