American Airlines Flight 3521 Deals & Information (2026/2027)

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American Airlines Flight 3521 Route Deals From $274

The cheapest prices found with in the last 7 days for return flights were $503 and $274 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, May 6 - Wed, May 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$503 Roundtrip, found 3 days ago
$503
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, May 6 from Central Illinois Regional to O'Hare Intl., returning Wed, May 19, priced at $503 found 3 days ago
Thu, May 6 - Wed, May 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$548 Roundtrip, found 3 days ago
$548
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, May 6 from Central Illinois Regional to O'Hare Intl., returning Wed, May 19, priced at $548 found 3 days ago
Thu, May 6 - Wed, May 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$576 Roundtrip, found 3 days ago
$576
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, May 6 from Central Illinois Regional to O'Hare Intl., returning Wed, May 19, priced at $576 found 3 days ago
Thu, May 6 - Wed, May 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$591 Roundtrip, found 3 days ago
$591
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, May 6 from Central Illinois Regional to O'Hare Intl., returning Wed, May 19, priced at $591 found 3 days ago
Thu, May 6 - Wed, May 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$649 Roundtrip, found 3 days ago
$649
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, May 6 from Central Illinois Regional to O'Hare Intl., returning Wed, May 19, priced at $649 found 3 days ago
Thu, May 6 - Wed, May 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$727 Roundtrip, found 3 days ago
$727
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, May 6 from Central Illinois Regional to O'Hare Intl., returning Wed, May 19, priced at $727 found 3 days ago
Thu, May 6 - Wed, May 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$743 Roundtrip, found 3 days ago
$743
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, May 6 from Central Illinois Regional to O'Hare Intl., returning Wed, May 19, priced at $743 found 3 days ago
Mon, Nov 16 - Thu, Nov 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$878 Roundtrip, found 1 day ago
$878
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Nov 16 from Central Illinois Regional to O'Hare Intl., returning Thu, Nov 19, priced at $878 found 1 day ago
Mon, Nov 16 - Thu, Nov 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$909 Roundtrip, found 1 day ago
$909
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Nov 16 from Central Illinois Regional to O'Hare Intl., returning Thu, Nov 19, priced at $909 found 1 day ago
Mon, Nov 16 - Thu, Nov 19
BMI
Central Illinois Regional
ORD
O'Hare Intl.
$921 Roundtrip, found 1 day ago
$921
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Nov 16 from Central Illinois Regional to O'Hare Intl., returning Thu, Nov 19, priced at $921 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.