American Airlines Flight 3521 Deals & Information (2025/2026)

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American Airlines Flight 3521 Route Deals From $416

The cheapest prices found with in the last 7 days for return flights were $363 and $416 for one-way flights to Brownsville-South Padre Island Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Feb 21 - Sat, Feb 28
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$363 Roundtrip, found 7 hours ago
$363
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Sat, Feb 21 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Sat, Feb 28, priced at $363 found 7 hours ago
Wed, Feb 4 - Sun, Feb 8
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$383 Roundtrip, found 20 hours ago
$383
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Wed, Feb 4 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Sun, Feb 8, priced at $383 found 20 hours ago
Sat, Feb 21 - Sat, Feb 28
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$423 Roundtrip, found 7 hours ago
$423
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Sat, Feb 21 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Sat, Feb 28, priced at $423 found 7 hours ago
Sat, Feb 7 - Tue, Feb 10
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$434 Roundtrip, found 20 hours ago
$434
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Sat, Feb 7 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Tue, Feb 10, priced at $434 found 20 hours ago
Sun, Feb 1 - Sat, Feb 7
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$443 Roundtrip, found 20 hours ago
$443
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Sun, Feb 1 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Sat, Feb 7, priced at $443 found 20 hours ago
Wed, Dec 24 - Mon, Dec 29
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$449 Roundtrip, found 1 day ago
$449
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Dec 24 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Mon, Dec 29, priced at $449 found 1 day ago
Tue, Dec 23 - Wed, Dec 31
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$452 Roundtrip, found 1 day ago
$452
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Dec 23 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Wed, Dec 31, priced at $452 found 1 day ago
Tue, Dec 23 - Tue, Dec 30
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$458 Roundtrip, found 1 day ago
$458
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Dec 23 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Tue, Dec 30, priced at $458 found 1 day ago
Sun, Feb 1 - Sun, Feb 8
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$463 Roundtrip, found 20 hours ago
$463
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Sun, Feb 1 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Sun, Feb 8, priced at $463 found 20 hours ago
Tue, Dec 23 - Thu, Jan 1
DFW
Dallas-Fort Worth Intl.
BRO
Brownsville-South Padre Island Intl.
$472 Roundtrip, found 1 day ago
$472
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Dec 23 from Dallas-Fort Worth Intl. to Brownsville-South Padre Island Intl., returning Thu, Jan 1, priced at $472 found 1 day ago

Frequently asked questions

What route does flight number AA3521 take?
AA3521 is used on multiple routes, but the most common is between General Mariano Escobedo Intl. Airport (MTY) and Dallas-Fort Worth Intl. Airport (DFW). If you manage to score a direct flight, you'll arrive in about 1 hour and 44 minutes. Multi-stop flights can also use the same number, as can services on other routes.
How often is AA3521 on time?
American Airlines flight number AA3521 has multiple routes, but the most quickly booked is from Monterrey, Nuevo Leon Airport (MTY-General Mariano Escobedo Intl.) to Dallas, TX Airport (DFW-Dallas-Fort Worth Intl.) and lands according to schedule 76% of the time. If there is a delay, you can expect to wait for 24 minutes. This service has a 1.85-star rating.
What terminal does AA3521 fly out of?
If you're heading off from Monterrey, Nuevo Leon Airport (MTY-General Mariano Escobedo Intl.), there's a fair chance you'll board the plane from Terminal A. The most frequented route for AA3521 is Monterrey Intl. Airport to DFW, which is a nonstop flight.
What kind of plane is on flight number AA3521?
It's highly likely you'll travel aboard an Embraer 175 if you've booked a seat on flight AA3521 from Monterrey Intl. Airport to Dallas, TX Airport (DFW-Dallas-Fort Worth Intl.). It's the most commonly used type of plane on this popular route.
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 AA3521 flight with Travelocity, please visit our Customer Service Portal.