American Airlines Flight AA3521 Deals & Information (2025/2026)

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American Airlines Flight 3521 Route Deals From $356

The cheapest prices found with in the last 7 days for return flights were $335 and $356 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$335 Roundtrip, found 9 hours ago
$335
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $335 found 9 hours ago
Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$395 Roundtrip, found 9 hours ago
$395
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $395 found 9 hours ago
Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$495 Roundtrip, found 9 hours ago
$495
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $495 found 9 hours ago
Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$517 Roundtrip, found 9 hours ago
$517
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $517 found 9 hours ago
Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$545 Roundtrip, found 9 hours ago
$545
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $545 found 9 hours ago
Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$665 Roundtrip, found 9 hours ago
$665
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $665 found 9 hours ago
Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$765 Roundtrip, found 9 hours ago
$765
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $765 found 9 hours ago
Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$787 Roundtrip, found 9 hours ago
$787
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $787 found 9 hours ago
Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$865 Roundtrip, found 9 hours ago
$865
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $865 found 9 hours ago
Tue, Jul 7 - Tue, Jul 14
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$916 Roundtrip, found 9 hours ago
$916
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 7 from Central Illinois Regional to O'Hare Intl., returning Tue, Jul 14, priced at $916 found 9 hours 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.