American Airlines Flight 91 Deals & Information (2026/2027)

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American Airlines Flight 91 Route Deals From $566

The cheapest prices found with in the last 7 days for return flights were $856 and $566 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 1 - Wed, Sep 9
LHR
Heathrow
ORD
O'Hare Intl.
$856 Roundtrip, found 3 hours ago
$856
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, Sep 1 from Heathrow to O'Hare Intl., returning Wed, Sep 9, priced at $856 found 3 hours ago