American Airlines Flight 3988 Deals & Information (2026/2027)

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American Airlines Flight 3988 Route Deals From $192

The cheapest prices found with in the last 7 days for return flights were $242 and $192 for one-way flights to Key West Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Feb 20 - Wed, Feb 25
MIA
Miami Intl.
EYW
Key West Intl.
$242 Roundtrip, found 2 days ago
$242
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Feb 20 from Miami Intl. to Key West Intl., returning Wed, Feb 25, priced at $242 found 2 days ago
Tue, Apr 14 - Sat, Apr 18
MIA
Miami Intl.
EYW
Key West Intl.
$262 Roundtrip, found 14 hours ago
$262
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Tue, Apr 14 from Miami Intl. to Key West Intl., returning Sat, Apr 18, priced at $262 found 14 hours ago
Tue, Apr 14 - Sat, Apr 18
MIA
Miami Intl.
EYW
Key West Intl.
$293 Roundtrip, found 14 hours ago
$293
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Tue, Apr 14 from Miami Intl. to Key West Intl., returning Sat, Apr 18, priced at $293 found 14 hours ago
Fri, Feb 20 - Wed, Feb 25
MIA
Miami Intl.
EYW
Key West Intl.
$294 Roundtrip, found 2 days ago
$294
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Feb 20 from Miami Intl. to Key West Intl., returning Wed, Feb 25, priced at $294 found 2 days ago
Fri, Feb 20 - Wed, Feb 25
MIA
Miami Intl.
EYW
Key West Intl.
$305 Roundtrip, found 2 days ago
$305
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Feb 20 from Miami Intl. to Key West Intl., returning Wed, Feb 25, priced at $305 found 2 days ago
Tue, Apr 14 - Sat, Apr 18
MIA
Miami Intl.
EYW
Key West Intl.
$305 Roundtrip, found 14 hours ago
$305
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Tue, Apr 14 from Miami Intl. to Key West Intl., returning Sat, Apr 18, priced at $305 found 14 hours ago
Wed, Mar 25 - Tue, Mar 31
MIA
Miami Intl.
EYW
Key West Intl.
$326 Roundtrip, found 6 days ago
$326
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Mar 25 from Miami Intl. to Key West Intl., returning Tue, Mar 31, priced at $326 found 6 days ago
Fri, Feb 20 - Wed, Feb 25
MIA
Miami Intl.
EYW
Key West Intl.
$330 Roundtrip, found 2 days ago
$330
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Feb 20 from Miami Intl. to Key West Intl., returning Wed, Feb 25, priced at $330 found 2 days ago
Tue, Apr 14 - Sat, Apr 18
MIA
Miami Intl.
EYW
Key West Intl.
$336 Roundtrip, found 14 hours ago
$336
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Tue, Apr 14 from Miami Intl. to Key West Intl., returning Sat, Apr 18, priced at $336 found 14 hours ago
Tue, Apr 14 - Sat, Apr 18
MIA
Miami Intl.
EYW
Key West Intl.
$342 Roundtrip, found 14 hours ago
$342
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Tue, Apr 14 from Miami Intl. to Key West Intl., returning Sat, Apr 18, priced at $342 found 14 hours ago

Frequently asked questions

What route does flight number AA3988 take?
AA3988 takes a number of routes. The most popular is between MSP and Chicago, IL Airport (ORD-O'Hare Intl.), which is a direct flight. This service usually takes 1 hour and 43 minutes. However, you might find other flights with the same number that are multi-stop.
What terminal does AA3988 fly out of?
Terminal 1 is where you'll most likely board from if you're booked on a flight out of Wold–Chamberlain Field. Minneapolis, MN Airport (MSP-Minneapolis - St. Paul Intl.) to O'Hare Airport is the most commonly traveled route for flight number AA3988.
What kind of plane is on flight number AA3988?
AA3988 is a flight number that serves a number of routes. If you're traveling on the most common route, MSP to O'Hare Intl. Airport (ORD), there's a strong chance you'll be hopping on board the 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 AA3988 flight with Travelocity, please visit our Customer Service Portal.