Green Bay to Buffalo (GRB-BUF): nonstop upgrade & award space

American Airlines and Delta Air Lines fly nonstop from Green Bay (GRB) to Buffalo (BUF) just twice a week. With so few departures, each one carries the only premium seats on the route that day. 2LNR tracks confirmed upgrade and award space on American Airlines and Delta Air Lines, on every GRB to BUF departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

See GRB to BUF on the interactive map Get started free
2
Nonstop flights a week
482 mi
Nonstop distance
Free
To get started

Green Bay to Buffalo flight schedule

Scheduled nonstop departures for GRB to BUF, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Green Bay (GRB) to Buffalo (BUF)
Date Flight Airline Departs GRB Arrives BUF Duration Aircraft
AA 3955American Airlines09:4512:251h 40mE75
DL 4539Delta Air Lines11:0013:451h 45mCR9

Showing all 2 scheduled GRB to BUF departures across the next 1 day with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every GRB to BUF date on the interactive map

Confirmed upgrade & award space on GRB to BUF departures

2LNR tracks confirmed upgrade and award space on American Airlines and Delta Air Lines, segment by segment and date by date. Open the calendar for Green Bay to Buffalo to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each GRB to BUF departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See GRB to BUF on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Green Bay to Buffalo nonstop

Carriers operating GRB to BUF nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See GRB to BUF on the interactive map →

Frequently asked questions about GRB to BUF

How far is Buffalo from Green Bay?
GRB to BUF covers about 482 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from GRB to BUF?
American Airlines and Delta Air Lines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines and Delta Air Lines.
How often does GRB to BUF operate?
The nonstop currently runs twice a week. Thin schedules like this change by season, and an alert will catch anything added.
What time do flights from GRB to BUF depart?
Scheduled GRB to BUF nonstops in the next 1 days with service leave between 09:45 and 11:00, local time at Green Bay. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on GRB to BUF?
Open the GRB to BUF route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines and Delta Air Lines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss GRB to BUF upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

Get started free