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

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American Airlines Flight 3988 Route Deals From $188

The cheapest prices found with in the last 7 days for return flights were $182 and $188 for one-way flights to Key West Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Feb 19 - Wed, Feb 25
MIA
Miami Intl.
EYW
Key West Intl.
$182 Roundtrip, found 4 days ago
$182
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Feb 19 from Miami Intl. to Key West Intl., returning Wed, Feb 25, priced at $182 found 4 days ago
Thu, Feb 19 - Thu, Feb 26
MIA
Miami Intl.
EYW
Key West Intl.
$229 Roundtrip, found 3 days ago
$229
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Feb 19 from Miami Intl. to Key West Intl., returning Thu, Feb 26, priced at $229 found 3 days ago
Fri, Feb 20 - Mon, Feb 23
MIA
Miami Intl.
EYW
Key West Intl.
$232 Roundtrip, found 3 days ago
$232
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Feb 20 from Miami Intl. to Key West Intl., returning Mon, Feb 23, priced at $232 found 3 days ago
Fri, Feb 20 - Mon, Feb 23
MIA
Miami Intl.
EYW
Key West Intl.
$235 Roundtrip, found 3 days ago
$235
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Feb 20 from Miami Intl. to Key West Intl., returning Mon, Feb 23, priced at $235 found 3 days ago
Fri, Feb 27 - Mon, Mar 2
MIA
Miami Intl.
EYW
Key West Intl.
$242 Roundtrip, found 1 day ago
$242
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Feb 27 from Miami Intl. to Key West Intl., returning Mon, Mar 2, priced at $242 found 1 day ago
Sat, Feb 21 - Sat, Feb 28
MIA
Miami Intl.
EYW
Key West Intl.
$246 Roundtrip, found 6 hours ago
$246
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Sat, Feb 21 from Miami Intl. to Key West Intl., returning Sat, Feb 28, priced at $246 found 6 hours ago
Fri, Feb 13 - Tue, Feb 17
MIA
Miami Intl.
EYW
Key West Intl.
$253 Roundtrip, found 7 hours ago
$253
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Fri, Feb 13 from Miami Intl. to Key West Intl., returning Tue, Feb 17, priced at $253 found 7 hours ago
Sat, Feb 7 - Wed, Feb 11
MIA
Miami Intl.
EYW
Key West Intl.
$269 Roundtrip, found 8 hours ago
$269
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sat, Feb 7 from Miami Intl. to Key West Intl., returning Wed, Feb 11, priced at $269 found 8 hours ago
Fri, Feb 6 - Sun, Feb 8
MIA
Miami Intl.
EYW
Key West Intl.
$277 Roundtrip, found 4 hours ago
$277
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Fri, Feb 6 from Miami Intl. to Key West Intl., returning Sun, Feb 8, priced at $277 found 4 hours ago
Thu, Feb 19 - Wed, Feb 25
MIA
Miami Intl.
EYW
Key West Intl.
$278 Roundtrip, found 4 days ago
$278
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Feb 19 from Miami Intl. to Key West Intl., returning Wed, Feb 25, priced at $278 found 4 days 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.