$127 Cheap American Airlines flights Buffalo (BUF) to Philadelphia (PHL)

Set the "Price (lowest to highest)" filter on Expedia to look for cheap American Airlines round-trip flights from $243 from BUF to PHL. Affordable one-way fares from $127 are also available.**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 get cheaper fares on American Airlines flights from Buffalo Niagara Intl. Airport (BUF) to Philadelphia Intl. Airport (PHL). 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 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.* Time it well, 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.

Departing BUF at 6:00AM UTC-5, the earliest American Airlines flight to PHL arrives at 7:24AM UTC-5. Flying early means you'll be less likely to encounter delays or cancellations.* Not an early riser? The last American Airlines flight from BUF to PHL departs at 3:22PM UTC-5 and touches down at 4:46PM 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.