Cheap flights from Chicago to Niagara Falls

  • Plan, book, fly with confidence
  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 35% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Chicago (CHI) to Niagara Falls (BUF)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$509 Return, found 1 day ago
NZ$509
Return
found 1 day ago
Select American Airlines flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$509 found 1 day ago
American Airlines
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$525 Return, found 1 day ago
NZ$525
Return
found 1 day ago
Select American Airlines flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$525 found 1 day ago
American Airlines
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$526 Return, found 1 day ago
NZ$526
Return
found 1 day ago
Select American Airlines flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$526 found 1 day ago
American Airlines
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$539 Return, found 1 day ago
NZ$539
Return
found 1 day ago
Select American Airlines flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$539 found 1 day ago
Delta
Sat., 4 Jan. - Sat., 11 Jan.
MDW
Chicago
BUF
Buffalo
NZ$542 Return, found 1 day ago
NZ$542
Return
found 1 day ago
Select Delta flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$542 found 1 day ago
Delta
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$542 Return, found 1 day ago
NZ$542
Return
found 1 day ago
Select Delta flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$542 found 1 day ago
American Airlines
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$543 Return, found 1 day ago
NZ$543
Return
found 1 day ago
Select American Airlines flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$543 found 1 day ago
American Airlines
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$556 Return, found 1 day ago
NZ$556
Return
found 1 day ago
Select American Airlines flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$556 found 1 day ago
American Airlines
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$559 Return, found 1 day ago
NZ$559
Return
found 1 day ago
Select American Airlines flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$559 found 1 day ago
Delta
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$564 Return, found 1 day ago
NZ$564
Return
found 1 day ago
Select Delta flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$564 found 1 day ago
Delta
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$589 Return, found 1 day ago
NZ$589
Return
found 1 day ago
Select Delta flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$589 found 1 day ago
Delta
Sat., 4 Jan. - Sat., 11 Jan.
ORD
Chicago
BUF
Buffalo
NZ$598 Return, found 1 day ago
NZ$598
Return
found 1 day ago
Select Delta flight, departing Sat., 4 Jan. from Chicago to Buffalo, returning Sat., 11 Jan., priced at NZ$598 found 1 day ago
Beautiful view of the beach with palm trees

Black Friday: Members save 30%+

Members save 30%+ on selected hotels until 4 Dec (property time) with our Black Friday deals. Stay by 15 Dec 2025.
Unlock Black Friday deals
*Available to Expedia members.