
American Airlines Flight UA4377 Deals & Information (2025/2026)
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American Airlines Flight 4377 Route Deals From $46
The cheapest prices found with in the last 7 days for return flights were $91 and $46 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$91 Roundtrip, found 2 hours ago
$91
Roundtrip
found 2 hours ago
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$121 Roundtrip, found 2 hours ago
$121
Roundtrip
found 2 hours ago
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$129 Roundtrip, found 1 day ago
$129
Roundtrip
found 1 day ago
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$143 Roundtrip, found 2 hours ago
$143
Roundtrip
found 2 hours ago
PIT
Pittsburgh Intl.
ORD
O'Hare Intl.
$145 Roundtrip, found 2 hours ago
$145
Roundtrip
found 2 hours ago