Nonstop flights from Chicago to Buffalo

3 airlines fly from 2 Chicago airports (ORD and MDW) to Buffalo (BUF), with up to 10 flights a day.

ORDBUF

Routes

2 airport pairs

When they leave

Chicago time

6:49a9:10pFirst departure 6:49 AM, last 9:10 PM

Four in the morning, 6:49 AM to 10:25 AM, then five in the afternoon, 12:45 PM to 3:15 PM, then five in the evening, 6:00 PM to 9:10 PM.

Every flight

Earliest first

6:49 AM→9:28 AMORD to BUFUnited AirlinesBoeing 737Mon, Wed, Thu, Fri, Sun
6:50 AM→9:39 AMORD to BUFAmerican AirlinesEmbraer 175Mon, Tue, Wed, Thu, Fri, Sun
8:05 AM→10:45 AMMDW to BUFSouthwest AirlinesBoeing 737 MAX 8Daily
10:25 AM→1:16 PMORD to BUFUnited AirlinesCRJ 700Mon, Wed, Thu, Fri, Sun
12:45 PM→3:15 PMMDW to BUFSouthwest AirlinesBoeing 737 MAX 8Mon, Tue, Wed, Thu, Fri
1:55 PM→4:25 PMMDW to BUFSouthwest AirlinesBoeing 737-700Sun
2:07 PM→4:56 PMORD to BUFUnited AirlinesBoeing 737Mon, Wed, Thu, Fri, Sun
2:19 PM→5:04 PMORD to BUFAmerican AirlinesAirbus A319Mon, Tue, Wed, Thu, Fri, Sun
3:15 PM→5:40 PMMDW to BUFSouthwest AirlinesBoeing 737-700Sat
6:00 PM→8:35 PMMDW to BUFSouthwest AirlinesBoeing 737Tue, Wed
6:05 PM→8:40 PMMDW to BUFSouthwest AirlinesBoeing 737-700Sun
6:15 PM→9:07 PMORD to BUFUnited AirlinesAirbus A319Mon, Wed, Thu, Fri, Sun
6:20 PM→8:50 PMMDW to BUFSouthwest AirlinesBoeing 737-700Mon, Thu, Fri
9:10 PM→12:02 AM⁺¹ORD to BUFAmerican AirlinesEmbraer 175Mon, Tue, Wed, Thu, Fri, Sun

Schedules last checked Sep 21, 2026. Times are local.

Flying from Chicago to Buffalo

Southwest Airlines flies 2 to 3 times a day on the Boeing 737-700, Boeing 737 MAX 8 and Boeing 737. United Airlines flies 20 times a week on the Boeing 737, Airbus A319 and CRJ 700. American Airlines flies 18 times a week on the Embraer 175 and Airbus A319.

Flights run every day of the week, from 2 on Saturdays to 10 on Mondays, Wednesdays, Thursdays, Fridays and Sundays. The first arrival in Buffalo is at 9:28 AM and the last at 12:02 AM the next day.

ORD to BUF is the busiest airport pair, with 38 flights a week, then MDW to BUF with 20.

Flying back, Buffalo to Chicago has 69 nonstop flights a week.

Return flights

Buffalo to ChicagoView

Find the cheapest day to fly from Chicago to Buffalo.

Schedules as of Oct 9, 2026.