--- title: "Green Bay (GRB) to Buffalo (BUF) flights: who flies it" description: "American Airlines and Delta Air Lines fly nonstop from GRB to BUF, about 2 flights a week, covering 482 miles. Upgrade and award space by date on 2LNR, next 14 days free." canonical: "https://2lnr.com/routes/grb-buf" url: "https://2lnr.com/routes/grb-buf.md" date_modified: "2026-10-18T05:10:47Z" --- # 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. The timetable below shows the nonstop scheduled at 1h 45m to 1h 51m for the 482 miles. 2LNR checks confirmed upgrade and award space on American Airlines and Delta Air Lines flights on this route, so you can see which departures have space before you book. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See GRB to BUF on the interactive map [Get started free](https://2lnr.com/login) 2 Flights a week, 4-week average 1h 45m to 1h 51m Scheduled flight time 482 mi Nonstop distance Free To get started ## Green Bay to Buffalo flight schedule Scheduled nonstop departures for GRB to BUF starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Green Bay (GRB) to Buffalo (BUF) | Date | Flight | Airline | Departs GRB | Arrives BUF | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Mon, Dec 14 | AA 3955 | American Airlines | 09:25 | 12:16 | 1h 51m | [Embraer E175](https://2lnr.com/seatmaps/aa/e175.md) | | Mon, Dec 14 | DL 8783 | Delta Air Lines | 10:22 | 13:07 | 1h 45m | [Boeing 717-200](https://2lnr.com/seatmaps/dl/717-200.md) | Showing all 2 scheduled GRB to BUF departures across 1 day with service, starting October 22, 2026. 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 hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every GRB to BUF date on the interactive map ## Aircraft on the Green Bay to Buffalo nonstop In the schedule table on this page, American Airlines flies the [Embraer E175](https://2lnr.com/seatmaps/aa/e175.md), and Delta Air Lines flies the [Boeing 717-200](https://2lnr.com/seatmaps/dl/717-200.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## 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 or award seats by date on the GRB to BUF departures 2LNR tracks, checked against live inventory so you know what's open before you book. ### Set an alert Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're 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. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date. - [American Airlines (AA) route map](https://2lnr.com/routes/airlines/aa.md)\ [The aircraft AA flies](https://2lnr.com/seatmaps/aa.md) - [Delta Air Lines (DL) route map](https://2lnr.com/routes/airlines/dl.md)\ [The aircraft DL flies](https://2lnr.com/seatmaps/dl.md) See GRB to BUF on the interactive map → ## Frequently asked questions about GRB to BUF **How long is the flight from Green Bay (GRB) to Buffalo (BUF)?** Scheduled flight times from Green Bay (GRB) to Buffalo (BUF) run from 1h 45m to 1h 51m across the departures in the schedule table on this page. The nonstop covers about 482 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from GRB to BUF?** American Airlines and Delta Air Lines fly GRB to BUF nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines and Delta Air Lines. **How often does GRB to BUF operate?** The GRB to BUF nonstop currently runs twice a week. Thin schedules like this change by season, and on Pro an alert will catch anything added. **What time do flights from GRB to BUF depart?** Scheduled GRB to BUF nonstops on the next day with service leave between 09:25 and 10:22, local time at Green Bay. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate GRB to BUF nonstop?** In the schedule table on this page, GRB to BUF nonstops fly as AA 3955 on American Airlines and DL 8783 on Delta Air Lines. The table lists each departure by date with its times 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. Flying the other way? See [BUF to GRB upgrade and award space](https://2lnr.com/routes/buf-grb.md). Award seats rather than schedules? See [American Airlines award availability](https://2lnr.com/awards/aa.md) or [Delta Air Lines award availability](https://2lnr.com/awards/dl.md). Looking beyond this route? See [every route from Green Bay (GRB)](https://2lnr.com/routes/grb.md), or [every route from Buffalo (BUF)](https://2lnr.com/routes/buf.md). - [How American upgrades clear](https://2lnr.com/about/aa/upgrades.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## Never miss GRB to BUF upgrade or award space See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)