Flights from Chicago to Williamsville

Cheapest flights from Chicago

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 4 - Tue, Aug 5

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$177 Roundtrip, found 5 days ago

$177

Roundtrip

found 5 days ago

Select Delta flight, departing Mon, Aug 4 from O'Hare Intl. to Buffalo Niagara Intl., returning Tue, Aug 5, priced at $177 found 5 days ago

Sat, Aug 16 - Wed, Sep 3

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$177 Roundtrip, found 1 day ago

$177

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Aug 16 from O'Hare Intl. to Buffalo Niagara Intl., returning Wed, Sep 3, priced at $177 found 1 day ago

Mon, Aug 4 - Wed, Aug 6

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$178 Roundtrip, found 5 days ago

$178

Roundtrip

found 5 days ago

Select American Airlines flight, departing Mon, Aug 4 from O'Hare Intl. to Buffalo Niagara Intl., returning Wed, Aug 6, priced at $178 found 5 days ago

Mon, Aug 4 - Thu, Aug 7

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$179 Roundtrip, found 5 days ago

$179

Roundtrip

found 5 days ago

Select United flight, departing Mon, Aug 4 from O'Hare Intl. to Buffalo Niagara Intl., returning Thu, Aug 7, priced at $179 found 5 days ago

Fri, Aug 22 - Mon, Aug 25

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$188 Roundtrip, found 2 days ago

$188

Roundtrip

found 2 days ago

Select United flight, departing Fri, Aug 22 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 25, priced at $188 found 2 days ago

Tue, Aug 19 - Mon, Sep 1

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$197 Roundtrip, found 1 day ago

$197

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Aug 19 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Sep 1, priced at $197 found 1 day ago

Fri, Aug 1 - Mon, Aug 4

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$197 Roundtrip, found 5 days ago

$197

Roundtrip

found 5 days ago

Select United flight, departing Fri, Aug 1 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 4, priced at $197 found 5 days ago

Fri, Aug 22 - Mon, Aug 25

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$198 Roundtrip, found 2 days ago

$198

Roundtrip

found 2 days ago

Select Delta flight, departing Fri, Aug 22 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 25, priced at $198 found 2 days ago

Sat, Aug 2 - Tue, Aug 5

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$203 Roundtrip, found 5 days ago

$203

Roundtrip

found 5 days ago

Select Delta flight, departing Sat, Aug 2 from O'Hare Intl. to Buffalo Niagara Intl., returning Tue, Aug 5, priced at $203 found 5 days ago

Wed, Sep 3 - Mon, Sep 15

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$205 Roundtrip, found 3 days ago

$205

Roundtrip

found 3 days ago

Select JetBlue Airways flight, departing Wed, Sep 3 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Sep 15, priced at $205 found 3 days ago

Thu, Sep 4 - Mon, Sep 15

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$207 Roundtrip, found 1 day ago

$207

Roundtrip

found 1 day ago

Select JetBlue Airways flight, departing Thu, Sep 4 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Sep 15, priced at $207 found 1 day ago

Fri, Aug 1 - Mon, Aug 4

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$207 Roundtrip, found 5 days ago

$207

Roundtrip

found 5 days ago

Select Delta flight, departing Fri, Aug 1 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 4, priced at $207 found 5 days ago

Sat, Aug 2 - Thu, Aug 21

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$213 Roundtrip, found 3 days ago

$213

Roundtrip

found 3 days ago

Select Delta flight, departing Sat, Aug 2 from O'Hare Intl. to Buffalo Niagara Intl., returning Thu, Aug 21, priced at $213 found 3 days ago

Fri, Aug 1 - Mon, Aug 4

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$214 Roundtrip, found 5 days ago

$214

Roundtrip

found 5 days ago

Select United flight, departing Fri, Aug 1 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 4, priced at $214 found 5 days ago

Fri, Aug 1 - Mon, Aug 4

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$215 Roundtrip, found 5 days ago

$215

Roundtrip

found 5 days ago

Select United flight, departing Fri, Aug 1 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 4, priced at $215 found 5 days ago

Sun, Aug 17 - Thu, Sep 4

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$217 Roundtrip, found 1 day ago

$217

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sun, Aug 17 from O'Hare Intl. to Buffalo Niagara Intl., returning Thu, Sep 4, priced at $217 found 1 day ago

Fri, Aug 22 - Mon, Aug 25

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$218 Roundtrip, found 2 days ago

$218

Roundtrip

found 2 days ago

Select American Airlines flight, departing Fri, Aug 22 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 25, priced at $218 found 2 days ago

Tue, Aug 26 - Mon, Sep 8

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$220 Roundtrip, found 1 day ago

$220

Roundtrip

found 1 day ago

Select JetBlue Airways flight, departing Tue, Aug 26 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Sep 8, priced at $220 found 1 day ago

Sat, Aug 2 - Wed, Aug 6

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$223 Roundtrip, found 5 days ago

$223

Roundtrip

found 5 days ago

Select American Airlines flight, departing Sat, Aug 2 from O'Hare Intl. to Buffalo Niagara Intl., returning Wed, Aug 6, priced at $223 found 5 days ago

Tue, Jul 22 - Wed, Jul 23

ORD

O'Hare Intl.

BUF

Buffalo Niagara Intl.

$264 Roundtrip, found 1 day ago

$264

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jul 22 from O'Hare Intl. to Buffalo Niagara Intl., returning Wed, Jul 23, priced at $264 found 1 day ago