
American Airlines Flight 403 Deals & Information (2025/2026)
Wander Wisely with exceptional service, 24/7 supportOpens in a new window
Feel at ease with free flight cancellations within 24 hours of booking
Change your flight without a fee on select flights
American Airlines Flight 403 Route Deals From $46
The cheapest prices found with in the last 7 days for return flights were $98 and $46 for one-way flights to Buffalo Niagara Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$98 Roundtrip, found 1 day ago
$98
Roundtrip
found 1 day ago
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$118 Roundtrip, found 6 hours ago
$118
Roundtrip
found 6 hours ago
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$139 Roundtrip, found 1 day ago
$139
Roundtrip
found 1 day ago
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$145 Roundtrip, found 10 hours ago
$145
Roundtrip
found 10 hours ago
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$158 Roundtrip, found 1 day ago
$158
Roundtrip
found 1 day ago