✈️ Flight Guide: Washington, D.C. (BWI) → Buffalo (BUF)

Direct service on the BWI to BUF route is limited and varies by season; you can often find one-stop itineraries with American Airlines, Delta Air Lines and United Airlines. Low-cost carriers and regional partners sometimes offer seasonal or weekend nonstop flights — check carriers' schedules and aggregator sites for the latest Baltimore to Buffalo flight availability.

A nonstop flight between Baltimore/Washington International Thurgood Marshall Airport (BWI) and Buffalo Niagara International Airport (BUF) typically takes about 1 hour 20 minutes to 1 hour 35 minutes. If you choose a one-stop itinerary, total travel time commonly ranges from 3 to 6 hours depending on connection times and routing.

September is a shoulder season for travel between Baltimore and Buffalo, so you can often find lower fares compared to summer peak months. To secure cheap flights from BWI to BUF in September, search for midweek departures, set fare alerts, and book 2–6 weeks in advance; flexible dates and comparison across low-cost and legacy carriers will increase your chances of finding a deal.

For a domestic BWI departure to Buffalo, arrive at Baltimore/Washington International Thurgood Marshall Airport (BWI) at least 90 minutes before your scheduled departure if you have checked baggage or require standard security screening. If you’re traveling during a busy September holiday like Labor Day weekend or need to check bags, allow two hours to account for traffic, parking, or longer TSA lines.

Baltimore/Washington International Thurgood Marshall Airport (BWI) offers multiple ground transport options including MTA Light Rail, MARC train connections, Amtrak service to BWI, shuttle buses, rideshares, and on-site rental car facilities. Short- and long-term parking lots, economy lots serviced by shuttles, and airport hotels with park-and-fly packages make it easy whether you're traveling from Baltimore, Washington, D.C., Annapolis, or nearby suburbs.

Baggage policies vary by airline; most carriers allow a carry-on and a checked bag for a fee unless a fare includes checked luggage. Since September in Buffalo can bring cool mornings and layers, pack a light jacket and check airline rules for oversized sports equipment or winter gear ahead of time — contact your carrier for fees and packing tips prior to travel from Baltimore/Washington International Thurgood Marshall Airport (BWI).

From Buffalo Niagara International Airport (BUF), you can choose taxis, rideshare services such as Uber and Lyft, car rentals, or local NFTA bus connections into downtown Buffalo. Specialized shuttles and private transfer services run to Niagara Falls and nearby hotels; for trips to Toronto or Rochester, renting a car is often the most flexible option due to regional transit limits.

Buffalo in September generally brings mild, comfortable weather with daytime highs in the mid-60s to low 70s°F (18–23°C) and cooler evenings. Pack light layers, a compact rain jacket for unpredictable showers near Lake Erie and Niagara Falls, and comfortable footwear for sightseeing; early fall is perfect for outdoor activities and short hikes.

Direct service between Baltimore/Washington International Thurgood Marshall Airport (BWI) and Buffalo Niagara International Airport (BUF) is sometimes available depending on seasonal schedules and carrier decisions. If nonstop options are limited in September, one-stop itineraries through hubs like Charlotte, Philadelphia, or Detroit are common — check current schedules for confirmed Baltimore to Buffalo nonstop flights.

After arriving at Buffalo Niagara International Airport (BUF), head to Niagara Falls for world-class scenery, explore Canalside and the Buffalo waterfront, and enjoy Elmwood Village's dining and arts scene. For day trips, consider Rochester, Syracuse, or even a drive to Toronto if you plan for cross-border travel; these nearby major destinations expand sightseeing options beyond Buffalo.

Public transit options from Buffalo Niagara International Airport (BUF) to Niagara Falls include NFTA buses and seasonal shuttles, but schedules may be limited outside peak summer months. Travel to Toronto requires crossing an international border; direct public transit options are limited, so a rental car, shuttle service, or intercity bus with customs processing is usually more practical.

Buffalo Niagara International Airport (BUF) has streamlined domestic arrival procedures with ground transportation, car rental counters, and baggage claim services near the main terminal. September travel typically sees moderate passenger volumes after the summer peak, but check arrival times and allow extra time for luggage and ground transfers if traveling during holiday weekends or Buffalo Bills home game days.