American Airlines Flight 4509 Deals & Information (2026/2027)

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American Airlines Flight 4509 Route Deals From $347

The cheapest prices found with in the last 7 days for return flights were $503 and $347 for one-way flights to Philadelphia Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 22 - Tue, Dec 29
EYW
Key West Intl.
PHL
Philadelphia Intl.
$503 Roundtrip, found 3 days ago
$503
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 22 from Key West Intl. to Philadelphia Intl., returning Tue, Dec 29, priced at $503 found 3 days ago
Tue, Dec 22 - Tue, Dec 29
EYW
Key West Intl.
PHL
Philadelphia Intl.
$513 Roundtrip, found 3 days ago
$513
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 22 from Key West Intl. to Philadelphia Intl., returning Tue, Dec 29, priced at $513 found 3 days ago
Tue, Dec 22 - Tue, Dec 29
EYW
Key West Intl.
PHL
Philadelphia Intl.
$524 Roundtrip, found 3 days ago
$524
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 22 from Key West Intl. to Philadelphia Intl., returning Tue, Dec 29, priced at $524 found 3 days ago
Tue, Dec 22 - Tue, Dec 29
EYW
Key West Intl.
PHL
Philadelphia Intl.
$534 Roundtrip, found 3 days ago
$534
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 22 from Key West Intl. to Philadelphia Intl., returning Tue, Dec 29, priced at $534 found 3 days ago
Thu, Nov 12 - Tue, Nov 17
EYW
Key West Intl.
PHL
Philadelphia Intl.
$543 Roundtrip, found 8 hours ago
$543
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Nov 12 from Key West Intl. to Philadelphia Intl., returning Tue, Nov 17, priced at $543 found 8 hours ago
Tue, Dec 22 - Tue, Dec 29
EYW
Key West Intl.
PHL
Philadelphia Intl.
$544 Roundtrip, found 3 days ago
$544
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 22 from Key West Intl. to Philadelphia Intl., returning Tue, Dec 29, priced at $544 found 3 days ago
Tue, Dec 22 - Tue, Dec 29
EYW
Key West Intl.
PHL
Philadelphia Intl.
$544 Roundtrip, found 3 days ago
$544
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 22 from Key West Intl. to Philadelphia Intl., returning Tue, Dec 29, priced at $544 found 3 days ago
Thu, Nov 12 - Tue, Nov 17
EYW
Key West Intl.
PHL
Philadelphia Intl.
$553 Roundtrip, found 8 hours ago
$553
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Nov 12 from Key West Intl. to Philadelphia Intl., returning Tue, Nov 17, priced at $553 found 8 hours ago
Tue, Dec 22 - Tue, Dec 29
EYW
Key West Intl.
PHL
Philadelphia Intl.
$554 Roundtrip, found 3 days ago
$554
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 22 from Key West Intl. to Philadelphia Intl., returning Tue, Dec 29, priced at $554 found 3 days ago
Thu, Nov 12 - Tue, Nov 17
EYW
Key West Intl.
PHL
Philadelphia Intl.
$557 Roundtrip, found 8 hours ago
$557
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Nov 12 from Key West Intl. to Philadelphia Intl., returning Tue, Nov 17, priced at $557 found 8 hours ago

Frequently asked questions

What route does flight number AA4509 take?
AA4509 serves multiple routes, but the most common is between ROC and Charlotte Airport. If on a direct flight, you'll arrive in approximately 2 hours and 6 minutes. Multi-stop flights can also operate under this number, as can services on other routes.
What kind of plane is on flight number AA4509?
AA4509 is a flight number that is used on lots of different routes. If you've booked a ticket on the busiest route, Rochester, NY Airport (ROC-Greater Rochester Intl.) to CLT, you'll probably be climbing on board the Embraer 175.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AA4509 flight with Travelocity, please visit our Customer Service Portal.