American Airlines Flight 4345 Deals & Information (2025/2026)

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American Airlines Flight 4345 Route Deals From $177

The cheapest prices found with in the last 7 days for return flights were $319 and $177 for one-way flights to Miami Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 9 - Tue, Sep 16
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$319 Roundtrip, found 6 days ago
$319
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Sep 9 from Chattanooga Metropolitan to Miami Intl., returning Tue, Sep 16, priced at $319 found 6 days ago
Tue, Sep 9 - Tue, Sep 16
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$335 Roundtrip, found 6 days ago
$335
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Sep 9 from Chattanooga Metropolitan to Miami Intl., returning Tue, Sep 16, priced at $335 found 6 days ago
Wed, Oct 22 - Mon, Oct 27
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$339 Roundtrip, found 1 day ago
$339
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Oct 22 from Chattanooga Metropolitan to Miami Intl., returning Mon, Oct 27, priced at $339 found 1 day ago
Tue, Sep 9 - Tue, Sep 16
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$340 Roundtrip, found 6 days ago
$340
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Sep 9 from Chattanooga Metropolitan to Miami Intl., returning Tue, Sep 16, priced at $340 found 6 days ago
Wed, Oct 22 - Mon, Oct 27
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$344 Roundtrip, found 1 day ago
$344
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Oct 22 from Chattanooga Metropolitan to Miami Intl., returning Mon, Oct 27, priced at $344 found 1 day ago
Wed, Oct 22 - Mon, Oct 27
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$355 Roundtrip, found 1 day ago
$355
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Oct 22 from Chattanooga Metropolitan to Miami Intl., returning Mon, Oct 27, priced at $355 found 1 day ago
Tue, Sep 9 - Tue, Sep 16
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$361 Roundtrip, found 6 days ago
$361
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Sep 9 from Chattanooga Metropolitan to Miami Intl., returning Tue, Sep 16, priced at $361 found 6 days ago
Fri, Sep 5 - Mon, Sep 8
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$376 Roundtrip, found 8 hours ago
$376
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Fri, Sep 5 from Chattanooga Metropolitan to Miami Intl., returning Mon, Sep 8, priced at $376 found 8 hours ago
Sat, Oct 4 - Fri, Oct 10
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$377 Roundtrip, found 4 days ago
$377
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 4 from Chattanooga Metropolitan to Miami Intl., returning Fri, Oct 10, priced at $377 found 4 days ago
Wed, Oct 22 - Mon, Oct 27
CHA
Chattanooga Metropolitan
MIA
Miami Intl.
$379 Roundtrip, found 1 day ago
$379
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Oct 22 from Chattanooga Metropolitan to Miami Intl., returning Mon, Oct 27, priced at $379 found 1 day 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.