Earn point on your loyalty program!arrow arc left

Cheap flights from Chicago (CHI) to Buffalo (BUF)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Chicago (CHI) to Buffalo (BUF)

How to find the cheapest flight from Chicago (CHI) to Buffalo (BUF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Buffalo (BUF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Buffalo (BUF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Chicago to Buffalo in September , October 2026

29 Sep - 06 Oct $ 347.00
CHI
Chicago
United Airlines
DIRECT
BUF
Buffalo
BUF
Buffalo
United Airlines
DIRECT
CHI
Chicago
Pick dates
19 Sep - 09 Oct $ 388.00
CHI
Chicago
Frontier Airlines
1 STOPS
BUF
Buffalo
BUF
Buffalo
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
10 Sep - 14 Oct $ 451.00
CHI
Chicago
United Airlines
DIRECT
BUF
Buffalo
BUF
Buffalo
United Airlines
DIRECT
CHI
Chicago
Pick dates

Last minute flights from Chicago to Buffalo

19 Sep - 30 Sep $ 291.00
CHI
Chicago
Frontier Airlines
1 STOPS
BUF
Buffalo
BUF
Buffalo
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
30 Sep - 30 Sep $ 388.00
CHI
Chicago
United Airlines
DIRECT
BUF
Buffalo
BUF
Buffalo
United Airlines
DIRECT
CHI
Chicago
Pick dates
19 Sep - 30 Sep $ 557.00
CHI
Chicago
United Airlines
DIRECT
BUF
Buffalo
BUF
Buffalo
United Airlines
DIRECT
CHI
Chicago
Pick dates

One-way flights to Buffalo from Chicago

6:20 AM - 10:48 AM
Frontier Airlines
1 Stops
5h 35m
CHI - BUF
$ 127
Kiwi
Pick dates
6:20 AM - 10:43 AM
Frontier Airlines
1 Stops
5h 30m
CHI - BUF
$ 187
Kiwi
Pick dates
6:49 AM - 6:49 AM
United Airlines
0 Stops
1h 39m
CHI - BUF
$ 246
Kiwi
Pick dates

How to find the cheapest flight from Chicago (CHI) to Buffalo (BUF)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Buffalo (BUF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Buffalo (BUF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.