American Airlines Flight 4345 Deals & Information (2026/2027)

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American Airlines Flight 4345 Route Deals From $152

The cheapest prices found with in the last 7 days for return flights were $309 and $152 for one-way flights to Chattanooga Metropolitan for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Sep 20 - Wed, Sep 30
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$309 Roundtrip, found 1 day ago
$309
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Sep 20 from Miami Intl. to Chattanooga Metropolitan, returning Wed, Sep 30, priced at $309 found 1 day ago
Thu, Sep 17 - Sun, Sep 20
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$323 Roundtrip, found 6 hours ago
$323
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Sep 17 from Miami Intl. to Chattanooga Metropolitan, returning Sun, Sep 20, priced at $323 found 6 hours ago
Sun, Sep 20 - Wed, Sep 30
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$346 Roundtrip, found 1 day ago
$346
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Sep 20 from Miami Intl. to Chattanooga Metropolitan, returning Wed, Sep 30, priced at $346 found 1 day ago
Wed, Aug 19 - Thu, Aug 20
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$347 Roundtrip, found 20 hours ago
$347
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Wed, Aug 19 from Miami Intl. to Chattanooga Metropolitan, returning Thu, Aug 20, priced at $347 found 20 hours ago
Sun, Sep 20 - Wed, Sep 30
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$370 Roundtrip, found 1 day ago
$370
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Sep 20 from Miami Intl. to Chattanooga Metropolitan, returning Wed, Sep 30, priced at $370 found 1 day ago
Wed, Aug 19 - Thu, Aug 20
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$377 Roundtrip, found 20 hours ago
$377
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Wed, Aug 19 from Miami Intl. to Chattanooga Metropolitan, returning Thu, Aug 20, priced at $377 found 20 hours ago
Thu, Sep 17 - Sun, Sep 20
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$384 Roundtrip, found 6 hours ago
$384
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Sep 17 from Miami Intl. to Chattanooga Metropolitan, returning Sun, Sep 20, priced at $384 found 6 hours ago
Thu, Sep 17 - Sun, Sep 20
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$392 Roundtrip, found 6 hours ago
$392
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Sep 17 from Miami Intl. to Chattanooga Metropolitan, returning Sun, Sep 20, priced at $392 found 6 hours ago
Thu, Sep 17 - Sun, Sep 20
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$404 Roundtrip, found 6 hours ago
$404
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Sep 17 from Miami Intl. to Chattanooga Metropolitan, returning Sun, Sep 20, priced at $404 found 6 hours ago
Thu, Sep 17 - Sun, Sep 20
MIA
Miami Intl.
CHA
Chattanooga Metropolitan
$421 Roundtrip, found 6 hours ago
$421
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Sep 17 from Miami Intl. to Chattanooga Metropolitan, returning Sun, Sep 20, priced at $421 found 6 hours ago

Frequently asked questions

What route does flight number AA4345 take?
AA4345 takes numerous routes. The most frequently flown is between Louisville Intl. Airport (SDF) and O'Hare Airport, which flies direct. This service takes roughly 1 hour and 38 minutes. That said, there may be other flights with the same number that have one or more stops.
What kind of plane is on flight number AA4345?
If you're taking flight AA4345 from Louisville Muhammad Ali Intl. Airport to ORD, you'll likely be heading off on the Embraer RJ145. This flight number serves a number of different routes, but this is the most common one.
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 AA4345 flight with Travelocity, please visit our Customer Service Portal.