American Airlines Flight 451 Deals & Information (2025/2026)

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American Airlines Flight 451 Route Deals From $328

The cheapest prices found with in the last 7 days for return flights were $500 and $328 for one-way flights to Juan Santamaría Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Dec 11 - Fri, Dec 12
CLT
Charlotte-Douglas Intl.
SJO
Juan Santamaría Intl.
$500 Roundtrip, found 5 days ago
$500
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Dec 11 from Charlotte-Douglas Intl. to Juan Santamaría Intl., returning Fri, Dec 12, priced at $500 found 5 days ago
Mon, Jan 26 - Sat, Jan 31
CLT
Charlotte-Douglas Intl.
SJO
Juan Santamaría Intl.
$503 Roundtrip, found 12 hours ago
$503
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Mon, Jan 26 from Charlotte-Douglas Intl. to Juan Santamaría Intl., returning Sat, Jan 31, priced at $503 found 12 hours ago

Frequently asked questions

What route does flight number AA451 take?
AA451 is used on multiple routes. Typically, AA451 flies directly from Dallas-Fort Worth Intl. Airport (DFW) to PHL. If this is your route, you'll be traveling for around 3 hours and 29 minutes.
What kind of plane is on flight number AA451?
There's a good chance you'll be on board the Airbus A321neo if you're traveling from DFW to Philadelphia Airport, a popular route for flight number AA451.
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 AA451 flight with Travelocity, please visit our Customer Service Portal.