American Airlines Flight 4540 Deals & Information (2025/2026)

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American Airlines Flight 4540 Route Deals From $170

The cheapest prices found with in the last 7 days for return flights were $259 and $170 for one-way flights to Key West Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 22 - Mon, Oct 27
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$259 Roundtrip, found 18 hours ago
$259
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Wed, Oct 22 from Ronald Reagan Washington National to Key West Intl., returning Mon, Oct 27, priced at $259 found 18 hours ago
Thu, Nov 27 - Tue, Dec 2
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$289 Roundtrip, found 18 hours ago
$289
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Thu, Nov 27 from Ronald Reagan Washington National to Key West Intl., returning Tue, Dec 2, priced at $289 found 18 hours ago
Wed, Oct 22 - Mon, Oct 27
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$309 Roundtrip, found 18 hours ago
$309
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Wed, Oct 22 from Ronald Reagan Washington National to Key West Intl., returning Mon, Oct 27, priced at $309 found 18 hours ago
Thu, Nov 27 - Tue, Dec 2
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$314 Roundtrip, found 18 hours ago
$314
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Thu, Nov 27 from Ronald Reagan Washington National to Key West Intl., returning Tue, Dec 2, priced at $314 found 18 hours ago
Fri, Sep 5 - Mon, Sep 8
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$321 Roundtrip, found 1 day ago
$321
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Sep 5 from Ronald Reagan Washington National to Key West Intl., returning Mon, Sep 8, priced at $321 found 1 day ago
Thu, Jul 31 - Thu, Aug 7
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$322 Roundtrip, found 5 days ago
$322
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Jul 31 from Ronald Reagan Washington National to Key West Intl., returning Thu, Aug 7, priced at $322 found 5 days ago
Thu, Jul 31 - Tue, Aug 5
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$324 Roundtrip, found 6 days ago
$324
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Jul 31 from Ronald Reagan Washington National to Key West Intl., returning Tue, Aug 5, priced at $324 found 6 days ago
Fri, Aug 22 - Mon, Aug 25
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$324 Roundtrip, found 6 hours ago
$324
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Key West Intl., returning Mon, Aug 25, priced at $324 found 6 hours ago
Sat, Aug 30 - Tue, Sep 2
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$327 Roundtrip, found 3 days ago
$327
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Aug 30 from Ronald Reagan Washington National to Key West Intl., returning Tue, Sep 2, priced at $327 found 3 days ago
Mon, Oct 20 - Mon, Oct 27
DCA
Ronald Reagan Washington National
EYW
Key West Intl.
$339 Roundtrip, found 18 hours ago
$339
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Oct 20 from Ronald Reagan Washington National to Key West Intl., returning Mon, Oct 27, priced at $339 found 18 hours ago

Frequently asked questions

What route does flight number AA4540 take?
AA4540 flies straight from CLE to PHL in 1 hour and 33 minutes. It can sometimes take other routes though, some of which may be multi-stop journeys. Keep this in mind when locking in your airfare to avoid any confusion.
What kind of plane is on flight number AA4540?
AA4540 is a flight number that's used on many different routes. If you're traveling on the busiest route, Cleveland Hopkins Intl. Airport to Philadelphia Intl. Airport (PHL), you'll likely be boarding an 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 AA4540 flight with Travelocity, please visit our Customer Service Portal.