Chicago to Buffalo (ORD-BUF): nonstop upgrade & award space

American Airlines and United Airlines fly nonstop between Chicago (ORD) and Buffalo (BUF), roughly 78 times a week. With this many departures on a short sector, premium cabins are small and turn over daily, so upgrade or award space opens and closes within hours. 2LNR tracks confirmed upgrade and award space on American Airlines, on every ORD 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.

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78
Nonstop flights a week
472 mi
Nonstop distance
Free
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Chicago to Buffalo flight schedule

Scheduled nonstop departures for ORD 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 Chicago (ORD) to Buffalo (BUF)
Date Flight Airline Departs ORD Arrives BUF Duration Aircraft
UA 265United Airlines06:2909:081h 39m738
AA 4751American Airlines08:5511:481h 53mE75
UA 3634United Airlines10:2513:181h 53mE7W
UA 4534United Airlines10:2513:161h 51mCR5
UA 5478United Airlines10:2513:161h 51mCR5
UA 2226United Airlines14:0716:551h 48m738
AA 3013American Airlines14:3217:181h 46m319
UA 1335United Airlines18:1521:071h 52m319
AA 564American Airlines19:2022:101h 50m738
AA 4474American Airlines21:1000:021h 52mE75
UA 265United Airlines06:4909:281h 39m738
AA 4751American Airlines08:4611:391h 53mE75
UA 4534United Airlines10:2513:161h 51mCR5
UA 4614United Airlines10:2513:161h 51mCR5
UA 2226United Airlines14:0716:561h 49m738
AA 3013American Airlines14:3217:181h 46m319
UA 1335United Airlines18:1521:071h 52m319
AA 564American Airlines19:2022:101h 50m738
AA 4474American Airlines21:1000:021h 52mE75
UA 265United Airlines06:4909:281h 39m738
AA 4751American Airlines08:4611:391h 53mE75
UA 4534United Airlines10:2513:161h 51mCR5
UA 4614United Airlines10:2513:161h 51mCR5
UA 2226United Airlines14:0716:561h 49m738
AA 3013American Airlines14:3217:181h 46m319
UA 1335United Airlines18:1521:071h 52m738
AA 564American Airlines19:2022:101h 50m738
AA 4474American Airlines21:1000:021h 52mE75
UA 265United Airlines06:2909:081h 39m738
AA 4751American Airlines08:4611:391h 53mE75
UA 4534United Airlines10:2513:161h 51mCR5
UA 4614United Airlines10:2513:161h 51mCR5
AA 4913American Airlines13:2916:181h 49mCR7
UA 2226United Airlines14:0716:561h 49m738
AA 3013American Airlines14:3217:181h 46m319
UA 1335United Airlines18:1521:071h 52m738
AA 564American Airlines19:2022:101h 50m738
AA 4474American Airlines21:1000:021h 52mE75
AA 403American Airlines21:3200:151h 43m319
AA 4751American Airlines08:4611:391h 53mE75

Showing the first 40 of 67 scheduled ORD to BUF departures across the next 7 days with service. Every remaining date is 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 ORD to BUF date on the interactive map

Confirmed upgrade & award space on ORD to BUF departures

2LNR tracks confirmed upgrade and award space on American Airlines, segment by segment and date by date. Open the calendar for Chicago 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 ORD 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 ORD to BUF on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Chicago to Buffalo nonstop

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

See ORD to BUF on the interactive map →

Frequently asked questions about ORD to BUF

How far is Buffalo from Chicago?
ORD to BUF covers about 472 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 ORD to BUF?
American Airlines and United Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines.
How many flights a week are there from ORD to BUF?
About 78 nonstop flights a week run between Chicago and Buffalo in the current schedule, operated by American Airlines and United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from ORD to BUF depart?
Scheduled ORD to BUF nonstops in the next 7 days with service leave between 06:29 and 21:32, local time at Chicago. 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 ORD to BUF?
Open the ORD to BUF route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines, 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 ORD 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.

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