American Airlines Flight 4457 Deals & Information (2026/2027)

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American Airlines Flight 4457 Route Deals From $153

The cheapest prices found with in the last 7 days for return flights were $267 and $153 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 21 - Sat, Oct 24
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$267 Roundtrip, found 2 days ago
$267
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Oct 21 from Pittsburgh Intl. to O'Hare Intl., returning Sat, Oct 24, priced at $267 found 2 days ago
Tue, Oct 27 - Wed, Oct 28
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$276 Roundtrip, found 2 days ago
$276
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Oct 27 from Pittsburgh Intl. to O'Hare Intl., returning Wed, Oct 28, priced at $276 found 2 days ago
Wed, Oct 21 - Sat, Oct 24
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$277 Roundtrip, found 2 days ago
$277
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Oct 21 from Pittsburgh Intl. to O'Hare Intl., returning Sat, Oct 24, priced at $277 found 2 days ago
Mon, Oct 5 - Wed, Oct 7
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$296 Roundtrip, found 20 hours ago
$296
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Mon, Oct 5 from Pittsburgh Intl. to O'Hare Intl., returning Wed, Oct 7, priced at $296 found 20 hours ago
Mon, Oct 5 - Wed, Oct 7
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$303 Roundtrip, found 20 hours ago
$303
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Mon, Oct 5 from Pittsburgh Intl. to O'Hare Intl., returning Wed, Oct 7, priced at $303 found 20 hours ago
Mon, Oct 5 - Wed, Oct 7
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$306 Roundtrip, found 20 hours ago
$306
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Mon, Oct 5 from Pittsburgh Intl. to O'Hare Intl., returning Wed, Oct 7, priced at $306 found 20 hours ago
Mon, Oct 5 - Wed, Oct 7
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$308 Roundtrip, found 20 hours ago
$308
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Mon, Oct 5 from Pittsburgh Intl. to O'Hare Intl., returning Wed, Oct 7, priced at $308 found 20 hours ago