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

United Airlines and American Airlines fly nonstop between Buffalo (BUF) and Chicago (ORD), roughly 58 times a week. The timetable below shows the nonstop scheduled at 1h 54m to 2h 10m for the 472 miles. 2LNR checks confirmed upgrade and award space on American Airlines flights on this route, so you can see which departures have space before you book.

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

Updated .

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58
Flights a week, 4-week average
1h 54m to 2h 10m
Scheduled flight time
472 mi
Nonstop distance
Free
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Buffalo to Chicago flight schedule

Scheduled nonstop departures for BUF to ORD 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.

Schedule data dated .

Scheduled nonstop departures from Buffalo (BUF) to Chicago (ORD)
Date Flight Airline Departs BUF Arrives ORD Duration Aircraft
UA 543United Airlines07:0008:002hAirbus A320
AA 1195American Airlines08:0009:052h 5mBoeing 737-800
UA 1651United Airlines10:4611:451h 59mAirbus A320
AA 4780American Airlines11:2412:292h 5mEmbraer E175
AA 3410American Airlines11:4612:401h 54mEmbraer E175
UA 4741United Airlines13:4814:502h 2mCR5
UA 2747United Airlines17:4518:472h 2mBoeing 737-700
AA 2921American Airlines17:5019:002h 10mAirbus A319
UA 543United Airlines07:0008:002hAirbus A320
AA 1195American Airlines08:0009:052h 5mBoeing 737-800
UA 1651United Airlines10:4611:451h 59mAirbus A320
AA 4780American Airlines11:2412:292h 5mEmbraer E175
AA 3410American Airlines11:4612:401h 54mEmbraer E175
UA 4741United Airlines13:4814:502h 2mCR5
UA 2747United Airlines17:4518:472h 2mBoeing 737-700
AA 2921American Airlines17:5019:002h 10mAirbus A319
UA 543United Airlines07:0008:002hAirbus A320
AA 1195American Airlines08:0009:052h 5mBoeing 737-800
UA 1651United Airlines10:4611:451h 59mAirbus A320
AA 4780American Airlines11:2412:292h 5mEmbraer E175
AA 3664American Airlines11:2612:292h 3mEmbraer E175
AA 3410American Airlines11:4612:401h 54mEmbraer E175
UA 4741United Airlines13:4814:502h 2mCR5
UA 2747United Airlines17:4518:472h 2mBoeing 737-700
AA 2921American Airlines17:5019:002h 10mAirbus A319
UA 543United Airlines07:0008:002hAirbus A320
AA 1195American Airlines08:0009:052h 5mBoeing 737-800
UA 4619United Airlines10:3211:271h 55mCR5
AA 4780American Airlines11:2412:292h 5mEmbraer E175
AA 3664American Airlines11:2612:292h 3mEmbraer E175
AA 3410American Airlines11:4612:401h 54mEmbraer E175
UA 4381United Airlines13:5314:552h 2mCR5
UA 2747United Airlines17:4518:472h 2mBoeing 737-700
AA 2921American Airlines17:4918:592h 10mAirbus A319
UA 543United Airlines06:3007:332h 3mBoeing 737-700
AA 1195American Airlines08:0009:052h 5mBoeing 737-800
UA 4619United Airlines10:3211:271h 55mCR5
AA 4780American Airlines11:2412:292h 5mEmbraer E175
AA 3664American Airlines11:2612:292h 3mEmbraer E175
AA 3410American Airlines11:4612:401h 54mEmbraer E175

Showing the first 40 of 61 scheduled BUF to ORD departures across 7 days with service, starting October 22, 2026. 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 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 BUF to ORD date on the interactive map

Aircraft on the Buffalo to Chicago nonstop

In the schedule table on this page, American Airlines flies the Embraer E175, the Boeing 737-800, and the Airbus A319, and United Airlines flies the Airbus A320, the Bombardier CRJ, and the Boeing 737-700. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Confirmed upgrade & award space on BUF to ORD departures

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

American Airlines award space was open on 11 of the 14 Buffalo to Chicago departure dates from October 19 to November 1 that 2LNR checked in the 7 days to October 19, 2026.

See real availability

Confirmed upgrade or award seats by date on the BUF to ORD 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 BUF to ORD on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Buffalo to Chicago nonstop

Carriers operating BUF to ORD nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date.

See BUF to ORD on the interactive map →

Frequently asked questions about BUF to ORD

How long is the flight from Buffalo (BUF) to Chicago (ORD)?
Scheduled flight times from Buffalo (BUF) to Chicago (ORD) run from 1h 54m to 2h 10m across the departures in the schedule table on this page. The nonstop covers about 472 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from BUF to ORD?
United Airlines and American Airlines fly BUF to ORD nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines.
How many flights a week are there from BUF to ORD?
About 58 nonstop flights a week run between Buffalo (BUF) and Chicago (ORD) in the current schedule, operated by United Airlines and American Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from BUF to ORD depart?
Scheduled BUF to ORD nonstops in the next 7 days with service leave between 06:30 and 17:50, local time at Buffalo. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate BUF to ORD nonstop?
The schedule table on this page lists 11 flight numbers for BUF to ORD nonstops, including AA 1195, AA 2921, AA 3410, and AA 4780 on American Airlines, and UA 543, UA 1651, UA 2747, and UA 4741 on United Airlines. The table lists each departure by date with its times and aircraft.
How do I check upgrade or award availability on BUF to ORD?
Open the BUF to ORD 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 BUF to ORD 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.

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